source: data/branches/Shader_HS18/programs/Example/GLSL150/Example_BumpMappingShadowRcvFp.glsl @ 12083

#version 150

// General functions

// Expand a range-compressed vector
vec3 expand(vec3 v)
{
        return (v - 0.5) * 2.0;
}

uniform sampler2D shadowMap;
uniform sampler2D normalMap;
uniform vec4 lightDiffuse;

in vec4 uvproj;
in vec4 oUv0;
in vec3 oTSLightDir;

out vec4 fragColour;

void main()
{
        // retrieve normalised light vector, expand from range-compressed
        vec3 lightVec = expand(normalize(oTSLightDir).xyz);

        // get bump map vector, again expand from range-compressed
        vec3 bumpVec = expand(texture(normalMap, oUv0.xy).xyz);

        // get shadow value
        vec3 shadow = textureProj(shadowMap, uvproj).xyz;

        // Calculate dot product
        fragColour = vec4(shadow * lightDiffuse.xyz * dot(bumpVec, lightVec), 1.0);
}