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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/**************************************************************************************************
*** This file was autogenerated from GrRRectBlurEffect.fp; do not modify.
**************************************************************************************************/
#include "GrRRectBlurEffect.h"
std::unique_ptr<GrFragmentProcessor> GrRRectBlurEffect::Make(GrContext* context, float sigma,
float xformedSigma,
const SkRRect& srcRRect,
const SkRRect& devRRect) {
SkASSERT(!SkRRectPriv::IsCircle(devRRect) &&
!devRRect.isRect()); // Should've been caught up-stream
// TODO: loosen this up
if (!SkRRectPriv::IsSimpleCircular(devRRect)) {
return nullptr;
}
// Make sure we can successfully ninepatch this rrect -- the blur sigma has to be
// sufficiently small relative to both the size of the corner radius and the
// width (and height) of the rrect.
SkRRect rrectToDraw;
SkISize size;
SkScalar ignored[kSkBlurRRectMaxDivisions];
int ignoredSize;
uint32_t ignored32;
bool ninePatchable = SkComputeBlurredRRectParams(
srcRRect, devRRect, SkRect::MakeEmpty(), sigma, xformedSigma, &rrectToDraw, &size,
ignored, ignored, ignored, ignored, &ignoredSize, &ignoredSize, &ignored32);
if (!ninePatchable) {
return nullptr;
}
sk_sp<GrTextureProxy> mask(
find_or_create_rrect_blur_mask(context, rrectToDraw, size, xformedSigma));
if (!mask) {
return nullptr;
}
return std::unique_ptr<GrFragmentProcessor>(
new GrRRectBlurEffect(xformedSigma, devRRect.getBounds(),
SkRRectPriv::GetSimpleRadii(devRRect).fX, std::move(mask)));
}
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLProgramBuilder.h"
#include "GrTexture.h"
#include "SkSLCPP.h"
#include "SkSLUtil.h"
class GrGLSLRRectBlurEffect : public GrGLSLFragmentProcessor {
public:
GrGLSLRRectBlurEffect() {}
void emitCode(EmitArgs& args) override {
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
const GrRRectBlurEffect& _outer = args.fFp.cast<GrRRectBlurEffect>();
(void)_outer;
auto sigma = _outer.sigma();
(void)sigma;
auto rect = _outer.rect();
(void)rect;
auto cornerRadius = _outer.cornerRadius();
(void)cornerRadius;
fCornerRadiusVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kFloat_GrSLType,
kDefault_GrSLPrecision, "cornerRadius");
fProxyRectVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kFloat4_GrSLType,
kDefault_GrSLPrecision, "proxyRect");
fBlurRadiusVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kHalf_GrSLType,
kDefault_GrSLPrecision, "blurRadius");
fragBuilder->codeAppendf(
"\nhalf2 translatedFragPos = half2(sk_FragCoord.xy - %s.xy);\nhalf threshold = "
"half(%s + 2.0 * float(%s));\nhalf2 middle = half2((%s.zw - %s.xy) - 2.0 * "
"float(threshold));\nif (translatedFragPos.x >= threshold && translatedFragPos.x < "
"middle.x + threshold) {\n translatedFragPos.x = threshold;\n} else if "
"(translatedFragPos.x >= middle.x + threshold) {\n translatedFragPos.x -= "
"float(middle.x) - 1.0;\n}\nif (translatedFragPos.y > threshold && "
"translatedFragPos.y < middle.y + threshold) {\n translatedFr",
args.fUniformHandler->getUniformCStr(fProxyRectVar),
args.fUniformHandler->getUniformCStr(fCornerRadiusVar),
args.fUniformHandler->getUniformCStr(fBlurRadiusVar),
