luboslenco
32 lines
702 B
GLSL
32 lines
702 B
GLSL
#version 450
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uniform sampler2D tex;
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uniform int channel;
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in vec2 tex_coord;
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in vec4 color;
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out vec4 frag_color;
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void main() {
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if (channel == 1) {
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frag_color = textureLod(tex, tex_coord, 0).rrra * color;
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}
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else if (channel == 2) {
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frag_color = textureLod(tex, tex_coord, 0).ggga * color;
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}
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else if (channel == 3) {
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frag_color = textureLod(tex, tex_coord, 0).bbba * color;
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}
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else if (channel == 4) {
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frag_color = textureLod(tex, tex_coord, 0).aaaa * color;
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}
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else if (channel == 5) {
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frag_color = textureLod(tex, tex_coord, 0).rgba * color;
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}
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else {
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vec4 tex_sample = textureLod(tex, tex_coord, 0).rgba;
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tex_sample.rgb *= tex_sample.a;
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frag_color = tex_sample * color;
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}
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}
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