GrPipelineBuilder.h revision 52a5dcb43b5acbde377f664807b0f75af8bb1666
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 119381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "GrColor.h" 129381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "GrMatrix.h" 138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com#include "GrNoncopyable.h" 149381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "GrSamplerState.h" 159381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "GrStencil.h" 169381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 179381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "SkXfermode.h" 189381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 199381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.comclass GrRenderTarget; 209381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.comclass GrTexture; 219381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 229381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.comstruct GrDrawState { 239381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 249381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com /** 259381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * Number of texture stages. Each stage takes as input a color and 269381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * 2D texture coordinates. The color input to the first enabled stage is the 279381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * per-vertex color or the constant color (setColor/setAlpha) if there are 289381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * no per-vertex colors. For subsequent stages the input color is the output 299381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * color from the previous enabled stage. The output color of each stage is 309381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * the input color modulated with the result of a texture lookup. Texture 319381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * lookups are specified by a texture a sampler (setSamplerState). Texture 329381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * coordinates for each stage come from the vertices based on a 339381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * GrVertexLayout bitfield. The output fragment color is the output color of 349381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * the last enabled stage. The presence or absence of texture coordinates 359381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * for each stage in the vertex layout indicates whether a stage is enabled 369381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * or not. 379381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com */ 389381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com enum { 399381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com kNumStages = 3, 409381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com kMaxTexCoords = kNumStages 419381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com }; 429381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 4339ee0ffa72fbd5df6d3ec6db4fdad0c1bc3946fdbsalomon@google.com /** 4439ee0ffa72fbd5df6d3ec6db4fdad0c1bc3946fdbsalomon@google.com * Bitfield used to indicate a set of stages. 4539ee0ffa72fbd5df6d3ec6db4fdad0c1bc3946fdbsalomon@google.com */ 4639ee0ffa72fbd5df6d3ec6db4fdad0c1bc3946fdbsalomon@google.com typedef uint32_t StageMask; 4739ee0ffa72fbd5df6d3ec6db4fdad0c1bc3946fdbsalomon@google.com GR_STATIC_ASSERT(sizeof(StageMask)*8 >= GrDrawState::kNumStages); 4839ee0ffa72fbd5df6d3ec6db4fdad0c1bc3946fdbsalomon@google.com 498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrDrawState() { 5052a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com this->reset(); 5152a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com } 5252a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com 5352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com /** 5452a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com * Resets to the default state. Sampler states will not be modified. 5552a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com */ 5652a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com void reset() { 578f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // make sure any pad is zero for memcmp 5852a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // all GrDrawState members should default to something valid by the 5952a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // the memset except those initialized individually below. There should 6052a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // be no padding between the individually initialized members. 6152a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com static const size_t kMemsetSize = 6252a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com reinterpret_cast<intptr_t>(&fColor) - 6352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com reinterpret_cast<intptr_t>(this); 6452a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com memset(this, 0, kMemsetSize); 658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // pedantic assertion that our ptrs will 668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // be NULL (0 ptr is mem addr 0) 678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert((intptr_t)(void*)NULL == 0LL); 6852a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GR_STATIC_ASSERT(0 == kBoth_DrawFace); 698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert(fStencilSettings.isDisabled()); 7052a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com 7152a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // memset exceptions 7252a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com fColor = 0xffffffff; 738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fFirstCoverageStage = kNumStages; 7452a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com fColorFilterMode = SkXfermode::kDst_Mode; 7552a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com fSrcBlend = kOne_BlendCoeff; 7652a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com fDstBlend = kZero_BlendCoeff; 7752a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com fViewMatrix.reset(); 7852a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com 7952a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // ensure values that will be memcmp'ed in == but not memset in reset() 8052a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // are tightly packed 8152a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrAssert(kMemsetSize + + sizeof(fColorMatrix) + sizeof(fRenderTarget) + 8252a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com sizeof(fColor) + sizeof(fFirstCoverageStage) + 8352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com sizeof(fColorFilterMode) + sizeof(fSrcBlend) + 8452a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com sizeof(fDstBlend) + sizeof(GrMatrix) == 8552a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com reinterpret_cast<intptr_t>(&fEdgeAANumEdges) - 8652a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com reinterpret_cast<intptr_t>(this)); 8752a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com 8852a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com fEdgeAANumEdges = 0; 898f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 928f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Color 938f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets color for next draw to a premultiplied-alpha color. 978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param color the color to set. 998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setColor(GrColor color) { fColor = color; } 1018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrColor getColor() const { return fColor; } 1038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 1058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the color to be used for the next draw to be 1068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * (r,g,b,a) = (alpha, alpha, alpha, alpha). 1078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 1088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param alpha The alpha value to set as the color. 1098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setAlpha(uint8_t a) { 1118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com this->setColor((a << 24) | (a << 16) | (a << 8) | a); 1128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 1158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Add a color filter that can be represented by a color and a mode. Applied 1168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * after color-computing texture stages. 