26 lines
585 B
GLSL
26 lines
585 B
GLSL
!!ver 100-450
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!!samps 1
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//this shader is applies gamma/contrast/brightness to the source image, and dumps it out.
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varying vec2 tc;
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varying vec4 vc; //gamma, contrast, brightness, contrastboost
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#ifdef VERTEX_SHADER
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attribute vec2 v_texcoord;
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attribute vec4 v_colour;
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void main ()
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{
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tc = vec2(v_texcoord.s, 1.0-v_texcoord.t);
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vc = v_colour;
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gl_Position = ftetransform();
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}
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#endif
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#ifdef FRAGMENT_SHADER
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void main ()
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{
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vec3 t = texture2D(s_t0, tc).rgb;
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t = vc.a * t/((vc.a-1.0)*t + 1.0);
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gl_FragColor = vec4(pow(t, vec3(vc.r))*vc.g + vc.b, 1.0);
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}
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#endif
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