GrDrawTarget.h revision 6e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59
1ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2010 Google Inc. 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 7ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 8ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 9ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 10ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 11ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com#ifndef GrDrawTarget_DEFINED 12ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com#define GrDrawTarget_DEFINED 13ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 148d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com#include "GrClipData.h" 159381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com#include "GrDrawState.h" 16934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com#include "GrIndexBuffer.h" 17b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com#include "SkMatrix.h" 18ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com#include "GrRefCnt.h" 19ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 208d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com#include "SkClipStack.h" 2112b4e27ae1a29460e91a59f38122483e1faec697sugoi@google.com#include "SkPath.h" 2246f7afb9867200b568c21736da8a8bbb56b20e30bsalomon@google.com#include "SkTLazy.h" 23a2d71482db8b6d752a51c96da74768d7dfc27932robertphillips@google.com#include "SkTArray.h" 248d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com#include "SkXfermode.h" 2597c88c255cff3dbb8343c5d090526fdbedad6dd6Scroggo 26a2d71482db8b6d752a51c96da74768d7dfc27932robertphillips@google.comclass GrClipData; 2764aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.comclass GrPath; 28ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.comclass GrVertexBuffer; 295f74cf8c49701f514b69dc6f1a8b5c0ffd78af0asugoi@google.comclass SkStrokeRec; 3012b4e27ae1a29460e91a59f38122483e1faec697sugoi@google.com 31ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.comclass GrDrawTarget : public GrRefCnt { 32f66018798099750e639a8fa131fece492a050997bsalomon@google.comprotected: 33f66018798099750e639a8fa131fece492a050997bsalomon@google.com /** This helper class allows GrDrawTarget subclasses to set the caps values without having to be 34f66018798099750e639a8fa131fece492a050997bsalomon@google.com made a friend of GrDrawTarget::Caps. */ 35f66018798099750e639a8fa131fece492a050997bsalomon@google.com class CapsInternals { 36f66018798099750e639a8fa131fece492a050997bsalomon@google.com public: 3718c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool f8BitPaletteSupport : 1; 3818c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool fNPOTTextureTileSupport : 1; 3918c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool fTwoSidedStencilSupport : 1; 4018c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool fStencilWrapOpsSupport : 1; 4118c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool fHWAALineSupport : 1; 4218c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool fShaderDerivativeSupport : 1; 43edfe1aac5c6f3a3f3830e86ddea8dbceeb0e6df4bsalomon@google.com bool fGeometryShaderSupport : 1; 4418c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool fFSAASupport : 1; 4518c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool fDualSourceBlendingSupport : 1; 4618c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com bool fBufferLockSupport : 1; 4764aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com bool fPathStencilingSupport : 1; 4818c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com int fMaxRenderTargetSize; 4918c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com int fMaxTextureSize; 5018c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com }; 5118c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com 52d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com class DrawInfo; 53d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 54f66018798099750e639a8fa131fece492a050997bsalomon@google.compublic: 55f66018798099750e639a8fa131fece492a050997bsalomon@google.com SK_DECLARE_INST_COUNT(GrDrawTarget) 56f66018798099750e639a8fa131fece492a050997bsalomon@google.com 57f66018798099750e639a8fa131fece492a050997bsalomon@google.com /** 58f66018798099750e639a8fa131fece492a050997bsalomon@google.com * Represents the draw target capabilities. 59f66018798099750e639a8fa131fece492a050997bsalomon@google.com */ 60f66018798099750e639a8fa131fece492a050997bsalomon@google.com class Caps { 61f66018798099750e639a8fa131fece492a050997bsalomon@google.com public: 62f66018798099750e639a8fa131fece492a050997bsalomon@google.com Caps() { memset(this, 0, sizeof(Caps)); } 63f66018798099750e639a8fa131fece492a050997bsalomon@google.com Caps(const Caps& c) { *this = c; } 64f66018798099750e639a8fa131fece492a050997bsalomon@google.com Caps& operator= (const Caps& c) { 65f66018798099750e639a8fa131fece492a050997bsalomon@google.com memcpy(this, &c, sizeof(Caps)); 66f66018798099750e639a8fa131fece492a050997bsalomon@google.com return *this; 67f66018798099750e639a8fa131fece492a050997bsalomon@google.com } 68f66018798099750e639a8fa131fece492a050997bsalomon@google.com void print() const; 69f66018798099750e639a8fa131fece492a050997bsalomon@google.com 70f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool eightBitPaletteSupport() const { return fInternals.f8BitPaletteSupport; } 71f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool npotTextureTileSupport() const { return fInternals.fNPOTTextureTileSupport; } 72f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool twoSidedStencilSupport() const { return fInternals.fTwoSidedStencilSupport; } 73f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool stencilWrapOpsSupport() const { return fInternals.fStencilWrapOpsSupport; } 74f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool hwAALineSupport() const { return fInternals.fHWAALineSupport; } 75f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool shaderDerivativeSupport() const { return fInternals.fShaderDerivativeSupport; } 76f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool geometryShaderSupport() const { return fInternals.fGeometryShaderSupport; } 77f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool fsaaSupport() const { return fInternals.fFSAASupport; } 78f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool dualSourceBlendingSupport() const { return fInternals.fDualSourceBlendingSupport; } 79f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool bufferLockSupport() const { return fInternals.fBufferLockSupport; } 80f66018798099750e639a8fa131fece492a050997bsalomon@google.com bool pathStencilingSupport() const { return fInternals.fPathStencilingSupport; } 81f66018798099750e639a8fa131fece492a050997bsalomon@google.com 82f66018798099750e639a8fa131fece492a050997bsalomon@google.com int maxRenderTargetSize() const { return fInternals.fMaxRenderTargetSize; } 83f66018798099750e639a8fa131fece492a050997bsalomon@google.com int maxTextureSize() const { return fInternals.fMaxTextureSize; } 84f66018798099750e639a8fa131fece492a050997bsalomon@google.com private: 85f66018798099750e639a8fa131fece492a050997bsalomon@google.com CapsInternals fInternals; 860d82fe5a4be4aef5b9ce7ca6f4864b72c73452a9bsalomon@google.com friend class GrDrawTarget; // to set values of fInternals 87f66018798099750e639a8fa131fece492a050997bsalomon@google.com }; 88f66018798099750e639a8fa131fece492a050997bsalomon@google.com 89ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /////////////////////////////////////////////////////////////////////////// 90ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 916e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com // The context may not be fully constructed and should not be used during GrDrawTarget 926e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com // construction. 936e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com GrDrawTarget(GrContext* context); 9425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com virtual ~GrDrawTarget(); 95ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 96ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 9718c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com * Gets the capabilities of the draw target. 9818c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com */ 9918c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com const Caps& getCaps() const { return fCaps; } 10018c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com 10118c9c198f571997463d9a7134dbd88298e592ec2bsalomon@google.com /** 102ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Sets the current clip to the region specified by clip. All draws will be 103ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * clipped against this clip if kClip_StateBit is enabled. 104ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 1055aaa69e4339e229adfb05e96084a8ec0a590238bbsalomon@google.com * Setting the clip may (or may not) zero out the client's stencil bits. 1065aaa69e4339e229adfb05e96084a8ec0a590238bbsalomon@google.com * 107ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param description of the clipping region 108ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 109beb1af78d016d2700c350487a383c6bcfa7e2e20robertphillips@google.com void setClip(const GrClipData* clip); 110ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 111ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 112ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Gets the current clip. 113ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 114ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @return the clip. 115ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 116beb1af78d016d2700c350487a383c6bcfa7e2e20robertphillips@google.com const GrClipData* getClip() const; 117ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 118a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com /** 119a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com * Sets the draw state object for the draw target. Note that this does not 120a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com * make a copy. The GrDrawTarget will take a reference to passed object. 121a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com * Passing NULL will cause the GrDrawTarget to use its own internal draw 122a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com * state object rather than an externally provided one. 123a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com */ 124a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com void setDrawState(GrDrawState* drawState); 125a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com 126a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com /** 127a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com * Read-only access to the GrDrawTarget's current draw state. 128a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com */ 129a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com const GrDrawState& getDrawState() const { return *fDrawState; } 130a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com 131a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com /** 132a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com * Read-write access to the GrDrawTarget's current draw state. Note that 133a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com * this doesn't ref. 134a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com */ 135a5d056ae0b04021dfb44c2c7a3d6a34e060261b8bsalomon@google.com GrDrawState* drawState() { return fDrawState; } 1363d0835b6ac0003c18147b6e9ca76a497b92d1d40bsalomon@google.com 1373d0835b6ac0003c18147b6e9ca76a497b92d1d40bsalomon@google.com /** 138a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com * Color alpha and coverage are two inputs to the drawing pipeline. For some 139a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com * blend modes it is safe to fold the coverage into constant or per-vertex 140a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com * color alpha value. For other blend modes they must be handled separately. 141a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com * Depending on features available in the underlying 3D API this may or may 142a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com * not be possible. 143a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com * 144e79c815bca39fa552983b7a8107219aa5084acdbbsalomon@google.com * This function considers the current draw state and the draw target's 145e79c815bca39fa552983b7a8107219aa5084acdbbsalomon@google.com * capabilities to determine whether coverage can be handled correctly. The 146e79c815bca39fa552983b7a8107219aa5084acdbbsalomon@google.com * following assumptions are made: 147e79c815bca39fa552983b7a8107219aa5084acdbbsalomon@google.com * 1. The caller intends to somehow specify coverage. This can be 148e79c815bca39fa552983b7a8107219aa5084acdbbsalomon@google.com * specified either by enabling a coverage stage on the GrDrawState or 149e79c815bca39fa552983b7a8107219aa5084acdbbsalomon@google.com * via the vertex layout. 1502b446734cfa8201e5478648988de86b646cb9544bsalomon@google.com * 2. Other than enabling coverage stages or enabling coverage in the 1512b446734cfa8201e5478648988de86b646cb9544bsalomon@google.com * layout, the current configuration of the target's GrDrawState is as 1522b446734cfa8201e5478648988de86b646cb9544bsalomon@google.com * it will be at draw time. 153a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com */ 154a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com bool canApplyCoverage() const; 155a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com 156a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com /** 1572b446734cfa8201e5478648988de86b646cb9544bsalomon@google.com * Given the current draw state and hw support, will HW AA lines be used (if 1582b446734cfa8201e5478648988de86b646cb9544bsalomon@google.com * a line primitive type is drawn)? 159a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com */ 1609381363050ec9d3e724076a8e9152bfa9a8de1d1tomhudson@google.com bool willUseHWAALines() const; 161a31082685544d0ae4c0b203d7f5ff960640ed8dfbsalomon@google.com 1623d0835b6ac0003c18147b6e9ca76a497b92d1d40bsalomon@google.com /** 163e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * There are three types of "sources" of geometry (vertices and indices) for 164e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * draw calls made on the target. When performing an indexed draw, the 165e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * indices and vertices can use different source types. Once a source is 166934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * specified it can be used for multiple draws. However, the time at which 167934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * the geometry data is no longer editable depends on the source type. 16825fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * 16925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * Sometimes it is necessary to perform a draw while upstack code has 170e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * already specified geometry that it isn't finished with. So there are push 171e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * and pop methods. This allows the client to push the sources, draw 172e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * something using alternate sources, and then pop to restore the original 173e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * sources. 174e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * 175e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * Aside from pushes and pops, a source remains valid until another source 176e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * is set or resetVertexSource / resetIndexSource is called. Drawing from 177e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * a reset source is an error. 178e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * 179e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * The three types of sources are: 1801c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * 181e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * 1. A cpu array (set*SourceToArray). This is useful when the caller 182e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * already provided vertex data in a format compatible with a 183e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * GrVertexLayout. The data in the array is consumed at the time that 184e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * set*SourceToArray is called and subsequent edits to the array will not 185e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * be reflected in draws. 1861c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * 18725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * 2. Reserve. This is most useful when the caller has data it must 18825fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * transform before drawing and is not long-lived. The caller requests 18925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * that the draw target make room for some amount of vertex and/or index 19025fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * data. The target provides ptrs to hold the vertex and/or index data. 19125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * 192d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * The data is writable up until the next drawIndexed, drawNonIndexed, 193934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * drawIndexedInstances, or pushGeometrySource. At this point the data is 194934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * frozen and the ptrs are no longer valid. 1951c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * 196e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * Where the space is allocated and how it is uploaded to the GPU is 197e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * subclass-dependent. 198e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * 1991c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * 3. Vertex and Index Buffers. This is most useful for geometry that will 200e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * is long-lived. When the data in the buffer is consumed depends on the 201d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * GrDrawTarget subclass. For deferred subclasses the caller has to 202e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * guarantee that the data is still available in the buffers at playback. 