1178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setColorFilter(GrColor c, SkXfermode::Mode mode) { 1198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fColorFilterColor = c; 1208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fColorFilterMode = mode; 1218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrColor getColorFilterColor() const { return fColorFilterColor; } 1248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com SkXfermode::Mode getColorFilterMode() const { return fColorFilterMode; } 1258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 1278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 1298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Textures 1308f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 1318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1328f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 1338f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the texture used at the next drawing call 1348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 1358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param stage The texture stage for which the texture will be set 1368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 1378f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param texture The texture to set. Can be NULL though there is no 1388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * advantage to settings a NULL texture if doing non-textured drawing 1398f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1408f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setTexture(int stage, GrTexture* texture) { 1418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert((unsigned)stage < kNumStages); 1428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fTextures[stage] = texture; 1438f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1448f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1458f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 1468f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Retrieves the currently set texture. 1478f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 1488f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return The currently set texture. The return value will be NULL if no 1498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * texture has been set, NULL was most recently passed to 1508f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * setTexture, or the last setTexture was destroyed. 1518f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1528f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com const GrTexture* getTexture(int stage) const { 1538f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert((unsigned)stage < kNumStages); 1548f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return fTextures[stage]; 1558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrTexture* getTexture(int stage) { 1578f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert((unsigned)stage < kNumStages); 1588f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return fTextures[stage]; 1598f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1608f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1618f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 1628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 1648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Samplers 1658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 1668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 1688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Returns the current sampler for a stage. 1698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1708f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com const GrSamplerState& getSampler(int stage) const { 1718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert((unsigned)stage < kNumStages); 1728f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return fSamplerStates[stage]; 1738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1758f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 1768f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Writable pointer to a stage's sampler. 1778f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1788f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrSamplerState* sampler(int stage) { 1798f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert((unsigned)stage < kNumStages); 1808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return fSamplerStates + stage; 1818f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1828f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1838f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 1848f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Preconcats the matrix of all samplers in the mask with the same matrix. 1858f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 1868f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void preConcatSamplerMatrices(StageMask stageMask, const GrMatrix& matrix) { 1878f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert(!(stageMask & kIllegalStageMaskBits)); 1888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com for (int i = 0; i < kNumStages; ++i) { 1898f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if ((1 << i) & stageMask) { 1908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fSamplerStates[i].preConcatMatrix(matrix); 1918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1928f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1938f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 1948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 1968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 1978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 1988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Coverage / Color Stages 1998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 2008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 2028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * A common pattern is to compute a color with the initial stages and then 2038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * modulate that color by a coverage value in later stage(s) (AA, mask- 2048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * filters, glyph mask, etc). Color-filters, xfermodes, etc should be 2058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * computed based on the pre-coverage-modulated color. The division of 2068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * stages between color-computing and coverage-computing is specified by 2078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * this method. Initially this is kNumStages (all stages 2088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * are color-computing). 2098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 2108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setFirstCoverageStage(int firstCoverageStage) { 2118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert((unsigned)firstCoverageStage <= kNumStages); 2128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fFirstCoverageStage = firstCoverageStage; 2138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 2148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 2168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Gets the index of the first coverage-computing stage. 2178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 2188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com int getFirstCoverageStage() const { 2198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return fFirstCoverageStage; 2208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 2218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com ///@} 2238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 2258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Blending 2268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 2278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 2298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the blending function coeffecients. 2308f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 2318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * The blend function will be: 2328f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * D' = sat(S*srcCoef + D*dstCoef) 2338f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 2348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * where D is the existing destination color, S is the incoming source 2358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * color, and D' is the new destination color that will be written. sat() 2368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * is the saturation function. 2378f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 2388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param srcCoef coeffecient applied to the src color. 2398f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param dstCoef coeffecient applied to the dst color. 