args.fUniformHandler->getUniformCStr(fProxyRectVar),
args.fUniformHandler->getUniformCStr(fProxyRectVar));
fragBuilder->codeAppendf(
"agPos.y = threshold;\n} else if (translatedFragPos.y >= middle.y + threshold) {\n "
" translatedFragPos.y -= float(middle.y) - 1.0;\n}\nhalf2 proxyDims = "
"half2(half(2.0 * float(threshold) + 1.0));\nhalf2 texCoord = translatedFragPos / "
"proxyDims;\n%s = %s * texture(%s, float2(texCoord)).%s;\n",
args.fOutputColor, args.fInputColor ? args.fInputColor : "half4(1)",
fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]).c_str(),
fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str());
}
private:
void onSetData(const GrGLSLProgramDataManager& pdman,
const GrFragmentProcessor& _proc) override {
const GrRRectBlurEffect& _outer = _proc.cast<GrRRectBlurEffect>();
{ pdman.set1f(fCornerRadiusVar, _outer.cornerRadius()); }
auto sigma = _outer.sigma();
(void)sigma;
auto rect = _outer.rect();
(void)rect;
UniformHandle& cornerRadius = fCornerRadiusVar;
(void)cornerRadius;
GrSurfaceProxy& ninePatchSamplerProxy = *_outer.textureSampler(0).proxy();
GrTexture& ninePatchSampler = *ninePatchSamplerProxy.priv().peekTexture();
(void)ninePatchSampler;
UniformHandle& proxyRect = fProxyRectVar;
(void)proxyRect;
UniformHandle& blurRadius = fBlurRadiusVar;
(void)blurRadius;
float blurRadiusValue = 3.f * SkScalarCeilToScalar(sigma - 1 / 6.0f);
pdman.set1f(blurRadius, blurRadiusValue);
SkRect outset = rect;
outset.outset(blurRadiusValue, blurRadiusValue);
pdman.set4f(proxyRect, outset.fLeft, outset.fTop, outset.fRight, outset.fBottom);
}
UniformHandle fProxyRectVar;
UniformHandle fBlurRadiusVar;
UniformHandle fCornerRadiusVar;
};
GrGLSLFragmentProcessor* GrRRectBlurEffect::onCreateGLSLInstance() const {
return new GrGLSLRRectBlurEffect();
}
void GrRRectBlurEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
GrProcessorKeyBuilder* b) const {}
bool GrRRectBlurEffect::onIsEqual(const GrFragmentProcessor& other) const {
const GrRRectBlurEffect& that = other.cast<GrRRectBlurEffect>();
(void)that;
if (fSigma != that.fSigma) return false;
if (fRect != that.fRect) return false;
if (fCornerRadius != that.fCornerRadius) return false;
if (fNinePatchSampler != that.fNinePatchSampler) return false;
return true;
}
GrRRectBlurEffect::GrRRectBlurEffect(const GrRRectBlurEffect& src)
: INHERITED(kGrRRectBlurEffect_ClassID, src.optimizationFlags())
, fSigma(src.fSigma)
, fRect(src.fRect)
, fCornerRadius(src.fCornerRadius)
, fNinePatchSampler(src.fNinePatchSampler) {
this->addTextureSampler(&fNinePatchSampler);
}
std::unique_ptr<GrFragmentProcessor> GrRRectBlurEffect::clone() const {
return std::unique_ptr<GrFragmentProcessor>(new GrRRectBlurEffect(*this));
}
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRRectBlurEffect);
#if GR_TEST_UTILS
std::unique_ptr<GrFragmentProcessor> GrRRectBlurEffect::TestCreate(GrProcessorTestData* d) {
SkScalar w = d->fRandom->nextRangeScalar(100.f, 1000.f);
SkScalar h = d->fRandom->nextRangeScalar(100.f, 1000.f);
SkScalar r = d->fRandom->nextRangeF(1.f, 9.f);
SkScalar sigma = d->fRandom->nextRangeF(1.f, 10.f);
SkRRect rrect;
rrect.setRectXY(SkRect::MakeWH(w, h), r, r);
return GrRRectBlurEffect::Make(d->context(), sigma, sigma, rrect, rrect);
}
#endif
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