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 = VertexTexCoordsForStage(s, vertexLayout); texCoordOffsetsByStage[s] = tcIdx < 0 ? 0 : texCoordOffsetsByIdx[tcIdx]; } } return size; }
int GrDrawTarget::VertexSizeAndOffsetsByStage(GrVertexLayout vertexLayout, int texCoordOffsetsByStage[kNumStages], int* colorOffset, int* coverageOffset, int* edgeOffset) { GrAssert(check_layout(vertexLayout)); int texCoordOffsetsByIdx[kMaxTexCoords]; int size = VertexSizeAndOffsetsByIdx(vertexLayout, (NULL == texCoordOffsetsByStage) ? NULL : texCoordOffsetsByIdx, colorOffset, coverageOffset, edgeOffset); if (NULL != texCoordOffsetsByStage) { for (int s = 0; s < 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; }
void GrGpuGLShaders::setupGeometry(int* startVertex, int* startIndex, int vertexCount, int indexCount) { int newColorOffset; int newTexCoordOffsets[kMaxTexCoords]; GrGLsizei newStride = VertexSizeAndOffsetsByIdx(fGeometrySrc.fVertexLayout, newTexCoordOffsets, &newColorOffset); int oldColorOffset; int oldTexCoordOffsets[kMaxTexCoords]; GrGLsizei oldStride = VertexSizeAndOffsetsByIdx(fHWGeometryState.fVertexLayout, oldTexCoordOffsets, &oldColorOffset); bool indexed = NULL != startIndex; int extraVertexOffset; int extraIndexOffset; setBuffers(indexed, &extraVertexOffset, &extraIndexOffset); GrGLenum scalarType; bool texCoordNorm; if (fGeometrySrc.fVertexLayout & kTextFormat_VertexLayoutBit) { scalarType = GrGLTextType; texCoordNorm = GR_GL_TEXT_TEXTURE_NORMALIZED; } else { scalarType = GrGLType; texCoordNorm = false; } size_t vertexOffset = (*startVertex + extraVertexOffset) * newStride; *startVertex = 0; if (indexed) { *startIndex += extraIndexOffset; } // all the Pointers must be set if any of these are true bool allOffsetsChange = fHWGeometryState.fArrayPtrsDirty || vertexOffset != fHWGeometryState.fVertexOffset || newStride != oldStride; // position and tex coord offsets change if above conditions are true // or the type/normalization changed based on text vs nontext type coords. bool posAndTexChange = allOffsetsChange || (((GrGLTextType != GrGLType) || GR_GL_TEXT_TEXTURE_NORMALIZED) && (kTextFormat_VertexLayoutBit & (fHWGeometryState.fVertexLayout ^ fGeometrySrc.fVertexLayout))); if (posAndTexChange) { GR_GL(VertexAttribPointer(POS_ATTR_LOCATION, 2, scalarType, false, newStride, (GrGLvoid*)vertexOffset)); fHWGeometryState.fVertexOffset = vertexOffset; } for (int t = 0; t < kMaxTexCoords; ++t) { if (newTexCoordOffsets[t] > 0) { GrGLvoid* texCoordOffset = (GrGLvoid*)(vertexOffset + newTexCoordOffsets[t]); if (oldTexCoordOffsets[t] <= 0) { GR_GL(EnableVertexAttribArray(TEX_ATTR_LOCATION(t))); GR_GL(VertexAttribPointer(TEX_ATTR_LOCATION(t), 2, scalarType, texCoordNorm, newStride, texCoordOffset)); } else if (posAndTexChange || newTexCoordOffsets[t] != oldTexCoordOffsets[t]) { GR_GL(VertexAttribPointer(TEX_ATTR_LOCATION(t), 2, scalarType, texCoordNorm, newStride, texCoordOffset)); } } else if (oldTexCoordOffsets[t] > 0) { GR_GL(DisableVertexAttribArray(TEX_ATTR_LOCATION(t))); } } if (newColorOffset > 0) { GrGLvoid* colorOffset = (int8_t*)(vertexOffset + newColorOffset); if (oldColorOffset <= 0) { GR_GL(EnableVertexAttribArray(COL_ATTR_LOCATION)); GR_GL(VertexAttribPointer(COL_ATTR_LOCATION, 4, GR_GL_UNSIGNED_BYTE, true, newStride, colorOffset)); } else if (allOffsetsChange || newColorOffset != oldColorOffset) { GR_GL(VertexAttribPointer(COL_ATTR_LOCATION, 4, GR_GL_UNSIGNED_BYTE, true, newStride, colorOffset)); } } else if (oldColorOffset > 0) { GR_GL(DisableVertexAttribArray(COL_ATTR_LOCATION)); } fHWGeometryState.fVertexLayout = fGeometrySrc.fVertexLayout; fHWGeometryState.fArrayPtrsDirty = false; }
