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draw vertices: use SkVM for simple triangles

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If there are no color or texture changes between triangles,
then us SkVM to draw the triangles.

Change-Id: I2b1af743b36c681db23045c9f398c305894ead91
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/425020
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Herb Derby <herb@google.com>
This commit is contained in:
Herb Derby 2021-07-07 12:35:46 -04:00 committed by Skia Commit-Bot
parent b62a2934f2
commit e822837a13
1 changed files with 14 additions and 3 deletions
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17
src/core/SkDraw_vertices.cpp
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@ -303,6 +303,20 @@ void SkDraw::drawFixedVertices(const SkVertices* vertices, SkBlendMode blendMode
// There is a paintShader iff there is texCoords.
SkASSERT((textures != nullptr) == (shader != nullptr));
VertState state(vertexCount, indices, indexCount);
VertState::Proc vertProc = state.chooseProc(info.mode());
// No colors are changing and no texture coordinates are changing, so no updates between
// triangles are needed. Use SkVM to blit the triangles.
if (!colors && (!textures || textures == positions)) {
if (auto blitter = SkCreateSkVMBlitter(
fDst, paint, *fMatrixProvider, outerAlloc, this->fRC->clipShader())) {
while (vertProc(&state)) {
fill_triangle(state, blitter, *fRC, dev2, dev3);
}
return;
}
}
/* We need to know if we have perspective or not, so we can know what stage(s) we will need,
and how to prep our "uniforms" before each triangle in the tricolorshader.
@ -314,9 +328,6 @@ void SkDraw::drawFixedVertices(const SkVertices* vertices, SkBlendMode blendMode
SkMatrix ctm = fMatrixProvider->localToDevice();
const bool usePerspective = ctm.hasPerspective();
VertState state(vertexCount, indices, indexCount);
VertState::Proc vertProc = state.chooseProc(info.mode());
SkTriColorShader* triShader = nullptr;
SkPMColor4f* dstColors = nullptr;