| |
| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| |
| #include "GrDrawTarget.h" |
| #include "GrGpuVertex.h" |
| #include "GrIndexBuffer.h" |
| #include "GrRenderTarget.h" |
| #include "GrTexture.h" |
| #include "GrVertexBuffer.h" |
| |
| namespace { |
| |
| /** |
| * This function generates some masks that we like to have known at compile |
| * time. When the number of stages or tex coords is bumped or the way bits |
| * are defined in GrDrawTarget.h changes this funcion should be rerun to |
| * generate the new masks. (We attempted to force the compiler to generate the |
| * masks using recursive templates but always wound up with static initializers |
| * under gcc, even if they were just a series of immediate->memory moves.) |
| * |
| */ |
| void gen_mask_arrays(GrVertexLayout* stageTexCoordMasks, |
| GrVertexLayout* stageMasks, |
| GrVertexLayout* texCoordMasks) { |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| stageTexCoordMasks[s] = 0; |
| for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { |
| stageTexCoordMasks[s] |= GrDrawTarget::StageTexCoordVertexLayoutBit(s, t); |
| } |
| stageMasks[s] = stageTexCoordMasks[s] | GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(s); |
| } |
| for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { |
| texCoordMasks[t] = 0; |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| texCoordMasks[t] |= GrDrawTarget::StageTexCoordVertexLayoutBit(s, t); |
| } |
| } |
| } |
| |
| /** |
| * Run this function to generate the code that declares the global masks. |
| */ |
| void gen_globals() { |
| GrVertexLayout stageTexCoordMasks[GrDrawState::kNumStages]; |
| GrVertexLayout stageMasks[GrDrawState::kNumStages]; |
| GrVertexLayout texCoordMasks[GrDrawState::kMaxTexCoords]; |
| gen_mask_arrays(stageTexCoordMasks, stageMasks, texCoordMasks); |
| |
| GrPrintf("const GrVertexLayout gStageTexCoordMasks[] = {\n"); |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| GrPrintf(" 0x%x,\n", stageTexCoordMasks[s]); |
| } |
| GrPrintf("};\n"); |
| GrPrintf("GR_STATIC_ASSERT(GrDrawState::kNumStages == GR_ARRAY_COUNT(gStageTexCoordMasks));\n\n"); |
| GrPrintf("const GrVertexLayout gStageMasks[] = {\n"); |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| GrPrintf(" 0x%x,\n", stageMasks[s]); |
| } |
| GrPrintf("};\n"); |
| GrPrintf("GR_STATIC_ASSERT(GrDrawState::kNumStages == GR_ARRAY_COUNT(gStageMasks));\n\n"); |
| GrPrintf("const GrVertexLayout gTexCoordMasks[] = {\n"); |
| for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { |
| GrPrintf(" 0x%x,\n", texCoordMasks[t]); |
| } |
| GrPrintf("};\n"); |
| GrPrintf("GR_STATIC_ASSERT(GrDrawState::kMaxTexCoords == GR_ARRAY_COUNT(gTexCoordMasks));\n"); |
| } |
| |
| /* These values were generated by the above function */ |
| const GrVertexLayout gStageTexCoordMasks[] = { |
| 0x49, |
| 0x92, |
| 0x124 |
| }; |
| |
| GR_STATIC_ASSERT(GrDrawState::kNumStages == GR_ARRAY_COUNT(gStageTexCoordMasks)); |
| const GrVertexLayout gStageMasks[] = { |
| 0x249, |
| 0x492, |
| 0x924 |
| }; |
| |
| GR_STATIC_ASSERT(GrDrawState::kNumStages == GR_ARRAY_COUNT(gStageMasks)); |
| const GrVertexLayout gTexCoordMasks[] = { |
| 0x7, |
| 0x38, |
| 0x1c0, |
| }; |
| GR_STATIC_ASSERT(GrDrawState::kMaxTexCoords == GR_ARRAY_COUNT(gTexCoordMasks)); |
| |
| bool check_layout(GrVertexLayout layout) { |
| // can only have 1 or 0 bits set for each stage. |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| int stageBits = layout & gStageMasks[s]; |
| if (stageBits && !GrIsPow2(stageBits)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| int num_tex_coords(GrVertexLayout layout) { |
| int cnt = 0; |
| // figure out how many tex coordinates are present |
| for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { |
| if (gTexCoordMasks[t] & layout) { |
| ++cnt; |
| } |
| } |
| return cnt; |
| } |
| |
| } //unnamed namespace |
| |
| size_t GrDrawTarget::VertexSize(GrVertexLayout vertexLayout) { |
| GrAssert(check_layout(vertexLayout)); |
| |
| size_t vecSize = (vertexLayout & kTextFormat_VertexLayoutBit) ? |
| sizeof(GrGpuTextVertex) : |
| sizeof(GrPoint); |
| |
| size_t size = vecSize; // position |
| size += num_tex_coords(vertexLayout) * vecSize; |
| if (vertexLayout & kColor_VertexLayoutBit) { |
| size += sizeof(GrColor); |
| } |
| if (vertexLayout & kCoverage_VertexLayoutBit) { |
| size += sizeof(GrColor); |
| } |
| if (vertexLayout & kEdge_VertexLayoutBit) { |
| size += 4 * sizeof(GrScalar); |
| } |
| return size; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| /** |
| * Functions for computing offsets of various components from the layout |
| * bitfield. |
| * |
| * Order of vertex components: |
| * Position |
| * Tex Coord 0 |
| * ... |
| * Tex Coord GrDrawState::kMaxTexCoords-1 |
| * Color |
| * Coverage |
| */ |
| |
| int GrDrawTarget::VertexStageCoordOffset(int stage, GrVertexLayout vertexLayout) { |
| GrAssert(check_layout(vertexLayout)); |
