public void Texture2D()
{
BlittableRGBA[] pixels = new BlittableRGBA[]
{
new BlittableRGBA(Color.Red),
new BlittableRGBA(Color.Green)
};
int sizeInBytes = ArraySizeInBytes.Size(pixels);
Texture2DDescription description = new Texture2DDescription(2, 1, TextureFormat.RedGreenBlueAlpha8, false);
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (WritePixelBuffer writePixelBuffer = Device.CreateWritePixelBuffer(PixelBufferHint.Stream, sizeInBytes))
using (Texture2D texture = Device.CreateTexture2D(description))
{
writePixelBuffer.CopyFromSystemMemory(pixels);
//
// Create texture with pixel buffer
//
texture.CopyFromBuffer(writePixelBuffer, BlittableRGBA.Format, BlittableRGBA.Datatype);
//
// Read back pixels
//
using (ReadPixelBuffer readPixelBuffer = texture.CopyToBuffer(BlittableRGBA.Format, BlittableRGBA.Datatype))
{
BlittableRGBA[] readPixels = readPixelBuffer.CopyToSystemMemory <BlittableRGBA>();
Assert.AreEqual(sizeInBytes, readPixelBuffer.SizeInBytes);
Assert.AreEqual(pixels[0], readPixels[0]);
Assert.AreEqual(pixels[1], readPixels[1]);
Assert.AreEqual(description, texture.Description);
}
}
}
public void WritePixelBuffer()
{
BlittableRGBA[] pixels = new BlittableRGBA[]
{
new BlittableRGBA(Color.Red),
new BlittableRGBA(Color.Green),
new BlittableRGBA(Color.Blue),
new BlittableRGBA(Color.White)
};
int sizeInBytes = ArraySizeInBytes.Size(pixels);
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (WritePixelBuffer pixelBuffer = Device.CreateWritePixelBuffer(PixelBufferHint.Stream, sizeInBytes))
{
//
// Verify creating pixel buffer
//
Assert.IsNotNull(pixelBuffer);
Assert.AreEqual(PixelBufferHint.Stream, pixelBuffer.UsageHint);
Assert.AreEqual(sizeInBytes, pixelBuffer.SizeInBytes);
//
// Verify copying entire buffer between system memory and pixel buffer
//
pixelBuffer.CopyFromSystemMemory(pixels);
BlittableRGBA[] pixels2 = pixelBuffer.CopyToSystemMemory <BlittableRGBA>(0, pixelBuffer.SizeInBytes);
Assert.AreEqual(pixels[0], pixels2[0]);
Assert.AreEqual(pixels[1], pixels2[1]);
Assert.AreEqual(pixels[2], pixels2[2]);
//
// Verify modiying a subset of the vertex buffer
//
BlittableRGBA modifiedPixel = new BlittableRGBA(Color.Black);
pixelBuffer.CopyFromSystemMemory(new[] { modifiedPixel }, SizeInBytes <BlittableRGBA> .Value);
BlittableRGBA[] pixels3 = pixelBuffer.CopyToSystemMemory <BlittableRGBA>(0, pixelBuffer.SizeInBytes);
Assert.AreEqual(pixels[0], pixels3[0]);
Assert.AreEqual(modifiedPixel, pixels3[1]);
Assert.AreEqual(pixels[2], pixels3[2]);
}
}
public TextureFactory(Context context, BlittableRGBA rgba)
{
_context = context;
_rgba = rgba;
}
