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Add hicontrast.

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This commit is contained in:
Themaister 2011-02-27 20:42:02 +01:00
parent 069e9b574f
commit de9dc686ac
1 changed files with 71 additions and 0 deletions
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71
hqflt/cg/waterpaint-hicontrast.cg Normal file
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/*
Author: Themaister
License: Public domain
*/
/* Default Vertex shader */
void main_vertex
(
float4 position : POSITION,
float4 color : COLOR,
float2 texCoord : TEXCOORD0,
uniform float4x4 modelViewProj,
out float4 oPosition : POSITION,
out float4 oColor : COLOR,
out float2 otexCoord : TEXCOORD
)
{
oPosition = mul(modelViewProj, position);
oColor = color;
otexCoord = texCoord;
}
struct output
{
float4 color : COLOR;
};
struct input
{
float2 video_size;
float2 texture_size;
float2 output_size;
};
output main_fragment (float2 tex : TEXCOORD0, uniform input IN, uniform sampler2D s0 : TEXUNIT0)
{
float2 texsize = IN.texture_size;
const float scale_factor = 1.0;
float2 delta = 0.5 / (texsize * scale_factor);
float dx = delta.x;
float dy = delta.y;
float3 c00 = tex2D(s0, tex + float2(-dx, -dy)).xyz;
float3 c01 = tex2D(s0, tex + float2(-dx, 0)).xyz;
float3 c02 = tex2D(s0, tex + float2(-dx, dy)).xyz;
float3 c10 = tex2D(s0, tex + float2(0, -dy)).xyz;
float3 c11 = tex2D(s0, tex + float2(0, 0)).xyz;
float3 c12 = tex2D(s0, tex + float2(0, dy)).xyz;
float3 c20 = tex2D(s0, tex + float2(dx, -dy)).xyz;
float3 c21 = tex2D(s0, tex + float2(dx, 0)).xyz;
float3 c22 = tex2D(s0, tex + float2(dx, dy)).xyz;
output OUT;
float3 first = lerp(c00, c20, frac(scale_factor * tex.x * texsize.x + 0.5));
float3 second = lerp(c02, c22, frac(scale_factor * tex.x * texsize.x + 0.5));
float3 mid_horiz = lerp(c01, c21, frac(scale_factor * tex.x * texsize.x + 0.5));
float3 mid_vert = lerp(c10, c12, frac(scale_factor * tex.y * texsize.y + 0.5));
float3 res = lerp(first, second, frac(scale_factor * tex.y * texsize.y + 0.5));
OUT.color = float4(0.28 * (res + mid_horiz + mid_vert) + 4.7 * abs(res - lerp(mid_horiz, mid_vert, 0.5)), 1.0);
return OUT;
}