| if (StagePosAsTexCoordVertexLayoutBit(stage) & vertexLayout) { |
| return 0; |
| } |
| int tcIdx = VertexTexCoordsForStage(stage, vertexLayout); |
| if (tcIdx >= 0) { |
| |
| int vecSize = (vertexLayout & kTextFormat_VertexLayoutBit) ? |
| sizeof(GrGpuTextVertex) : |
| sizeof(GrPoint); |
| int offset = vecSize; // position |
| // figure out how many tex coordinates are present and precede this one. |
| for (int t = 0; t < tcIdx; ++t) { |
| if (gTexCoordMasks[t] & vertexLayout) { |
| offset += vecSize; |
| } |
| } |
| return offset; |
| } |
| |
| return -1; |
| } |
| |
| int GrDrawTarget::VertexColorOffset(GrVertexLayout vertexLayout) { |
| GrAssert(check_layout(vertexLayout)); |
| |
| if (vertexLayout & kColor_VertexLayoutBit) { |
| int vecSize = (vertexLayout & kTextFormat_VertexLayoutBit) ? |
| sizeof(GrGpuTextVertex) : |
| sizeof(GrPoint); |
| return vecSize * (num_tex_coords(vertexLayout) + 1); //+1 for pos |
| } |
| return -1; |
| } |
| |
| int GrDrawTarget::VertexCoverageOffset(GrVertexLayout vertexLayout) { |
| GrAssert(check_layout(vertexLayout)); |
| |
| if (vertexLayout & kCoverage_VertexLayoutBit) { |
| int vecSize = (vertexLayout & kTextFormat_VertexLayoutBit) ? |
| sizeof(GrGpuTextVertex) : |
| sizeof(GrPoint); |
| |
| int offset = vecSize * (num_tex_coords(vertexLayout) + 1); |
| if (vertexLayout & kColor_VertexLayoutBit) { |
| offset += sizeof(GrColor); |
| } |
| return offset; |
| } |
| return -1; |
| } |
| |
| int GrDrawTarget::VertexEdgeOffset(GrVertexLayout vertexLayout) { |
| GrAssert(check_layout(vertexLayout)); |
| |
| // edge pts are after the pos, tex coords, and color |
| if (vertexLayout & kEdge_VertexLayoutBit) { |
| int vecSize = (vertexLayout & kTextFormat_VertexLayoutBit) ? |
| sizeof(GrGpuTextVertex) : |
| sizeof(GrPoint); |
| int offset = vecSize * (num_tex_coords(vertexLayout) + 1); //+1 for pos |
| if (vertexLayout & kColor_VertexLayoutBit) { |
| offset += sizeof(GrColor); |
| } |
| if (vertexLayout & kCoverage_VertexLayoutBit) { |
| offset += sizeof(GrColor); |
| } |
| return offset; |
| } |
| return -1; |
| } |
| |
| int GrDrawTarget::VertexSizeAndOffsetsByIdx( |
| GrVertexLayout vertexLayout, |
| int texCoordOffsetsByIdx[GrDrawState::kMaxTexCoords], |
| int* colorOffset, |
| int* coverageOffset, |
| int* edgeOffset) { |
| GrAssert(check_layout(vertexLayout)); |
| |
| int vecSize = (vertexLayout & kTextFormat_VertexLayoutBit) ? |
| sizeof(GrGpuTextVertex) : |
| sizeof(GrPoint); |
| int size = vecSize; // position |
| |
| for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { |
| if (gTexCoordMasks[t] & vertexLayout) { |
| if (NULL != texCoordOffsetsByIdx) { |
| texCoordOffsetsByIdx[t] = size; |
| } |
| size += vecSize; |
| } else { |
| if (NULL != texCoordOffsetsByIdx) { |
| texCoordOffsetsByIdx[t] = -1; |
| } |
| } |
| } |
| if (kColor_VertexLayoutBit & vertexLayout) { |
| if (NULL != colorOffset) { |
| *colorOffset = size; |
| } |
| size += sizeof(GrColor); |
| } else { |
| if (NULL != colorOffset) { |
| *colorOffset = -1; |
| } |
| } |
| if (kCoverage_VertexLayoutBit & vertexLayout) { |
| if (NULL != coverageOffset) { |
| *coverageOffset = size; |
| } |
| size += sizeof(GrColor); |
| } else { |
| if (NULL != coverageOffset) { |
| *coverageOffset = -1; |
| } |
| } |
| if (kEdge_VertexLayoutBit & vertexLayout) { |
| if (NULL != edgeOffset) { |
| *edgeOffset = size; |
| } |
| size += 4 * sizeof(GrScalar); |
| } else { |
| if (NULL != edgeOffset) { |
| *edgeOffset = -1; |
| } |
| } |
| return size; |
| } |
| |
| int GrDrawTarget::VertexSizeAndOffsetsByStage( |
| GrVertexLayout vertexLayout, |
| int texCoordOffsetsByStage[GrDrawState::kNumStages], |
| int* colorOffset, |
| int* coverageOffset, |
| int* edgeOffset) { |
| GrAssert(check_layout(vertexLayout)); |
| |
| int texCoordOffsetsByIdx[GrDrawState::kMaxTexCoords]; |
| int size = VertexSizeAndOffsetsByIdx(vertexLayout, |
| (NULL == texCoordOffsetsByStage) ? |
| NULL : |
| texCoordOffsetsByIdx, |
| colorOffset, |
| coverageOffset, |
| edgeOffset); |
| if (NULL != texCoordOffsetsByStage) { |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| int tcIdx; |
| if (StagePosAsTexCoordVertexLayoutBit(s) & vertexLayout) { |
| texCoordOffsetsByStage[s] = 0; |
| } else if ((tcIdx = VertexTexCoordsForStage(s, vertexLayout)) >= 0) { |
| texCoordOffsetsByStage[s] = texCoordOffsetsByIdx[tcIdx]; |
| } else { |
| texCoordOffsetsByStage[s] = -1; |
| } |
| } |
| } |
| return size; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrDrawTarget::VertexUsesStage(int stage, GrVertexLayout vertexLayout) { |
| GrAssert(stage < GrDrawState::kNumStages); |
| GrAssert(check_layout(vertexLayout)); |
| return !!(gStageMasks[stage] & vertexLayout); |
| } |
| |
| bool GrDrawTarget::VertexUsesTexCoordIdx(int coordIndex, |
| GrVertexLayout vertexLayout) { |
| GrAssert(coordIndex < GrDrawState::kMaxTexCoords); |
| GrAssert(check_layout(vertexLayout)); |
