Create color-mangler.glsl

misc/color-mangler.glsl

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+#pragma parameter display_gamma "Display Gamma" 2.2 0.0 10.0 0.1
+#pragma parameter target_gamma "Target Gamma" 2.2 0.0 10.0 0.1
+#pragma parameter sat "Saturation" 1.0 0.0 3.0 0.01
+#pragma parameter lum "Luminance" 1.0 0.0 5.0 0.01
+#pragma parameter cntrst "Contrast" 1.0 0.0 2.0 0.01
+#pragma parameter r "Red" 1.0 0.0 2.0 0.01
+#pragma parameter g "Green" 1.0 0.0 2.0 0.01
+#pragma parameter b "Blue" 1.0 0.0 2.0 0.01
+#pragma parameter rg "Red-Green Tint" 0.0 0.0 1.0 0.005
+#pragma parameter rb "Red-Blue Tint" 0.0 0.0 1.0 0.005
+#pragma parameter gr "Green-Red Tint" 0.0 0.0 1.0 0.005
+#pragma parameter gb "Green-Blue Tint" 0.0 0.0 1.0 0.005
+#pragma parameter br "Blue-Red Tint" 0.0 0.0 1.0 0.005
+#pragma parameter bg "Blue-Green Tint" 0.0 0.0 1.0 0.005
+#pragma parameter blr "Black-Red Tint" 0.0 0.0 1.0 0.005
+#pragma parameter blg "Black-Green Tint" 0.0 0.0 1.0 0.005
+#pragma parameter blb "Black-Blue Tint" 0.0 0.0 1.0 0.005
+#ifdef PARAMETER_UNIFORM
+uniform float display_gamma;
+uniform float target_gamma;
+uniform float sat;
+uniform float lum;
+uniform float cntrst;
+uniform float blr;
+uniform float blg;
+uniform float blb;
+uniform float r;
+uniform float g;
+uniform float b;
+uniform float rg;
+uniform float rb;
+uniform float gr;
+uniform float gb;
+uniform float br;
+uniform float bg;
+#else
+#define display_gamma 2.2
+#define target_gamma 2.2
+#define sat 1.0
+#define lum 1.0
+#define cntrst 1.0
+#define blr 0.0
+#define blg 0.0
+#define blb 0.0
+#define r 1.0
+#define g 1.0
+#define b 1.0
+#define rg 0.0
+#define rb 0.0
+#define gr 0.0
+#define gb 0.0
+#define br 0.0
+#define bg 0.0
+#endif
+
+#if defined(VERTEX)
+
+#if __VERSION__ >= 130
+#define COMPAT_VARYING out
+#define COMPAT_ATTRIBUTE in
+#define COMPAT_TEXTURE texture
+#else
+#define COMPAT_VARYING varying 
+#define COMPAT_ATTRIBUTE attribute 
+#define COMPAT_TEXTURE texture2D
+#endif
+
+#ifdef GL_ES
+#define COMPAT_PRECISION mediump
+#else
+#define COMPAT_PRECISION
+#endif
+
+COMPAT_ATTRIBUTE vec4 VertexCoord;
+COMPAT_ATTRIBUTE vec4 COLOR;
+COMPAT_ATTRIBUTE vec4 TexCoord;
+COMPAT_VARYING vec4 COL0;
+COMPAT_VARYING vec4 TEX0;
+
+vec4 _oPosition1; 
+uniform mat4 MVPMatrix;
+uniform int FrameDirection;
+uniform int FrameCount;
+uniform COMPAT_PRECISION vec2 OutputSize;
+uniform COMPAT_PRECISION vec2 TextureSize;
+uniform COMPAT_PRECISION vec2 InputSize;
+
+void main()
+{
+    vec4 _oColor;
+    vec2 _otexCoord;
+    gl_Position = VertexCoord.x * MVPMatrix[0] + VertexCoord.y * MVPMatrix[1] + VertexCoord.z * MVPMatrix[2] + VertexCoord.w * MVPMatrix[3];
+    _oPosition1 = gl_Position;
+    _oColor = COLOR;
+    _otexCoord = TexCoord.xy;
+    COL0 = COLOR;
+    TEX0.xy = TexCoord.xy;
+}
+
+#elif defined(FRAGMENT)
+
+#if __VERSION__ >= 130
+#define COMPAT_VARYING in
+#define COMPAT_TEXTURE texture
+out vec4 FragColor;
+#else
+#define COMPAT_VARYING varying
+#define FragColor gl_FragColor
+#define COMPAT_TEXTURE texture2D
+#endif
+
+#ifdef GL_ES
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
+precision mediump float;
+#endif
+#define COMPAT_PRECISION mediump
+#else
+#define COMPAT_PRECISION
+#endif
+
+struct output_dummy {
+    vec4 _color;
+};
+
+uniform int FrameDirection;
+uniform int FrameCount;
+uniform COMPAT_PRECISION vec2 OutputSize;
+uniform COMPAT_PRECISION vec2 TextureSize;
+uniform COMPAT_PRECISION vec2 InputSize;
+uniform sampler2D Texture;
+COMPAT_VARYING vec4 TEX0;
+//standard texture sample looks like this: COMPAT_TEXTURE(Texture, TEX0.xy);
+
+void main()
+{
+    output_dummy _OUT;
+
+vec4 screen = pow(COMPAT_TEXTURE(Texture, TEX0.xy), vec4(target_gamma)).rgba; //sample image in linear colorspace
+vec4 avglum = vec4(0.5);
+screen = mix(screen, avglum, (1.0 - cntrst));
+
+mat4 color = mat4(
+r,  gr,  br, blr,
+rg,   g,  bg, blg,
+rb,  gb,   b, blb,
+0.0, 0.0, 0.0, 1.0);
+			  
+mat4 adjust = mat4(
+(1.0 - sat) * 0.3086 + sat, (1.0 - sat) * 0.6094, (1.0 - sat) * 0.0820, 0.0,
+(1.0 - sat) * 0.3086, (1.0 - sat) * 0.6094 + sat, (1.0 - sat) * 0.0820, 0.0,
+(1.0 - sat) * 0.3086, (1.0 - sat) * 0.6094, (1.0 - sat) * 0.0820 + sat, 0.0,
+1.0, 1.0, 1.0, 1.0);
+
+color *= adjust;
+screen = clamp(screen * lum, 0.0, 1.0);
+screen = screen * color;
+screen = pow(screen, vec4(1.0 / display_gamma));
+
+    _OUT._color = screen;
+    FragColor = _OUT._color;
+    return;
+} 
+#endif