| /* |
| * 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/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/private/base/SkTArray.h" |
| #include "src/core/SkCanvasPriv.h" |
| #include "src/gpu/ganesh/GrCaps.h" |
| #include "src/gpu/ganesh/GrDirectContextPriv.h" |
| #include "src/gpu/ganesh/GrProxyProvider.h" |
| #include "src/gpu/ganesh/GrSamplerState.h" |
| #include "src/gpu/ganesh/SkGr.h" |
| #include "src/gpu/ganesh/SurfaceDrawContext.h" |
| #include "src/gpu/ganesh/effects/GrTextureEffect.h" |
| #include "tools/Resources.h" |
| #include "tools/gpu/TestOps.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| using MipmapMode = GrSamplerState::MipmapMode; |
| using Filter = GrSamplerState::Filter; |
| using Wrap = GrSamplerState::WrapMode; |
| |
| namespace skiagm { |
| /** |
| * This GM directly exercises GrTextureEffect::MakeTexelSubset. |
| */ |
| class TexelSubset : public GpuGM { |
| public: |
| TexelSubset(Filter filter, MipmapMode mm, bool upscale) |
| : fFilter(filter), fMipmapMode(mm), fUpscale(upscale) { |
| this->setBGColor(0xFFFFFFFF); |
| } |
| |
| protected: |
| SkString onShortName() override { |
| SkString name("texel_subset"); |
| switch (fFilter) { |
| case Filter::kNearest: |
| name.append("_nearest"); |
| break; |
| case Filter::kLinear: |
| name.append("_linear"); |
| break; |
| } |
| switch (fMipmapMode) { |
| case MipmapMode::kNone: |
| break; |
| case MipmapMode::kNearest: |
| name.append("_mipmap_nearest"); |
| break; |
| case MipmapMode::kLinear: |
| name.append("_mipmap_linear"); |
| break; |
| } |
| name.append(fUpscale ? "_up" : "_down"); |
| return name; |
| } |
| |
| SkISize onISize() override { |
| static constexpr int kN = GrSamplerState::kWrapModeCount; |
| int w = kTestPad + 2*kN*(kImageSize.width() + 2*kDrawPad + kTestPad); |
| int h = kTestPad + 2*kN*(kImageSize.height() + 2*kDrawPad + kTestPad); |
| return {w, h}; |
| } |
| |
| void onOnceBeforeDraw() override { |
| GetResourceAsBitmap("images/mandrill_128.png", &fBitmap); |
| // Make the bitmap non-square to detect any width/height confusion. |
| fBitmap.extractSubset(&fBitmap, SkIRect::MakeSize(fBitmap.dimensions()).makeInset(0, 20)); |
| SkASSERT(fBitmap.dimensions() == kImageSize); |
| } |
| |
| DrawResult onDraw(GrRecordingContext* rContext, SkCanvas* canvas, SkString* errorMsg) override { |
| auto sdc = SkCanvasPriv::TopDeviceSurfaceDrawContext(canvas); |
| if (!sdc) { |
| *errorMsg = kErrorMsg_DrawSkippedGpuOnly; |
| return DrawResult::kSkip; |
| } |
| |
| GrMipmapped mipmapped = (fMipmapMode != MipmapMode::kNone) ? GrMipmapped::kYes |
| : GrMipmapped::kNo; |
| if (mipmapped == GrMipmapped::kYes && !rContext->priv().caps()->mipmapSupport()) { |
| return DrawResult::kSkip; |
| } |
| auto view = std::get<0>(GrMakeCachedBitmapProxyView( |
| rContext, fBitmap, /*label=*/"DrawResult_Draw_BitMap", mipmapped)); |
| if (!view) { |
| *errorMsg = "Failed to create proxy."; |
| return DrawResult::kFail; |
| } |
| |
| SkIRect texelSubset; |
| // Use a smaller subset when upscaling so that wrap is hit on all sides of the rect we |
| // will draw. |
| if (fUpscale) { |
| texelSubset = SkIRect::MakeXYWH(fBitmap.width()/3 - 1, 2*fBitmap.height()/5 - 1, |
| fBitmap.width()/4 + 2, fBitmap.height()/5 + 2); |
| } else { |
| texelSubset = SkIRect::MakeXYWH( fBitmap.width()/8 - 1, fBitmap.height()/7 - 1, |
| 3*fBitmap.width()/5 + 2, 4*fBitmap.height()/5 + 2); |
| } |
| |
| SkTArray<SkMatrix> textureMatrices; |
| |
| SkRect a = SkRect::Make(texelSubset); |
| SkRect b = fUpscale ? a.makeInset (.31f * a.width(), .31f * a.height()) |
| : a.makeOutset(.25f * a.width(), .25f * a.height()); |
| textureMatrices.push_back() = SkMatrix::RectToRect(a, b); |
| |
| b = fUpscale ? a.makeInset (.25f * a.width(), .35f * a.height()) |
| : a.makeOutset(.20f * a.width(), .35f * a.height()); |
| textureMatrices.push_back() = SkMatrix::RectToRect(a, b); |
| textureMatrices.back().preRotate(45.f, a.centerX(), a.centerY()); |
| textureMatrices.back().postSkew(.05f, -.05f); |
| |
