85 lines
1.9 KiB
Text
85 lines
1.9 KiB
Text
|
/*
|
||
|
|
* bilinear low res scaling, samples 9 pixels of a larger image to scale to a
|
||
|
|
* low resolution image below half size
|
||
|
|
*/
|
||
|
|
|
||
|
|
uniform float4x4 ViewProj;
|
||
|
|
uniform texture2d image;
|
||
|
|
uniform float4x4 color_matrix;
|
||
|
|
uniform float3 color_range_min = {0.0, 0.0, 0.0};
|
||
|
|
uniform float3 color_range_max = {1.0, 1.0, 1.0};
|
||
|
|
uniform float2 base_dimension_i;
|
||
|
|
|
||
|
|
sampler_state textureSampler {
|
||
|
|
Filter = Linear;
|
||
|
|
AddressU = Clamp;
|
||
|
|
AddressV = Clamp;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct VertData {
|
||
|
|
float4 pos : POSITION;
|
||
|
|
float2 uv : TEXCOORD0;
|
||
|
|
};
|
||
|
|
|
||
|
|
VertData VSDefault(VertData v_in)
|
||
|
|
{
|
||
|
|
VertData vert_out;
|
||
|
|
vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
|
||
|
|
vert_out.uv = v_in.uv;
|
||
|
|
return vert_out;
|
||
|
|
}
|
||
|
|
|
||
|
|
float4 pixel(float2 uv)
|
||
|
|
{
|
||
|
|
return image.Sample(textureSampler, uv);
|
||
|
|
}
|
||
|
|
|
||
|
|
float4 DrawLowresBilinear(VertData v_in)
|
||
|
|
{
|
||
|
|
float2 stepxy = base_dimension_i;
|
||
|
|
float4 out_color;
|
||
|
|
|
||
|
|
out_color = pixel(v_in.uv);
|
||
|
|
out_color += pixel(v_in.uv + float2(-stepxy.x, -stepxy.y));
|
||
|
|
out_color += pixel(v_in.uv + float2(-stepxy.x, 0.0));
|
||
|
|
out_color += pixel(v_in.uv + float2(-stepxy.x, stepxy.y));
|
||
|
|
out_color += pixel(v_in.uv + float2( 0.0, -stepxy.y));
|
||
|
|
out_color += pixel(v_in.uv + float2( 0.0, stepxy.y));
|
||
|
|
out_color += pixel(v_in.uv + float2( stepxy.x, -stepxy.y));
|
||
|
|
out_color += pixel(v_in.uv + float2( stepxy.x, 0.0));
|
||
|
|
out_color += pixel(v_in.uv + float2( stepxy.x, stepxy.y));
|
||
|
|
return out_color / float4(9.0, 9.0, 9.0, 9.0);
|
||
|
|
}
|
||
|
|
|
||
|
|
float4 PSDrawLowresBilinearRGBA(VertData v_in) : TARGET
|
||
|
|
{
|
||
|
|
return DrawLowresBilinear(v_in);
|
||
|
|
}
|
||
|
|
|
||
|
|
float4 PSDrawLowresBilinearMatrix(VertData v_in) : TARGET
|
||
|
|
{
|
||
|
|
float4 yuv = DrawLowresBilinear(v_in);
|
||
|
|
|
||
|
|
yuv.xyz = clamp(yuv.xyz, color_range_min, color_range_max);
|
||
|
|
return saturate(mul(float4(yuv.xyz, 1.0), color_matrix));
|
||
|
|
}
|
||
|
|
|
||
|
|
technique Draw
|
||
|
|
{
|
||
|
|
pass
|
||
|
|
{
|
||
|
|
vertex_shader = VSDefault(v_in);
|
||
|
|
pixel_shader = PSDrawLowresBilinearRGBA(v_in);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
technique DrawMatrix
|
||
|
|
{
|
||
|
|
pass
|
||
|
|
{
|
||
|
|
vertex_shader = VSDefault(v_in);
|
||
|
|
pixel_shader = PSDrawLowresBilinearMatrix(v_in);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|