Lucas de Vries
48 lines
1.6 KiB
Plaintext
48 lines
1.6 KiB
Plaintext
const float pi = 3.14159265358;
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const int nLightCount = 2;
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vec3 light[nLightCount];
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float dist[nLightCount];
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uniform sampler2D depthTex;
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uniform vec2 lightPos[nLightCount];
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uniform vec2 texSize;
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uniform float lightRadius[nLightCount];
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uniform float cycle;
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varying vec2 uv;
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varying float lightDepth[nLightCount], fallOffDepth[nLightCount];
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varying vec4 lightVec[nLightCount], pos, camDirection[nLightCount];
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varying vec2 radialAnimation[nLightCount];
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varying vec3 lightColor[nLightCount];
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varying vec2 aspectRatio;
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vec3 toLinear(vec3 color){
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return pow(color, vec3(2.2));
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}
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void main() {
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uv = gl_MultiTexCoord0.xy;
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pos = vec4(vec2(2.0*(uv-0.5)),0.0,1.0);
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aspectRatio = vec2(texSize.x / texSize.y, 1.0);
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// in case someone plays it on a screen that is rotated 90
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if (texSize.x < texSize.y)
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aspectRatio = vec2(1.0, texSize.y / texSize.x);
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for (int i = 0; i < nLightCount; i++) {
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// to not distort the rays, it needs the real uv's
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camDirection[i] = gl_ProjectionMatrix * vec4(lightPos[i], 0.0,1.0);
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fallOffDepth[i] = distance(gl_ProjectionMatrix * gl_LightSource[i].position - pos, pos);
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lightDepth[i] = (gl_ProjectionMatrixInverse * (normalize(gl_LightSource[i].position) - pos) * vec4(aspectRatio, 1.0, 1.0)).z;
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// we need to aspect correct to get a proper fade gradient
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lightVec[i] = (gl_ProjectionMatrix * normalize(gl_LightSource[i].position) - pos);
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// radial noise test // move to vertShaders
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radialAnimation[i] = vec2(abs(cycle - 0.5));
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radialAnimation[i].y = 1.0 - radialAnimation[i].x;
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lightColor[i] = toLinear(gl_LightSource[i].diffuse.rgb);
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}
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gl_Position = pos;
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}
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