GrDrawState.h revision b75b0a0b8492e14c7728e0a0881f87dc64ce60f9
19381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com/* 29381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * Copyright 2011 Google Inc. 39381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * 49381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * Use of this source code is governed by a BSD-style license that can be 59381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * found in the LICENSE file. 69381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com */ 79381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 89381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#ifndef GrDrawState_DEFINED 99381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#define GrDrawState_DEFINED 109381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 112eaaefd7e6a58339b3f93333f1e9cc92252cc303bsalomon@google.com#include "GrBackendEffectFactory.h" 129381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "GrColor.h" 1308283afc265f1153834256fc1012519813ba6b73bsalomon@google.com#include "GrEffectStage.h" 14cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com#include "GrRefCnt.h" 15cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com#include "GrRenderTarget.h" 169381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "GrStencil.h" 17cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com#include "GrTemplates.h" 1864aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com#include "GrTexture.h" 1968b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com#include "effects/GrSimpleTextureEffect.h" 209381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 21cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com#include "SkMatrix.h" 229381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "SkXfermode.h" 239381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 24af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.comclass GrPaint; 259381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 262e3d144dfdbc4596d33baef7396316f88f412cc8bsalomon@google.comclass GrDrawState : public GrRefCnt { 272e3d144dfdbc4596d33baef7396316f88f412cc8bsalomon@google.compublic: 28fa35e3ddcc9d130ce87c927218bdf27879c38711reed@google.com SK_DECLARE_INST_COUNT(GrDrawState) 29d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 309381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com /** 311322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * Total number of effect stages. Each stage can host a GrEffect. A stage is enabled if it has a 321322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * GrEffect. The effect produces an output color in the fragment shader. It's inputs are the 331322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * output from the previous enabled stage and a position. The position is either derived from 341322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * the interpolated vertex positions or explicit per-vertex coords, depending upon the 351322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * GrVertexLayout used to draw. 36bf5cad4e9c5808493b35cb9b0000a2d36b7f9b78robertphillips@google.com * 371322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * The stages are divided into two sets, color-computing and coverage-computing. The final color 381322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * stage produces the final pixel color. The coverage-computing stages function exactly as the 391322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * color-computing but the output of the final coverage stage is treated as a fractional pixel 401322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * coverage rather than as input to the src/dst color blend step. 411322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * 421322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * The input color to the first enabled color-stage is either the constant color or interpolated 431322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * per-vertex colors, depending upon GrVertexLayout. The input to the first coverage stage is 441322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * either a constant coverage (usually full-coverage), interpolated per-vertex coverage, or 451322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * edge-AA computed coverage. (This latter is going away as soon as it can be rewritten as a 461322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * GrEffect). 471322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * 48cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * See the documentation of kCoverageDrawing_StateBit for information about disabling the 49cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * the color / coverage distinction. 50cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * 511322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * Stages 0 through GrPaint::kTotalStages-1 are reserved for stages copied from the client's 521322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * GrPaint. Stages GrPaint::kTotalStages through kNumStages-2 are earmarked for use by 531322134a3a7232e4ae3433733ed425fd9966bd5cbsalomon@google.com * GrTextContext and GrPathRenderer-derived classes. kNumStages-1 is earmarked for clipping 54dfdb7e5240276493077b7c6e1f3cc8b8a0e195babsalomon@google.com * by GrClipMaskManager. 559381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com */ 569381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com enum { 57580711694654b8edc70028d09c4211445b661466twiz@google.com kNumStages = 5, 589381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com kMaxTexCoords = kNumStages 599381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com }; 609381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 61ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrDrawState() { 6275847199c25121c9989e8dba103ac6002d2132d6reed@google.com#if GR_DEBUG 6375847199c25121c9989e8dba103ac6002d2132d6reed@google.com VertexLayoutUnitTest(); 6475847199c25121c9989e8dba103ac6002d2132d6reed@google.com#endif 6552a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com this->reset(); 6652a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com } 6746f7afb9867200b568c21736da8a8bbb56b20e30bsalomon@google.com 68ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrDrawState(const GrDrawState& state) { 6946f7afb9867200b568c21736da8a8bbb56b20e30bsalomon@google.com *this = state; 7046f7afb9867200b568c21736da8a8bbb56b20e30bsalomon@google.com } 7146f7afb9867200b568c21736da8a8bbb56b20e30bsalomon@google.com 729ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com virtual ~GrDrawState() { 737d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com this->disableStages(); 749ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com } 759ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com 7652a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com /** 777d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com * Resets to the default state. 7808283afc265f1153834256fc1012519813ba6b73bsalomon@google.com * GrEffects will be removed from all stages. 79d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com */ 8052a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com void reset() { 819ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com 827d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com this->disableStages(); 8352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com 84ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fRenderTarget.reset(NULL); 85ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 86ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fColor = 0xffffffff; 87b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com fCommon.fVertexLayout = kDefault_VertexLayout; 88ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fViewMatrix.reset(); 89ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fSrcBlend = kOne_GrBlendCoeff; 90ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fDstBlend = kZero_GrBlendCoeff; 91ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fBlendConstant = 0x0; 92ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fFlagBits = 0x0; 93ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fVertexEdgeType = kHairLine_EdgeType; 94ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fStencilSettings.setDisabled(); 95ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fFirstCoverageStage = kNumStages; 96ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fCoverage = 0xffffffff; 97ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fColorFilterMode = SkXfermode::kDst_Mode; 98ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fColorFilterColor = 0x0; 99ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fDrawFace = kBoth_DrawFace; 100af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.com } 101af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.com 102af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.com /** 103af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.com * Initializes the GrDrawState based on a GrPaint. Note that GrDrawState 1041e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com * encompasses more than GrPaint. Aspects of GrDrawState that have no 105af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.com * GrPaint equivalents are not modified. GrPaint has fewer stages than 106af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.com * GrDrawState. The extra GrDrawState stages are disabled. 107af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.com */ 108af84e748cedbf43e2d0e8d2eac9b7800c8d8ca19bsalomon@google.com void setFromPaint(const GrPaint& paint); 1098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 111b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com /// @name Vertex Layout 112cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com //// 113cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 114cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 115cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * The format of vertices is represented as a bitfield of flags. 116cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Flags that indicate the layout of vertex data. Vertices always contain 117cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * positions and may also contain up to GrDrawState::kMaxTexCoords sets 118cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * of 2D texture coordinates, per-vertex colors, and per-vertex coverage. 119cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Each stage can 120cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * use any of the texture coordinates as its input texture coordinates or it 121cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * may use the positions as texture coordinates. 122cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 123cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * If no texture coordinates are specified for a stage then the stage is 124cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * disabled. 125cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 126cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Only one type of texture coord can be specified per stage. For 127cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * example StageTexCoordVertexLayoutBit(0, 2) and 128cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * StagePosAsTexCoordVertexLayoutBit(0) cannot both be specified. 129cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 130cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * The order in memory is always (position, texture coord 0, ..., color, 131cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * coverage) with any unused fields omitted. Note that this means that if 132cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * only texture coordinates 1 is referenced then there is no texture 133cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * coordinates 0 and the order would be (position, texture coordinate 1 134cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * [, color][, coverage]). 135cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 136cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 137cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 138cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Generates a bit indicating that a texture stage uses texture coordinates 139cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 140cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param stageIdx the stage that will use texture coordinates. 141cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param texCoordIdx the index of the texture coordinates to use 142cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 143cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return the bit to add to a GrVertexLayout bitfield. 144cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 145cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static int StageTexCoordVertexLayoutBit(int stageIdx, int texCoordIdx) { 146cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com GrAssert(stageIdx < kNumStages); 147cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com GrAssert(texCoordIdx < kMaxTexCoords); 148cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com return 1 << (stageIdx + (texCoordIdx * kNumStages)); 149cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com } 150cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 151cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static bool StageUsesTexCoords(GrVertexLayout layout, int stageIdx); 152cdcb2ce2744c7e5c47453328dbf292edee79ab37skia.committer@gmail.com 153cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.comprivate: 154cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com // non-stage bits start at this index. 155cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static const int STAGE_BIT_CNT = kNumStages * kMaxTexCoords; 156cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.compublic: 157cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 158cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 159cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Additional Bits that can be specified in GrVertexLayout. 160cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 161cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com enum VertexLayoutBits { 162cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /* vertices have colors (GrColor) */ 163cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com kColor_VertexLayoutBit = 1 << (STAGE_BIT_CNT + 0), 164cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /* vertices have coverage (GrColor) 165cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 166cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com kCoverage_VertexLayoutBit = 1 << (STAGE_BIT_CNT + 1), 167cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /* Use text vertices. (Pos and tex coords may be a different type for 168cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * text [GrGpuTextVertex vs GrPoint].) 169cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 170cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com kTextFormat_VertexLayoutBit = 1 << (STAGE_BIT_CNT + 2), 171cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 172cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /* Each vertex specificies an edge. Distance to the edge is used to 173cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * compute a coverage. See GrDrawState::setVertexEdgeType(). 174cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 175cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com kEdge_VertexLayoutBit = 1 << (STAGE_BIT_CNT + 3), 176cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com // for below assert 177cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com kDummyVertexLayoutBit, 178cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com kHighVertexLayoutBit = kDummyVertexLayoutBit - 1 179cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com }; 180cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com // make sure we haven't exceeded the number of bits in GrVertexLayout. 181cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com GR_STATIC_ASSERT(kHighVertexLayoutBit < ((uint64_t)1 << 8*sizeof(GrVertexLayout))); 182cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 183b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com enum VertexLayout { 184b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com kDefault_VertexLayout = 0 185b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com }; 186b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com 187b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com /** 188b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * Sets vertex layout for next draw. 189b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * 190b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * @param layout the vertex layout to set. 191b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com */ 192b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com void setVertexLayout(GrVertexLayout layout) { fCommon.fVertexLayout = layout; } 193b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com 194b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com GrVertexLayout getVertexLayout() const { return fCommon.fVertexLayout; } 195b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com size_t getVertexSize() const { return VertexSize(fCommon.fVertexLayout); } 196b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com 197b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com 198cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com //////////////////////////////////////////////////////////////////////////// 199cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com // Helpers for picking apart vertex layouts 200cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 201cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 202cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function to compute the size of a vertex from a vertex layout 203cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return size of a single vertex. 204cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 205cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static size_t VertexSize(GrVertexLayout vertexLayout); 206cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 207cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 208cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function for determining the index of texture coordinates that 209cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * is input for a texture stage. Note that a stage may instead use positions 210cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * as texture coordinates, in which case the result of the function is 211cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * indistinguishable from the case when the stage is disabled. 212cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 213cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param stageIdx the stage to query 214cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertexLayout layout to query 215cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 216cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return the texture coordinate index or -1 if the stage doesn't use 217cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * separate (non-position) texture coordinates. 218cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 219cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static int VertexTexCoordsForStage(int stageIdx, GrVertexLayout vertexLayout); 220cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 221cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 222cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function to compute the offset of texture coordinates in a vertex 223cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return offset of texture coordinates in vertex layout or -1 if the 224cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * layout has no texture coordinates. Will be 0 if positions are 225cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * used as texture coordinates for the stage. 226cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 227cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static int VertexStageCoordOffset(int stageIdx, GrVertexLayout vertexLayout); 228cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 229cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 230cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function to compute the offset of the color in a vertex 231cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return offset of color in vertex layout or -1 if the 232cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * layout has no color. 233cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 234cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static int VertexColorOffset(GrVertexLayout vertexLayout); 235cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 236cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 237cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function to compute the offset of the coverage in a vertex 238cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return offset of coverage in vertex layout or -1 if the 239cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * layout has no coverage. 240cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 241cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static int VertexCoverageOffset(GrVertexLayout vertexLayout); 242cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 243cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 244cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function to compute the offset of the edge pts in a vertex 245cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return offset of edge in vertex layout or -1 if the 246cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * layout has no edge. 247cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 248cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static int VertexEdgeOffset(GrVertexLayout vertexLayout); 249cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 250cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 251cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function to determine if vertex layout contains explicit texture 252cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * coordinates of some index. 253cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 254cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param coordIndex the tex coord index to query 255cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertexLayout layout to query 256cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 257cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return true if vertex specifies texture coordinates for the index, 258cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * false otherwise. 259cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 260cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static bool VertexUsesTexCoordIdx(int coordIndex, 261cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com GrVertexLayout vertexLayout); 262cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 263cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 264cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function to compute the size of each vertex and the offsets of 265cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * texture coordinates and color. Determines tex coord offsets by tex coord 266cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * index rather than by stage. (Each stage can be mapped to any t.c. index 267cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * by StageTexCoordVertexLayoutBit.) 268cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 269cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertexLayout the layout to query 270cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param texCoordOffsetsByIdx after return it is the offset of each 271cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * tex coord index in the vertex or -1 if 272cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * index isn't used. (optional) 273cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param colorOffset after return it is the offset of the 274cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * color field in each vertex, or -1 if 275cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * there aren't per-vertex colors. (optional) 276cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param coverageOffset after return it is the offset of the 277cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * coverage field in each vertex, or -1 if 278cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * there aren't per-vertex coeverages. 279cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * (optional) 280cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param edgeOffset after return it is the offset of the 281cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * edge eq field in each vertex, or -1 if 282cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * there aren't per-vertex edge equations. 283cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * (optional) 284cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return size of a single vertex 285cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 286cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static int VertexSizeAndOffsetsByIdx(GrVertexLayout vertexLayout, 287cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int texCoordOffsetsByIdx[kMaxTexCoords], 288cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int *colorOffset, 289cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int *coverageOffset, 290cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int* edgeOffset); 291cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 292cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 293cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Helper function to compute the size of each vertex and the offsets of 294cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * texture coordinates and color. Determines tex coord offsets by stage 295cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * rather than by index. (Each stage can be mapped to any t.c. index 296cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * by StageTexCoordVertexLayoutBit.) If a stage uses positions for 297cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * tex coords then that stage's offset will be 0 (positions are always at 0). 298cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * 299cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertexLayout the layout to query 300cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param texCoordOffsetsByStage after return it is the offset of each 301cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * tex coord index in the vertex or -1 if 302cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * index isn't used. (optional) 303cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param colorOffset after return it is the offset of the 304cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * color field in each vertex, or -1 if 305cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * there aren't per-vertex colors. 306cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * (optional) 307cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param coverageOffset after return it is the offset of the 308cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * coverage field in each vertex, or -1 if 309cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * there aren't per-vertex coeverages. 310cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * (optional) 311cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param edgeOffset after return it is the offset of the 312cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * edge eq field in each vertex, or -1 if 313cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * there aren't per-vertex edge equations. 314cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * (optional) 315cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return size of a single vertex 316cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 317cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static int VertexSizeAndOffsetsByStage(GrVertexLayout vertexLayout, 318cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int texCoordOffsetsByStage[kNumStages], 319cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int* colorOffset, 320cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int* coverageOffset, 321cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int* edgeOffset); 322cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 323d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com /** 324d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * Determines whether src alpha is guaranteed to be one for all src pixels 325d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com */ 326d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com bool srcAlphaWillBeOne(GrVertexLayout) const; 327d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 328d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com /** 329d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * Determines whether the output coverage is guaranteed to be one for all pixels hit by a draw. 330d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com */ 331d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com bool hasSolidCoverage(GrVertexLayout) const; 332cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 333cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 334cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Accessing positions, texture coords, or colors, of a vertex within an 335cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * array is a hassle involving casts and simple math. These helpers exist 336cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * to keep GrDrawTarget clients' code a bit nicer looking. 337cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 338cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 339cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 340cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Gets a pointer to a GrPoint of a vertex's position or texture 341cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * coordinate. 342cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertices the vetex array 343cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertexIndex the index of the vertex in the array 344cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertexSize the size of each vertex in the array 345cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param offset the offset in bytes of the vertex component. 346cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Defaults to zero (corresponding to vertex position) 347cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return pointer to the vertex component as a GrPoint 348cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 349cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static GrPoint* GetVertexPoint(void* vertices, 350cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int vertexIndex, 351cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int vertexSize, 352cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int offset = 0) { 353cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com intptr_t start = GrTCast<intptr_t>(vertices); 354cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com return GrTCast<GrPoint*>(start + offset + 355cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com vertexIndex * vertexSize); 356cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com } 357cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static const GrPoint* GetVertexPoint(const void* vertices, 358cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int vertexIndex, 359cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int vertexSize, 360cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int offset = 0) { 361cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com intptr_t start = GrTCast<intptr_t>(vertices); 362cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com return GrTCast<const GrPoint*>(start + offset + 363cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com vertexIndex * vertexSize); 364cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com } 365cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 366cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /** 367cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * Gets a pointer to a GrColor inside a vertex within a vertex array. 368cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertices the vetex array 369cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertexIndex the index of the vertex in the array 370cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param vertexSize the size of each vertex in the array 371cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @param offset the offset in bytes of the vertex color 372cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com * @return pointer to the vertex component as a GrColor 373cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com */ 374cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static GrColor* GetVertexColor(void* vertices, 375cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int vertexIndex, 376cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int vertexSize, 377cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int offset) { 378cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com intptr_t start = GrTCast<intptr_t>(vertices); 379cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com return GrTCast<GrColor*>(start + offset + 380cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com vertexIndex * vertexSize); 381cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com } 382cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static const GrColor* GetVertexColor(const void* vertices, 383cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int vertexIndex, 384cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int vertexSize, 385cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com int offset) { 386cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com const intptr_t start = GrTCast<intptr_t>(vertices); 387cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com return GrTCast<const GrColor*>(start + offset + 388cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com vertexIndex * vertexSize); 389cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com } 390cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 391cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com static void VertexLayoutUnitTest(); 392cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 393cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /// @} 394cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com 395cc78238f0b6aa1a7b3fc767758d9eeef4c1bffa9jvanverth@google.com /////////////////////////////////////////////////////////////////////////// 3968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Color 3978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 3988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 3998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 4008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets color for next draw to a premultiplied-alpha color. 4018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 4028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param color the color to set. 4038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 404ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com void setColor(GrColor color) { fCommon.fColor = color; } 4058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 406ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrColor getColor() const { return fCommon.fColor; } 4078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 4098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the color to be used for the next draw to be 4108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * (r,g,b,a) = (alpha, alpha, alpha, alpha). 4118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 4128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param alpha The alpha value to set as the color. 4138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 4148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setAlpha(uint8_t a) { 4158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com this->setColor((a << 24) | (a << 16) | (a << 8) | a); 4168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 4198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Add a color filter that can be represented by a color and a mode. Applied 4208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * after color-computing texture stages. 4218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 4228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setColorFilter(GrColor c, SkXfermode::Mode mode) { 423ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fColorFilterColor = c; 424ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fColorFilterMode = mode; 4258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 427ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrColor getColorFilterColor() const { return fCommon.fColorFilterColor; } 428ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com SkXfermode::Mode getColorFilterMode() const { return fCommon.fColorFilterMode; } 4298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4305b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com /** 4315b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com * Constructor sets the color to be 'color' which is undone by the destructor. 4325b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com */ 4335b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com class AutoColorRestore : public ::GrNoncopyable { 4345b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com public: 435d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com AutoColorRestore() : fDrawState(NULL) {} 436d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 4375b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com AutoColorRestore(GrDrawState* drawState, GrColor color) { 438d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com fDrawState = NULL; 439d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com this->set(drawState, color); 440d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com } 441d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 442d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com void reset() { 443d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com if (NULL != fDrawState) { 444d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com fDrawState->setColor(fOldColor); 445d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com fDrawState = NULL; 446d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com } 447d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com } 448d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 449d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com void set(GrDrawState* drawState, GrColor color) { 450d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com this->reset(); 4515b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com fDrawState = drawState; 4525b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com fOldColor = fDrawState->getColor(); 4535b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com fDrawState->setColor(color); 4545b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com } 455d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 456d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com ~AutoColorRestore() { this->reset(); } 4575b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com private: 4585b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com GrDrawState* fDrawState; 4595b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com GrColor fOldColor; 4605b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com }; 4615b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com 4628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 4638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 4652401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com /// @name Coverage 4662401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com //// 4672401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com 4682401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com /** 469d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * Sets a constant fractional coverage to be applied to the draw. The 4702401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com * initial value (after construction or reset()) is 0xff. The constant 4712401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com * coverage is ignored when per-vertex coverage is provided. 