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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 GrMagnifierEffect.fp; do not modify.
**************************************************************************************************/
#include "GrMagnifierEffect.h"
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLProgramBuilder.h"
#include "GrTexture.h"
#include "SkSLCPP.h"
#include "SkSLUtil.h"
class GrGLSLMagnifierEffect : public GrGLSLFragmentProcessor {
public:
GrGLSLMagnifierEffect() {}
void emitCode(EmitArgs& args) override {
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
const GrMagnifierEffect& _outer = args.fFp.cast<GrMagnifierEffect>();
(void)_outer;
auto bounds = _outer.bounds();
(void)bounds;
auto srcRect = _outer.srcRect();
(void)srcRect;
auto xInvZoom = _outer.xInvZoom();
(void)xInvZoom;
auto yInvZoom = _outer.yInvZoom();
(void)yInvZoom;
auto xInvInset = _outer.xInvInset();
(void)xInvInset;
auto yInvInset = _outer.yInvInset();
(void)yInvInset;
fBoundsUniformVar = args.fUniformHandler->addUniform(
kFragment_GrShaderFlag, kFloat4_GrSLType, kDefault_GrSLPrecision, "boundsUniform");
fXInvZoomVar = args.fUniformHandler->addUniform(
kFragment_GrShaderFlag, kFloat_GrSLType, kDefault_GrSLPrecision, "xInvZoom");
fYInvZoomVar = args.fUniformHandler->addUniform(
kFragment_GrShaderFlag, kFloat_GrSLType, kDefault_GrSLPrecision, "yInvZoom");
fXInvInsetVar = args.fUniformHandler->addUniform(
kFragment_GrShaderFlag, kFloat_GrSLType, kDefault_GrSLPrecision, "xInvInset");
fYInvInsetVar = args.fUniformHandler->addUniform(
kFragment_GrShaderFlag, kFloat_GrSLType, kDefault_GrSLPrecision, "yInvInset");
fOffsetVar = args.fUniformHandler->addUniform(
kFragment_GrShaderFlag, kHalf2_GrSLType, kDefault_GrSLPrecision, "offset");
SkString sk_TransformedCoords2D_0 = fragBuilder->ensureCoords2D(args.fTransformedCoords[0]);
fragBuilder->codeAppendf(
"float2 coord = %s;\nfloat2 zoom_coord = float2(%s + half2(coord * "
"float2(half2(half(%s), half(%s)))));\nfloat2 delta = (coord - %s.xy) * "
"%s.zw;\ndelta = min(delta, float2(half2(1.0, 1.0) - half2(delta)));\ndelta *= "
"float2(half2(half(%s), half(%s)));\nhalf weight = 0.0;\nif (delta.x < 2.0 && "
"delta.y < 2.0) {\n delta = float2(half2(2.0, 2.0) - half2(delta));\n half "
"dist = half(length(delta));\n dist = half(max(2.0 - float(dist), 0.0));\n "
"weight = half(min(float(dist * dist), 1.0));\n} else {\n ",
sk_TransformedCoords2D_0.c_str(),
args.fUniformHandler->getUniformCStr(fOffsetVar),
args.fUniformHandler->getUniformCStr(fXInvZoomVar),
args.fUniformHandler->getUniformCStr(fYInvZoomVar),
args.fUniformHandler->getUniformCStr(fBoundsUniformVar),
args.fUniformHandler->getUniformCStr(fBoundsUniformVar),
args.fUniformHandler->getUniformCStr(fXInvInsetVar),
args.fUniformHandler->getUniformCStr(fYInvInsetVar));
fragBuilder->codeAppendf(
"float2 delta_squared = delta * delta;\n weight = half(min(min(delta_squared.x, "
"delta_squared.y), 1.0));\n}\n%s = texture(%s, mix(coord, zoom_coord, "
"float(weight))).%s;\n",
args.fOutputColor,
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 GrMagnifierEffect& _outer = _proc.cast<GrMagnifierEffect>();
{
pdman.set1f(fXInvZoomVar, _outer.xInvZoom());
pdman.set1f(fYInvZoomVar, _outer.yInvZoom());
pdman.set1f(fXInvInsetVar, _outer.xInvInset());
pdman.set1f(fYInvInsetVar, _outer.yInvInset());
}
GrSurfaceProxy& srcProxy = *_outer.textureSampler(0).proxy();