203e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * (TODO: Make this more automatic as we have done for read/write pixels) 204b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * 205b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * The size of each vertex is determined by querying the current GrDrawState. 2061c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com */ 2071c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com 2081c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com /** 209e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * Reserves space for vertices and/or indices. Zero can be specifed as 210e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * either the vertex or index count if the caller desires to only reserve 211d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * space for only indices or only vertices. If zero is specifed for 212e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * vertexCount then the vertex source will be unmodified and likewise for 213e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * indexCount. 214ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 215e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * If the function returns true then the reserve suceeded and the vertices 216e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * and indices pointers will point to the space created. 217ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 218e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * If the target cannot make space for the request then this function will 219e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * return false. If vertexCount was non-zero then upon failure the vertex 220e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * source is reset and likewise for indexCount. 221ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 222e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * The pointers to the space allocated for vertices and indices remain valid 223934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * until a drawIndexed, drawNonIndexed, drawIndexedInstances, or push/ 224934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * popGeomtrySource is called. At that point logically a snapshot of the 225934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * data is made and the pointers are invalid. 2261c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * 227e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * @param vertexCount the number of vertices to reserve space for. Can be 228b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * 0. Vertex size is queried from the current GrDrawState. 22925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * @param indexCount the number of indices to reserve space for. Can be 0. 230e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com * @param vertices will point to reserved vertex space if vertexCount is 231d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * non-zero. Illegal to pass NULL if vertexCount > 0. 23225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * @param indices will point to reserved index space if indexCount is 23325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * non-zero. Illegal to pass NULL if indexCount > 0. 23425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com */ 235b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com bool reserveVertexAndIndexSpace(int vertexCount, 23697805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com int indexCount, 23797805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com void** vertices, 23897805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com void** indices); 23925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com 240ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 241ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Provides hints to caller about the number of vertices and indices 242ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * that can be allocated cheaply. This can be useful if caller is reserving 243ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * space but doesn't know exactly how much geometry is needed. 244ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 245ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Also may hint whether the draw target should be flushed first. This is 246ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * useful for deferred targets. 247ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 248ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param vertexCount in: hint about how many vertices the caller would 249b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * like to allocate. Vertex size is queried from the 250b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * current GrDrawState. 251ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * out: a hint about the number of vertices that can be 252ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * allocated cheaply. Negative means no hint. 253ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Ignored if NULL. 254ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param indexCount in: hint about how many indices the caller would 255ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * like to allocate. 256ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * out: a hint about the number of indices that can be 257ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * allocated cheaply. Negative means no hint. 258ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Ignored if NULL. 259ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 260ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @return true if target should be flushed based on the input values. 261ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 262b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com virtual bool geometryHints(int* vertexCount, 2631c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com int* indexCount) const; 264ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 265ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 2661c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * Sets source of vertex data for the next draw. Array must contain 2671c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * the vertex data when this is called. 268ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 269b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * @param vertexArray cpu array containing vertex data. 270ae683921ffda9108147a29da7319c7eee4dc9245skia.committer@gmail.com * @param vertexCount the number of vertices in the array. Vertex size is 271b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * queried from the current GrDrawState. 272ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 273b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com void setVertexSourceToArray(const void* vertexArray, int vertexCount); 274ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 275ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 2761c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * Sets source of index data for the next indexed draw. Array must contain 2771c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * the indices when this is called. 278ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 279b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * @param indexArray cpu array containing index data. 2801c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com * @param indexCount the number of indices in the array. 281ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 2821c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com void setIndexSourceToArray(const void* indexArray, int indexCount); 283ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 284ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 285ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Sets source of vertex data for the next draw. Data does not have to be 286934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * in the buffer until drawIndexed, drawNonIndexed, or drawIndexedInstances. 287ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 288ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param buffer vertex buffer containing vertex data. Must be 289ae683921ffda9108147a29da7319c7eee4dc9245skia.committer@gmail.com * unlocked before draw call. Vertex size is queried 290b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com * from current GrDrawState. 291ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 292b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com void setVertexSourceToBuffer(const GrVertexBuffer* buffer); 293ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 294ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 295ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Sets source of index data for the next indexed draw. Data does not have 296934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * to be in the buffer until drawIndexed. 297ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 298ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param buffer index buffer containing indices. Must be unlocked 299ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * before indexed draw call. 300ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 301ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com void setIndexSourceToBuffer(const GrIndexBuffer* buffer); 302d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 30325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com /** 30425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * Resets vertex source. Drawing from reset vertices is illegal. Set vertex 30525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * source to reserved, array, or buffer before next draw. May be able to free 30625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * up temporary storage allocated by setVertexSourceToArray or 30725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * reserveVertexSpace. 30825fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com */ 30925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com void resetVertexSource(); 310d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 31125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com /** 31225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * Resets index source. Indexed Drawing from reset indices is illegal. Set 31325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * index source to reserved, array, or buffer before next indexed draw. May 31425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * be able to free up temporary storage allocated by setIndexSourceToArray 31525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * or reserveIndexSpace. 31625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com */ 31797805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com void resetIndexSource(); 318d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 31997805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com /** 32097805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com * Query to find out if the vertex or index source is reserved. 32197805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com */ 32297805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com bool hasReservedVerticesOrIndices() const { 32373d98aace4f74acc39d8de33484c8aec8e917739bsalomon@google.com return kReserved_GeometrySrcType == this->getGeomSrc().fVertexSrc || 32497805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com kReserved_GeometrySrcType == this->getGeomSrc().fIndexSrc; 32597805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com } 326ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 327ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 32825fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * Pushes and resets the vertex/index sources. Any reserved vertex / index 32925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * data is finalized (i.e. cannot be updated after the matching pop but can 33025fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * be drawn from). Must be balanced by a pop. 33125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com */ 33225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com void pushGeometrySource(); 33325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com 33425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com /** 33525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com * Pops the vertex / index sources from the matching push. 33625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com */ 33725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com void popGeometrySource(); 33864aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com 33925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com /** 340ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Draws indexed geometry using the current state and current vertex / index 341ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * sources. 342ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 343ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param type The type of primitives to draw. 344ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param startVertex the vertex in the vertex array/buffer corresponding 345ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * to index 0 346ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param startIndex first index to read from index src. 347ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param vertexCount one greater than the max index. 348ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param indexCount the number of index elements to read. The index count 349ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * is effectively trimmed to the last completely 350ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * specified primitive. 351d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * @param devBounds optional bounds hint. This is a promise from the caller, 352d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * not a request for clipping. 353ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 35425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com void drawIndexed(GrPrimitiveType type, 35525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int startVertex, 35625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int startIndex, 35725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int vertexCount, 358d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int indexCount, 359d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com const SkRect* devBounds = NULL); 360ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 361ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com /** 362ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * Draws non-indexed geometry using the current state and current vertex 363ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * sources. 364ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * 365ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param type The type of primitives to draw. 366ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param startVertex the vertex in the vertex array/buffer corresponding 367ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * to index 0 368ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com * @param vertexCount one greater than the max index. 369d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * @param devBounds optional bounds hint. This is a promise from the caller, 370d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * not a request for clipping. 371ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com */ 37225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com void drawNonIndexed(GrPrimitiveType type, 37325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int startVertex, 374d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int vertexCount, 375d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com const SkRect* devBounds = NULL); 376ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 37786afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com /** 37864aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com * Draws path into the stencil buffer. The fill must be either even/odd or 37964aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com * winding (not inverse or hairline). It will respect the HW antialias flag 38064aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com * on the draw state (if possible in the 3D API). 38164aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com */ 3825f74cf8c49701f514b69dc6f1a8b5c0ffd78af0asugoi@google.com void stencilPath(const GrPath*, const SkStrokeRec& stroke, SkPath::FillType fill); 38364aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com 38464aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com /** 38586afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com * Helper function for drawing rects. This does not use the current index 38686afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com * and vertex sources. After returning, the vertex and index sources may 38786afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com * have changed. They should be reestablished before the next drawIndexed 38886afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com * or drawNonIndexed. This cannot be called between reserving and releasing 389d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * geometry. 390044679ef8c08e1f01afadf5bc08251fe8597df81skia.committer@gmail.com * 391d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * A subclass may override this to perform more optimal rect rendering. Its 392d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * draws should be funneled through one of the public GrDrawTarget draw methods 393d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * (e.g. drawNonIndexed, drawIndexedInstances, ...). The base class draws a two 394d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * triangle fan using drawNonIndexed from reserved vertex space. 