blob: d12ee6c87c574a15bf6983486f93ac53cf853c51 [file] [log] [blame]
/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
in half4x4 gradientMatrix;
@coordTransform {
gradientMatrix
}
void main() {
half t = half(sk_TransformedCoords2D[0].x);
sk_OutColor = half4(t, 1, 0, 0); // y = 1 for always valid
}
//////////////////////////////////////////////////////////////////////////////
@header {
#include "SkLinearGradient.h"
#include "GrGradientShader.h"
}
// The linear gradient never rejects a pixel so it doesn't change opacity
@optimizationFlags {
kPreservesOpaqueInput_OptimizationFlag
}
@make {
static std::unique_ptr<GrFragmentProcessor> Make(const SkLinearGradient& gradient,
const GrFPArgs& args);
}
@cppEnd {
std::unique_ptr<GrFragmentProcessor> GrLinearGradientLayout::Make(
const SkLinearGradient& grad, const GrFPArgs& args) {
SkMatrix matrix;
if (!grad.totalLocalMatrix(args.fPreLocalMatrix, args.fPostLocalMatrix)->invert(&matrix)) {
return nullptr;
}
matrix.postConcat(grad.getGradientMatrix());
return std::unique_ptr<GrFragmentProcessor>(new GrLinearGradientLayout(matrix));
}
}
//////////////////////////////////////////////////////////////////////////////
@test(d) {
SkScalar scale = GrGradientShader::RandomParams::kGradientScale;
SkPoint points[] = {{d->fRandom->nextRangeScalar(0.0f, scale),
d->fRandom->nextRangeScalar(0.0f, scale)},
{d->fRandom->nextRangeScalar(0.0f, scale),
d->fRandom->nextRangeScalar(0.0f, scale)}};
GrGradientShader::RandomParams params(d->fRandom);
auto shader = params.fUseColors4f ?
SkGradientShader::MakeLinear(points, params.fColors4f, params.fColorSpace, params.fStops,
params.fColorCount, params.fTileMode) :
SkGradientShader::MakeLinear(points, params.fColors, params.fStops,
params.fColorCount, params.fTileMode);
GrTest::TestAsFPArgs asFPArgs(d);
std::unique_ptr<GrFragmentProcessor> fp = as_SB(shader)->asFragmentProcessor(asFPArgs.args());
GrAlwaysAssert(fp);
return fp;
}