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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// This test only works with the GPU backend.
#include "gm.h"
#if SK_SUPPORT_GPU
#include "GrDrawContextPriv.h"
#include "GrContext.h"
#include "SkBitmap.h"
#include "SkGr.h"
#include "SkGradientShader.h"
#include "batches/GrDrawBatch.h"
#include "batches/GrRectBatchFactory.h"
#include "effects/GrTextureDomain.h"
namespace skiagm {
/**
* This GM directly exercises GrTextureDomainEffect.
*/
class TextureDomainEffect : public GM {
public:
TextureDomainEffect() {
this->setBGColor(0xFFFFFFFF);
}
protected:
SkString onShortName() override {
return SkString("texture_domain_effect");
}
SkISize onISize() override {
const SkScalar canvasWidth = kDrawPad +
(kTargetWidth + 2 * kDrawPad) * GrTextureDomain::kModeCount +
kTestPad * GrTextureDomain::kModeCount;
return SkISize::Make(SkScalarCeilToInt(canvasWidth), 800);
}
void onOnceBeforeDraw() override {
fBmp.allocN32Pixels(kTargetWidth, kTargetHeight);
SkCanvas canvas(fBmp);
canvas.clear(0x00000000);
SkPaint paint;
SkColor colors1[] = { SK_ColorCYAN, SK_ColorLTGRAY, SK_ColorGRAY };
paint.setShader(SkGradientShader::MakeSweep(65.f, 75.f, colors1, nullptr,
SK_ARRAY_COUNT(colors1)));
canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, fBmp.width() + 10.f, fBmp.height() + 10.f),
paint);
SkColor colors2[] = { SK_ColorMAGENTA, SK_ColorLTGRAY, SK_ColorYELLOW };
paint.setShader(SkGradientShader::MakeSweep(45.f, 55.f, colors2, nullptr,
SK_ARRAY_COUNT(colors2)));
paint.setBlendMode(SkBlendMode::kDarken);
canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, fBmp.width() + 10.f, fBmp.height() + 10.f),
paint);
SkColor colors3[] = { SK_ColorBLUE, SK_ColorLTGRAY, SK_ColorGREEN };
paint.setShader(SkGradientShader::MakeSweep(25.f, 35.f, colors3, nullptr,
SK_ARRAY_COUNT(colors3)));
paint.setBlendMode(SkBlendMode::kLighten);
canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, fBmp.width() + 10.f, fBmp.height() + 10.f),
paint);
}
void onDraw(SkCanvas* canvas) override {
GrDrawContext* drawContext = canvas->internal_private_accessTopLayerDrawContext();
if (!drawContext) {
skiagm::GM::DrawGpuOnlyMessage(canvas);
return;
}
GrContext* context = canvas->getGrContext();
if (!context) {
return;
}
SkAutoTUnref<GrTexture> texture(GrRefCachedBitmapTexture(context, fBmp,
GrTextureParams::ClampNoFilter(),
SkSourceGammaTreatment::kRespect));
if (!texture) {
return;
}
SkTArray<SkMatrix> textureMatrices;
textureMatrices.push_back().setIDiv(texture->width(), texture->height());
textureMatrices.push_back() = textureMatrices[0];
textureMatrices.back().postScale(1.5f, 0.85f);
textureMatrices.push_back() = textureMatrices[0];
textureMatrices.back().preRotate(45.f, texture->width() / 2.f, texture->height() / 2.f);
const SkIRect texelDomains[] = {
fBmp.bounds(),
SkIRect::MakeXYWH(fBmp.width() / 4,
fBmp.height() / 4,
fBmp.width() / 2,
fBmp.height() / 2),
};
SkRect renderRect = SkRect::Make(fBmp.bounds());
renderRect.outset(kDrawPad, kDrawPad);
SkScalar y = kDrawPad + kTestPad;
for (int tm = 0; tm < textureMatrices.count(); ++tm) {
for (size_t d = 0; d < SK_ARRAY_COUNT(texelDomains); ++d) {
SkScalar x = kDrawPad + kTestPad;
for (int m = 0; m < GrTextureDomain::kModeCount; ++m) {
GrTextureDomain::Mode mode = (GrTextureDomain::Mode) m;
GrPaint grPaint;
grPaint.setXPFactory(GrPorterDuffXPFactory::Make(SkXfermode::kSrc_Mode));
sk_sp<GrFragmentProcessor> fp(
GrTextureDomainEffect::Make(texture, nullptr, textureMatrices[tm],
GrTextureDomain::MakeTexelDomain(texture,
texelDomains[d]),
mode, GrTextureParams::kNone_FilterMode));
if (!fp) {
continue;
}
const SkMatrix viewMatrix = SkMatrix::MakeTrans(x, y);
grPaint.addColorFragmentProcessor(std::move(fp));
SkAutoTUnref<GrDrawBatch> batch(
GrRectBatchFactory::CreateNonAAFill(GrColor_WHITE, viewMatrix,
renderRect, nullptr, nullptr));
drawContext->drawContextPriv().testingOnly_drawBatch(grPaint, batch);
x += renderRect.width() + kTestPad;
}
y += renderRect.height() + kTestPad;
}
}
}
private:
static constexpr SkScalar kDrawPad = 10.f;
static constexpr SkScalar kTestPad = 10.f;;
static constexpr int kTargetWidth = 100;
static constexpr int kTargetHeight = 100;
SkBitmap fBmp;
typedef GM INHERITED;
};
DEF_GM(return new TextureDomainEffect;)
}
#endif
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