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]);
            }
        }
    }
}
Example #2
0
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);
}