void GrGpuGLShaders::setupGeometry(int* startVertex, int* startIndex, int vertexCount, int indexCount) { int newColorOffset; int newCoverageOffset; int newTexCoordOffsets[GrDrawState::kMaxTexCoords]; int newEdgeOffset; GrVertexLayout currLayout = this->getVertexLayout(); GrGLsizei newStride = VertexSizeAndOffsetsByIdx( currLayout, newTexCoordOffsets, &newColorOffset, &newCoverageOffset, &newEdgeOffset); int oldColorOffset; int oldCoverageOffset; int oldTexCoordOffsets[GrDrawState::kMaxTexCoords]; int oldEdgeOffset; GrGLsizei oldStride = VertexSizeAndOffsetsByIdx( fHWGeometryState.fVertexLayout, oldTexCoordOffsets, &oldColorOffset, &oldCoverageOffset, &oldEdgeOffset); bool indexed = NULL != startIndex; int extraVertexOffset; int extraIndexOffset; this->setBuffers(indexed, &extraVertexOffset, &extraIndexOffset); GrGLenum scalarType; bool texCoordNorm; if (currLayout & kTextFormat_VertexLayoutBit) { scalarType = TEXT_COORDS_GL_TYPE; texCoordNorm = SkToBool(TEXT_COORDS_ARE_NORMALIZED); } else { GR_STATIC_ASSERT(GR_SCALAR_IS_FLOAT); scalarType = GR_GL_FLOAT; texCoordNorm = false; } size_t vertexOffset = (*startVertex + extraVertexOffset) * newStride; *startVertex = 0; if (indexed) { *startIndex += extraIndexOffset; } // all the Pointers must be set if any of these are true bool allOffsetsChange = fHWGeometryState.fArrayPtrsDirty || vertexOffset != fHWGeometryState.fVertexOffset || newStride != oldStride; // position and tex coord offsets change if above conditions are true // or the type/normalization changed based on text vs nontext type coords. bool posAndTexChange = allOffsetsChange || (((TEXT_COORDS_GL_TYPE != GR_GL_FLOAT) || TEXT_COORDS_ARE_NORMALIZED) && (kTextFormat_VertexLayoutBit & (fHWGeometryState.fVertexLayout ^ currLayout))); if (posAndTexChange) { int idx = GrGLProgram::PositionAttributeIdx(); GL_CALL(VertexAttribPointer(idx, 2, scalarType, false, newStride, (GrGLvoid*)vertexOffset)); fHWGeometryState.fVertexOffset = vertexOffset; } for (int t = 0; t < GrDrawState::kMaxTexCoords; ++t) { if (newTexCoordOffsets[t] > 0) { GrGLvoid* texCoordOffset = (GrGLvoid*)(vertexOffset + newTexCoordOffsets[t]); int idx = GrGLProgram::TexCoordAttributeIdx(t); if (oldTexCoordOffsets[t] <= 0) { GL_CALL(EnableVertexAttribArray(idx)); GL_CALL(VertexAttribPointer(idx, 2, scalarType, texCoordNorm, newStride, texCoordOffset)); } else if (posAndTexChange || newTexCoordOffsets[t] != oldTexCoordOffsets[t]) { GL_CALL(VertexAttribPointer(idx, 2, scalarType, texCoordNorm, newStride, texCoordOffset)); } } else if (oldTexCoordOffsets[t] > 0) { GL_CALL(DisableVertexAttribArray(GrGLProgram::TexCoordAttributeIdx(t))); } } if (newColorOffset > 0) { GrGLvoid* colorOffset = (int8_t*)(vertexOffset + newColorOffset); int idx = GrGLProgram::ColorAttributeIdx(); if (oldColorOffset <= 0) { GL_CALL(EnableVertexAttribArray(idx)); GL_CALL(VertexAttribPointer(idx, 4, GR_GL_UNSIGNED_BYTE, true, newStride, colorOffset)); } else if (allOffsetsChange || newColorOffset != oldColorOffset) { GL_CALL(VertexAttribPointer(idx, 4, GR_GL_UNSIGNED_BYTE, true, newStride, colorOffset)); } } else if (oldColorOffset > 0) { GL_CALL(DisableVertexAttribArray(GrGLProgram::ColorAttributeIdx())); } if (newCoverageOffset > 0) { GrGLvoid* coverageOffset = (int8_t*)(vertexOffset + newCoverageOffset); int idx = GrGLProgram::CoverageAttributeIdx(); if (oldCoverageOffset <= 0) { GL_CALL(EnableVertexAttribArray(idx)); GL_CALL(VertexAttribPointer(idx, 4, GR_GL_UNSIGNED_BYTE, true, newStride, coverageOffset)); } else if (allOffsetsChange || newCoverageOffset != oldCoverageOffset) { GL_CALL(VertexAttribPointer(idx, 4, GR_GL_UNSIGNED_BYTE, true, newStride, coverageOffset)); } } else if (oldCoverageOffset > 0) { GL_CALL(DisableVertexAttribArray(GrGLProgram::CoverageAttributeIdx())); } if (newEdgeOffset > 0) { GrGLvoid* edgeOffset = (int8_t*)(vertexOffset + newEdgeOffset); int idx = GrGLProgram::EdgeAttributeIdx(); if (oldEdgeOffset <= 0) { GL_CALL(EnableVertexAttribArray(idx)); GL_CALL(VertexAttribPointer(idx, 4, scalarType, false, newStride, edgeOffset)); } else if (allOffsetsChange || newEdgeOffset != oldEdgeOffset) { GL_CALL(VertexAttribPointer(idx, 4, scalarType, false, newStride, edgeOffset)); } } else if (oldEdgeOffset > 0) { GL_CALL(DisableVertexAttribArray(GrGLProgram::EdgeAttributeIdx())); } fHWGeometryState.fVertexLayout = currLayout; fHWGeometryState.fArrayPtrsDirty = false; }