mirror of
https://github.com/curioustorvald/Terrarum.git
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25 lines
841 B
GLSL
25 lines
841 B
GLSL
varying vec4 v_color;
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varying vec2 v_texCoords;
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uniform sampler2D u_texture; // world texture, has alpha value that is meaningful
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uniform sampler2D tex1; // glow texture, SHOULD contain alpha of all 1.0
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void main(void) {
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vec4 colorTex0 = texture2D(u_texture, v_texCoords); // lightmap (RGB) pre-mixed
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vec4 colorTex1 = texture2D(tex1, v_texCoords); // lightmap (A) pre-mixed
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vec4 newColor = vec4(0.0, 0.0, 0.0, colorTex0.a);
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if (colorTex0.r > colorTex1.r) newColor.r = colorTex0.r;
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else newColor.r = colorTex1.r;
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if (colorTex0.g > colorTex1.g) newColor.g = colorTex0.g;
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else newColor.g = colorTex1.g;
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if (colorTex0.b > colorTex1.b) newColor.b = colorTex0.b;
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else newColor.b = colorTex1.b;
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gl_FragColor = newColor;
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} |