private bool UpSampleTexture()
{
// Set the render target to be the render to texture.
UpSampleTexure.SetRenderTarget(D3D.DeviceContext);
// Clear the render to texture.
UpSampleTexure.ClearRenderTarget(D3D.DeviceContext, 0.0f, 0.0f, 0.0f, 1.0f);
// Generate the view matrix based on the camera's position.
Camera.Render();
// Get the world and view matrices from the camera and d3d objects.
Matrix cameraViewMatrix = Camera.BaseViewMatrix;
Matrix worldMatrix = D3D.WorldMatrix;
// Get the ortho matrix from the render to texture since texture has different dimensions.
Matrix orthoMatrix = UpSampleTexure.OrthoMatrix;
// Turn off the Z buffer to begin all 2D rendering.
D3D.TurnZBufferOff();
// Put the full screen ortho window vertex and index buffers on the graphics pipeline to prepare them for drawing.
if (!FullScreenWindow.Render(D3D.DeviceContext))
{
return(false);
}
// Render the full screen ortho window using the texture shader and the small sized final blurred render to texture resource.
if (!TextureShader.Render(D3D.DeviceContext, FullScreenWindow.IndexCount, worldMatrix, cameraViewMatrix, orthoMatrix, VerticalBlurTexture.ShaderResourceView))
{
return(false);
}
// Turn the Z buffer back on now that all 2D rendering has completed.
D3D.TurnZBufferOn();
// Reset the render target back to the original back buffer and not the render to texture anymore.
D3D.SetBackBufferRenderTarget();
// Reset the viewport back to the original.
D3D.ResetViewPort();
return(true);
}