2408f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 2418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setBlendFunc(GrBlendCoeff srcCoeff, GrBlendCoeff dstCoeff) { 2428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fSrcBlend = srcCoeff; 2438f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDstBlend = dstCoeff; 2448f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com #if GR_DEBUG 2458f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com switch (dstCoeff) { 2468f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com case kDC_BlendCoeff: 2478f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com case kIDC_BlendCoeff: 2488f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com case kDA_BlendCoeff: 2498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com case kIDA_BlendCoeff: 2508f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrPrintf("Unexpected dst blend coeff. Won't work correctly with" 2518f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com "coverage stages.\n"); 2528f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com break; 2538f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com default: 2548f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com break; 2558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 2568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com switch (srcCoeff) { 2578f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com case kSC_BlendCoeff: 2588f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com case kISC_BlendCoeff: 2598f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com case kSA_BlendCoeff: 2608f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com case kISA_BlendCoeff: 2618f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrPrintf("Unexpected src blend coeff. Won't work correctly with" 2628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com "coverage stages.\n"); 2638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com break; 2648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com default: 2658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com break; 2668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 2678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com #endif 2688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 2698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2708f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrBlendCoeff getSrcBlendCoeff() const { return fSrcBlend; } 2718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrBlendCoeff getDstBlendCoeff() const { return fDstBlend; } 2728f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void getDstBlendCoeff(GrBlendCoeff* srcBlendCoeff, 2748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrBlendCoeff* dstBlendCoeff) const { 2758f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com *srcBlendCoeff = fSrcBlend; 2768f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com *dstBlendCoeff = fDstBlend; 2778f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 2788f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2798f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 2808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the blending function constant referenced by the following blending 2818f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * coeffecients: 2828f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * kConstC_BlendCoeff 2838f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * kIConstC_BlendCoeff 2848f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * kConstA_BlendCoeff 2858f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * kIConstA_BlendCoeff 2868f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 2878f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param constant the constant to set 2888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 2898f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setBlendConstant(GrColor constant) { fBlendConstant = constant; } 2908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 2928f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Retrieves the last value set by setBlendConstant() 2938f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return the blending constant value 2948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 2958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrColor getBlendConstant() const { return fBlendConstant; } 2968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 2988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 2998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 3008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name View Matrix 3018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 3028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 3038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 3048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the matrix applied to veretx positions. 3058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 3068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * In the post-view-matrix space the rectangle [0,w]x[0,h] 3078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * fully covers the render target. (w and h are the width and height of the 3088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * the rendertarget.) 3098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 3108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setViewMatrix(const GrMatrix& m) { fViewMatrix = m; } 3118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 3128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 3138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Gets a writable pointer to the view matrix. 3148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 3158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrMatrix* viewMatrix() { return &fViewMatrix; } 3168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 3178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 3188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Multiplies the current view matrix by a matrix 3198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 3208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * After this call V' = V*m where V is the old view matrix, 3218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * m is the parameter to this function, and V' is the new view matrix. 3228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * (We consider positions to be column vectors so position vector p is 3238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * transformed by matrix X as p' = X*p.) 3248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 3258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param m the matrix used to modify the view matrix. 3268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 3278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void preConcatViewMatrix(const GrMatrix& m) { fViewMatrix.preConcat(m); } 3288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 3298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 3308f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Multiplies the current view matrix by a matrix 3318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 3328f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * After this call V' = m*V where V is the old view matrix, 3338f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * m is the parameter to this function, and V' is the new view matrix. 3348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * (We consider positions to be column vectors so position vector p is 3358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * transformed by matrix X as p' = X*p.) 3368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 3378f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param m the matrix used to modify the view matrix. 3388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 3398f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void postConcatViewMatrix(const GrMatrix& m) { fViewMatrix.postConcat(m); } 3408f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 3418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 3428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Retrieves the current view matrix 3438f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return the current view matrix. 3448f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 3458f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com const GrMatrix& getViewMatrix() const { return fViewMatrix; } 3468f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 3478f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 3488f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Retrieves the inverse of the current view matrix. 