| return !!(gTexCoordMasks[coordIndex] & vertexLayout); |
| } |
| |
| int GrDrawTarget::VertexTexCoordsForStage(int stage, |
| GrVertexLayout vertexLayout) { |
| GrAssert(stage < GrDrawState::kNumStages); |
| GrAssert(check_layout(vertexLayout)); |
| int bit = vertexLayout & gStageTexCoordMasks[stage]; |
| if (bit) { |
| // figure out which set of texture coordates is used |
| // bits are ordered T0S0, T0S1, T0S2, ..., T1S0, T1S1, ... |
| // and start at bit 0. |
| GR_STATIC_ASSERT(sizeof(GrVertexLayout) <= sizeof(uint32_t)); |
| return (32 - Gr_clz(bit) - 1) / GrDrawState::kNumStages; |
| } |
| return -1; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrDrawTarget::VertexLayoutUnitTest() { |
| // Ensure that our globals mask arrays are correct |
| GrVertexLayout stageTexCoordMasks[GrDrawState::kNumStages]; |
| GrVertexLayout stageMasks[GrDrawState::kNumStages]; |
| GrVertexLayout texCoordMasks[GrDrawState::kMaxTexCoords]; |
| gen_mask_arrays(stageTexCoordMasks, stageMasks, texCoordMasks); |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| GrAssert(stageTexCoordMasks[s] == gStageTexCoordMasks[s]); |
| GrAssert(stageMasks[s] == gStageMasks[s]); |
| } |
| for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { |
| GrAssert(texCoordMasks[t] == gTexCoordMasks[t]); |
| } |
| |
| // not necessarily exhaustive |
| static bool run; |
| if (!run) { |
| run = true; |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| |
| GrAssert(!VertexUsesStage(s, 0)); |
| GrAssert(-1 == VertexStageCoordOffset(s, 0)); |
| GrVertexLayout stageMask = 0; |
| for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { |
| stageMask |= StageTexCoordVertexLayoutBit(s,t); |
| } |
| GrAssert(1 == GrDrawState::kMaxTexCoords || |
| !check_layout(stageMask)); |
| GrAssert(gStageTexCoordMasks[s] == stageMask); |
| stageMask |= StagePosAsTexCoordVertexLayoutBit(s); |
| GrAssert(gStageMasks[s] == stageMask); |
| GrAssert(!check_layout(stageMask)); |
| } |
| for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { |
| GrVertexLayout tcMask = 0; |
| GrAssert(!VertexUsesTexCoordIdx(t, 0)); |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| tcMask |= StageTexCoordVertexLayoutBit(s,t); |
| GrAssert(VertexUsesStage(s, tcMask)); |
| GrAssert(sizeof(GrPoint) == VertexStageCoordOffset(s, tcMask)); |
| GrAssert(VertexUsesTexCoordIdx(t, tcMask)); |
| GrAssert(2*sizeof(GrPoint) == VertexSize(tcMask)); |
| GrAssert(t == VertexTexCoordsForStage(s, tcMask)); |
| for (int s2 = s + 1; s2 < GrDrawState::kNumStages; ++s2) { |
| GrAssert(-1 == VertexStageCoordOffset(s2, tcMask)); |
| GrAssert(!VertexUsesStage(s2, tcMask)); |
| GrAssert(-1 == VertexTexCoordsForStage(s2, tcMask)); |
| |
| #if GR_DEBUG |
| GrVertexLayout posAsTex = tcMask | StagePosAsTexCoordVertexLayoutBit(s2); |
| #endif |
| GrAssert(0 == VertexStageCoordOffset(s2, posAsTex)); |
| GrAssert(VertexUsesStage(s2, posAsTex)); |
| GrAssert(2*sizeof(GrPoint) == VertexSize(posAsTex)); |
| GrAssert(-1 == VertexTexCoordsForStage(s2, posAsTex)); |
| GrAssert(-1 == VertexEdgeOffset(posAsTex)); |
| } |
| GrAssert(-1 == VertexEdgeOffset(tcMask)); |
| GrAssert(-1 == VertexColorOffset(tcMask)); |
| GrAssert(-1 == VertexCoverageOffset(tcMask)); |
| #if GR_DEBUG |
| GrVertexLayout withColor = tcMask | kColor_VertexLayoutBit; |
| #endif |
| GrAssert(-1 == VertexCoverageOffset(withColor)); |
| GrAssert(2*sizeof(GrPoint) == VertexColorOffset(withColor)); |
| GrAssert(2*sizeof(GrPoint) + sizeof(GrColor) == VertexSize(withColor)); |
| #if GR_DEBUG |
| GrVertexLayout withEdge = tcMask | kEdge_VertexLayoutBit; |
| #endif |
| GrAssert(-1 == VertexColorOffset(withEdge)); |
| GrAssert(2*sizeof(GrPoint) == VertexEdgeOffset(withEdge)); |
| GrAssert(4*sizeof(GrPoint) == VertexSize(withEdge)); |
| #if GR_DEBUG |
| GrVertexLayout withColorAndEdge = withColor | kEdge_VertexLayoutBit; |
| #endif |
| GrAssert(2*sizeof(GrPoint) == VertexColorOffset(withColorAndEdge)); |
| GrAssert(2*sizeof(GrPoint) + sizeof(GrColor) == VertexEdgeOffset(withColorAndEdge)); |
| GrAssert(4*sizeof(GrPoint) + sizeof(GrColor) == VertexSize(withColorAndEdge)); |
| #if GR_DEBUG |
| GrVertexLayout withCoverage = tcMask | kCoverage_VertexLayoutBit; |
| #endif |
| GrAssert(-1 == VertexColorOffset(withCoverage)); |
| GrAssert(2*sizeof(GrPoint) == VertexCoverageOffset(withCoverage)); |
| GrAssert(2*sizeof(GrPoint) + sizeof(GrColor) == VertexSize(withCoverage)); |
| #if GR_DEBUG |
| GrVertexLayout withCoverageAndColor = tcMask | kCoverage_VertexLayoutBit | |
| kColor_VertexLayoutBit; |
| #endif |
| GrAssert(2*sizeof(GrPoint) == VertexColorOffset(withCoverageAndColor)); |
| GrAssert(2*sizeof(GrPoint) + sizeof(GrColor) == VertexCoverageOffset(withCoverageAndColor)); |
| GrAssert(2*sizeof(GrPoint) + 2 * sizeof(GrColor) == VertexSize(withCoverageAndColor)); |
| } |
| GrAssert(gTexCoordMasks[t] == tcMask); |
| GrAssert(check_layout(tcMask)); |
| |
| int stageOffsets[GrDrawState::kNumStages]; |
