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Use raster pipeline for repeat/mirror radial gradients

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(reland of https://skia-review.googlesource.com/c/24283/)

The legacy clamp specialization is still faster, but for repeat and
mirror RP wins (at low color stop counts).

Change-Id: I97a77188e912239f31e94600021b469ce7c40797
Reviewed-on: https://skia-review.googlesource.com/24742
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
This commit is contained in:
Florin Malita 2017-07-20 13:59:39 -04:00 committed by Skia Commit-Bot
parent fe40abc14b
commit 2371da0731
2 changed files with 18 additions and 3 deletions
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15
src/shaders/gradients/SkRadialGradient.cpp
View File

@ -48,7 +48,11 @@ SkShaderBase::Context* SkRadialGradient::onMakeContext(
SkRadialGradient::RadialGradientContext::RadialGradientContext(
const SkRadialGradient& shader, const ContextRec& rec)
: INHERITED(shader, rec) {}
: INHERITED(shader, rec) {
#ifndef SK_SUPPORT_LEGACY_RADIAL_GRADIENT
SkASSERT(shader.getTileMode() == SkShader::kClamp_TileMode);
#endif
}
SkShader::GradientType SkRadialGradient::asAGradient(GradientInfo* info) const {
if (info) {
@ -359,6 +363,15 @@ sk_sp<SkShader> SkRadialGradient::onMakeColorSpace(SkColorSpaceXformer* xformer)
&this->getLocalMatrix());
}
bool SkRadialGradient::onIsRasterPipelineOnly() const {
#ifdef SK_SUPPORT_LEGACY_RADIAL_GRADIENT
return false;
#else
// We have a clamp fast path; everything else -> RP.
return fTileMode != SkShader::kClamp_TileMode;
#endif
}
bool SkRadialGradient::adjustMatrixAndAppendStages(SkArenaAlloc* alloc,
SkMatrix* matrix,
SkRasterPipeline* p,

6
src/shaders/gradients/SkRadialGradient.h
View File

@ -10,7 +10,7 @@
#include "SkGradientShaderPriv.h"
class SkRadialGradient : public SkGradientShaderBase {
class SkRadialGradient final : public SkGradientShaderBase {
public:
SkRadialGradient(const SkPoint& center, SkScalar radius, const Descriptor&);
@ -41,7 +41,9 @@ protected:
bool adjustMatrixAndAppendStages(SkArenaAlloc* alloc,
SkMatrix* matrix,
SkRasterPipeline* tPipeline,
SkRasterPipeline* postPipeline) const final;
SkRasterPipeline* postPipeline) const override;
bool onIsRasterPipelineOnly() const override;
private:
const SkPoint fCenter;