| /* |
| * 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 "GrContext.h" |
| #include "GrDrawContextPriv.h" |
| #include "GrPipelineBuilder.h" |
| #include "SkBitmap.h" |
| #include "SkGr.h" |
| #include "SkGradientShader.h" |
| #include "batches/GrDrawBatch.h" |
| #include "batches/GrRectBatchFactory.h" |
| #include "effects/GrYUVEffect.h" |
| |
| #define YSIZE 8 |
| #define USIZE 4 |
| #define VSIZE 4 |
| |
| namespace skiagm { |
| /** |
| * This GM directly exercises GrYUVtoRGBEffect. |
| */ |
| class YUVtoRGBEffect : public GM { |
| public: |
| YUVtoRGBEffect() { |
| this->setBGColor(0xFFFFFFFF); |
| } |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("yuv_to_rgb_effect"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(238, 120); |
| } |
| |
| void onOnceBeforeDraw() override { |
| SkImageInfo yinfo = SkImageInfo::MakeA8(YSIZE, YSIZE); |
| fBmp[0].allocPixels(yinfo); |
| SkImageInfo uinfo = SkImageInfo::MakeA8(USIZE, USIZE); |
| fBmp[1].allocPixels(uinfo); |
| SkImageInfo vinfo = SkImageInfo::MakeA8(VSIZE, VSIZE); |
| fBmp[2].allocPixels(vinfo); |
| unsigned char* pixels[3]; |
| for (int i = 0; i < 3; ++i) { |
| pixels[i] = (unsigned char*)fBmp[i].getPixels(); |
| } |
| int color[] = {0, 85, 170}; |
| const int limit[] = {255, 0, 255}; |
| const int invl[] = {0, 255, 0}; |
| const int inc[] = {1, -1, 1}; |
| for (int i = 0; i < 3; ++i) { |
| const size_t nbBytes = fBmp[i].rowBytes() * fBmp[i].height(); |
| for (size_t j = 0; j < nbBytes; ++j) { |
| pixels[i][j] = (unsigned char)color[i]; |
| color[i] = (color[i] == limit[i]) ? invl[i] : color[i] + inc[i]; |
| } |
| } |
| } |
| |
| 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[3]; |
| texture[0].reset(GrRefCachedBitmapTexture(context, fBmp[0], |
| GrTextureParams::ClampBilerp())); |
| texture[1].reset(GrRefCachedBitmapTexture(context, fBmp[1], |
| GrTextureParams::ClampBilerp())); |
| texture[2].reset(GrRefCachedBitmapTexture(context, fBmp[2], |
| GrTextureParams::ClampBilerp())); |
| |
| if (!texture[0] || !texture[1] || !texture[2]) { |
| return; |
| } |
| |
| static const SkScalar kDrawPad = 10.f; |
| static const SkScalar kTestPad = 10.f; |
| static const SkScalar kColorSpaceOffset = 36.f; |
| SkISize sizes[3] = {{YSIZE, YSIZE}, {USIZE, USIZE}, {VSIZE, VSIZE}}; |
| |
| for (int space = kJPEG_SkYUVColorSpace; space <= kLastEnum_SkYUVColorSpace; |
| ++space) { |
| SkRect renderRect = SkRect::MakeWH(SkIntToScalar(fBmp[0].width()), |
| SkIntToScalar(fBmp[0].height())); |
| renderRect.outset(kDrawPad, kDrawPad); |
| |
| SkScalar y = kDrawPad + kTestPad + space * kColorSpaceOffset; |
| SkScalar x = kDrawPad + kTestPad; |
| |
| const int indices[6][3] = {{0, 1, 2}, {0, 2, 1}, {1, 0, 2}, |
| {1, 2, 0}, {2, 0, 1}, {2, 1, 0}}; |
| |
| for (int i = 0; i < 6; ++i) { |
| GrPipelineBuilder pipelineBuilder; |
| pipelineBuilder.setXPFactory( |
| GrPorterDuffXPFactory::Create(SkXfermode::kSrc_Mode))->unref(); |
| SkAutoTUnref<const GrFragmentProcessor> fp( |
| GrYUVEffect::CreateYUVToRGB(texture[indices[i][0]], |
| texture[indices[i][1]], |
| texture[indices[i][2]], |
| sizes, |
| static_cast<SkYUVColorSpace>(space))); |
| if (fp) { |
| SkMatrix viewMatrix; |
| viewMatrix.setTranslate(x, y); |
| pipelineBuilder.addColorFragmentProcessor(fp); |
| SkAutoTUnref<GrDrawBatch> batch( |
| GrRectBatchFactory::CreateNonAAFill(GrColor_WHITE, viewMatrix, |
| renderRect, nullptr, nullptr)); |
| drawContext->drawContextPriv().testingOnly_drawBatch(pipelineBuilder, batch); |
| } |
| x += renderRect.width() + kTestPad; |
| } |
| } |
| } |
| |
| private: |
| SkBitmap fBmp[3]; |
| |
| typedef GM INHERITED; |
| }; |
| |
| DEF_GM(return new YUVtoRGBEffect;) |
| } |
| |
| #endif |