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;
}