| int colorOffset; |
| int edgeOffset; |
| int coverageOffset; |
| int size; |
| size = VertexSizeAndOffsetsByStage(tcMask, |
| stageOffsets, &colorOffset, |
| &coverageOffset, &edgeOffset); |
| GrAssert(2*sizeof(GrPoint) == size); |
| GrAssert(-1 == colorOffset); |
| GrAssert(-1 == coverageOffset); |
| GrAssert(-1 == edgeOffset); |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| GrAssert(VertexUsesStage(s, tcMask)); |
| GrAssert(sizeof(GrPoint) == stageOffsets[s]); |
| GrAssert(sizeof(GrPoint) == VertexStageCoordOffset(s, tcMask)); |
| } |
| } |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| #define DEBUG_INVAL_BUFFER 0xdeadcafe |
| #define DEBUG_INVAL_START_IDX -1 |
| |
| GrDrawTarget::GrDrawTarget() { |
| #if GR_DEBUG |
| VertexLayoutUnitTest(); |
| #endif |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.push_back(); |
| #if GR_DEBUG |
| geoSrc.fVertexCount = DEBUG_INVAL_START_IDX; |
| geoSrc.fVertexBuffer = (GrVertexBuffer*)DEBUG_INVAL_BUFFER; |
| geoSrc.fIndexCount = DEBUG_INVAL_START_IDX; |
| geoSrc.fIndexBuffer = (GrIndexBuffer*)DEBUG_INVAL_BUFFER; |
| #endif |
| geoSrc.fVertexSrc = kNone_GeometrySrcType; |
| geoSrc.fIndexSrc = kNone_GeometrySrcType; |
| } |
| |
| GrDrawTarget::~GrDrawTarget() { |
| GrAssert(1 == fGeoSrcStateStack.count()); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| GrAssert(kNone_GeometrySrcType == geoSrc.fIndexSrc); |
| GrAssert(kNone_GeometrySrcType == geoSrc.fVertexSrc); |
| } |
| |
| void GrDrawTarget::releaseGeometry() { |
| int popCnt = fGeoSrcStateStack.count() - 1; |
| while (popCnt) { |
| this->popGeometrySource(); |
| --popCnt; |
| } |
| this->resetVertexSource(); |
| this->resetIndexSource(); |
| } |
| |
| void GrDrawTarget::setClip(const GrClip& clip) { |
| clipWillBeSet(clip); |
| fClip = clip; |
| } |
| |
| const GrClip& GrDrawTarget::getClip() const { |
| return fClip; |
| } |
| |
| void GrDrawTarget::saveCurrentDrawState(SavedDrawState* state) const { |
| state->fState.set(fCurrDrawState); |
| } |
| |
| void GrDrawTarget::restoreDrawState(const SavedDrawState& state) { |
| fCurrDrawState = *state.fState.get(); |
| } |
| |
| void GrDrawTarget::copyDrawState(const GrDrawTarget& srcTarget) { |
| fCurrDrawState = srcTarget.fCurrDrawState; |
| } |
| |
| bool GrDrawTarget::reserveVertexSpace(GrVertexLayout vertexLayout, |
| int vertexCount, |
| void** vertices) { |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| bool acquired = false; |
| if (vertexCount > 0) { |
| GrAssert(NULL != vertices); |
| this->releasePreviousVertexSource(); |
| geoSrc.fVertexSrc = kNone_GeometrySrcType; |
| |
| acquired = this->onReserveVertexSpace(vertexLayout, |
| vertexCount, |
| vertices); |
| } |
| if (acquired) { |
| geoSrc.fVertexSrc = kReserved_GeometrySrcType; |
| geoSrc.fVertexCount = vertexCount; |
| geoSrc.fVertexLayout = vertexLayout; |
| } else if (NULL != vertices) { |
| *vertices = NULL; |
| } |
| return acquired; |
| } |
| |
| bool GrDrawTarget::reserveIndexSpace(int indexCount, |
| void** indices) { |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| bool acquired = false; |
| if (indexCount > 0) { |
| GrAssert(NULL != indices); |
| this->releasePreviousIndexSource(); |
| geoSrc.fIndexSrc = kNone_GeometrySrcType; |
| |
| acquired = this->onReserveIndexSpace(indexCount, indices); |
| } |
| if (acquired) { |
| geoSrc.fIndexSrc = kReserved_GeometrySrcType; |
| geoSrc.fIndexCount = indexCount; |
| } else if (NULL != indices) { |
| *indices = NULL; |
| } |
| return acquired; |
| |
| } |
| |
| bool GrDrawTarget::geometryHints(GrVertexLayout vertexLayout, |
| int32_t* vertexCount, |
| int32_t* indexCount) const { |
| if (NULL != vertexCount) { |
| *vertexCount = -1; |
| } |
| if (NULL != indexCount) { |
| *indexCount = -1; |
| } |
| return false; |
| } |
| |
| void GrDrawTarget::releasePreviousVertexSource() { |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| switch (geoSrc.fVertexSrc) { |
| case kNone_GeometrySrcType: |
| break; |
| case kArray_GeometrySrcType: |
| this->releaseVertexArray(); |
| break; |
| case kReserved_GeometrySrcType: |
| this->releaseReservedVertexSpace(); |
| break; |
| case kBuffer_GeometrySrcType: |
| geoSrc.fVertexBuffer->unref(); |
| #if GR_DEBUG |
| geoSrc.fVertexBuffer = (GrVertexBuffer*)DEBUG_INVAL_BUFFER; |
| #endif |
| break; |
| default: |
| GrCrash("Unknown Vertex Source Type."); |
| break; |
| } |
| } |
| |
| void GrDrawTarget::releasePreviousIndexSource() { |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| switch (geoSrc.fIndexSrc) { |
| case kNone_GeometrySrcType: // these two don't require |
| break; |
| case kArray_GeometrySrcType: |
| this->releaseIndexArray(); |
| break; |
| case kReserved_GeometrySrcType: |
| this->releaseReservedIndexSpace(); |
| break; |
| case kBuffer_GeometrySrcType: |
| geoSrc.fIndexBuffer->unref(); |
| #if GR_DEBUG |
| geoSrc.fIndexBuffer = (GrIndexBuffer*)DEBUG_INVAL_BUFFER; |
| #endif |