4722401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com */ 4732401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com void setCoverage(uint8_t coverage) { 474ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fCoverage = GrColorPackRGBA(coverage, coverage, coverage, coverage); 4752401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com } 4762401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com 4772401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com /** 4782401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com * Version of above that specifies 4 channel per-vertex color. The value 4792401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com * should be premultiplied. 4802401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com */ 4812401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com void setCoverage4(GrColor coverage) { 482ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fCoverage = coverage; 4832401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com } 4842401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com 4852401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com GrColor getCoverage() const { 486ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return fCommon.fCoverage; 4872401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com } 4882401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com 4892401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com /// @} 4902401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com 4912401ae8fd3c1f6282f571b5a7e0a499e9f4c09abbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 492adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com /// @name Effect Stages 4938f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 4948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 495adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com const GrEffectRef* setEffect(int stageIdx, const GrEffectRef* effect) { 496adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com fStages[stageIdx].setEffect(effect); 497adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com return effect; 498adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com } 499adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com 5008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 50168b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com * Creates a GrSimpleTextureEffect. 5021e8f016305805d4d8cad74aba3a21b78486f9d6ftomhudson@google.com */ 503b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com void createTextureEffect(int stageIdx, GrTexture* texture, const SkMatrix& matrix) { 50408283afc265f1153834256fc1012519813ba6b73bsalomon@google.com GrAssert(!this->getStage(stageIdx).getEffect()); 50568b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com GrEffectRef* effect = GrSimpleTextureEffect::Create(texture, matrix); 506adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com this->setEffect(stageIdx, effect)->unref(); 507dfdb7e5240276493077b7c6e1f3cc8b8a0e195babsalomon@google.com } 50808283afc265f1153834256fc1012519813ba6b73bsalomon@google.com void createTextureEffect(int stageIdx, 50908283afc265f1153834256fc1012519813ba6b73bsalomon@google.com GrTexture* texture, 510b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com const SkMatrix& matrix, 511dfdb7e5240276493077b7c6e1f3cc8b8a0e195babsalomon@google.com const GrTextureParams& params) { 51208283afc265f1153834256fc1012519813ba6b73bsalomon@google.com GrAssert(!this->getStage(stageIdx).getEffect()); 51368b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com GrEffectRef* effect = GrSimpleTextureEffect::Create(texture, matrix, params); 514adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com this->setEffect(stageIdx, effect)->unref(); 5151ce49fc91714ce8974d11246d29ebe7b97b5fe98bsalomon@google.com } 5161ce49fc91714ce8974d11246d29ebe7b97b5fe98bsalomon@google.com 5177d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com bool stagesDisabled() { 5187d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com for (int i = 0; i < kNumStages; ++i) { 51908283afc265f1153834256fc1012519813ba6b73bsalomon@google.com if (NULL != fStages[i].getEffect()) { 5207d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com return false; 5217d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com } 5227d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com } 5233eee8fbe0f280bc1dea59dc0b0ebd8021b51137ftomhudson@google.com return true; 5247d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com } 525676e66096c60615bac52f365111596de5c4ca8a6tomhudson@google.com 526adc6536fe5baff2216fb76ecda6cc81c61109d5cbsalomon@google.com void disableStage(int stageIdx) { this->setEffect(stageIdx, NULL); } 527676e66096c60615bac52f365111596de5c4ca8a6tomhudson@google.com 528972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com /** 529f271cc7183fe48ac64d2d9a454eb013c91b42d53bsalomon@google.com * Release all the GrEffects referred to by this draw state. 530972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com */ 5317d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com void disableStages() { 532972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com for (int i = 0; i < kNumStages; ++i) { 533676e66096c60615bac52f365111596de5c4ca8a6tomhudson@google.com this->disableStage(i); 534972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com } 535972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com } 536972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com 5377d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com class AutoStageDisable : public ::GrNoncopyable { 538972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com public: 5397d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com AutoStageDisable(GrDrawState* ds) : fDrawState(ds) {} 5407d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com ~AutoStageDisable() { 541972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com if (NULL != fDrawState) { 5427d6afdd795eb4c7ce8f5a327117cfdba5f957ddbtomhudson@google.com fDrawState->disableStages(); 543972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com } 544972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com } 545972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com private: 546972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com GrDrawState* fDrawState; 547972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com }; 548972265db219ce25b5159879c75e6c62efaf0fa79robertphillips@google.com 5498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 55008283afc265f1153834256fc1012519813ba6b73bsalomon@google.com * Returns the current stage by index. 5518f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 55208283afc265f1153834256fc1012519813ba6b73bsalomon@google.com const GrEffectStage& getStage(int stageIdx) const { 55308283afc265f1153834256fc1012519813ba6b73bsalomon@google.com GrAssert((unsigned)stageIdx < kNumStages); 55408283afc265f1153834256fc1012519813ba6b73bsalomon@google.com return fStages[stageIdx]; 5558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 5568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 5578f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 558288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com * Called when the source coord system is changing. preConcat gives the transformation from the 559288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com * old coord system to the new coord system. 5608f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 561b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com void preConcatStageMatrices(const SkMatrix& preConcat) { 562cabe00eaced87016647029b6fee08f24dcd062f3bsalomon@google.com this->preConcatStageMatrices(~0U, preConcat); 563cabe00eaced87016647029b6fee08f24dcd062f3bsalomon@google.com } 564cabe00eaced87016647029b6fee08f24dcd062f3bsalomon@google.com /** 565cabe00eaced87016647029b6fee08f24dcd062f3bsalomon@google.com * Version of above that applies the update matrix selectively to stages via a mask. 566cabe00eaced87016647029b6fee08f24dcd062f3bsalomon@google.com */ 567cabe00eaced87016647029b6fee08f24dcd062f3bsalomon@google.com void preConcatStageMatrices(uint32_t stageMask, const SkMatrix& preConcat) { 5688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com for (int i = 0; i < kNumStages; ++i) { 569cabe00eaced87016647029b6fee08f24dcd062f3bsalomon@google.com if (((1 << i) & stageMask) && this->isStageEnabled(i)) { 57008283afc265f1153834256fc1012519813ba6b73bsalomon@google.com fStages[i].preConcatCoordChange(preConcat); 5718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 5728f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 5738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 5748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 575e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com /** 576288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com * Called when the source coord system is changing. preConcatInverse is the inverse of the 577288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com * transformation from the old coord system to the new coord system. Returns false if the matrix 578288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com * cannot be inverted. 579e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com */ 580b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com bool preConcatStageMatricesWithInverse(const SkMatrix& preConcatInverse) { 581b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com SkMatrix inv; 582e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com bool computed = false; 583e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com for (int i = 0; i < kNumStages; ++i) { 584e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com if (this->isStageEnabled(i)) { 585288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com if (!computed && !preConcatInverse.invert(&inv)) { 586e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com return false; 587e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com } else { 588e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com computed = true; 589e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com } 59008283afc265f1153834256fc1012519813ba6b73bsalomon@google.com fStages[i].preConcatCoordChange(preConcatInverse); 591e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com } 592e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com } 593e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com return true; 594e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com } 595e3d3216fe17b6afb2e613271b5246a2766e12df6bsalomon@google.com 5968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 5978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 5988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 5998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Coverage / Color Stages 6008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 6018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * A common pattern is to compute a color with the initial stages and then 6048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * modulate that color by a coverage value in later stage(s) (AA, mask- 605d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * filters, glyph mask, etc). Color-filters, xfermodes, etc should be 606d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * computed based on the pre-coverage-modulated color. The division of 607d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * stages between color-computing and coverage-computing is specified by 6088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * this method. Initially this is kNumStages (all stages 6098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * are color-computing). 6108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setFirstCoverageStage(int firstCoverageStage) { 6128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert((unsigned)firstCoverageStage <= kNumStages); 613ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fFirstCoverageStage = firstCoverageStage; 6148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Gets the index of the first coverage-computing stage. 6188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com int getFirstCoverageStage() const { 620ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return fCommon.fFirstCoverageStage; 6218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com ///@} 6248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 6268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Blending 6278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 6288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6301e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com * Sets the blending function coefficients. 6318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 6328f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * The blend function will be: 6338f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * D' = sat(S*srcCoef + D*dstCoef) 6348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 6358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * where D is the existing destination color, S is the incoming source 6368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * color, and D' is the new destination color that will be written. sat() 6378f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * is the saturation function. 