public void TestDiscardWrite()
{
LosgapSystem.InvokeOnMaster(() => {
// Define variables and constants
const uint WIDTH_TX = 512U;
const uint WRITE_OFFSET = 30U;
const int NUM_TX_TO_WRITE = (int)(WIDTH_TX - (WRITE_OFFSET * 2U));
Texture1D <TexelFormat.RGBA32Int> srcTex = TextureFactory.NewTexture1D <TexelFormat.RGBA32Int>()
.WithPermittedBindings(GPUBindings.ReadableShaderResource)
.WithUsage(ResourceUsage.DiscardWrite)
.WithWidth(WIDTH_TX);
// Set up context
// Execute
srcTex.DiscardWrite(
Enumerable.Range(0, NUM_TX_TO_WRITE)
.Select(i => new TexelFormat.RGBA32Int {
R = i, G = i * 2, B = i * 3, A = i * 4
})
.ToArray(),
0U,
WRITE_OFFSET
);
Texture1D <TexelFormat.RGBA32Int> dstTex = srcTex.Clone()
.WithUsage(ResourceUsage.StagingRead)
.WithPermittedBindings(GPUBindings.None);
srcTex.CopyTo(dstTex);
// Assert outcome
TexelArray1D <TexelFormat.RGBA32Int> copiedData = dstTex.Read(0U);
for (int i = 0; i < NUM_TX_TO_WRITE; ++i)
{
Assert.AreEqual(i, copiedData[i + (int)WRITE_OFFSET].R);
Assert.AreEqual(i * 2, copiedData[i + (int)WRITE_OFFSET].G);
Assert.AreEqual(i * 3, copiedData[i + (int)WRITE_OFFSET].B);
Assert.AreEqual(i * 4, copiedData[i + (int)WRITE_OFFSET].A);
}
srcTex.Dispose();
dstTex.Dispose();
});
}
