DEF_GPUTEST(FloatingPointTextureTest, reporter, factory) { float controlPixelData[FP_CONTROL_ARRAY_SIZE]; float readBuffer[FP_CONTROL_ARRAY_SIZE]; for (int i = 0; i < FP_CONTROL_ARRAY_SIZE; i += 4) { controlPixelData[i] = FLT_MIN; controlPixelData[i + 1] = FLT_MAX; controlPixelData[i + 2] = FLT_EPSILON; controlPixelData[i + 3] = kMaxIntegerRepresentableInSPFloatingPoint; } for (int origin = 0; origin < 2; ++origin) { int glCtxTypeCnt = 1; glCtxTypeCnt = GrContextFactory::kGLContextTypeCnt; for (int glCtxType = 0; glCtxType < glCtxTypeCnt; ++glCtxType) { GrTextureDesc desc; desc.fFlags = kRenderTarget_GrTextureFlagBit; desc.fWidth = DEV_W; desc.fHeight = DEV_H; desc.fConfig = kRGBA_float_GrPixelConfig; desc.fOrigin = 0 == origin ? kTopLeft_GrSurfaceOrigin : kBottomLeft_GrSurfaceOrigin; GrContext* context = NULL; GrContextFactory::GLContextType type = static_cast<GrContextFactory::GLContextType>(glCtxType); if (!GrContextFactory::IsRenderingGLContext(type)) { continue; } context = factory->get(type); if (NULL == context){ continue; } SkAutoTUnref<GrTexture> fpTexture(context->createUncachedTexture(desc, NULL, 0)); // Floating point textures are NOT supported everywhere if (NULL == fpTexture) { continue; } // write square context->writeTexturePixels(fpTexture, 0, 0, DEV_W, DEV_H, desc.fConfig, controlPixelData, 0); context->readTexturePixels(fpTexture, 0, 0, DEV_W, DEV_H, desc.fConfig, readBuffer, 0); for (int j = 0; j < FP_CONTROL_ARRAY_SIZE; ++j) { REPORTER_ASSERT(reporter, readBuffer[j] == controlPixelData[j]); } } } }
bool GrTexture::readPixels(int left, int top, int width, int height, GrPixelConfig config, void* buffer, size_t rowBytes, uint32_t pixelOpsFlags) { // go through context so that all necessary flushing occurs GrContext* context = this->getContext(); if (NULL == context) { return false; } return context->readTexturePixels(this, left, top, width, height, config, buffer, rowBytes, pixelOpsFlags); }