diff options
Diffstat (limited to 'hlsl/downsample.fx')
-rw-r--r-- | hlsl/downsample.fx | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/hlsl/downsample.fx b/hlsl/downsample.fx index 122172350f9..6cb18f53935 100644 --- a/hlsl/downsample.fx +++ b/hlsl/downsample.fx @@ -57,6 +57,11 @@ uniform float2 SourceRect; uniform bool PrepareVector; +static const float2 Coord0Offset = float2(-0.5f, -0.5f); +static const float2 Coord1Offset = float2( 0.5f, -0.5f); +static const float2 Coord2Offset = float2(-0.5f, 0.5f); +static const float2 Coord3Offset = float2( 0.5f, 0.5f); + VS_OUTPUT vs_main(VS_INPUT Input) { VS_OUTPUT Output = (VS_OUTPUT)0; @@ -72,14 +77,12 @@ VS_OUTPUT vs_main(VS_INPUT Input) Output.Color = Input.Color; float2 TexCoord = Input.Position.xy / ScreenDims; - TexCoord += PrepareVector - ? 0.5f / TargetDims // half texel offset correction (DX9) - only for vector grpahics - : 0.0f; - - Output.TexCoord01.xy = TexCoord + float2(-0.5f, -0.5f) * TargetTexelDims; - Output.TexCoord01.zw = TexCoord + float2( 0.5f, -0.5f) * TargetTexelDims; - Output.TexCoord23.xy = TexCoord + float2(-0.5f, 0.5f) * TargetTexelDims; - Output.TexCoord23.zw = TexCoord + float2( 0.5f, 0.5f) * TargetTexelDims; + TexCoord += 0.5f / TargetDims; // half texel offset correction (DX9) + + Output.TexCoord01.xy = TexCoord + Coord0Offset * TargetTexelDims; + Output.TexCoord01.zw = TexCoord + Coord1Offset * TargetTexelDims; + Output.TexCoord23.xy = TexCoord + Coord2Offset * TargetTexelDims; + Output.TexCoord23.zw = TexCoord + Coord3Offset * TargetTexelDims; return Output; } |