3498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 3508f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * If the current view matrix is invertible, return true, and if matrix 3518f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * is non-null, copy the inverse into it. If the current view matrix is 3528f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * non-invertible, return false and ignore the matrix parameter. 3538f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 3548f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param matrix if not null, will receive a copy of the current inverse. 3558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 3568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool getViewInverse(GrMatrix* matrix) const { 3578f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // TODO: determine whether we really need to leave matrix unmodified 3588f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // at call sites when inversion fails. 3598f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrMatrix inverse; 3608f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (fViewMatrix.invert(&inverse)) { 3618f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (matrix) { 3628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com *matrix = inverse; 3638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return true; 3658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return false; 3678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 3698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com class AutoViewMatrixRestore : public ::GrNoncopyable { 3708f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com public: 3718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com AutoViewMatrixRestore() : fDrawState(NULL) {} 3728f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com AutoViewMatrixRestore(GrDrawState* ds, const GrMatrix& newMatrix) { 3738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState = NULL; 3748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com this->set(ds, newMatrix); 3758f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3768f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com AutoViewMatrixRestore(GrDrawState* ds) { 3778f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState = NULL; 3788f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com this->set(ds); 3798f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com ~AutoViewMatrixRestore() { 3818f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com this->set(NULL, GrMatrix::I()); 3828f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3838f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void set(GrDrawState* ds, const GrMatrix& newMatrix) { 3848f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (NULL != fDrawState) { 3858f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState->setViewMatrix(fSavedMatrix); 3868f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3878f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (NULL != ds) { 3888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fSavedMatrix = ds->getViewMatrix(); 3898f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com ds->setViewMatrix(newMatrix); 3908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState = ds; 3928f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3938f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void set(GrDrawState* ds) { 3948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (NULL != fDrawState) { 3958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState->setViewMatrix(fSavedMatrix); 3968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 3978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (NULL != ds) { 3988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fSavedMatrix = ds->getViewMatrix(); 3998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState = ds; 4018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com private: 4038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrDrawState* fDrawState; 4048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrMatrix fSavedMatrix; 4059381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com }; 4069381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 4078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 4088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 4108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Render Target 4118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 4128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 4148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the rendertarget used at the next drawing call 4158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 4168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param target The render target to set. 4178f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 4188f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setRenderTarget(GrRenderTarget* target) { fRenderTarget = target; } 4198f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4208f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 4218f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Retrieves the currently set rendertarget. 4228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 4238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return The currently set render target. 4248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 4258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com const GrRenderTarget* getRenderTarget() const { return fRenderTarget; } 4268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrRenderTarget* getRenderTarget() { return fRenderTarget; } 4278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com class AutoRenderTargetRestore : public ::GrNoncopyable { 4298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com public: 430cadbcb8e536f89babb4e165bfdca18384e97d582bsalomon@google.com AutoRenderTargetRestore() : fDrawState(NULL), fSavedTarget(NULL) {} 4318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com AutoRenderTargetRestore(GrDrawState* ds, GrRenderTarget* newTarget) { 4328f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState = NULL; 4338f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com this->set(ds, newTarget); 4348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com ~AutoRenderTargetRestore() { this->set(NULL, NULL); } 4368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void set(GrDrawState* ds, GrRenderTarget* newTarget) { 4378f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (NULL != fDrawState) { 4388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState->setRenderTarget(fSavedTarget); 4398f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4408f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com if (NULL != ds) { 4418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fSavedTarget = ds->getRenderTarget(); 4428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com ds->setRenderTarget(newTarget); 4438f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4448f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawState = ds; 4458f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4468f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com private: 4478f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrDrawState* fDrawState; 4488f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrRenderTarget* fSavedTarget; 4498f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com }; 4508f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4518f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 4528f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4538f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 4548f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Stencil 4558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 4568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4578f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 4588f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the stencil settings to use for the next draw. 4598f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Changing the clip has the side-effect of possibly zeroing 4608f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * out the client settable stencil bits. So multipass algorithms 4618f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * using stencil should not change the clip between passes. 