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Merge "Fix Canvas#drawVertices color blending when no shader is provided" into tm-qpr-dev

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This commit is contained in:
Nolan Scobie
2022-08-09 20:50:17 +00:00
committed by Android (Google) Code Review
parent 83d28ff707 a21bbb027a
commit 716c5618df
1 changed files with 21 additions and 7 deletions
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28
libs/hwui/jni/android_graphics_Canvas.cpp
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@@ -407,14 +407,28 @@ static void drawVertices(JNIEnv* env, jobject, jlong canvasHandle,
indices = (const uint16_t*)(indexA.ptr() + indexIndex);
}
SkVertices::VertexMode mode = static_cast<SkVertices::VertexMode>(modeHandle);
SkVertices::VertexMode vertexMode = static_cast<SkVertices::VertexMode>(modeHandle);
const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
get_canvas(canvasHandle)->drawVertices(SkVertices::MakeCopy(mode, vertexCount,
reinterpret_cast<const SkPoint*>(verts),
reinterpret_cast<const SkPoint*>(texs),
reinterpret_cast<const SkColor*>(colors),
indexCount, indices).get(),
SkBlendMode::kModulate, *paint);
// Preserve legacy Skia behavior: ignore the shader if there are no texs set.
Paint noShaderPaint;
if (jtexs == NULL) {
noShaderPaint = Paint(*paint);
noShaderPaint.setShader(nullptr);
paint = &noShaderPaint;
}
// Since https://skia-review.googlesource.com/c/skia/+/473676, Skia will blend paint and vertex
// colors when no shader is provided. This ternary uses kDst to mimic the old behavior of
// ignoring the paint and using the vertex colors directly when no shader is provided.
SkBlendMode blendMode = paint->getShader() ? SkBlendMode::kModulate : SkBlendMode::kDst;
get_canvas(canvasHandle)
->drawVertices(SkVertices::MakeCopy(
vertexMode, vertexCount, reinterpret_cast<const SkPoint*>(verts),
reinterpret_cast<const SkPoint*>(texs),
reinterpret_cast<const SkColor*>(colors), indexCount, indices)
.get(),
blendMode, *paint);
}
static void drawNinePatch(JNIEnv* env, jobject, jlong canvasHandle, jlong bitmapHandle,