47 lines
974 B
GLSL
47 lines
974 B
GLSL
#version 330 core
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uniform mat4 mWorld;
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uniform mat4 mView;
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uniform mat4 mProjection;
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uniform vec3 vEye;
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in float zPos;
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in vec3 norm;
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out vec4 frag_colour;
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vec3 hsv_to_rgb(float h, float s, float v)
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{
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float c = v * s;
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h = mod((h * 6.0), 6.0);
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float x = c * (1.0 - abs(mod(h, 2.0) - 1.0));
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vec3 color;
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if (0.0 <= h && h < 1.0) {
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color = vec3(c, x, 0.0);
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} else if (1.0 <= h && h < 2.0) {
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color = vec3(x, c, 0.0);
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} else if (2.0 <= h && h < 3.0) {
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color = vec3(0.0, c, x);
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} else if (3.0 <= h && h < 4.0) {
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color = vec3(0.0, x, c);
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} else if (4.0 <= h && h < 5.0) {
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color = vec3(x, 0.0, c);
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} else if (5.0 <= h && h < 6.0) {
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color = vec3(c, 0.0, x);
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} else {
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color = vec3(0.0, 0.0, 0.0);
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}
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color.rgb += v - c;
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return color;
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}
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void main () {
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vec3 materialColor = hsv_to_rgb(zPos, 1, 1);
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float diffuse = clamp(dot(normalize(norm), -normalize(vec3(0,0,1))), 0, 0.6);
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vec3 color = materialColor*diffuse;
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frag_colour = vec4(color, 1.0);
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} |