stk-code_catmod/data/shaders/splatting.frag

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#version 130
uniform sampler2D tex_layout;
uniform sampler2D tex_detail0;
uniform sampler2D tex_detail1;
uniform sampler2D tex_detail2;
uniform sampler2D tex_detail3;
//uniform sampler2D tex_detail4;
noperspective in vec3 nor;
void main() {
// Splatting part
vec4 splatting = texture2D(tex_layout, gl_TexCoord[1].st);
vec4 detail0 = texture2D(tex_detail0, gl_TexCoord[0].st);
vec4 detail1 = texture2D(tex_detail1, gl_TexCoord[0].st);
vec4 detail2 = texture2D(tex_detail2, gl_TexCoord[0].st);
vec4 detail3 = texture2D(tex_detail3, gl_TexCoord[0].st);
// vec4 detail4 = texture2D(tex_detail4, gl_TexCoord[0].st);
vec4 detail4 = vec4(0.0);
vec4 splatted = (splatting.r * detail0 +
splatting.g * detail1 +
splatting.b * detail2 +
(1.0 - splatting.r - splatting.g - splatting.b) * detail3 +
(1.0 - splatting.a) * detail4)
* gl_Color;
gl_FragData[0] = splatted;
gl_FragData[1] = vec4(normalize(nor) * 0.5 + 0.5, gl_FragCoord.z);
}