| break; |
| default: |
| GrCrash("Unknown Index Source Type."); |
| break; |
| } |
| } |
| |
| void GrDrawTarget::setVertexSourceToArray(GrVertexLayout vertexLayout, |
| const void* vertexArray, |
| int vertexCount) { |
| this->releasePreviousVertexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fVertexSrc = kArray_GeometrySrcType; |
| geoSrc.fVertexLayout = vertexLayout; |
| geoSrc.fVertexCount = vertexCount; |
| this->onSetVertexSourceToArray(vertexArray, vertexCount); |
| } |
| |
| void GrDrawTarget::setIndexSourceToArray(const void* indexArray, |
| int indexCount) { |
| this->releasePreviousIndexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fIndexSrc = kArray_GeometrySrcType; |
| geoSrc.fIndexCount = indexCount; |
| this->onSetIndexSourceToArray(indexArray, indexCount); |
| } |
| |
| void GrDrawTarget::setVertexSourceToBuffer(GrVertexLayout vertexLayout, |
| const GrVertexBuffer* buffer) { |
| this->releasePreviousVertexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fVertexSrc = kBuffer_GeometrySrcType; |
| geoSrc.fVertexBuffer = buffer; |
| buffer->ref(); |
| geoSrc.fVertexLayout = vertexLayout; |
| } |
| |
| void GrDrawTarget::setIndexSourceToBuffer(const GrIndexBuffer* buffer) { |
| this->releasePreviousIndexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fIndexSrc = kBuffer_GeometrySrcType; |
| geoSrc.fIndexBuffer = buffer; |
| buffer->ref(); |
| } |
| |
| void GrDrawTarget::resetVertexSource() { |
| this->releasePreviousVertexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fVertexSrc = kNone_GeometrySrcType; |
| } |
| |
| void GrDrawTarget::resetIndexSource() { |
| this->releasePreviousIndexSource(); |
| GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| geoSrc.fIndexSrc = kNone_GeometrySrcType; |
| } |
| |
| void GrDrawTarget::pushGeometrySource() { |
| this->geometrySourceWillPush(); |
| GeometrySrcState& newState = fGeoSrcStateStack.push_back(); |
| newState.fIndexSrc = kNone_GeometrySrcType; |
| newState.fVertexSrc = kNone_GeometrySrcType; |
| #if GR_DEBUG |
| newState.fVertexCount = ~0; |
| newState.fVertexBuffer = (GrVertexBuffer*)~0; |
| newState.fIndexCount = ~0; |
| newState.fIndexBuffer = (GrIndexBuffer*)~0; |
| #endif |
| } |
| |
| void GrDrawTarget::popGeometrySource() { |
| const GeometrySrcState& geoSrc = this->getGeomSrc(); |
| // if popping last element then pops are unbalanced with pushes |
| GrAssert(fGeoSrcStateStack.count() > 1); |
| |
| this->geometrySourceWillPop(fGeoSrcStateStack.fromBack(1)); |
| this->releasePreviousVertexSource(); |
| this->releasePreviousIndexSource(); |
| fGeoSrcStateStack.pop_back(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrDrawTarget::checkDraw(GrPrimitiveType type, int startVertex, |
| int startIndex, int vertexCount, |
| int indexCount) const { |
| #if GR_DEBUG |
| const GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); |
| int maxVertex = startVertex + vertexCount; |
| int maxValidVertex; |
| switch (geoSrc.fVertexSrc) { |
| case kNone_GeometrySrcType: |
| GrCrash("Attempting to draw without vertex src."); |
| case kReserved_GeometrySrcType: // fallthrough |
| case kArray_GeometrySrcType: |
| maxValidVertex = geoSrc.fVertexCount; |
| break; |
| case kBuffer_GeometrySrcType: |
| maxValidVertex = geoSrc.fVertexBuffer->sizeInBytes() / |
| VertexSize(geoSrc.fVertexLayout); |
| break; |
| } |
| if (maxVertex > maxValidVertex) { |
| GrCrash("Drawing outside valid vertex range."); |
| } |
| if (indexCount > 0) { |
| int maxIndex = startIndex + indexCount; |
| int maxValidIndex; |
| switch (geoSrc.fIndexSrc) { |
| case kNone_GeometrySrcType: |
| GrCrash("Attempting to draw indexed geom without index src."); |
| case kReserved_GeometrySrcType: // fallthrough |
| case kArray_GeometrySrcType: |
| maxValidIndex = geoSrc.fIndexCount; |
| break; |
| case kBuffer_GeometrySrcType: |
| maxValidIndex = geoSrc.fIndexBuffer->sizeInBytes() / sizeof(uint16_t); |
| break; |
| } |
| if (maxIndex > maxValidIndex) { |
| GrCrash("Index reads outside valid index range."); |
| } |
| } |
| #endif |
| const GrDrawState& drawState = this->getDrawState(); |
| if (NULL == drawState.getRenderTarget()) { |
| return false; |
| } |
| if (GrPixelConfigIsUnpremultiplied(drawState.getRenderTarget()->config())) { |
| if (kOne_BlendCoeff != drawState.getSrcBlendCoeff() || |
| kZero_BlendCoeff != drawState.getDstBlendCoeff()) { |
| return false; |
| } |
| } |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| // We don't support using unpremultiplied textures with filters (other |
| // than nearest). Alpha-premulling is not distributive WRT to filtering. |
| // We'd have to filter each texel before filtering. We could do this for |
| // our custom filters but we would also have to disable bilerp and do |
| // a custom bilerp in the shader. Until Skia itself supports unpremul |
| // configs there is no pressure to implement this. |
| if (this->isStageEnabled(s) && |