| SkBitmap subsetBmp; |
| fBitmap.extractSubset(&subsetBmp, texelSubset); |
| subsetBmp.setImmutable(); |
| auto subsetView = std::get<0>(GrMakeCachedBitmapProxyView( |
| rContext, subsetBmp, /*label=*/"DrawResult_Draw_SubsetBitMap", mipmapped)); |
| |
| SkRect localRect = SkRect::Make(fBitmap.bounds()).makeOutset(kDrawPad, kDrawPad); |
| |
| auto size = this->onISize(); |
| |
| SkScalar y = kDrawPad + kTestPad; |
| SkRect drawRect; |
| for (int tm = 0; tm < textureMatrices.size(); ++tm) { |
| for (int my = 0; my < GrSamplerState::kWrapModeCount; ++my) { |
| SkScalar x = kDrawPad + kTestPad; |
| auto wmy = static_cast<Wrap>(my); |
| for (int mx = 0; mx < GrSamplerState::kWrapModeCount; ++mx) { |
| auto wmx = static_cast<Wrap>(mx); |
| |
| const auto& caps = *rContext->priv().caps(); |
| |
| GrSamplerState sampler(wmx, wmy, fFilter, fMipmapMode); |
| |
| drawRect = localRect.makeOffset(x, y); |
| |
| std::unique_ptr<GrFragmentProcessor> fp1; |
| fp1 = GrTextureEffect::MakeSubset(view, |
| fBitmap.alphaType(), |
| textureMatrices[tm], |
| sampler, |
| SkRect::Make(texelSubset), |
| caps); |
| if (!fp1) { |
| continue; |
| } |
| |
| // Throw a translate in the local matrix just to test having something other |
| // than identity. Compensate with an offset local rect. |
| static constexpr SkVector kT = {-100, 300}; |
| if (auto op = sk_gpu_test::test_ops::MakeRect(rContext, |
| std::move(fp1), |
| drawRect, |
| localRect.makeOffset(kT), |
| SkMatrix::Translate(-kT))) { |
| sdc->addDrawOp(std::move(op)); |
| } |
| |
| x += localRect.width() + kTestPad; |
| |
| // Now draw with a subsetted proxy using fixed function texture sampling |
| // rather than a texture subset as a comparison. |
| drawRect = localRect.makeOffset(x, y); |
| SkMatrix subsetTextureMatrix = SkMatrix::Concat( |
| SkMatrix::Translate(-texelSubset.topLeft()), textureMatrices[tm]); |
| |
| auto fp2 = GrTextureEffect::Make(subsetView, |
| fBitmap.alphaType(), |
| subsetTextureMatrix, |
| sampler, |
| caps); |
| if (auto op = sk_gpu_test::test_ops::MakeRect(rContext, std::move(fp2), |
| drawRect, localRect)) { |
| sdc->addDrawOp(std::move(op)); |
| } |
| |
| if (mx < GrSamplerState::kWrapModeCount - 1) { |
| SkScalar midX = |
| SkScalarFloorToScalar(drawRect.right() + kTestPad/2.f) + 0.5f; |
| canvas->drawLine({midX, -1}, {midX, (float)size.fHeight+1}, {}); |
| } |
| x += localRect.width() + kTestPad; |
| } |
| if (my < GrSamplerState::kWrapModeCount - 1) { |
| SkScalar midY = SkScalarFloorToScalar(drawRect.bottom() + kTestPad/2.f) + 0.5f; |
| canvas->drawLine({-1, midY}, {(float)size.fWidth+1, midY}, {}); |
| } |
| y += localRect.height() + kTestPad; |
| } |
| if (tm < textureMatrices.size() - 1) { |
| SkPaint paint; |
| paint.setColor(SK_ColorRED); |
| SkScalar midY = SkScalarFloorToScalar(drawRect.bottom() + kTestPad/2.f) + 0.5f; |
| canvas->drawLine({-1, midY}, {(float)size.fWidth + 1, midY}, paint); |
| } |
| } |
| return DrawResult::kOk; |
| } |
| |
| private: |
| inline static constexpr SkISize kImageSize = {128, 88}; |
| inline static constexpr SkScalar kDrawPad = 10.f; |
| inline static constexpr SkScalar kTestPad = 10.f; |
| SkBitmap fBitmap; |
| Filter fFilter; |
| MipmapMode fMipmapMode; |
| bool fUpscale; |
| |
| using INHERITED = GM; |
| }; |
| |
| DEF_GM(return new TexelSubset(Filter::kNearest, MipmapMode::kNone , false);) |
| DEF_GM(return new TexelSubset(Filter::kNearest, MipmapMode::kNone , true );) |
| DEF_GM(return new TexelSubset(Filter::kLinear , MipmapMode::kNone , false);) |
| DEF_GM(return new TexelSubset(Filter::kLinear , MipmapMode::kNone , true );) |
| // It doesn't make sense to have upscaling MIP map. |
| DEF_GM(return new TexelSubset(Filter::kNearest, MipmapMode::kNearest, false);) |
| DEF_GM(return new TexelSubset(Filter::kLinear , MipmapMode::kNearest, false);) |
| DEF_GM(return new TexelSubset(Filter::kNearest, MipmapMode::kLinear , false);) |
| DEF_GM(return new TexelSubset(Filter::kLinear , MipmapMode::kLinear , false);) |
| |
| } // namespace skiagm |