/// <summary>
/// Performs blit from TextureArray RT to Texture2D RT that can be used for UI or GPU readback.
/// </summary>
/// <param name="parameters">Blit parameters.</param>
/// <param name="source">Blit source (TextureArray <see cref="RTHandle"/>)</param>
/// <param name="destination">Blit source (Texture2D <see cref="RTHandle"/>)</param>
/// <param name="cmd">Used command buffer.</param>
private static void BlitFinalCameraTexture(BlitParams parameters, RTHandle source, RTHandle destination, CommandBuffer cmd)
{
var scaleBias = new Vector4(parameters.viewport.width / source.rt.width, parameters.viewport.height / source.rt.height, 0.0f, 0.0f);
BlitPropertyBlock.SetTexture(BlitTextureProperty, source);
BlitPropertyBlock.SetVector(BlitScaleBiasProperty, scaleBias);
BlitPropertyBlock.SetFloat(BlitMipLevelProperty, 0);
BlitPropertyBlock.SetInt(BlitTexArraySliceProperty, parameters.srcTexArraySlice);
HDUtils.DrawFullScreen(cmd, parameters.viewport, parameters.blitMaterial, destination, BlitPropertyBlock, 0, parameters.dstTexArraySlice);
}
/// <summary>
/// Performs blit from TextureArray RT to Texture2D RT that can be used for UI or GPU readback.
/// </summary>
/// <param name="cmd">Used command buffer.</param>
/// <param name="camera">Camera for which blit is performed.</param>
public void BlitTo2D(CommandBuffer cmd, HDCamera camera)
{
var parameters = new BlitParams
{
viewport = new Rect(0, 0, currentWidth, currentHeight),
srcTexArraySlice = -1,
dstTexArraySlice = -1,
};
parameters.blitMaterial = HDUtils.GetBlitMaterial(TextureXR.useTexArray ? TextureDimension.Tex2DArray : TextureDimension.Tex2D, parameters.srcTexArraySlice >= 0);
BlitFinalCameraTexture(parameters, colorRt, uiRt, cmd);
}