GrTexture& src = *srcProxy.priv().peekTexture();
(void)src;
auto bounds = _outer.bounds();
(void)bounds;
UniformHandle& boundsUniform = fBoundsUniformVar;
(void)boundsUniform;
auto srcRect = _outer.srcRect();
(void)srcRect;
UniformHandle& xInvZoom = fXInvZoomVar;
(void)xInvZoom;
UniformHandle& yInvZoom = fYInvZoomVar;
(void)yInvZoom;
UniformHandle& xInvInset = fXInvInsetVar;
(void)xInvInset;
UniformHandle& yInvInset = fYInvInsetVar;
(void)yInvInset;
UniformHandle& offset = fOffsetVar;
(void)offset;
SkScalar invW = 1.0f / src.width();
SkScalar invH = 1.0f / src.height();
{
SkScalar y = srcRect.y() * invH;
if (srcProxy.origin() != kTopLeft_GrSurfaceOrigin) {
y = 1.0f - (srcRect.height() / bounds.height()) - y;
}
pdman.set2f(offset, srcRect.x() * invW, y);
}
{
SkScalar y = bounds.y() * invH;
if (srcProxy.origin() != kTopLeft_GrSurfaceOrigin) {
y = 1.0f - bounds.height() * invH;
}
pdman.set4f(boundsUniform,
bounds.x() * invW,
y,
SkIntToScalar(src.width()) / bounds.width(),
SkIntToScalar(src.height()) / bounds.height());
}
}
UniformHandle fBoundsUniformVar;
UniformHandle fOffsetVar;
UniformHandle fXInvZoomVar;
UniformHandle fYInvZoomVar;
UniformHandle fXInvInsetVar;
UniformHandle fYInvInsetVar;
};
GrGLSLFragmentProcessor* GrMagnifierEffect::onCreateGLSLInstance() const {
return new GrGLSLMagnifierEffect();
}
void GrMagnifierEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
GrProcessorKeyBuilder* b) const {}
bool GrMagnifierEffect::onIsEqual(const GrFragmentProcessor& other) const {
const GrMagnifierEffect& that = other.cast<GrMagnifierEffect>();
(void)that;
if (fSrc != that.fSrc) return false;
if (fBounds != that.fBounds) return false;
if (fSrcRect != that.fSrcRect) return false;
if (fXInvZoom != that.fXInvZoom) return false;
if (fYInvZoom != that.fYInvZoom) return false;
if (fXInvInset != that.fXInvInset) return false;
if (fYInvInset != that.fYInvInset) return false;
return true;
}
GrMagnifierEffect::GrMagnifierEffect(const GrMagnifierEffect& src)
: INHERITED(kGrMagnifierEffect_ClassID, src.optimizationFlags())
, fSrc(src.fSrc)
, fBounds(src.fBounds)
, fSrcRect(src.fSrcRect)
, fXInvZoom(src.fXInvZoom)
, fYInvZoom(src.fYInvZoom)
, fXInvInset(src.fXInvInset)
, fYInvInset(src.fYInvInset)
, fSrcCoordTransform(src.fSrcCoordTransform) {
this->addTextureSampler(&fSrc);
this->addCoordTransform(&fSrcCoordTransform);
}
std::unique_ptr<GrFragmentProcessor> GrMagnifierEffect::clone() const {
return std::unique_ptr<GrFragmentProcessor>(new GrMagnifierEffect(*this));
}
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrMagnifierEffect);
#if GR_TEST_UTILS
std::unique_ptr<GrFragmentProcessor> GrMagnifierEffect::TestCreate(GrProcessorTestData* d) {
sk_sp<GrTextureProxy> proxy = d->textureProxy(0);
const int kMaxWidth = 200;
const int kMaxHeight = 200;
const SkScalar kMaxInset = 20.0f;
uint32_t width = d->fRandom->nextULessThan(kMaxWidth);
uint32_t height = d->fRandom->nextULessThan(kMaxHeight);
SkScalar inset = d->fRandom->nextRangeScalar(1.0f, kMaxInset);
SkIRect bounds = SkIRect::MakeWH(SkIntToScalar(kMaxWidth), SkIntToScalar(kMaxHeight));
SkRect srcRect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
auto effect = GrMagnifierEffect::Make(std::move(proxy),
bounds,
srcRect,
srcRect.width() / bounds.width(),
srcRect.height() / bounds.height(),
bounds.width() / inset,
bounds.height() / inset);
SkASSERT(effect);
return effect;
}
#endif
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