4628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param settings the stencil settings to use. 4638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 4648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setStencil(const GrStencilSettings& settings) { 4658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fStencilSettings = settings; 4668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 4698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Shortcut to disable stencil testing and ops. 4708f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 4718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void disableStencil() { 4728f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fStencilSettings.setDisabled(); 4738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 4748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4758f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com const GrStencilSettings& getStencil() const { return fStencilSettings; } 4768f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4778f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrStencilSettings* stencil() { return &fStencilSettings; } 4788f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4798f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 4808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 4818f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 48250bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org /// @name Color Matrix 48350bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org //// 48450bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org 48550bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org /** 48650bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org * Sets the color matrix to use for the next draw. 48750bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org * @param matrix the 5x4 matrix to apply to the incoming color 48850bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org */ 48950bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org void setColorMatrix(const float matrix[20]) { 49050bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org memcpy(fColorMatrix, matrix, sizeof(fColorMatrix)); 49150bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org } 49250bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org 49350bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org const float* getColorMatrix() const { return fColorMatrix; } 49450bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org 49550bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org /// @} 49650bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org 49750bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org /////////////////////////////////////////////////////////////////////////// 4988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // @name Edge AA 4998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // There are two ways to perform antialiasing using edge equations. One 5008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // is to specify an (linear or quadratic) edge eq per-vertex. This requires 5018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // splitting vertices shared by primitives. 5028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // 5038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // The other is via setEdgeAAData which sets a set of edges and each 5048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // is tested against all the edges. 5058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 5068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 5078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 5089381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * When specifying edges as vertex data this enum specifies what type of 5099381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * edges are in use. The edges are always 4 GrScalars in memory, even when 5109381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * the edge type requires fewer than 4. 5119381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com */ 5129381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com enum VertexEdgeType { 5139381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com /* 1-pixel wide line 5149381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 2D implicit line eq (a*x + b*y +c = 0). 4th component unused */ 5159381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com kHairLine_EdgeType, 51669cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com /* Quadratic specified by u^2-v canonical coords (only 2 51769cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com components used). Coverage based on signed distance with negative 51869cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com being inside, positive outside.*/ 51969cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com kQuad_EdgeType, 52069cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com /* Same as above but for hairline quadratics. Uses unsigned distance. 52169cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com Coverage is min(0, 1-distance). */ 52269cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com kHairQuad_EdgeType, 52369cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com 52469cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com kVertexEdgeTypeCnt 5259381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com }; 5269381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 5279381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com /** 5288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Determines the interpretation per-vertex edge data when the 5298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * kEdge_VertexLayoutBit is set (see GrDrawTarget). When per-vertex edges 5308f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * are not specified the value of this setting has no effect. 5318f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 5328f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setVertexEdgeType(VertexEdgeType type) { 53369cc6ad20ed03f35f9d3c8119a2c32187669a22bbsalomon@google.com GrAssert(type >=0 && type < kVertexEdgeTypeCnt); 5348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fVertexEdgeType = type; 5358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 5368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 53752a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com VertexEdgeType getVertexEdgeType() const { return fVertexEdgeType; } 5388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 5398f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 5409381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * The absolute maximum number of edges that may be specified for 5419381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * a single draw call when performing edge antialiasing. This is used for 5429381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * the size of several static buffers, so implementations of getMaxEdges() 5439381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com * (below) should clamp to this value. 5449381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com */ 5459381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com enum { 54662b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // TODO: this should be 32 when GrTesselatedPathRenderer is used 54762b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // Visual Studio 2010 does not permit a member array of size 0. 54862b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com kMaxEdges = 1 5499381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com }; 5509381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 5519381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com class Edge { 5529381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com public: 5539381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com Edge() {} 5549381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com Edge(float x, float y, float z) : fX(x), fY(y), fZ(z) {} 5559381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com GrPoint intersect(const Edge& other) { 5569381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com return GrPoint::Make( 55772e49b8982586a5d8b0425f16d909c05a36ea8c3bsalomon@google.com SkFloatToScalar((fY * other.fZ - other.fY * fZ) / 55872e49b8982586a5d8b0425f16d909c05a36ea8c3bsalomon@google.com (fX * other.fY - other.fX * fY)), 55972e49b8982586a5d8b0425f16d909c05a36ea8c3bsalomon@google.com SkFloatToScalar((fX * other.fZ - other.fX * fZ) / 56072e49b8982586a5d8b0425f16d909c05a36ea8c3bsalomon@google.com (other.fX * fY - fX * other.fY))); 5619381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com } 5629381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com float fX, fY, fZ; 5639381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com }; 5649381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 5658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 5668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Sets the edge data required for edge antialiasing. 