6388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 6391e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com * @param srcCoef coefficient applied to the src color. 6401e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com * @param dstCoef coefficient applied to the dst color. 6418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setBlendFunc(GrBlendCoeff srcCoeff, GrBlendCoeff dstCoeff) { 643ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fSrcBlend = srcCoeff; 644ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fDstBlend = dstCoeff; 6458f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com #if GR_DEBUG 6468f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com switch (dstCoeff) { 64747059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com case kDC_GrBlendCoeff: 64847059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com case kIDC_GrBlendCoeff: 64947059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com case kDA_GrBlendCoeff: 65047059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com case kIDA_GrBlendCoeff: 6518f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrPrintf("Unexpected dst blend coeff. Won't work correctly with" 6528f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com "coverage stages.\n"); 6538f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com break; 6548f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com default: 6558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com break; 6568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6578f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com switch (srcCoeff) { 65847059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com case kSC_GrBlendCoeff: 65947059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com case kISC_GrBlendCoeff: 66047059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com case kSA_GrBlendCoeff: 66147059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com case kISA_GrBlendCoeff: 6628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrPrintf("Unexpected src blend coeff. Won't work correctly with" 6638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com "coverage stages.\n"); 6648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com break; 6658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com default: 6668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com break; 6678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com #endif 6698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6708f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 671ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrBlendCoeff getSrcBlendCoeff() const { return fCommon.fSrcBlend; } 672ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrBlendCoeff getDstBlendCoeff() const { return fCommon.fDstBlend; } 6738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void getDstBlendCoeff(GrBlendCoeff* srcBlendCoeff, 6758f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrBlendCoeff* dstBlendCoeff) const { 676ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com *srcBlendCoeff = fCommon.fSrcBlend; 677ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com *dstBlendCoeff = fCommon.fDstBlend; 6788f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6798f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6818f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the blending function constant referenced by the following blending 6821e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com * coefficients: 68347059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com * kConstC_GrBlendCoeff 68447059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com * kIConstC_GrBlendCoeff 68547059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com * kConstA_GrBlendCoeff 68647059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com * kIConstA_GrBlendCoeff 6878f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 6888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param constant the constant to set 6898f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 690ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com void setBlendConstant(GrColor constant) { fCommon.fBlendConstant = constant; } 6918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6928f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6938f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Retrieves the last value set by setBlendConstant() 6948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return the blending constant value 6958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 696ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrColor getBlendConstant() const { return fCommon.fBlendConstant; } 6978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 6998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 7018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name View Matrix 7028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 7038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 705a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com * Sets the matrix applied to vertex positions. 7068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 7078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * In the post-view-matrix space the rectangle [0,w]x[0,h] 7088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * fully covers the render target. (w and h are the width and height of the 709ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com * the render-target.) 7108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 711ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com void setViewMatrix(const SkMatrix& m) { fCommon.fViewMatrix = m; } 7128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 7148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Gets a writable pointer to the view matrix. 7158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 716ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com SkMatrix* viewMatrix() { return &fCommon.fViewMatrix; } 7178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 7198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Multiplies the current view matrix by a matrix 7208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 7218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * After this call V' = V*m where V is the old view matrix, 7228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * m is the parameter to this function, and V' is the new view matrix. 7238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * (We consider positions to be column vectors so position vector p is 7248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * transformed by matrix X as p' = X*p.) 7258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 7268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param m the matrix used to modify the view matrix. 7278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 728ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com void preConcatViewMatrix(const SkMatrix& m) { fCommon.fViewMatrix.preConcat(m); } 7298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7308f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 7318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Multiplies the current view matrix by a matrix 7328f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 7338f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * After this call V' = m*V where V is the old view matrix, 7348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * m is the parameter to this function, and V' is the new view matrix. 7358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * (We consider positions to be column vectors so position vector p is 7368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * transformed by matrix X as p' = X*p.) 7378f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 7388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param m the matrix used to modify the view matrix. 7398f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 740ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com void postConcatViewMatrix(const SkMatrix& m) { fCommon.fViewMatrix.postConcat(m); } 7418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 7438f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Retrieves the current view matrix 7448f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return the current view matrix. 7458f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 746ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com const SkMatrix& getViewMatrix() const { return fCommon.fViewMatrix; } 7478f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7488f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 7498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Retrieves the inverse of the current view matrix. 7508f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 7518f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * If the current view matrix is invertible, return true, and if matrix 7528f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * is non-null, copy the inverse into it. If the current view matrix is 7538f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * non-invertible, return false and ignore the matrix parameter. 7548f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 7558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param matrix if not null, will receive a copy of the current inverse. 7568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 757b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com bool getViewInverse(SkMatrix* matrix) const { 7588f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // TODO: determine whether we really need to leave matrix unmodified 7598f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // at call sites when inversion fails. 760b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com SkMatrix inverse; 761ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com if (fCommon.fViewMatrix.invert(&inverse)) { 7628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (matrix) { 7638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com *matrix = inverse; 7648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 7658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return true; 7668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 7678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return false; 7688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 7698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7705b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com //////////////////////////////////////////////////////////////////////////// 7715b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com 7725b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com /** 7732fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com * Preconcats the current view matrix and restores the previous view matrix in the destructor. 774c196b522d06919885c6bbe28b7b06d2e5b2cb9bfbsalomon@google.com * Effect matrices are automatically adjusted to compensate. 7755b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com */ 7768f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com class AutoViewMatrixRestore : public ::GrNoncopyable { 7778f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com public: 7788f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com AutoViewMatrixRestore() : fDrawState(NULL) {} 7792fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 7802fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com AutoViewMatrixRestore(GrDrawState* ds, 781b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com const SkMatrix& preconcatMatrix, 7822fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com uint32_t explicitCoordStageMask = 0) { 7838f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState = NULL; 7842fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com this->set(ds, preconcatMatrix, explicitCoordStageMask); 7858f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 7862fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 7872fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com ~AutoViewMatrixRestore() { this->restore(); } 7882fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 789a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com /** 790a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com * Can be called prior to destructor to restore the original matrix. 791a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com */ 7922fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com void restore(); 793f467ce7bc33af5f496e0619387551aedec6d2517skia.committer@gmail.com 7942fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com void set(GrDrawState* drawState, 795b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com const SkMatrix& preconcatMatrix, 7962fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com uint32_t explicitCoordStageMask = 0); 7972fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 798ded4f4b163f5aa19c22c871178c55ecb34623846bsalomon@google.com bool isSet() const { return NULL != fDrawState; } 7992fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 8008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com private: 801288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com GrDrawState* fDrawState; 802b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com SkMatrix fViewMatrix; 80308283afc265f1153834256fc1012519813ba6b73bsalomon@google.com GrEffectStage::SavedCoordChange fSavedCoordChanges[GrDrawState::kNumStages]; 804288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com uint32_t fRestoreMask; 8059381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com }; 8069381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 8075b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com //////////////////////////////////////////////////////////////////////////// 8085b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com 8095b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com /** 8102fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com * This sets the view matrix to identity and adjusts stage matrices to compensate. The 8112fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com * destructor undoes the changes, restoring the view matrix that was set before the 8122fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com * constructor. It is similar to passing the inverse of the current view matrix to 8132fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com * AutoViewMatrixRestore, but lazily computes the inverse only if necessary. 