395044679ef8c08e1f01afadf5bc08251fe8597df81skia.committer@gmail.com * 39686afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com * @param rect the rect to draw 39786afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com * @param matrix optional matrix applied to rect (before viewMatrix) 3983976825a21532e254311b90b4a9046e25717e335jvanverth@google.com * @param srcRects specifies rect for explicit texture coordinates. 3993976825a21532e254311b90b4a9046e25717e335jvanverth@google.com * if srcRect is non-NULL then that rect will be used 4003976825a21532e254311b90b4a9046e25717e335jvanverth@google.com * as the coordinates for the given stage. 4013976825a21532e254311b90b4a9046e25717e335jvanverth@google.com * @param srcMatrix optional matrix applied to srcRect. If 402044679ef8c08e1f01afadf5bc08251fe8597df81skia.committer@gmail.com * srcRect is non-NULL and srcMatrix is non-NULL 403044679ef8c08e1f01afadf5bc08251fe8597df81skia.committer@gmail.com * then srcRect will be transformed by srcMatrix. 4043976825a21532e254311b90b4a9046e25717e335jvanverth@google.com * srcMatrix can be NULL when no srcMatrix is desired. 405044679ef8c08e1f01afadf5bc08251fe8597df81skia.committer@gmail.com * @param stage the stage to be given explicit texture coordinates. 4063976825a21532e254311b90b4a9046e25717e335jvanverth@google.com * Ignored if srcRect is NULL. 40786afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com */ 408d302f1401b3c9aea094804bad4e76de98782cfe8bsalomon@google.com virtual void drawRect(const GrRect& rect, 409b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com const SkMatrix* matrix, 4103976825a21532e254311b90b4a9046e25717e335jvanverth@google.com const GrRect* srcRect, 4113976825a21532e254311b90b4a9046e25717e335jvanverth@google.com const SkMatrix* srcMatrix, 4123976825a21532e254311b90b4a9046e25717e335jvanverth@google.com int stage); 4133976825a21532e254311b90b4a9046e25717e335jvanverth@google.com 414cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com /** 415cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * Helper for drawRect when the caller doesn't need separate src rects or 416cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com * matrices. 417cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com */ 418cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com void drawSimpleRect(const GrRect& rect, const SkMatrix* matrix = NULL) { 4193976825a21532e254311b90b4a9046e25717e335jvanverth@google.com drawRect(rect, matrix, NULL, NULL, 0); 420cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com } 421cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com void drawSimpleRect(const GrIRect& irect, const SkMatrix* matrix = NULL) { 422cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com SkRect rect = SkRect::MakeFromIRect(irect); 4233976825a21532e254311b90b4a9046e25717e335jvanverth@google.com this->drawRect(rect, matrix, NULL, NULL, 0); 424cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com } 42586afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com 42686afc2ae27fec84c01eb0e81a32766bdaf67dca8bsalomon@google.com /** 427934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * This call is used to draw multiple instances of some geometry with a 428934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * given number of vertices (V) and indices (I) per-instance. The indices in 429934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * the index source must have the form i[k+I] == i[k] + V. Also, all indices 430934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * i[kI] ... i[(k+1)I-1] must be elements of the range kV ... (k+1)V-1. As a 431934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * concrete example, the following index buffer for drawing a series of 432934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * quads each as two triangles each satisfies these conditions with V=4 and 433934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * I=6: 434934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * (0,1,2,0,2,3, 4,5,6,4,6,7, 8,9,10,8,10,11, ...) 435934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * 436934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * The call assumes that the pattern of indices fills the entire index 437934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * source. The size of the index buffer limits the number of instances that 438934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * can be drawn by the GPU in a single draw. However, the caller may specify 439934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * any (positive) number for instanceCount and if necessary multiple GPU 440d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * draws will be issued. Moreover, when drawIndexedInstances is called 441934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * multiple times it may be possible for GrDrawTarget to group them into a 442934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * single GPU draw. 443934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * 444934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * @param type the type of primitives to draw 445934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * @param instanceCount the number of instances to draw. Each instance 446934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * consists of verticesPerInstance vertices indexed by 447934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * indicesPerInstance indices drawn as the primitive 448934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * type specified by type. 449934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * @param verticesPerInstance The number of vertices in each instance (V 450934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * in the above description). 451934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * @param indicesPerInstance The number of indices in each instance (I 452934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com * in the above description). 453d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * @param devBounds optional bounds hint. This is a promise from the caller, 454d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * not a request for clipping. 455934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com */ 456d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com void drawIndexedInstances(GrPrimitiveType type, 457d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int instanceCount, 458d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int verticesPerInstance, 459d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int indicesPerInstance, 460d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com const SkRect* devBounds = NULL); 461934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com 462934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com /** 463d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * Clear the current render target if one isn't passed in. Ignores the 464d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * clip and all other draw state (blend mode, stages, etc). Clears the 465c82a8b7aa4ec19fba508c394920a9e88d3e5bd12robertphillips@google.com * whole thing if rect is NULL, otherwise just the rect. 4660b335c1ac100aeacf79a4c98a052286fd46661e7bsalomon@google.com */ 467d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com virtual void clear(const GrIRect* rect, 468c82a8b7aa4ec19fba508c394920a9e88d3e5bd12robertphillips@google.com GrColor color, 469c82a8b7aa4ec19fba508c394920a9e88d3e5bd12robertphillips@google.com GrRenderTarget* renderTarget = NULL) = 0; 4700b335c1ac100aeacf79a4c98a052286fd46661e7bsalomon@google.com 471ff17584e1c15f68ccc296be517e8a6776a9ddabdrobertphillips@google.com /** 472ff17584e1c15f68ccc296be517e8a6776a9ddabdrobertphillips@google.com * Release any resources that are cached but not currently in use. This 473ff17584e1c15f68ccc296be517e8a6776a9ddabdrobertphillips@google.com * is intended to give an application some recourse when resources are low. 474ff17584e1c15f68ccc296be517e8a6776a9ddabdrobertphillips@google.com */ 475ff17584e1c15f68ccc296be517e8a6776a9ddabdrobertphillips@google.com virtual void purgeResources() {}; 476ff17584e1c15f68ccc296be517e8a6776a9ddabdrobertphillips@google.com 477d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com /** 478d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * For subclass internal use to invoke a call to onDraw(). See DrawInfo below. 479d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com */ 480d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com void executeDraw(const DrawInfo& info) { this->onDraw(info); } 481d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 48225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com //////////////////////////////////////////////////////////////////////////// 483ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 484873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com /** 485873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * See AutoStateRestore below. 