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

#version 150

in vec4 vertex;
in vec3 normal;
in vec4 uv0;
in vec4 uv1; // pos2
in vec4 uv2; // normal2

out vec2 oUv;
out vec4 colour;

uniform mat4 worldViewProj;
uniform vec4 anim_t;
uniform vec4 objSpaceLightPos;
uniform vec4 ambient;

// hardware morph animation (with normals)
void main()
{
        // interpolate position
        vec4 posinterp = vec4(vertex.xyz + anim_t.x*(uv1.xyz - vertex.xyz), 1.0);

    // nlerp normal
        vec3 ninterp = normal + anim_t.x*(uv2.xyz - normal);
        ninterp = normalize(ninterp);

        gl_Position = worldViewProj * posinterp;
        oUv = uv0.xy;

        vec3 lightDir = normalize(
                objSpaceLightPos.xyz - (posinterp.xyz * objSpaceLightPos.w));

        // Colour it red to make it easy to identify
        float lit = clamp(dot(lightDir, ninterp), 0.0, 1.0);
        colour = vec4((ambient.rgb + vec3(lit,lit,lit)) * vec3(1.0,0.0,0.0), 1.0);
}