8145b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com */ 8155b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com class AutoDeviceCoordDraw : ::GrNoncopyable { 8165b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com public: 8172fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com AutoDeviceCoordDraw() : fDrawState(NULL) {} 8185b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com /** 8192fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com * If a stage's texture matrix is applied to explicit per-vertex coords, rather than to 8202fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com * positions, then we don't want to modify its matrix. The explicitCoordStageMask is used 8212fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com * to specify such stages. 8225b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com */ 8235b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com AutoDeviceCoordDraw(GrDrawState* drawState, 8242fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com uint32_t explicitCoordStageMask = 0) { 8252fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com fDrawState = NULL; 8262fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com this->set(drawState, explicitCoordStageMask); 8272fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com } 8282fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 829a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com ~AutoDeviceCoordDraw() { this->restore(); } 830a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com 8312fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com bool set(GrDrawState* drawState, uint32_t explicitCoordStageMask = 0); 8322fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 833a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com /** 834a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com * Returns true if this object was successfully initialized on to a GrDrawState. It may 835a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com * return false because a non-default constructor or set() were never called or because 836a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com * the view matrix was not invertible. 837a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com */ 8385b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com bool succeeded() const { return NULL != fDrawState; } 8392fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 840a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com /** 841a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com * Returns the matrix that was set previously set on the drawState. This is only valid 842a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com * if succeeded returns true. 843a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com */ 844b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com const SkMatrix& getOriginalMatrix() const { 845a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com GrAssert(this->succeeded()); 846a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com return fViewMatrix; 847a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com } 8482fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 849a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com /** 850a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com * Can be called prior to destructor to restore the original matrix. 851a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com */ 852a834746cc1bd92301fd0840a221ca1623c0bbb29bsalomon@google.com void restore(); 8532fdcdeb86788206c23410109b3e2b7976747fd11bsalomon@google.com 8545b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com private: 855288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com GrDrawState* fDrawState; 856b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com SkMatrix fViewMatrix; 85708283afc265f1153834256fc1012519813ba6b73bsalomon@google.com GrEffectStage::SavedCoordChange fSavedCoordChanges[GrDrawState::kNumStages]; 858288d9549b42a4eb934e814790f2b7a81f017a9c5bsalomon@google.com uint32_t fRestoreMask; 8595b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com }; 8605b3e890c376f2211218c43edd11939cfc78fd60absalomon@google.com 8618f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 8628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 8638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 8648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Render Target 8658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 8668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 8678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 868ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com * Sets the render-target used at the next drawing call 8698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 8708f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param target The render target to set. 8718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 872d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com void setRenderTarget(GrRenderTarget* target) { 873ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fRenderTarget.reset(SkSafeRef(target)); 8749ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com } 8758f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 8768f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 877ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com * Retrieves the currently set render-target. 8788f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 8798f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return The currently set render target. 8808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 881ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com const GrRenderTarget* getRenderTarget() const { return fRenderTarget.get(); } 882ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrRenderTarget* getRenderTarget() { return fRenderTarget.get(); } 8838f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 8848f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com class AutoRenderTargetRestore : public ::GrNoncopyable { 8858f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com public: 886cadbcb8e536f89babb4e165bfdca18384e97d582bsalomon@google.com AutoRenderTargetRestore() : fDrawState(NULL), fSavedTarget(NULL) {} 8878f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com AutoRenderTargetRestore(GrDrawState* ds, GrRenderTarget* newTarget) { 8888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState = NULL; 8897460b378d68217167013ca889a4cdcae742908e7robertphillips@google.com fSavedTarget = NULL; 8908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com this->set(ds, newTarget); 8918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 8929ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com ~AutoRenderTargetRestore() { this->restore(); } 8939ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com 8949ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com void restore() { 8958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (NULL != fDrawState) { 8968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState->setRenderTarget(fSavedTarget); 8979ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com fDrawState = NULL; 8988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 8999ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com GrSafeSetNull(fSavedTarget); 9009ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com } 9019ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com 9029ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com void set(GrDrawState* ds, GrRenderTarget* newTarget) { 9039ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com this->restore(); 9049ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com 9058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (NULL != ds) { 9069ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com GrAssert(NULL == fSavedTarget); 9078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fSavedTarget = ds->getRenderTarget(); 9089ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com SkSafeRef(fSavedTarget); 9098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com ds->setRenderTarget(newTarget); 9109ec075366ed94802a142fc5e948d19a774f85b43robertphillips@google.com fDrawState = ds; 9118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 9128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 9138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com private: 9148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrDrawState* fDrawState; 9158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrRenderTarget* fSavedTarget; 9168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com }; 9178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 9188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 9198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 9208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 9218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Stencil 9228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 9238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 9248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 9258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the stencil settings to use for the next draw. 9268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Changing the clip has the side-effect of possibly zeroing 9278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * out the client settable stencil bits. So multipass algorithms 9288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * using stencil should not change the clip between passes. 9298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param settings the stencil settings to use. 9308f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 9318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setStencil(const GrStencilSettings& settings) { 932ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fStencilSettings = settings; 9338f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 9348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 9358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 9368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Shortcut to disable stencil testing and ops. 9378f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 9388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void disableStencil() { 939ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fStencilSettings.setDisabled(); 9408f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 9418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 942ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com const GrStencilSettings& getStencil() const { return fCommon.fStencilSettings; } 9438f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 944ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrStencilSettings* stencil() { return &fCommon.fStencilSettings; } 9458f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 9468f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 9478f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 9488f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 9498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // @name Edge AA 9501e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com // Edge equations can be specified to perform anti-aliasing. Because the 9517ffe6810c6787f7a353ef3fe8fab3fc6440aae19bsalomon@google.com // edges are specified as per-vertex data, vertices that are shared by 9527ffe6810c6787f7a353ef3fe8fab3fc6440aae19bsalomon@google.com // multiple edges must be split. 9538f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // 9548f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 9558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 9568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 9579381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * When specifying edges as vertex data this enum specifies what type of 95881712883419f76e25d2ffec38a9438284a45a48dbsalomon@google.com * edges are in use. The edges are always 4 SkScalars in memory, even when 9599381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * the edge type requires fewer than 4. 96093c9660cd158c5d0cab0ba4223e4257f699d5bb8bsalomon@google.com * 96193c9660cd158c5d0cab0ba4223e4257f699d5bb8bsalomon@google.com * TODO: Fix the fact that HairLine and Circle edge types use y-down coords. 96293c9660cd158c5d0cab0ba4223e4257f699d5bb8bsalomon@google.com * (either adjust in VS or use origin_upper_left in GLSL) 9639381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com */ 9649381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com enum VertexEdgeType { 9659381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com /* 1-pixel wide line 9669381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 2D implicit line eq (a*x + b*y +c = 0). 