Removed obsolete gamma correct shader used on macOS only

src/gl/renderer/gl_renderstate.h

@@ -37,7 +37,6 @@ enum EEffect
 	EFF_SPHEREMAP,
 	EFF_BURN,
 	EFF_STENCIL,
-	EFF_GAMMACORRECTION,
 
 	MAX_EFFECTS
 };

src/gl/shaders/gl_shader.cpp

@@ -395,7 +395,6 @@ static const FEffectShader effectshaders[]=
 	{ "spheremap", "shaders/glsl/main.vp", "shaders/glsl/main.fp", "shaders/glsl/func_normal.fp", "#define SPHEREMAP\n#define NO_ALPHATEST\n" },
 	{ "burn", "shaders/glsl/main.vp", "shaders/glsl/burn.fp", NULL, "#define SIMPLE\n#define NO_ALPHATEST\n" },
 	{ "stencil", "shaders/glsl/main.vp", "shaders/glsl/stencil.fp", NULL, "#define SIMPLE\n#define NO_ALPHATEST\n" },
-	{ "gammacorrection", "shaders/glsl/main.vp", "shaders/glsl/gammacorrection.fp", NULL, "#define SIMPLE\n" },
 };
 
 

wadsrc/static/shaders/glsl/gammacorrection.fp

@@ -1,30 +0,0 @@
-uniform sampler2D tex;
-
-in vec4 vTexCoord;
-in vec4 vColor;
-
-out vec4 FragColor;
-
-void main()
-{
-	vec3 color = texture(tex, vTexCoord.st).rgb;
-
-//	/* DEBUG */ if (vTexCoord.x > 0.5)
-	{
-		// Apply contrast
-		float contrast = clamp(vColor.y, 0.1, 3.0);
-		color = color.rgb * contrast - (contrast - 1.0) * 0.5;
-
-		// Apply gamma
-		float gamma = clamp(vColor.x, 0.1, 4.0);
-		color = sign(color) * pow(abs(color), vec3(1.0 / gamma));
-
-		// Apply brightness
-		float brightness = clamp(vColor.z, -0.8, 0.8);
-		color += brightness * 0.5;
-
-		color = clamp(color, 0.0, 1.0);
-	}
-
-	FragColor = vec4(color, 1.0);
-}