486873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com */ 487873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com enum ASRInit { 488873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com kPreserve_ASRInit, 489873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com kReset_ASRInit 490873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com }; 491873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com 492873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com /** 493873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * Saves off the current state and restores it in the destructor. It will 494873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * install a new GrDrawState object on the target (setDrawState) and restore 495873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * the previous one in the destructor. The caller should call drawState() to 496873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * get the new draw state after the ASR is installed. 497873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * 498873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * GrDrawState* state = target->drawState(); 499873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * AutoStateRestore asr(target, GrDrawTarget::kReset_ASRInit). 500873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * state->setRenderTarget(rt); // state refers to the GrDrawState set on 501873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * // target before asr was initialized. 502873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * // Therefore, rt is set on the GrDrawState 503873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * // that will be restored after asr's 504873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * // destructor rather than target's current 505d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com * // GrDrawState. 506873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com */ 507ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com class AutoStateRestore : ::GrNoncopyable { 508ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com public: 509873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com /** 510873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * Default ASR will have no effect unless set() is subsequently called. 511873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com */ 51206afe7b5a1ef03bfc6494c51ab2a1f7a386de5c2bsalomon@google.com AutoStateRestore(); 513873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com 514873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com /** 515873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * Saves the state on target. The state will be restored when the ASR 516873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * is destroyed. If this constructor is used do not call set(). 517873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * 518873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * @param init Should the newly installed GrDrawState be a copy of the 519873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * previous state or a default-initialized GrDrawState. 520873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com */ 521873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com AutoStateRestore(GrDrawTarget* target, ASRInit init); 522873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com 523ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com ~AutoStateRestore(); 524ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 52506afe7b5a1ef03bfc6494c51ab2a1f7a386de5c2bsalomon@google.com /** 526873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * Saves the state on target. The state will be restored when the ASR 527873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * is destroyed. This should only be called once per ASR object and only 528873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * when the default constructor was used. For nested saves use multiple 529873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * ASR objects. 530873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * 531873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * @param init Should the newly installed GrDrawState be a copy of the 532873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com * previous state or a default-initialized GrDrawState. 53306afe7b5a1ef03bfc6494c51ab2a1f7a386de5c2bsalomon@google.com */ 534873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com void set(GrDrawTarget* target, ASRInit init); 53506afe7b5a1ef03bfc6494c51ab2a1f7a386de5c2bsalomon@google.com 536ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com private: 537873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com GrDrawTarget* fDrawTarget; 538873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com SkTLazy<GrDrawState> fTempState; 539873ea0c93f202600ec2591bc1e2e5d7a1e05f59dbsalomon@google.com GrDrawState* fSavedState; 540ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com }; 541ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 54225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com //////////////////////////////////////////////////////////////////////////// 5431c13c9668a889e56a0c85b51b9f28139c25b76ffbsalomon@google.com 544ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com class AutoReleaseGeometry : ::GrNoncopyable { 545ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com public: 546ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com AutoReleaseGeometry(GrDrawTarget* target, 54725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int vertexCount, 54825fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int indexCount); 54925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com AutoReleaseGeometry(); 55025fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com ~AutoReleaseGeometry(); 5515782d712ffc31557d0cb12d5a220cebb783f6895bsalomon@google.com bool set(GrDrawTarget* target, 55225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int vertexCount, 55325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int indexCount); 554a47a48dca5045d71cbc5de343404045209a13e15bsalomon@google.com bool succeeded() const { return NULL != fTarget; } 5556513cd06ae34f5d777b3aaea0b4533014d0a10f2bsalomon@google.com void* vertices() const { GrAssert(this->succeeded()); return fVertices; } 5566513cd06ae34f5d777b3aaea0b4533014d0a10f2bsalomon@google.com void* indices() const { GrAssert(this->succeeded()); return fIndices; } 557ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com GrPoint* positions() const { 5586513cd06ae34f5d777b3aaea0b4533014d0a10f2bsalomon@google.com return static_cast<GrPoint*>(this->vertices()); 559ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com } 560ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 561ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com private: 56225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com void reset(); 563d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 564ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com GrDrawTarget* fTarget; 565ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com void* fVertices; 566ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com void* fIndices; 567ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com }; 568ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 56925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com //////////////////////////////////////////////////////////////////////////// 570ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 571ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com class AutoClipRestore : ::GrNoncopyable { 572ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com public: 573ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com AutoClipRestore(GrDrawTarget* target) { 574ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com fTarget = target; 575ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com fClip = fTarget->getClip(); 576ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com } 577ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 5788d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com AutoClipRestore(GrDrawTarget* target, const SkIRect& newClip); 5798d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com 580ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com ~AutoClipRestore() { 581ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com fTarget->setClip(fClip); 582ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com } 583ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com private: 5848d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com GrDrawTarget* fTarget; 5858d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com const GrClipData* fClip; 5868d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com SkTLazy<SkClipStack> fStack; 5878d67c0711b52226db59158a0cfce09f35badd96absalomon@google.com GrClipData fReplacementClip; 588ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com }; 589d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 59025fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com //////////////////////////////////////////////////////////////////////////// 591d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 592b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com class AutoGeometryAndStatePush : ::GrNoncopyable { 59325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com public: 594ae683921ffda9108147a29da7319c7eee4dc9245skia.committer@gmail.com AutoGeometryAndStatePush(GrDrawTarget* target, ASRInit init) 595b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com : fState(target, init) { 59625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com GrAssert(NULL != target); 59725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com fTarget = target; 59825fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com target->pushGeometrySource(); 59925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com } 600b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com ~AutoGeometryAndStatePush() { 60125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com fTarget->popGeometrySource(); 60225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com } 60325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com private: 604b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com GrDrawTarget* fTarget; 605b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com AutoStateRestore fState; 60625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com }; 607ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 608ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.comprotected: 609471d471dcd7422e5dd9c822c1092b2ba4721dcfebsalomon@google.com 61025fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com enum GeometrySrcType { 61125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com kNone_GeometrySrcType, //<! src has not been specified 61225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com kReserved_GeometrySrcType, //<! src was set using reserve*Space 61325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com kArray_GeometrySrcType, //<! src was set using set*SourceToArray 61425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com kBuffer_GeometrySrcType //<! src was set using set*SourceToBuffer 61525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com }; 616d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 61725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com struct GeometrySrcState { 61825fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com GeometrySrcType fVertexSrc; 61925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com union { 62025fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // valid if src type is buffer 62125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com const GrVertexBuffer* fVertexBuffer; 62225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // valid if src type is reserved or array 62325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int fVertexCount; 62425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com }; 625d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 62625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com GeometrySrcType fIndexSrc; 62725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com union { 62825fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // valid if src type is buffer 62925fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com const GrIndexBuffer* fIndexBuffer; 63025fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // valid if src type is reserved or array 63125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com int fIndexCount; 63225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com }; 633d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 634b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com size_t fVertexSize; 63525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com }; 636934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com 637934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com int indexCountInCurrentSource() const { 638934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com const GeometrySrcState& src = this->getGeomSrc(); 639934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com switch (src.fIndexSrc) { 640934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com case kNone_GeometrySrcType: 641934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com return 0; 642934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com case kReserved_GeometrySrcType: 643934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com case kArray_GeometrySrcType: 644934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com return src.fIndexCount; 645934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com case kBuffer_GeometrySrcType: 646934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com return src.fIndexBuffer->sizeInBytes() / sizeof(uint16_t); 647934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com default: 648934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com GrCrash("Unexpected Index Source."); 649934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com return 0; 650934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com } 651934c570297c1b1f99cb4ca8d012d468a7eddf73fbsalomon@google.com } 652a47a48dca5045d71cbc5de343404045209a13e15bsalomon@google.com 6536e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com GrContext* getContext() { return fContext; } 6546e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com const GrContext* getContext() const { return fContext; } 6556e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com 65602ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // allows derived class to set the caps 65702ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com CapsInternals* capsInternals() { return &fCaps.fInternals; } 65802ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com 65902ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // A subclass may override this function if it wishes to be notified when the clip is changed. 66002ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // The override should call INHERITED::clipWillBeSet(). 66102ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com virtual void clipWillBeSet(const GrClipData* clipData); 66202ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com 66302ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // subclasses must call this in their destructors to ensure all vertex 66402ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // and index sources have been released (including those held by 66502ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // pushGeometrySource()) 66602ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com void releaseGeometry(); 66702ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com 66802ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // accessors for derived classes 66902ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com const GeometrySrcState& getGeomSrc() const { return fGeoSrcStateStack.back(); } 670b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com // it is preferable to call this rather than getGeomSrc()->fVertexSize because of the assert. 671b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com size_t getVertexSize() const { 67202ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // the vertex layout is only valid if a vertex source has been specified. 67302ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com GrAssert(this->getGeomSrc().fVertexSrc != kNone_GeometrySrcType); 674b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com return this->getGeomSrc().fVertexSize; 675a47a48dca5045d71cbc5de343404045209a13e15bsalomon@google.com } 6765782d712ffc31557d0cb12d5a220cebb783f6895bsalomon@google.com 67702ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com Caps fCaps; 67802ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com 679d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com /** 680d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com * Used to communicate draws to subclass's onDraw function. 