4th component unused */ 9679381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com kHairLine_EdgeType, 968d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com /* Quadratic specified by u^2-v canonical coords (only 2 96969cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com components used). Coverage based on signed distance with negative 97093c9660cd158c5d0cab0ba4223e4257f699d5bb8bsalomon@google.com being inside, positive outside. Edge specified in window space 97193c9660cd158c5d0cab0ba4223e4257f699d5bb8bsalomon@google.com (y-down) */ 97269cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com kQuad_EdgeType, 97369cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com /* Same as above but for hairline quadratics. Uses unsigned distance. 97469cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com Coverage is min(0, 1-distance). */ 97569cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com kHairQuad_EdgeType, 97693c9660cd158c5d0cab0ba4223e4257f699d5bb8bsalomon@google.com /* Circle specified as center_x, center_y, outer_radius, inner_radius 97793c9660cd158c5d0cab0ba4223e4257f699d5bb8bsalomon@google.com all in window space (y-down). */ 97893c9660cd158c5d0cab0ba4223e4257f699d5bb8bsalomon@google.com kCircle_EdgeType, 97946d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com /* Axis-aligned ellipse specified as center_x, center_y, x_radius, x_radius/y_radius 98046d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com all in window space (y-down). */ 98146d3d39e65e0b3ea2ad7c91c176ccafb4df0fa24jvanverth@google.com kEllipse_EdgeType, 98269cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com 98369cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com kVertexEdgeTypeCnt 9849381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com }; 9859381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 9869381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com /** 987d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * Determines the interpretation per-vertex edge data when the 9888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * kEdge_VertexLayoutBit is set (see GrDrawTarget). When per-vertex edges 9898f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * are not specified the value of this setting has no effect. 9908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 9918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setVertexEdgeType(VertexEdgeType type) { 99269cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com GrAssert(type >=0 && type < kVertexEdgeTypeCnt); 993ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fVertexEdgeType = type; 9948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 9958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 996ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com VertexEdgeType getVertexEdgeType() const { return fCommon.fVertexEdgeType; } 9978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 9988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 9998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 10008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 10018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name State Flags 10028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 10038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 10048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 10058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Flags that affect rendering. Controlled using enable/disableState(). All 10068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * default to disabled. 10078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 10088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com enum StateBits { 10098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 10108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Perform dithering. TODO: Re-evaluate whether we need this bit 10118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 10128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kDither_StateBit = 0x01, 10138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 1014cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * Perform HW anti-aliasing. This means either HW FSAA, if supported by the render target, 1015cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * or smooth-line rendering if a line primitive is drawn and line smoothing is supported by 1016cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * the 3D API. 10178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 10188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kHWAntialias_StateBit = 0x02, 10198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 10208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Draws will respect the clip, otherwise the clip is ignored. 10218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 10228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kClip_StateBit = 0x04, 10238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 10248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Disables writing to the color buffer. Useful when performing stencil 10258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * operations. 10268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 10278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kNoColorWrites_StateBit = 0x08, 10280342a85091fd430c90a142d155dc9642aa729d9ebsalomon@google.com 1029cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com /** 1030cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * Usually coverage is applied after color blending. The color is blended using the coeffs 1031cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * specified by setBlendFunc(). The blended color is then combined with dst using coeffs 1032cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * of src_coverage, 1-src_coverage. Sometimes we are explicitly drawing a coverage mask. In 1033cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * this case there is no distinction between coverage and color and the caller needs direct 1034cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * control over the blend coeffs. When set, there will be a single blend step controlled by 1035cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * setBlendFunc() which will use coverage*color as the src color. 1036cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com */ 1037cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com kCoverageDrawing_StateBit = 0x10, 1038cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com 10398f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // Users of the class may add additional bits to the vector 10408f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kDummyStateBit, 10418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kLastPublicStateBit = kDummyStateBit-1, 10428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com }; 10438f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 10448f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void resetStateFlags() { 1045ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fFlagBits = 0; 10460fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com } 10470fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 10488f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 10498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Enable render state settings. 10508f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 10511e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com * @param stateBits bitfield of StateBits specifying the states to enable 10528f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 10538f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void enableState(uint32_t stateBits) { 1054ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fFlagBits |= stateBits; 10558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 10560fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 10578f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 10588f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Disable render state settings. 10598f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 10601e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com * @param stateBits bitfield of StateBits specifying the states to disable 10618f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 10628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void disableState(uint32_t stateBits) { 1063ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fFlagBits &= ~(stateBits); 10648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 10650fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 1066d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com /** 1067d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com * Enable or disable stateBits based on a boolean. 1068d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com * 10691e269b5a08610da13c3aee23809bb45b17e7b663bsalomon@google.com * @param stateBits bitfield of StateBits to enable or disable 1070d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com * @param enable if true enable stateBits, otherwise disable 1071d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com */ 1072d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com void setState(uint32_t stateBits, bool enable) { 1073d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com if (enable) { 1074d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com this->enableState(stateBits); 1075d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com } else { 1076d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com this->disableState(stateBits); 1077d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com } 1078d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com } 1079d5d69ffaea117428972db48796f7e75f0d1dab34bsalomon@google.com 10808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isDitherState() const { 1081ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return 0 != (fCommon.fFlagBits & kDither_StateBit); 10828f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 10830fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 10848f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isHWAntialiasState() const { 1085ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return 0 != (fCommon.fFlagBits & kHWAntialias_StateBit); 10868f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 10870fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 10888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isClipState() const { 1089ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return 0 != (fCommon.fFlagBits & kClip_StateBit); 10908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 10910fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 10928f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isColorWriteDisabled() const { 1093ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return 0 != (fCommon.fFlagBits & kNoColorWrites_StateBit); 10948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 10958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1096cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com bool isCoverageDrawing() const { 1097ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return 0 != (fCommon.fFlagBits & kCoverageDrawing_StateBit); 1098cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com } 1099cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com 11008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isStateFlagEnabled(uint32_t stateBit) const { 1101ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return 0 != (stateBit & fCommon.fFlagBits); 11028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 11038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 11048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 11058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 11068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 11078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Face Culling 11088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 11098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 11108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com enum DrawFace { 1111978c8c61ba1e792567e9d8e6629c2c4ee59727b7bsalomon@google.com kInvalid_DrawFace = -1, 1112978c8c61ba1e792567e9d8e6629c2c4ee59727b7bsalomon@google.com 11138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kBoth_DrawFace, 11148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kCCW_DrawFace, 11158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kCW_DrawFace, 11168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com }; 11178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 11188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 11198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Controls whether clockwise, counterclockwise, or both faces are drawn. 11208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param face the face(s) to draw. 11218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 11228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setDrawFace(DrawFace face) { 1123978c8c61ba1e792567e9d8e6629c2c4ee59727b7bsalomon@google.com GrAssert(kInvalid_DrawFace != face); 1124ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon.fDrawFace = face; 11258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 11268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 11278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 11288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Gets whether the target is drawing clockwise, counterclockwise, 11298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * or both faces. 11308f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return the current draw face(s). 