| GrPixelConfigIsUnpremultiplied(drawState.getTexture(s)->config()) && |
| GrSamplerState::kNearest_Filter != |
| drawState.getSampler(s).getFilter()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| void GrDrawTarget::drawIndexed(GrPrimitiveType type, int startVertex, |
| int startIndex, int vertexCount, |
| int indexCount) { |
| if (indexCount > 0 && |
| this->checkDraw(type, startVertex, startIndex, |
| vertexCount, indexCount)) { |
| this->onDrawIndexed(type, startVertex, startIndex, |
| vertexCount, indexCount); |
| } |
| } |
| |
| void GrDrawTarget::drawNonIndexed(GrPrimitiveType type, |
| int startVertex, |
| int vertexCount) { |
| if (vertexCount > 0 && |
| this->checkDraw(type, startVertex, -1, vertexCount, -1)) { |
| this->onDrawNonIndexed(type, startVertex, vertexCount); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| // Some blend modes allow folding a partial coverage value into the color's |
| // alpha channel, while others will blend incorrectly. |
| bool GrDrawTarget::canTweakAlphaForCoverage() const { |
| /** |
| * The fractional coverage is f |
| * The src and dst coeffs are Cs and Cd |
| * The dst and src colors are S and D |
| * We want the blend to compute: f*Cs*S + (f*Cd + (1-f))D |
| * By tweaking the source color's alpha we're replacing S with S'=fS. It's |
| * obvious that that first term will always be ok. The second term can be |
| * rearranged as [1-(1-Cd)f]D. By substituing in the various possbilities |
| * for Cd we find that only 1, ISA, and ISC produce the correct depth |
| * coeffecient in terms of S' and D. |
| */ |
| GrBlendCoeff dstCoeff = this->getDrawState().getDstBlendCoeff(); |
| return kOne_BlendCoeff == dstCoeff || |
| kISA_BlendCoeff == dstCoeff || |
| kISC_BlendCoeff == dstCoeff; |
| } |
| |
| |
| bool GrDrawTarget::srcAlphaWillBeOne() const { |
| const GrVertexLayout& layout = this->getGeomSrc().fVertexLayout; |
| const GrDrawState& drawState = this->getDrawState(); |
| |
| // Check if per-vertex or constant color may have partial alpha |
| if ((layout & kColor_VertexLayoutBit) || |
| 0xff != GrColorUnpackA(drawState.getColor())) { |
| return false; |
| } |
| // Check if color filter could introduce an alpha |
| // (TODO: Consider being more aggressive with regards to detecting 0xff |
| // final alpha from color filter). |
| if (SkXfermode::kDst_Mode != drawState.getColorFilterMode()) { |
| return false; |
| } |
| // Check if a color stage could create a partial alpha |
| for (int s = 0; s < drawState.getFirstCoverageStage(); ++s) { |
| if (StageWillBeUsed(s, layout, fCurrDrawState)) { |
| GrAssert(NULL != drawState.getTexture(s)); |
| GrPixelConfig config = drawState.getTexture(s)->config(); |
| if (!GrPixelConfigIsOpaque(config)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| GrDrawTarget::BlendOptFlags |
| GrDrawTarget::getBlendOpts(bool forceCoverage, |
| GrBlendCoeff* srcCoeff, |
| GrBlendCoeff* dstCoeff) const { |
| |
| const GrVertexLayout& layout = this->getGeomSrc().fVertexLayout; |
| const GrDrawState& drawState = this->getDrawState(); |
| |
| GrBlendCoeff bogusSrcCoeff, bogusDstCoeff; |
| if (NULL == srcCoeff) { |
| srcCoeff = &bogusSrcCoeff; |
| } |
| *srcCoeff = drawState.getSrcBlendCoeff(); |
| |
| if (NULL == dstCoeff) { |
| dstCoeff = &bogusDstCoeff; |
| } |
| *dstCoeff = drawState.getDstBlendCoeff(); |
| |
| // We don't ever expect source coeffecients to reference the source |
| GrAssert(kSA_BlendCoeff != *srcCoeff && |
| kISA_BlendCoeff != *srcCoeff && |
| kSC_BlendCoeff != *srcCoeff && |
| kISC_BlendCoeff != *srcCoeff); |
| // same for dst |
| GrAssert(kDA_BlendCoeff != *dstCoeff && |
| kIDA_BlendCoeff != *dstCoeff && |
| kDC_BlendCoeff != *dstCoeff && |
| kIDC_BlendCoeff != *dstCoeff); |
| |
| if (drawState.isColorWriteDisabled()) { |
| *srcCoeff = kZero_BlendCoeff; |
| *dstCoeff = kOne_BlendCoeff; |
| } |
| |
| bool srcAIsOne = this->srcAlphaWillBeOne(); |
| bool dstCoeffIsOne = kOne_BlendCoeff == *dstCoeff || |
| (kSA_BlendCoeff == *dstCoeff && srcAIsOne); |
| bool dstCoeffIsZero = kZero_BlendCoeff == *dstCoeff || |
| (kISA_BlendCoeff == *dstCoeff && srcAIsOne); |
| |
| |
| // When coeffs are (0,1) there is no reason to draw at all, unless |
| // stenciling is enabled. Having color writes disabled is effectively |
| // (0,1). The same applies when coverage is known to be 0. |
| if ((kZero_BlendCoeff == *srcCoeff && dstCoeffIsOne) || |
| (!(layout & kCoverage_VertexLayoutBit) && |
| 0 == drawState.getCoverage())) { |
| if (drawState.getStencil().doesWrite()) { |
| return kDisableBlend_BlendOptFlag | |
| kEmitTransBlack_BlendOptFlag; |
| } else { |
| return kSkipDraw_BlendOptFlag; |
| } |
| } |
| |
| // check for coverage due to constant coverage, per-vertex coverage, |
| // edge aa or coverage texture stage |
| bool hasCoverage = forceCoverage || |
| 0xffffffff != drawState.getCoverage() || |
| drawState.getNumAAEdges() > 0 || |
| (layout & kCoverage_VertexLayoutBit) || |
