diff options
Diffstat (limited to 'hlsl/prescale.fx')
-rw-r--r-- | hlsl/prescale.fx | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/hlsl/prescale.fx b/hlsl/prescale.fx index 33b2a4efb06..846c02577ce 100644 --- a/hlsl/prescale.fx +++ b/hlsl/prescale.fx @@ -49,6 +49,7 @@ struct PS_INPUT //----------------------------------------------------------------------------- uniform float2 ScreenDims; +uniform float2 TargetDims; VS_OUTPUT vs_main(VS_INPUT Input) { @@ -56,11 +57,12 @@ VS_OUTPUT vs_main(VS_INPUT Input) Output.Position = float4(Input.Position.xyz, 1.0f); Output.Position.xy /= ScreenDims; - Output.Position.y = 1.0f - Output.Position.y; - Output.Position.xy -= 0.5f; - Output.Position *= float4(2.0f, 2.0f, 1.0f, 1.0f); + Output.Position.y = 1.0f - Output.Position.y; // flip y + Output.Position.xy -= 0.5f; // center + Output.Position.xy *= 2.0f; // zoom - Output.TexCoord = Input.TexCoord + 0.5f / ScreenDims; + Output.TexCoord = Input.TexCoord; + Output.TexCoord += 0.5f / TargetDims; // half texel offset correction (DX9) return Output; } |