11318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1132ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com DrawFace getDrawFace() const { return fCommon.fDrawFace; } 1133d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 11348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 11358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 11368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 113762b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 1138f13f58804659175925042a291304d483a4fd9278tomhudson@google.com bool isStageEnabled(int s) const { 1139f13f58804659175925042a291304d483a4fd9278tomhudson@google.com GrAssert((unsigned)s < kNumStages); 114008283afc265f1153834256fc1012519813ba6b73bsalomon@google.com return (NULL != fStages[s].getEffect()); 1141f13f58804659175925042a291304d483a4fd9278tomhudson@google.com } 1142f13f58804659175925042a291304d483a4fd9278tomhudson@google.com 114362b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // Most stages are usually not used, so conditionals here 114462b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // reduce the expected number of bytes touched by 50%. 11459381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com bool operator ==(const GrDrawState& s) const { 1146ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com if (fRenderTarget.get() != s.fRenderTarget.get() || fCommon != s.fCommon) { 11478fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com return false; 11488fe84b53a64b5d92f3aabdd8e7fc7b2ee15c0a75bsalomon@google.com } 114962b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 115062b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com for (int i = 0; i < kNumStages; i++) { 1151f2f8fc37265a6ef06897117451a3a9238287c13bbsalomon@google.com bool enabled = this->isStageEnabled(i); 1152f2f8fc37265a6ef06897117451a3a9238287c13bbsalomon@google.com if (enabled != s.isStageEnabled(i)) { 1153f2f8fc37265a6ef06897117451a3a9238287c13bbsalomon@google.com return false; 1154f2f8fc37265a6ef06897117451a3a9238287c13bbsalomon@google.com } 115508283afc265f1153834256fc1012519813ba6b73bsalomon@google.com if (enabled && this->fStages[i] != s.fStages[i]) { 115662b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com return false; 115762b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 115862b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 115962b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com return true; 11609381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com } 11619381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com bool operator !=(const GrDrawState& s) const { return !(*this == s); } 116262b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 1163ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrDrawState& operator= (const GrDrawState& s) { 1164ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com this->setRenderTarget(s.fRenderTarget.get()); 1165ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon = s.fCommon; 116662b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com for (int i = 0; i < kNumStages; i++) { 1167e742bf0ab19659145325ac894f7e0b78c8efbd89tomhudson@google.com if (s.isStageEnabled(i)) { 116808283afc265f1153834256fc1012519813ba6b73bsalomon@google.com this->fStages[i] = s.fStages[i]; 116962b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 117062b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 117162b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com return *this; 117262b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 117362b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 117462b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.comprivate: 11752e3d144dfdbc4596d33baef7396316f88f412cc8bsalomon@google.com 1176ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com /** Fields that are identical in GrDrawState and GrDrawState::DeferredState. */ 1177ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com struct CommonState { 1178ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com // These fields are roughly sorted by decreasing likelihood of being different in op== 1179ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrColor fColor; 1180b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com GrVertexLayout fVertexLayout; 1181ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com SkMatrix fViewMatrix; 1182ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrBlendCoeff fSrcBlend; 1183ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrBlendCoeff fDstBlend; 1184ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrColor fBlendConstant; 1185ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com uint32_t fFlagBits; 1186ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com VertexEdgeType fVertexEdgeType; 1187ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrStencilSettings fStencilSettings; 1188ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com int fFirstCoverageStage; 1189ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrColor fCoverage; 1190ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com SkXfermode::Mode fColorFilterMode; 1191ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrColor fColorFilterColor; 1192ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com DrawFace fDrawFace; 1193ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com bool operator== (const CommonState& other) const { 1194ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return fColor == other.fColor && 1195b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com fVertexLayout == other.fVertexLayout && 1196ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fViewMatrix.cheapEqualTo(other.fViewMatrix) && 1197ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fSrcBlend == other.fSrcBlend && 1198ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fDstBlend == other.fDstBlend && 1199ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fBlendConstant == other.fBlendConstant && 1200ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fFlagBits == other.fFlagBits && 1201ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fVertexEdgeType == other.fVertexEdgeType && 1202ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fStencilSettings == other.fStencilSettings && 1203ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fFirstCoverageStage == other.fFirstCoverageStage && 1204ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCoverage == other.fCoverage && 1205ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fColorFilterMode == other.fColorFilterMode && 1206ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fColorFilterColor == other.fColorFilterColor && 1207ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fDrawFace == other.fDrawFace; 1208ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1209ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com bool operator!= (const CommonState& other) const { return !(*this == other); } 1210ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com }; 1211ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 1212ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com /** GrDrawState uses GrEffectStages to hold stage state which holds a ref on GrEffectRef. 1213ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com DeferredState must directly reference GrEffects, however. */ 1214ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com struct SavedEffectStage { 1215ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com SavedEffectStage() : fEffect(NULL) {} 1216ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com const GrEffect* fEffect; 1217ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrEffectStage::SavedCoordChange fCoordChange; 1218ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com }; 1219ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 1220ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.compublic: 1221ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com /** 1222ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com * DeferredState contains all of the data of a GrDrawState but does not hold refs on GrResource 1223ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com * objects. Resources are allowed to hit zero ref count while in DeferredStates. Their internal 1224ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com * dispose mechanism returns them to the cache. This allows recycling resources through the 1225ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com * the cache while they are in a deferred draw queue. 1226ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com */ 1227ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com class DeferredState { 1228ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com public: 1229ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com DeferredState() : fRenderTarget(NULL) { 1230ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GR_DEBUGCODE(fInitialized = false;) 1231ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1232ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com // TODO: Remove this when DeferredState no longer holds a ref to the RT 1233ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com ~DeferredState() { SkSafeUnref(fRenderTarget); } 1234ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 1235ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com void saveFrom(const GrDrawState& drawState) { 1236ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fCommon = drawState.fCommon; 1237ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com // TODO: Here we will copy the GrRenderTarget pointer without taking a ref. 1238ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fRenderTarget = drawState.fRenderTarget.get(); 1239ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com SkSafeRef(fRenderTarget); 1240ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com // Here we ref the effects directly rather than the effect-refs. TODO: When the effect- 1241ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com // ref gets fully unref'ed it will cause the underlying effect to unref its resources 1242ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com // and recycle them to the cache (if no one else is holding a ref to the resources). 1243ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com for (int i = 0; i < kNumStages; ++i) { 1244ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fStages[i].saveFrom(drawState.fStages[i]); 1245ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1246ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GR_DEBUGCODE(fInitialized = true;) 1247ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1248ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 1249ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com void restoreTo(GrDrawState* drawState) { 1250ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrAssert(fInitialized); 1251ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com drawState->fCommon = fCommon; 1252ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com drawState->setRenderTarget(fRenderTarget); 1253ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com for (int i = 0; i < kNumStages; ++i) { 1254ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com fStages[i].restoreTo(&drawState->fStages[i]); 1255ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1256ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1257ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 1258ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com bool isEqual(const GrDrawState& state) const { 1259ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com if (fRenderTarget != state.fRenderTarget.get() || fCommon != state.fCommon) { 1260ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return false; 1261ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1262ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com for (int i = 0; i < kNumStages; ++i) { 1263dcd69bfca1d8e85ef5abc4e54f1e4b820d38e428bsalomon@google.com if (!fStages[i].isEqual(state.fStages[i])) { 1264ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return false; 1265ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1266ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1267ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com return true; 1268ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com } 1269ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 1270ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com private: 1271ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrRenderTarget* fRenderTarget; 1272ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com CommonState fCommon; 1273ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrEffectStage::DeferredStage fStages[kNumStages]; 1274ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 1275ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GR_DEBUGCODE(bool fInitialized;) 1276ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com }; 1277ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com 1278ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.comprivate: 1279ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com SkAutoTUnref<GrRenderTarget> fRenderTarget; 1280ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com CommonState fCommon; 1281ca43208e4aaac817fbc8265542f995f24a3fb7bfbsalomon@google.com GrEffectStage fStages[kNumStages]; 12828f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1283fa35e3ddcc9d130ce87c927218bdf27879c38711reed@google.com typedef GrRefCnt INHERITED; 12849381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com}; 12859381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 12869381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#endif 1287