| (layout & kEdge_VertexLayoutBit); |
| for (int s = drawState.getFirstCoverageStage(); |
| !hasCoverage && s < GrDrawState::kNumStages; |
| ++s) { |
| if (StageWillBeUsed(s, layout, fCurrDrawState)) { |
| hasCoverage = true; |
| } |
| } |
| |
| // if we don't have coverage we can check whether the dst |
| // has to read at all. If not, we'll disable blending. |
| if (!hasCoverage) { |
| if (dstCoeffIsZero) { |
| if (kOne_BlendCoeff == *srcCoeff) { |
| // if there is no coverage and coeffs are (1,0) then we |
| // won't need to read the dst at all, it gets replaced by src |
| return kDisableBlend_BlendOptFlag; |
| } else if (kZero_BlendCoeff == *srcCoeff) { |
| // if the op is "clear" then we don't need to emit a color |
| // or blend, just write transparent black into the dst. |
| *srcCoeff = kOne_BlendCoeff; |
| *dstCoeff = kZero_BlendCoeff; |
| return kDisableBlend_BlendOptFlag | |
| kEmitTransBlack_BlendOptFlag; |
| } |
| } |
| } else { |
| // check whether coverage can be safely rolled into alpha |
| // of if we can skip color computation and just emit coverage |
| if (this->canTweakAlphaForCoverage()) { |
| return kCoverageAsAlpha_BlendOptFlag; |
| } |
| if (dstCoeffIsZero) { |
| if (kZero_BlendCoeff == *srcCoeff) { |
| // the source color is not included in the blend |
| // the dst coeff is effectively zero so blend works out to: |
| // (c)(0)D + (1-c)D = (1-c)D. |
| *dstCoeff = kISA_BlendCoeff; |
| return kEmitCoverage_BlendOptFlag; |
| } else if (srcAIsOne) { |
| // the dst coeff is effectively zero so blend works out to: |
| // cS + (c)(0)D + (1-c)D = cS + (1-c)D. |
| // If Sa is 1 then we can replace Sa with c |
| // and set dst coeff to 1-Sa. |
| *dstCoeff = kISA_BlendCoeff; |
| return kCoverageAsAlpha_BlendOptFlag; |
| } |
| } else if (dstCoeffIsOne) { |
| // the dst coeff is effectively one so blend works out to: |
| // cS + (c)(1)D + (1-c)D = cS + D. |
| *dstCoeff = kOne_BlendCoeff; |
| return kCoverageAsAlpha_BlendOptFlag; |
| } |
| } |
| return kNone_BlendOpt; |
| } |
| |
| bool GrDrawTarget::willUseHWAALines() const { |
| // there is a conflict between using smooth lines and our use of |
| // premultiplied alpha. Smooth lines tweak the incoming alpha value |
| // but not in a premul-alpha way. So we only use them when our alpha |
| // is 0xff and tweaking the color for partial coverage is OK |
| if (!fCaps.fHWAALineSupport || |
| !this->getDrawState().isHWAntialiasState()) { |
| return false; |
| } |
| BlendOptFlags opts = this->getBlendOpts(); |
| return (kDisableBlend_BlendOptFlag & opts) && |
| (kCoverageAsAlpha_BlendOptFlag & opts); |
| } |
| |
| bool GrDrawTarget::canApplyCoverage() const { |
| // we can correctly apply coverage if a) we have dual source blending |
| // or b) one of our blend optimizations applies. |
| return this->getCaps().fDualSourceBlendingSupport || |
| kNone_BlendOpt != this->getBlendOpts(true); |
| } |
| |
| bool GrDrawTarget::drawWillReadDst() const { |
| return SkToBool((kDisableBlend_BlendOptFlag | kSkipDraw_BlendOptFlag) & |
| this->getBlendOpts()); |
| } |
| |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrDrawTarget::drawRect(const GrRect& rect, |
| const GrMatrix* matrix, |
| StageMask stageMask, |
| const GrRect* srcRects[], |
| const GrMatrix* srcMatrices[]) { |
| GrVertexLayout layout = GetRectVertexLayout(stageMask, srcRects); |
| |
| AutoReleaseGeometry geo(this, layout, 4, 0); |
| if (!geo.succeeded()) { |
| GrPrintf("Failed to get space for vertices!\n"); |
| return; |
| } |
| |
| SetRectVertices(rect, matrix, srcRects, |
| srcMatrices, layout, geo.vertices()); |
| |
| drawNonIndexed(kTriangleFan_PrimitiveType, 0, 4); |
| } |
| |
| GrVertexLayout GrDrawTarget::GetRectVertexLayout(StageMask stageMask, |
| const GrRect* srcRects[]) { |
| GrVertexLayout layout = 0; |
| |
| for (int i = 0; i < GrDrawState::kNumStages; ++i) { |
| int numTC = 0; |
| if (stageMask & (1 << i)) { |
| if (NULL != srcRects && NULL != srcRects[i]) { |
| layout |= StageTexCoordVertexLayoutBit(i, numTC); |
| ++numTC; |
| } else { |
| layout |= StagePosAsTexCoordVertexLayoutBit(i); |
| } |
| } |
| } |
| return layout; |
| } |
| |
| void GrDrawTarget::clipWillBeSet(const GrClip& clip) { |
| } |
| |
| void GrDrawTarget::SetRectVertices(const GrRect& rect, |
| const GrMatrix* matrix, |
| const GrRect* srcRects[], |
| const GrMatrix* srcMatrices[], |
| GrVertexLayout layout, |
| void* vertices) { |
| #if GR_DEBUG |
| // check that the layout and srcRects agree |
| for (int i = 0; i < GrDrawState::kNumStages; ++i) { |
| if (VertexTexCoordsForStage(i, layout) >= 0) { |
| GR_DEBUGASSERT(NULL != srcRects && NULL != srcRects[i]); |
| } else { |
| GR_DEBUGASSERT(NULL == srcRects || NULL == srcRects[i]); |
| } |
| } |
| #endif |
| |
| int stageOffsets[GrDrawState::kNumStages]; |
| int vsize = VertexSizeAndOffsetsByStage(layout, stageOffsets, |
| NULL, NULL, NULL); |
| |
