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| 1 /* |
| 2 * Copyright 2016 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #include "Test.h" |
| 9 #if SK_SUPPORT_GPU |
| 10 |
| 11 #include "GrContext.h" |
| 12 #include "GrGpu.h" |
| 13 #include "GrTextureStripAtlas.h" |
| 14 #include "GrTypes.h" |
| 15 #include "SkGpuDevice.h" |
| 16 |
| 17 // This tests that GrTextureStripAtlas flushes pending IO on the texture it acqu
ires. |
| 18 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrTextureStripAtlasFlush, reporter, ctxInfo)
{ |
| 19 GrContext* context = ctxInfo.grContext(); |
| 20 GrSurfaceDesc desc; |
| 21 desc.fWidth = 32; |
| 22 desc.fHeight = 32; |
| 23 desc.fConfig = kRGBA_8888_GrPixelConfig; |
| 24 GrTexture* texture = context->textureProvider()->createTexture(desc, SkBudge
ted::kYes, |
| 25 nullptr, 0); |
| 26 |
| 27 GrSurfaceDesc targetDesc = desc; |
| 28 targetDesc.fFlags = kRenderTarget_GrSurfaceFlag; |
| 29 GrTexture* target = context->textureProvider()->createTexture(targetDesc, Sk
Budgeted::kYes, |
| 30 nullptr, 0); |
| 31 |
| 32 SkAutoTMalloc<uint32_t> pixels(desc.fWidth * desc.fHeight); |
| 33 memset(pixels.get(), 0xFF, sizeof(uint32_t) * desc.fWidth * desc.fHeight); |
| 34 texture->writePixels(0, 0, desc.fWidth, desc.fHeight, kRGBA_8888_GrPixelConf
ig, pixels.get()); |
| 35 |
| 36 // Add a pending read to the texture, and then make it available for reuse. |
| 37 context->copySurface(target, texture); |
| 38 texture->unref(); |
| 39 |
| 40 // Create an atlas with parameters that allow it to reuse the texture. |
| 41 GrTextureStripAtlas::Desc atlasDesc; |
| 42 atlasDesc.fContext = context; |
| 43 atlasDesc.fConfig = desc.fConfig; |
| 44 atlasDesc.fWidth = desc.fWidth; |
| 45 atlasDesc.fHeight = desc.fHeight; |
| 46 atlasDesc.fRowHeight = 1; |
| 47 GrTextureStripAtlas* atlas = GrTextureStripAtlas::GetAtlas(atlasDesc); |
| 48 |
| 49 // Write to the atlas' texture. |
| 50 SkImageInfo info = SkImageInfo::MakeN32(desc.fWidth, desc.fHeight, kPremul_S
kAlphaType); |
| 51 size_t rowBytes = desc.fWidth * GrBytesPerPixel(desc.fConfig); |
| 52 SkBitmap bitmap; |
| 53 bitmap.allocPixels(info, rowBytes); |
| 54 memset(bitmap.getPixels(), 1, rowBytes * desc.fHeight); |
| 55 atlas->lockRow(bitmap); |
| 56 if (!context->caps()->preferVRAMUseOverFlushes()) |
| 57 REPORTER_ASSERT(reporter, texture == atlas->getTexture()); |
| 58 |
| 59 // The atlas' use of its texture shouldn't change which pixels got copied to
the target. |
| 60 SkAutoTMalloc<uint32_t> actualPixels(desc.fWidth * desc.fHeight); |
| 61 bool success = target->readPixels(0, 0, desc.fWidth, desc.fHeight, kRGBA_888
8_GrPixelConfig, |
| 62 actualPixels.get()); |
| 63 REPORTER_ASSERT(reporter, success); |
| 64 REPORTER_ASSERT(reporter, |
| 65 !memcmp(pixels.get(), actualPixels.get(), |
| 66 sizeof(uint32_t) * desc.fWidth * desc.fHeight)); |
| 67 target->unref(); |
| 68 } |
| 69 |
| 70 #endif |
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