48 lines
1.5 KiB
Text
48 lines
1.5 KiB
Text
|
//Cg
|
||
|
|
|
||
|
|
void vshader(
|
||
|
|
float4 vtx_position : POSITION,
|
||
|
|
float2 vtx_texcoord0 : TEXCOORD0,
|
||
|
|
out float4 l_position : POSITION,
|
||
|
|
out float2 l_texcoord0 : TEXCOORD0,
|
||
|
|
out float2 l_texcoord1 : TEXCOORD1,
|
||
|
|
uniform float4 texpad_tex,
|
||
|
|
uniform float4x4 mat_modelproj)
|
||
|
|
{
|
||
|
|
l_position=mul(mat_modelproj, vtx_position);
|
||
|
|
l_texcoord0 = vtx_position.xz * texpad_tex.xy + texpad_tex.xy;
|
||
|
|
l_texcoord1 = l_position.xy;
|
||
|
|
}
|
||
|
|
|
||
|
|
void fshader(float2 l_texcoord1 : TEXCOORD1,
|
||
|
|
float2 l_texcoord0 : TEXCOORD0,
|
||
|
|
out float4 o_color : COLOR,
|
||
|
|
uniform sampler2D k_tex : TEXUNIT0)
|
||
|
|
{
|
||
|
|
float4 color = tex2D(k_tex, l_texcoord0).rgba;
|
||
|
|
|
||
|
|
float newred = (color.r * 0.338) + (color.g * 0.714) + (color.b * 0.134);
|
||
|
|
float newgreen = (color.r * 0.294) + (color.g * 0.631) + (color.b * 0.113);
|
||
|
|
float newblue = (color.r * 0.217) + (color.g * 0.479) + (color.b * 0.076);
|
||
|
|
|
||
|
|
newred = clamp(newred, 0, 1);
|
||
|
|
newgreen = clamp(newgreen, 0, 1);
|
||
|
|
newblue = clamp(newblue, 0, 1);
|
||
|
|
|
||
|
|
// create a vignette to simulate old optics
|
||
|
|
float d = distance(float2(0.0, 0.0), l_texcoord1);
|
||
|
|
float OuterVignetting = 1.6;
|
||
|
|
float InnerVignetting = 0.6;
|
||
|
|
float vignetting = clamp((OuterVignetting - d) / (OuterVignetting - InnerVignetting), 0.0, 1.0);
|
||
|
|
// non-linear fade to prevent ugly border effect
|
||
|
|
float diff = 1.0 - vignetting;
|
||
|
|
float scale = 1.0 - (diff * diff);
|
||
|
|
newred *= scale;
|
||
|
|
newgreen *= scale;
|
||
|
|
newblue *= scale;
|
||
|
|
|
||
|
|
o_color = float4(newred, newgreen, newblue, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
|