| GrTCast<GrPoint*>(vertices)->setRectFan(rect.fLeft, rect.fTop, |
| rect.fRight, rect.fBottom, |
| vsize); |
| if (NULL != matrix) { |
| matrix->mapPointsWithStride(GrTCast<GrPoint*>(vertices), vsize, 4); |
| } |
| |
| for (int i = 0; i < GrDrawState::kNumStages; ++i) { |
| if (stageOffsets[i] > 0) { |
| GrPoint* coords = GrTCast<GrPoint*>(GrTCast<intptr_t>(vertices) + |
| stageOffsets[i]); |
| coords->setRectFan(srcRects[i]->fLeft, srcRects[i]->fTop, |
| srcRects[i]->fRight, srcRects[i]->fBottom, |
| vsize); |
| if (NULL != srcMatrices && NULL != srcMatrices[i]) { |
| srcMatrices[i]->mapPointsWithStride(coords, vsize, 4); |
| } |
| } |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawTarget::AutoStateRestore::AutoStateRestore() { |
| fDrawTarget = NULL; |
| } |
| |
| GrDrawTarget::AutoStateRestore::AutoStateRestore(GrDrawTarget* target) { |
| fDrawTarget = target; |
| if (NULL != fDrawTarget) { |
| fDrawTarget->saveCurrentDrawState(&fDrawState); |
| } |
| } |
| |
| GrDrawTarget::AutoStateRestore::~AutoStateRestore() { |
| if (NULL != fDrawTarget) { |
| fDrawTarget->restoreDrawState(fDrawState); |
| } |
| } |
| |
| void GrDrawTarget::AutoStateRestore::set(GrDrawTarget* target) { |
| if (target != fDrawTarget) { |
| if (NULL != fDrawTarget) { |
| fDrawTarget->restoreDrawState(fDrawState); |
| } |
| if (NULL != target) { |
| target->saveCurrentDrawState(&fDrawState); |
| } |
| fDrawTarget = target; |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawTarget::AutoDeviceCoordDraw::AutoDeviceCoordDraw( |
| GrDrawTarget* target, |
| GrDrawState::StageMask stageMask) { |
| GrAssert(NULL != target); |
| GrDrawState* drawState = target->drawState(); |
| |
| fDrawTarget = target; |
| fViewMatrix = drawState->getViewMatrix(); |
| fStageMask = stageMask; |
| if (fStageMask) { |
| GrMatrix invVM; |
| if (fViewMatrix.invert(&invVM)) { |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| if (fStageMask & (1 << s)) { |
| fSamplerMatrices[s] = drawState->getSampler(s).getMatrix(); |
| } |
| } |
| drawState->preConcatSamplerMatrices(fStageMask, invVM); |
| } else { |
| // sad trombone sound |
| fStageMask = 0; |
| } |
| } |
| drawState->setViewMatrix(GrMatrix::I()); |
| } |
| |
| GrDrawTarget::AutoDeviceCoordDraw::~AutoDeviceCoordDraw() { |
| GrDrawState* drawState = fDrawTarget->drawState(); |
| drawState->setViewMatrix(fViewMatrix); |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| if (fStageMask & (1 << s)) { |
| *drawState->sampler(s)->matrix() = fSamplerMatrices[s]; |
| } |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawTarget::AutoReleaseGeometry::AutoReleaseGeometry( |
| GrDrawTarget* target, |
| GrVertexLayout vertexLayout, |
| int vertexCount, |
| int indexCount) { |
| fTarget = NULL; |
| this->set(target, vertexLayout, vertexCount, indexCount); |
| } |
| |
| GrDrawTarget::AutoReleaseGeometry::AutoReleaseGeometry() { |
| fTarget = NULL; |
| } |
| |
| GrDrawTarget::AutoReleaseGeometry::~AutoReleaseGeometry() { |
| this->reset(); |
| } |
| |
| bool GrDrawTarget::AutoReleaseGeometry::set(GrDrawTarget* target, |
| GrVertexLayout vertexLayout, |
| int vertexCount, |
| int indexCount) { |
| this->reset(); |
| fTarget = target; |
| bool success = true; |
| if (NULL != fTarget) { |
| fTarget = target; |
| if (vertexCount > 0) { |
| success = target->reserveVertexSpace(vertexLayout, |
| vertexCount, |
| &fVertices); |
| if (!success) { |
| this->reset(); |
| } |
| } |
| if (success && indexCount > 0) { |
| success = target->reserveIndexSpace(indexCount, &fIndices); |
| if (!success) { |
| this->reset(); |
| } |
| } |
| } |
| GrAssert(success == (NULL != fTarget)); |
| return success; |
| } |
| |
| void GrDrawTarget::AutoReleaseGeometry::reset() { |
| if (NULL != fTarget) { |
| if (NULL != fVertices) { |
| fTarget->resetVertexSource(); |
| } |
| if (NULL != fIndices) { |
| fTarget->resetIndexSource(); |
| } |
| fTarget = NULL; |
| } |
| fVertices = NULL; |
| fIndices = NULL; |
| } |
| |
| void GrDrawTarget::Caps::print() const { |
| static const char* gNY[] = {"NO", "YES"}; |
| GrPrintf("8 Bit Palette Support : %s\n", gNY[f8BitPaletteSupport]); |
| GrPrintf("NPOT Texture Tile Support : %s\n", gNY[fNPOTTextureTileSupport]); |
| GrPrintf("Two Sided Stencil Support : %s\n", gNY[fTwoSidedStencilSupport]); |
| GrPrintf("Stencil Wrap Ops Support : %s\n", gNY[fStencilWrapOpsSupport]); |
| GrPrintf("HW AA Lines Support : %s\n", gNY[fHWAALineSupport]); |
| GrPrintf("Shader Derivative Support : %s\n", gNY[fShaderDerivativeSupport]); |
| GrPrintf("Geometry Shader Support : %s\n", gNY[fGeometryShaderSupport]); |
| GrPrintf("FSAA Support : %s\n", gNY[fFSAASupport]); |
| GrPrintf("Dual Source Blending Support: %s\n", gNY[fDualSourceBlendingSupport]); |
| GrPrintf("Buffer Lock Support : %s\n", gNY[fBufferLockSupport]); |
| GrPrintf("Max Texture Size : %d\n", fMaxTextureSize); |
| GrPrintf("Max Render Target Size : %d\n", fMaxRenderTargetSize); |
| } |
| |
