ml
23 lines
694 B
GLSL
23 lines
694 B
GLSL
#version 100
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// GLES port of engine/shaders/star.frag - identical logic, plus an
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// explicit precision declaration (required in GLES). gl_PointCoord and
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// point-sprite rasterization for GL_POINTS both work automatically in
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// GLES with no separate enable call (unlike desktop's GL_POINT_SPRITE,
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// which doesn't exist in GLES at all - see
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// android/engine-patches/03-android-opengl-es-render.patch's
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// init_opengl() change).
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precision mediump float;
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varying float Light;
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void main() {
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vec2 mid = vec2(0.5, 0.5) - gl_PointCoord;
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float dist = 0.5 - length(mid);
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dist *= 3.0;
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dist = min(dist, 1.0);
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gl_FragColor = vec4(dist * Light, dist * Light, dist * Light, 1.0);
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}
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