| /* |
| * Copyright 2011 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 "GrRenderTargetContext.h" |
| #include "GrFixedClip.h" |
| #include "SkColorPriv.h" |
| #include "effects/GrPorterDuffXferProcessor.h" |
| #include "effects/GrSimpleTextureEffect.h" |
| |
| constexpr int S = 200; |
| |
| DEF_SIMPLE_GM_BG(texdata, canvas, 2 * S, 2 * S, SK_ColorBLACK) { |
| GrRenderTargetContext* renderTargetContext = |
| canvas->internal_private_accessTopLayerRenderTargetContext(); |
| if (!renderTargetContext) { |
| skiagm::GM::DrawGpuOnlyMessage(canvas); |
| return; |
| } |
| |
| GrContext* context = canvas->getGrContext(); |
| if (!context) { |
| return; |
| } |
| |
| SkAutoTArray<SkPMColor> gTextureData((2 * S) * (2 * S)); |
| constexpr int stride = 2 * S; |
| const SkPMColor gray = SkPackARGB32(0x40, 0x40, 0x40, 0x40); |
| const SkPMColor white = SkPackARGB32(0xff, 0xff, 0xff, 0xff); |
| const SkPMColor red = SkPackARGB32(0x80, 0x80, 0x00, 0x00); |
| const SkPMColor blue = SkPackARGB32(0x80, 0x00, 0x00, 0x80); |
| const SkPMColor green = SkPackARGB32(0x80, 0x00, 0x80, 0x00); |
| const SkPMColor black = SkPackARGB32(0x00, 0x00, 0x00, 0x00); |
| for (int i = 0; i < 2; ++i) { |
| int offset = 0; |
| // fill upper-left |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = gray; |
| } |
| } |
| // fill upper-right |
| offset = S; |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = white; |
| } |
| } |
| // fill lower left |
| offset = S * stride; |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = black; |
| } |
| } |
| // fill lower right |
| offset = S * stride + S; |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = gray; |
| } |
| } |
| |
| GrSurfaceDesc desc; |
| desc.fOrigin = i ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin; |
| desc.fConfig = kSkia8888_GrPixelConfig; |
| desc.fWidth = 2 * S; |
| desc.fHeight = 2 * S; |
| GrTexture* texture = context->textureProvider()->createTexture( |
| desc, SkBudgeted::kNo, gTextureData.get(), 0); |
| |
| if (!texture) { |
| return; |
| } |
| SkAutoTUnref<GrTexture> au(texture); |
| |
| // setup new clip |
| GrFixedClip clip(SkIRect::MakeWH(2*S, 2*S)); |
| |
| GrPaint paint; |
| paint.setPorterDuffXPFactory(SkBlendMode::kSrcOver); |
| |
| SkMatrix vm; |
| if (i) { |
| vm.setRotate(90 * SK_Scalar1, |
| S * SK_Scalar1, |
| S * SK_Scalar1); |
| } else { |
| vm.reset(); |
| } |
| SkMatrix tm; |
| tm = vm; |
| tm.postIDiv(2*S, 2*S); |
| paint.addColorTextureProcessor(texture, nullptr, tm); |
| |
| renderTargetContext->drawRect(clip, paint, vm, SkRect::MakeWH(2*S, 2*S)); |
| |
| // now update the lower right of the texture in first pass |
| // or upper right in second pass |
| offset = 0; |
| for (int y = 0; y < S; ++y) { |
| for (int x = 0; x < S; ++x) { |
| gTextureData[offset + y * stride + x] = |
| ((x + y) % 2) ? (i ? green : red) : blue; |
| } |
| } |
| texture->writePixels(S, (i ? 0 : S), S, S, |
| texture->config(), gTextureData.get(), |
| 4 * stride); |
| renderTargetContext->drawRect(clip, paint, vm, SkRect::MakeWH(2*S, 2*S)); |
| } |
| } |
| #endif |
| |