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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"
#include "GrContext.h"
#include "GrContextPriv.h"
#include "GrProxyProvider.h"
#include "GrRenderTargetContextPriv.h"
#include "SkGradientShader.h"
#include "SkImage.h"
#include "SkImage_Base.h"
#include "SkSurface.h"
#include "effects/GrTextureDomain.h"
#include "ops/GrDrawOp.h"
#include "ops/GrFillRectOp.h"
namespace skiagm {
/**
* This GM directly exercises GrTextureDomainEffect.
*/
class TextureDomainEffect : public GpuGM {
public:
TextureDomainEffect(GrSamplerState::Filter filter)
: fFilter(filter) {
this->setBGColor(0xFFFFFFFF);
}
protected:
SkString onShortName() override {
SkString name("texture_domain_effect");
if (fFilter == GrSamplerState::Filter::kBilerp) {
name.append("_bilerp");
} else if (fFilter == GrSamplerState::Filter::kMipMap) {
name.append("_mipmap");
}
return name;
}
SkISize onISize() override {
const SkScalar canvasWidth = kDrawPad +
(kTargetWidth + 2 * kDrawPad) * GrTextureDomain::kModeCount +
kTestPad * GrTextureDomain::kModeCount;
return SkISize::Make(SkScalarCeilToInt(canvasWidth), 800);
}
void onOnceBeforeDraw() override {
// TODO: do this with gpu backend
SkImageInfo ii = SkImageInfo::Make(kTargetWidth, kTargetHeight, kN32_SkColorType,
kPremul_SkAlphaType);
auto surface = SkSurface::MakeRaster(ii);
SkCanvas* canvas = surface->getCanvas();
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, kTargetWidth + 10.f, kTargetHeight + 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, kTargetWidth + 10.f, kTargetHeight + 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, kTargetWidth + 10.f, kTargetHeight + 10.f),
paint);
fImage = surface->makeImageSnapshot();
}
DrawResult onDraw(GrContext* context, GrRenderTargetContext* renderTargetContext,
SkCanvas* canvas, SkString* errorMsg) override {
GrProxyProvider* proxyProvider = context->priv().proxyProvider();
sk_sp<GrTextureProxy> proxy;
if (fFilter == GrSamplerState::Filter::kMipMap) {
SkBitmap copy;
SkImageInfo info = as_IB(fImage)->onImageInfo().makeColorType(kN32_SkColorType);
if (!copy.tryAllocPixels(info) || !fImage->readPixels(copy.pixmap(), 0, 0)) {
*errorMsg = "Failed to read pixels.";
return DrawResult::kFail;
}
proxy = proxyProvider->createMipMapProxyFromBitmap(copy);
} else {
proxy = proxyProvider->createTextureProxy(
fImage, kNone_GrSurfaceFlags, 1, SkBudgeted::kYes, SkBackingFit::kExact);
}
if (!proxy) {
*errorMsg = "Failed to create proxy.";
return DrawResult::kFail;
}
SkTArray<SkMatrix> textureMatrices;
textureMatrices.push_back() = SkMatrix::I();
textureMatrices.push_back() = SkMatrix::MakeScale(1.5f, 0.85f);
textureMatrices.push_back();
textureMatrices.back().setRotate(45.f, proxy->width() / 2.f, proxy->height() / 2.f);
const SkIRect texelDomains[] = {
fImage->bounds(),
SkIRect::MakeXYWH(fImage->width() / 4 - 1, fImage->height() / 4 - 1,
fImage->width() / 2 + 2, fImage->height() / 2 + 2),
};
SkRect renderRect = SkRect::Make(fImage->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;
if (fFilter != GrSamplerState::Filter::kNearest &&
mode == GrTextureDomain::kRepeat_Mode) {
// Repeat mode doesn't produce correct results with bilerp filtering
continue;
}
GrPaint grPaint;
grPaint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
auto fp = GrTextureDomainEffect::Make(
proxy, textureMatrices[tm],
GrTextureDomain::MakeTexelDomain(texelDomains[d], mode),
mode, fFilter);
if (!fp) {
continue;
}
const SkMatrix viewMatrix = SkMatrix::MakeTrans(x, y);
grPaint.addColorFragmentProcessor(std::move(fp));
renderTargetContext->priv().testingOnly_addDrawOp(
GrFillRectOp::Make(context, std::move(grPaint), GrAAType::kNone,
viewMatrix, renderRect));
x += renderRect.width() + kTestPad;
}
y += renderRect.height() + kTestPad;
}
}
return DrawResult::kOk;
}
private:
static constexpr SkScalar kDrawPad = 10.f;
static constexpr SkScalar kTestPad = 10.f;
static constexpr int kTargetWidth = 100;
static constexpr int kTargetHeight = 100;
sk_sp<SkImage> fImage;
GrSamplerState::Filter fFilter;
typedef GM INHERITED;
};
DEF_GM(return new TextureDomainEffect(GrSamplerState::Filter::kNearest);)
DEF_GM(return new TextureDomainEffect(GrSamplerState::Filter::kBilerp);)
DEF_GM(return new TextureDomainEffect(GrSamplerState::Filter::kMipMap);)
}