Mike Erwin
b95ee78ed3
- use in/out instead of attribute/varying - use named output instead of gl_FragColor - use texture() instead of the multitude of older texture sampling functions The #if __VERSION__ == 120 paths (needed on Mac) will be removed after we switch to 3.3 core profile. Part of T49165 (general OpenGL upgrade)
26 lines
478 B
GLSL
26 lines
478 B
GLSL
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#if __VERSION__ == 120
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varying vec3 coords;
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#define fragColor gl_FragColor
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#else
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in vec3 coords;
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out vec4 fragColor;
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#define texture1D texture
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#define texture3D texture
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#endif
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uniform sampler3D flame_texture;
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uniform sampler1D spectrum_texture;
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void main()
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{
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float flame = texture3D(flame_texture, coords).r;
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vec4 emission = texture1D(spectrum_texture, flame);
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vec4 color;
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color.rgb = emission.a * emission.rgb;
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color.a = emission.a;
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fragColor = color;
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}
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