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uniform sampler2D colorTex;
uniform sampler2D depthTex;
uniform float sx;
uniform float sy;
void main (void)
{
const float depthEnd = 0.993;
const float depthSize = 0.015;
vec3 colorP = texture2D(colorTex, gl_TexCoord[0]).rgb;
float depth = texture2D(depthTex, gl_TexCoord[0].st).r;
if ((depth - depthEnd) < depthSize)
{
const int depthKernelSize = 5;
vec3 colorSum = vec3(0.0);
float cnt = 0.0;
for (int x = -depthKernelSize; x <= depthKernelSize; x++)
for (int y = -depthKernelSize; y <= depthKernelSize; y++)
{
float s = gl_TexCoord[0].s + x * sy;
float t = gl_TexCoord[0].t + y * sy;
float scalex = ((depthKernelSize+1) - abs(float(x))) / depthKernelSize;
float scaley = ((depthKernelSize+1) - abs(float(y))) / depthKernelSize;
float scale = scalex * scaley;
vec3 color = texture2D(colorTex, vec2(s,t)).rgb;
colorSum += scale * color;
cnt += scale;
}
colorSum /= cnt;
float depthScale = pow(max(0.0f,min(1.0, ( abs(depth-depthEnd)) / depthSize)),1.5);
colorP = depthScale * colorSum + (1.0 - depthScale) * colorP;
}
gl_FragColor = vec4(colorP, 1.0);
}
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