/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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// This test only works with the GPU backend.
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#include "gm.h"
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#include "GrContext.h"
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#include "GrContextPriv.h"
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#include "GrProxyProvider.h"
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#include "GrRenderTargetContextPriv.h"
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#include "SkGradientShader.h"
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#include "SkImage.h"
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#include "SkImage_Base.h"
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#include "SkSurface.h"
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#include "effects/GrTextureDomain.h"
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#include "ops/GrDrawOp.h"
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#include "ops/GrFillRectOp.h"
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namespace skiagm {
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/**
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* This GM directly exercises GrTextureDomainEffect.
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*/
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class TextureDomainEffect : public GM {
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public:
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TextureDomainEffect(GrSamplerState::Filter filter)
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: fFilter(filter) {
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this->setBGColor(0xFFFFFFFF);
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}
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protected:
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SkString onShortName() override {
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SkString name("texture_domain_effect");
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if (fFilter == GrSamplerState::Filter::kBilerp) {
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name.append("_bilerp");
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} else if (fFilter == GrSamplerState::Filter::kMipMap) {
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name.append("_mipmap");
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}
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return name;
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}
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SkISize onISize() override {
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const SkScalar canvasWidth = kDrawPad +
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(kTargetWidth + 2 * kDrawPad) * GrTextureDomain::kModeCount +
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kTestPad * GrTextureDomain::kModeCount;
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return SkISize::Make(SkScalarCeilToInt(canvasWidth), 800);
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}
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void onOnceBeforeDraw() override {
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// TODO: do this with gpu backend
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SkImageInfo ii = SkImageInfo::Make(kTargetWidth, kTargetHeight, kN32_SkColorType,
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kPremul_SkAlphaType);
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auto surface = SkSurface::MakeRaster(ii);
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SkCanvas* canvas = surface->getCanvas();
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canvas->clear(0x00000000);
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SkPaint paint;
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SkColor colors1[] = { SK_ColorCYAN, SK_ColorLTGRAY, SK_ColorGRAY };
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paint.setShader(SkGradientShader::MakeSweep(65.f, 75.f, colors1, nullptr,
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SK_ARRAY_COUNT(colors1)));
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canvas->drawOval(SkRect::MakeXYWH(-5.f, -5.f, kTargetWidth + 10.f, kTargetHeight + 10.f),
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paint);
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SkColor colors2[] = { SK_ColorMAGENTA, SK_ColorLTGRAY, SK_ColorYELLOW };
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paint.setShader(SkGradientShader::MakeSweep(45.f, 55.f, colors2, nullptr,
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SK_ARRAY_COUNT(colors2)));
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paint.setBlendMode(SkBlendMode::kDarken);
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canvas->drawOval(SkRect::MakeXYWH(-5.f, -5.f, kTargetWidth + 10.f, kTargetHeight + 10.f),
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paint);
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SkColor colors3[] = { SK_ColorBLUE, SK_ColorLTGRAY, SK_ColorGREEN };
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paint.setShader(SkGradientShader::MakeSweep(25.f, 35.f, colors3, nullptr,
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SK_ARRAY_COUNT(colors3)));
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paint.setBlendMode(SkBlendMode::kLighten);
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canvas->drawOval(SkRect::MakeXYWH(-5.f, -5.f, kTargetWidth + 10.f, kTargetHeight + 10.f),
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paint);
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fImage = surface->makeImageSnapshot();
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}
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void onDraw(SkCanvas* canvas) override {
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GrRenderTargetContext* renderTargetContext =
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canvas->internal_private_accessTopLayerRenderTargetContext();
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if (!renderTargetContext) {
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skiagm::GM::DrawGpuOnlyMessage(canvas);
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return;
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}
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GrContext* context = canvas->getGrContext();
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if (!context) {
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return;
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}
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GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider();
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sk_sp<GrTextureProxy> proxy;
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if (fFilter == GrSamplerState::Filter::kMipMap) {
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SkBitmap copy;
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SkImageInfo info = as_IB(fImage)->onImageInfo().makeColorType(kN32_SkColorType);
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if (!copy.tryAllocPixels(info) || !fImage->readPixels(copy.pixmap(), 0, 0)) {
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return;
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}
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proxy = proxyProvider->createMipMapProxyFromBitmap(copy);
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} else {
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proxy = proxyProvider->createTextureProxy(
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fImage, kNone_GrSurfaceFlags, 1, SkBudgeted::kYes, SkBackingFit::kExact);
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}
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if (!proxy) {
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return;
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}
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SkTArray<SkMatrix> textureMatrices;
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textureMatrices.push_back() = SkMatrix::I();
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textureMatrices.push_back() = SkMatrix::MakeScale(1.5f, 0.85f);
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textureMatrices.push_back();
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textureMatrices.back().setRotate(45.f, proxy->width() / 2.f, proxy->height() / 2.f);
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const SkIRect texelDomains[] = {
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fImage->bounds(),
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SkIRect::MakeXYWH(fImage->width() / 4 - 1, fImage->height() / 4 - 1,
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fImage->width() / 2 + 2, fImage->height() / 2 + 2),
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};
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SkRect renderRect = SkRect::Make(fImage->bounds());
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renderRect.outset(kDrawPad, kDrawPad);
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SkScalar y = kDrawPad + kTestPad;
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for (int tm = 0; tm < textureMatrices.count(); ++tm) {
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for (size_t d = 0; d < SK_ARRAY_COUNT(texelDomains); ++d) {
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SkScalar x = kDrawPad + kTestPad;
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for (int m = 0; m < GrTextureDomain::kModeCount; ++m) {
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GrTextureDomain::Mode mode = (GrTextureDomain::Mode) m;
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if (fFilter != GrSamplerState::Filter::kNearest &&
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mode == GrTextureDomain::kRepeat_Mode) {
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// Repeat mode doesn't produce correct results with bilerp filtering
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continue;
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}
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GrPaint grPaint;
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grPaint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
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auto fp = GrTextureDomainEffect::Make(
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proxy, textureMatrices[tm],
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GrTextureDomain::MakeTexelDomain(texelDomains[d], mode),
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mode, fFilter);
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if (!fp) {
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continue;
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}
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const SkMatrix viewMatrix = SkMatrix::MakeTrans(x, y);
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grPaint.addColorFragmentProcessor(std::move(fp));
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renderTargetContext->priv().testingOnly_addDrawOp(
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GrFillRectOp::Make(context, std::move(grPaint), GrAAType::kNone,
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viewMatrix, renderRect));
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x += renderRect.width() + kTestPad;
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}
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y += renderRect.height() + kTestPad;
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}
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}
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}
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private:
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static constexpr SkScalar kDrawPad = 10.f;
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static constexpr SkScalar kTestPad = 10.f;
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static constexpr int kTargetWidth = 100;
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static constexpr int kTargetHeight = 100;
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sk_sp<SkImage> fImage;
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GrSamplerState::Filter fFilter;
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typedef GM INHERITED;
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};
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DEF_GM(return new TextureDomainEffect(GrSamplerState::Filter::kNearest);)
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DEF_GM(return new TextureDomainEffect(GrSamplerState::Filter::kBilerp);)
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DEF_GM(return new TextureDomainEffect(GrSamplerState::Filter::kMipMap);)
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}
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