5678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 5688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param edges 3 * numEdges float values, representing the edge 5698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * equations in Ax + By + C form 5708f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 5718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setEdgeAAData(const Edge* edges, int numEdges) { 5728f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com GrAssert(numEdges <= GrDrawState::kMaxEdges); 5738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com memcpy(fEdgeAAEdges, edges, numEdges * sizeof(GrDrawState::Edge)); 5748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fEdgeAANumEdges = numEdges; 5758f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 5760fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 5778f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com int getNumAAEdges() const { return fEdgeAANumEdges; } 5780fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 5798f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com const Edge* getAAEdges() const { return fEdgeAAEdges; } 5808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 5818f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 5828f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 5838f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 5848f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name State Flags 5858f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 5868f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 5878f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 5888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Flags that affect rendering. Controlled using enable/disableState(). All 5898f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * default to disabled. 5908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 5918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com enum StateBits { 5928f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 5938f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Perform dithering. TODO: Re-evaluate whether we need this bit 5948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 5958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kDither_StateBit = 0x01, 5968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 5978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Perform HW anti-aliasing. This means either HW FSAA, if supported 5988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * by the render target, or smooth-line rendering if a line primitive 5998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * is drawn and line smoothing is supported by the 3D API. 6008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kHWAntialias_StateBit = 0x02, 6028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6038f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Draws will respect the clip, otherwise the clip is ignored. 6048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kClip_StateBit = 0x04, 6068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Disables writing to the color buffer. Useful when performing stencil 6088f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * operations. 6098f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6108f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kNoColorWrites_StateBit = 0x08, 6118f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6128f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Modifies the behavior of edge AA specified by setEdgeAA. If set, 6138f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * will test edge pairs for convexity when rasterizing. Set this if the 6148f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * source polygon is non-convex. 6158f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6168f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kEdgeAAConcave_StateBit = 0x10, 61750bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org /** 61850bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org * Draws will apply the color matrix, otherwise the color matrix is 61950bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org * ignored. 62050bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org */ 62150bdad85db2fe6be4d0bf0c5b6473f712b1bdd32senorblanco@chromium.org kColorMatrix_StateBit = 0x20, 6228f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6238f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // Users of the class may add additional bits to the vector 6248f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kDummyStateBit, 6258f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kLastPublicStateBit = kDummyStateBit-1, 6268f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com }; 6278f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6288f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void resetStateFlags() { 6298f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fFlagBits = 0; 6300fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com } 6310fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 6328f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6338f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Enable render state settings. 6348f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 6358f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param flags bitfield of StateBits specifing the states to enable 6368f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6378f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void enableState(uint32_t stateBits) { 6388f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fFlagBits |= stateBits; 6398f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6400fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 6418f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Disable render state settings. 6438f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * 6448f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param flags bitfield of StateBits specifing the states to disable 6458f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6468f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void disableState(uint32_t stateBits) { 6478f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fFlagBits &= ~(stateBits); 6488f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6490fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 6508f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isDitherState() const { 6518f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return 0 != (fFlagBits & kDither_StateBit); 6528f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6530fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 6548f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isHWAntialiasState() const { 6558f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return 0 != (fFlagBits & kHWAntialias_StateBit); 6568f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6570fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 6588f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isClipState() const { 6598f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return 0 != (fFlagBits & kClip_StateBit); 6608f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6610fec61d19ca9088d54f58bd0a67150171b83d66cbsalomon@google.com 6628f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isColorWriteDisabled() const { 6638f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return 0 != (fFlagBits & kNoColorWrites_StateBit); 6648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isConcaveEdgeAAState() const { 6678f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return 0 != (fFlagBits & kEdgeAAConcave_StateBit); 6688f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6708f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com bool isStateFlagEnabled(uint32_t stateBit) const { 6718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com return 0 != (stateBit & fFlagBits); 6728f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6738f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void copyStateFlags(const GrDrawState& ds) { 6758f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fFlagBits = ds.fFlagBits; 6768f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6778f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6788f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 6798f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6808f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 6818f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @name Face Culling 6828f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com //// 6838f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6848f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com enum DrawFace { 6858f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kBoth_DrawFace, 6868f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kCCW_DrawFace, 6878f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com kCW_DrawFace, 6888f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com }; 6898f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6908f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6918f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Controls whether clockwise, counterclockwise, or both faces are drawn. 