681d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com */ 68274749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com class DrawInfo { 68374749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com public: 68474749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com DrawInfo(const DrawInfo& di) { (*this) = di; } 685d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com DrawInfo& operator =(const DrawInfo& di); 68674749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com 68774749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com GrPrimitiveType primitiveType() const { return fPrimitiveType; } 68874749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com int startVertex() const { return fStartVertex; } 68974749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com int startIndex() const { return fStartIndex; } 69074749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com int vertexCount() const { return fVertexCount; } 69174749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com int indexCount() const { return fIndexCount; } 692d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int verticesPerInstance() const { return fVerticesPerInstance; } 693d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int indicesPerInstance() const { return fIndicesPerInstance; } 694d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int instanceCount() const { return fInstanceCount; } 69574749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com 69674749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com bool isIndexed() const { return fIndexCount > 0; } 697d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com#if GR_DEBUG 698d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com bool isInstanced() const; // this version is longer because of asserts 699d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com#else 700d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com bool isInstanced() const { return fInstanceCount > 0; } 701d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com#endif 702d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 703d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com // adds or remove instances 704d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com void adjustInstanceCount(int instanceOffset); 705d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com // shifts the start vertex 706d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com void adjustStartVertex(int vertexOffset); 707d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com // shifts the start index 708d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com void adjustStartIndex(int indexOffset); 709d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 710d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com void setDevBounds(const SkRect& bounds) { 711d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com fDevBoundsStorage = bounds; 712d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com fDevBounds = &fDevBoundsStorage; 713d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com } 714d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com const SkRect* getDevBounds() const { return fDevBounds; } 71574749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com 71674749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com private: 717d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com DrawInfo() { fDevBounds = NULL; } 718d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 71974749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com friend class GrDrawTarget; 720d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 72174749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com GrPrimitiveType fPrimitiveType; 72274749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com 72374749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com int fStartVertex; 72474749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com int fStartIndex; 72574749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com int fVertexCount; 72674749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com int fIndexCount; 727d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 728d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int fInstanceCount; 729d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int fVerticesPerInstance; 730d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com int fIndicesPerInstance; 731d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com 732d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com SkRect fDevBoundsStorage; 733d62e88e5af39347a8fc2a5abdf5feb67d7ea256dbsalomon@google.com SkRect* fDevBounds; 73474749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com }; 73574749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com 73602ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.comprivate: 73702ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // A subclass can optionally overload this function to be notified before 73802ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // vertex and index space is reserved. 739b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com virtual void willReserveVertexAndIndexSpace(int vertexCount, int indexCount) {} 74097805382d89b717de3355312a79a957ea4a864c9bsalomon@google.com 74125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // implemented by subclass to allocate space for reserved geom 742a63389843dd18003382d61c2e4610af09ed07d38jvanverth@google.com virtual bool onReserveVertexSpace(size_t vertexSize, int vertexCount, void** vertices) = 0; 74325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com virtual bool onReserveIndexSpace(int indexCount, void** indices) = 0; 74425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // implemented by subclass to handle release of reserved geom space 74525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com virtual void releaseReservedVertexSpace() = 0; 74625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com virtual void releaseReservedIndexSpace() = 0; 74725fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // subclass must consume array contents when set 74802ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com virtual void onSetVertexSourceToArray(const void* vertexArray, int vertexCount) = 0; 74902ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com virtual void onSetIndexSourceToArray(const void* indexArray, int indexCount) = 0; 75025fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // subclass is notified that geom source will be set away from an array 75125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com virtual void releaseVertexArray() = 0; 75225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com virtual void releaseIndexArray() = 0; 75302ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com // subclass overrides to be notified just before geo src state is pushed/popped. 75425fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com virtual void geometrySourceWillPush() = 0; 75525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com virtual void geometrySourceWillPop(const GeometrySrcState& restoredState) = 0; 75625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // subclass called to perform drawing 75774749cd45c29b4f5300e2518f2c2c765ce8ae208bsalomon@google.com virtual void onDraw(const DrawInfo&) = 0; 7585f74cf8c49701f514b69dc6f1a8b5c0ffd78af0asugoi@google.com virtual void onStencilPath(const GrPath*, const SkStrokeRec& stroke, SkPath::FillType fill) = 0; 75964aef2bacd1f5c25ffd9347aabd6265c9b60c0f4bsalomon@google.com 760e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com // helpers for reserving vertex and index space. 761b75b0a0b8492e14c7728e0a0881f87dc64ce60f9jvanverth@google.com bool reserveVertexSpace(size_t vertexSize, 762e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com int vertexCount, 763e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com void** vertices); 764e3d7095c2374a423815e662020459832f389a40fbsalomon@google.com bool reserveIndexSpace(int indexCount, void** indices); 765d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 766e826262939dac3e67cb5ce66d4b9faeb8e2538e6bsalomon@google.com // called by drawIndexed and drawNonIndexed. Use a negative indexCount to 767e826262939dac3e67cb5ce66d4b9faeb8e2538e6bsalomon@google.com // indicate non-indexed drawing. 768e826262939dac3e67cb5ce66d4b9faeb8e2538e6bsalomon@google.com bool checkDraw(GrPrimitiveType type, int startVertex, 769e826262939dac3e67cb5ce66d4b9faeb8e2538e6bsalomon@google.com int startIndex, int vertexCount, 770e826262939dac3e67cb5ce66d4b9faeb8e2538e6bsalomon@google.com int indexCount) const; 77125fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com // called when setting a new vert/idx source to unref prev vb/ib 77225fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com void releasePreviousVertexSource(); 77325fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com void releasePreviousIndexSource(); 774d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com 77525fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com enum { 77625fb21f5df904c6f111bbf8f07e6a6c339416d09bsalomon@google.com kPreallocGeoSrcStateStackCnt = 4, 777ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com }; 77802ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com SkSTArray<kPreallocGeoSrcStateStackCnt, GeometrySrcState, true> fGeoSrcStateStack; 77902ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com const GrClipData* fClip; 78002ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com GrDrawState* fDrawState; 78102ddc8b85ace91b15feb329a6a1d5d62b2b846c6bsalomon@google.com GrDrawState fDefaultDrawState; 7826e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com // The context owns us, not vice-versa, so this ptr is not ref'ed by DrawTarget. 7836e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com GrContext* fContext; 784fa35e3ddcc9d130ce87c927218bdf27879c38711reed@google.com 785fa35e3ddcc9d130ce87c927218bdf27879c38711reed@google.com typedef GrRefCnt INHERITED; 786ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com}; 787ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com 788ac10a2d039c5d52eed66e27cbbc503ab523c1cd5reed@google.com#endif 789