57e692c61c
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@13381 178a84e3-b1eb-0310-8ba1-8eac791a3b58
22 lines
563 B
GLSL
22 lines
563 B
GLSL
// Jean-manuel clemencon supertuxkart
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// Creates a cone lightbeam effect by smoothing edges
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// Original idea: http://udn.epicgames.com/Three/VolumetricLightbeamTutorial.html
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// TODO: Soft edges when it intesects geometry
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// Some artefacts are still visible
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uniform sampler2D tex;
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uniform float transparency;
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varying vec2 uv;
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varying vec3 eyeVec;
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varying vec3 normal;
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void main()
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{
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float inter = dot(normal, eyeVec);
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float m = texture2D(tex, vec2(0.5, uv.y)).r;
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float alpha = inter * inter * inter * inter * m;
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gl_FragColor = vec4(1.0, 1.0, 0.8, alpha);
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}
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