6928f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @param face the face(s) to draw. 6938f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 6948f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com void setDrawFace(DrawFace face) { 6958f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com fDrawFace = face; 6968f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com } 6978f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 6988f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /** 6998f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * Gets whether the target is drawing clockwise, counterclockwise, 7008f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * or both faces. 7018f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com * @return the current draw face(s). 7028f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com */ 70352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com DrawFace getDrawFace() const { return fDrawFace; } 7048f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7058f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /// @} 7068f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 7078f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com /////////////////////////////////////////////////////////////////////////// 70862b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 70962b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // Most stages are usually not used, so conditionals here 71062b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // reduce the expected number of bytes touched by 50%. 7119381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com bool operator ==(const GrDrawState& s) const { 71262b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com if (memcmp(this, &s, this->leadingBytes())) return false; 71362b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 71462b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com for (int i = 0; i < kNumStages; i++) { 71562b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com if (fTextures[i] && 7163d0835b6ac0003c18147b6e9ca76a497b92d1d40bsalomon@google.com memcmp(&this->fSamplerStates[i], &s.fSamplerStates[i], 71762b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com sizeof(GrSamplerState))) { 71862b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com return false; 71962b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 72062b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 72162b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 72262b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com return true; 7239381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com } 7249381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com bool operator !=(const GrDrawState& s) const { return !(*this == s); } 72562b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 72662b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // Most stages are usually not used, so conditionals here 72762b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // reduce the expected number of bytes touched by 50%. 72862b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com GrDrawState& operator =(const GrDrawState& s) { 72962b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com memcpy(this, &s, this->leadingBytes()); 73062b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 73162b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com for (int i = 0; i < kNumStages; i++) { 73262b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com if (s.fTextures[i]) { 7333d0835b6ac0003c18147b6e9ca76a497b92d1d40bsalomon@google.com memcpy(&this->fSamplerStates[i], &s.fSamplerStates[i], 73462b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com sizeof(GrSamplerState)); 73562b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 73662b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 73762b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 73862b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com return *this; 73962b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 74062b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 74162b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.comprivate: 7428f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com static const StageMask kIllegalStageMaskBits = ~((1 << kNumStages)-1); 74352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // @{ these fields can be initialized with memset to 0 74452a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrColor fBlendConstant; 74552a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrTexture* fTextures[kNumStages]; 74652a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrColor fColorFilterColor; 74752a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com uint32_t fFlagBits; 74852a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com DrawFace fDrawFace; 74952a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com VertexEdgeType fVertexEdgeType; 75052a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrStencilSettings fStencilSettings; 75152a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com float fColorMatrix[20]; // 5 x 4 matrix 75252a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrRenderTarget* fRenderTarget; 75352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // @} 75452a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com 75552a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // @{ Initialized to values other than zero 75652a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrColor fColor; 75752a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com int fFirstCoverageStage; 75852a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com SkXfermode::Mode fColorFilterMode; 75952a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrBlendCoeff fSrcBlend; 76052a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrBlendCoeff fDstBlend; 76152a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrMatrix fViewMatrix; 76252a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com // @} 76352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com 7648f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // @{ Data for GrTesselatedPathRenderer 7658f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // TODO: currently ignored in copying & comparison for performance. 7668f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // Must be considered if GrTesselatedPathRenderer is being used. 76752a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com int fEdgeAANumEdges; 76852a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com Edge fEdgeAAEdges[kMaxEdges]; 7698f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // @} 77052a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com 7718f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // This field must be last; it will not be copied or compared 7728f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com // if the corresponding fTexture[] is NULL. 77352a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com GrSamplerState fSamplerStates[kNumStages]; 7748f9cbd62ec108d410b91155dcf6a4789c641246fbsalomon@google.com 77562b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com size_t leadingBytes() const { 77662b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // Can't use offsetof() with non-POD types, so stuck with pointer math. 77762b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // TODO: ignores GrTesselatedPathRenderer data structures. We don't 77862b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // have a compile-time flag that lets us know if it's being used, and 77962b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com // checking at runtime seems to cost 5% performance. 78062b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com return (size_t) ((unsigned char*)&fEdgeAANumEdges - 78152a5dcb43b5acbde377f664807b0f75af8bb1666bsalomon@google.com (unsigned char*)&fBlendConstant); 78262b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com } 78362b09687857c923b1044be0aef4dd900f8379b22tomhudson@google.com 7849381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com}; 7859381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com 7869381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#endif 787