bool GrDrawVerticesOp::onCombineIfPossible(GrOp* t, const GrCaps& caps) {
GrDrawVerticesOp* that = t->cast<GrDrawVerticesOp>();
if (!fHelper.isCompatible(that->fHelper, caps, this->bounds(), that->bounds())) {
return false;
}
if (!this->combinablePrimitive() || this->primitiveType() != that->primitiveType()) {
return false;
}
if (fMeshes[0].fVertices->hasIndices() != that->fMeshes[0].fVertices->hasIndices()) {
return false;
}
if (fColorArrayType != that->fColorArrayType) {
return false;
}
if (fLinearizeColors != that->fLinearizeColors) {
return false;
}
if (fVertexCount + that->fVertexCount > SK_MaxU16) {
return false;
}
// NOTE: For SkColor vertex colors, the source color space is always sRGB, and the destination
// gamut is determined by the render target context. A mis-match should be impossible.
SkASSERT(GrColorSpaceXform::Equals(fColorSpaceXform.get(), that->fColorSpaceXform.get()));
// If either op required explicit local coords or per-vertex colors the combined mesh does. Same
// with multiple view matrices.
fFlags |= that->fFlags;
if (!this->requiresPerVertexColors() && this->fMeshes[0].fColor != that->fMeshes[0].fColor) {
fFlags |= kRequiresPerVertexColors_Flag;
}
// Check whether we are about to acquire a mesh with a different view matrix.
if (!this->hasMultipleViewMatrices() &&
!this->fMeshes[0].fViewMatrix.cheapEqualTo(that->fMeshes[0].fViewMatrix)) {
fFlags |= kHasMultipleViewMatrices_Flag;
}
fMeshes.push_back_n(that->fMeshes.count(), that->fMeshes.begin());
fVertexCount += that->fVertexCount;
fIndexCount += that->fIndexCount;
this->joinBounds(*that);
return true;
}
GrOp::CombineResult GrDrawVerticesOp::onCombineIfPossible(GrOp* t, const GrCaps& caps) {
GrDrawVerticesOp* that = t->cast<GrDrawVerticesOp>();
if (!fHelper.isCompatible(that->fHelper, caps, this->bounds(), that->bounds())) {
return CombineResult::kCannotCombine;
}
// Meshes with bones cannot be combined because different meshes use different bones, so to
// combine them, the matrices would have to be combined, and the bone indices on each vertex
// would change, thus making the vertices uncacheable.
if (this->hasBones() || that->hasBones()) {
return CombineResult::kCannotCombine;
}
// Non-volatile meshes cannot batch, because if a non-volatile mesh batches with another mesh,
// then on the next frame, if that non-volatile mesh is drawn, it will draw the other mesh
// that was saved in its vertex buffer, which is not necessarily there anymore.
if (!this->fMeshes[0].fVertices->isVolatile() || !that->fMeshes[0].fVertices->isVolatile()) {
return CombineResult::kCannotCombine;
}
if (!this->combinablePrimitive() || this->primitiveType() != that->primitiveType()) {
return CombineResult::kCannotCombine;
}
if (fMeshes[0].fVertices->hasIndices() != that->fMeshes[0].fVertices->hasIndices()) {
return CombineResult::kCannotCombine;
}
if (fColorArrayType != that->fColorArrayType) {
return CombineResult::kCannotCombine;
}
if (fVertexCount + that->fVertexCount > SkTo<int>(UINT16_MAX)) {
return CombineResult::kCannotCombine;
}
// NOTE: For SkColor vertex colors, the source color space is always sRGB, and the destination
// gamut is determined by the render target context. A mis-match should be impossible.
SkASSERT(GrColorSpaceXform::Equals(fColorSpaceXform.get(), that->fColorSpaceXform.get()));
// If either op required explicit local coords or per-vertex colors the combined mesh does. Same
// with multiple view matrices.
fFlags |= that->fFlags;
if (!this->requiresPerVertexColors() && this->fMeshes[0].fColor != that->fMeshes[0].fColor) {
fFlags |= kRequiresPerVertexColors_Flag;
}
// Check whether we are about to acquire a mesh with a different view matrix.
if (!this->hasMultipleViewMatrices() &&
!this->fMeshes[0].fViewMatrix.cheapEqualTo(that->fMeshes[0].fViewMatrix)) {
fFlags |= kHasMultipleViewMatrices_Flag;
}
fMeshes.push_back_n(that->fMeshes.count(), that->fMeshes.begin());
fVertexCount += that->fVertexCount;
fIndexCount += that->fIndexCount;
this->joinBounds(*that);
return CombineResult::kMerged;
}
