diff options
Diffstat (limited to 'drivers/gles3/shaders/tonemap.glsl')
| -rw-r--r-- | drivers/gles3/shaders/tonemap.glsl | 123 |
1 files changed, 78 insertions, 45 deletions
diff --git a/drivers/gles3/shaders/tonemap.glsl b/drivers/gles3/shaders/tonemap.glsl index c6dfc6917d..988e31d1ea 100644 --- a/drivers/gles3/shaders/tonemap.glsl +++ b/drivers/gles3/shaders/tonemap.glsl @@ -144,6 +144,38 @@ vec4 texture2D_bicubic(sampler2D tex, vec2 uv,int p_lod) #endif +vec3 tonemap_filmic(vec3 color,float white) { + + float A = 0.15; + float B = 0.50; + float C = 0.10; + float D = 0.20; + float E = 0.02; + float F = 0.30; + float W = 11.2; + + vec3 coltn = ((color*(A*color+C*B)+D*E)/(color*(A*color+B)+D*F))-E/F; + float whitetn = ((white*(A*white+C*B)+D*E)/(white*(A*white+B)+D*F))-E/F; + + return coltn/whitetn; + +} + +vec3 tonemap_aces(vec3 color) { + float a = 2.51f; + float b = 0.03f; + float c = 2.43f; + float d = 0.59f; + float e = 0.14f; + return color = clamp((color*(a*color+b))/(color*(c*color+d)+e),vec3(0.0),vec3(1.0)); +} + +vec3 tonemap_reindhart(vec3 color,vec3 white) { + + return ( color * ( 1.0 + ( color / ( white) ) ) ) / ( 1.0 + color ); +} + + void main() { ivec2 coord = ivec2(gl_FragCoord.xy); @@ -157,8 +189,11 @@ void main() { color*=exposure; - #if defined(USE_GLOW_LEVEL1) || defined(USE_GLOW_LEVEL2) || defined(USE_GLOW_LEVEL3) || defined(USE_GLOW_LEVEL4) || defined(USE_GLOW_LEVEL5) || defined(USE_GLOW_LEVEL6) || defined(USE_GLOW_LEVEL7) +#define USING_GLOW +#endif + +#if defined(USING_GLOW) vec3 glow = vec3(0.0); #ifdef USE_GLOW_LEVEL1 @@ -193,85 +228,83 @@ void main() { glow *= glow_intensity; +#endif -#ifdef USE_GLOW_REPLACE +#ifdef USE_REINDHART_TONEMAPPER - color.rgb = glow; + color.rgb = tonemap_reindhart(color.rgb,white); + +# if defined(USING_GLOW) + glow = tonemap_reindhart(glow,white); +# endif #endif -#ifdef USE_GLOW_SCREEN +#ifdef USE_FILMIC_TONEMAPPER - color.rgb = clamp((color.rgb + glow) - (color.rgb * glow), 0.0, 1.0); + color.rgb = tonemap_filmic(color.rgb,white); + +# if defined(USING_GLOW) + glow = tonemap_filmic(glow,white); +# endif #endif -#ifdef USE_GLOW_SOFTLIGHT +#ifdef USE_ACES_TONEMAPPER - { + color.rgb = tonemap_aces(color.rgb); - glow = (glow * 0.5) + 0.5; - color.r = (glow.r <= 0.5) ? (color.r - (1.0 - 2.0 * glow.r) * color.r * (1.0 - color.r)) : (((glow.r > 0.5) && (color.r <= 0.25)) ? (color.r + (2.0 * glow.r - 1.0) * (4.0 * color.r * (4.0 * color.r + 1.0) * (color.r - 1.0) + 7.0 * color.r)) : (color.r + (2.0 * glow.r - 1.0) * (sqrt(color.r) - color.r))); - color.g = (glow.g <= 0.5) ? (color.g - (1.0 - 2.0 * glow.g) * color.g * (1.0 - color.g)) : (((glow.g > 0.5) && (color.g <= 0.25)) ? (color.g + (2.0 * glow.g - 1.0) * (4.0 * color.g * (4.0 * color.g + 1.0) * (color.g - 1.0) + 7.0 * color.g)) : (color.g + (2.0 * glow.g - 1.0) * (sqrt(color.g) - color.g))); - color.b = (glow.b <= 0.5) ? (color.b - (1.0 - 2.0 * glow.b) * color.b * (1.0 - color.b)) : (((glow.b > 0.5) && (color.b <= 0.25)) ? (color.b + (2.0 * glow.b - 1.0) * (4.0 * color.b * (4.0 * color.b + 1.0) * (color.b - 1.0) + 7.0 * color.b)) : (color.b + (2.0 * glow.b - 1.0) * (sqrt(color.b) - color.b))); - } +# if defined(USING_GLOW) + glow = tonemap_aces(glow); +# endif #endif -#if !defined(USE_GLOW_SCREEN) && !defined(USE_GLOW_SOFTLIGHT) && !defined(USE_GLOW_REPLACE) - color.rgb+=glow; -#endif - + //regular Linear -> SRGB conversion + vec3 a = vec3(0.055); + color.rgb = mix( (vec3(1.0)+a)*pow(color.rgb,vec3(1.0/2.4))-a , 12.92*color.rgb , lessThan(color.rgb,vec3(0.0031308))); +#if defined(USING_GLOW) + glow = mix( (vec3(1.0)+a)*pow(glow,vec3(1.0/2.4))-a , 12.92*glow , lessThan(glow,vec3(0.0031308))); #endif +//glow needs to be added in SRGB space (together with image space effects) -#ifdef USE_REINDHART_TONEMAPPER + color.rgb = clamp(color.rgb,0.0,1.0); - { - color.rgb = ( color.rgb * ( 1.0 + ( color.rgb / ( white) ) ) ) / ( 1.0 + color.rgb ); - - } +#if defined(USING_GLOW) + glow = clamp(glow,0.0,1.0); #endif -#ifdef USE_FILMIC_TONEMAPPER +#ifdef USE_GLOW_REPLACE - { + color.rgb = glow; - float A = 0.15; - float B = 0.50; - float C = 0.10; - float D = 0.20; - float E = 0.02; - float F = 0.30; - float W = 11.2; +#endif - vec3 coltn = ((color.rgb*(A*color.rgb+C*B)+D*E)/(color.rgb*(A*color.rgb+B)+D*F))-E/F; - float whitetn = ((white*(A*white+C*B)+D*E)/(white*(A*white+B)+D*F))-E/F; +#ifdef USE_GLOW_SCREEN - color.rgb=coltn/whitetn; + color.rgb = max((color.rgb + glow) - (color.rgb * glow), vec3(0.0)); - } #endif -#ifdef USE_ACES_TONEMAPPER +#ifdef USE_GLOW_SOFTLIGHT { - float a = 2.51f; - float b = 0.03f; - float c = 2.43f; - float d = 0.59f; - float e = 0.14f; - color.rgb = clamp((color.rgb*(a*color.rgb+b))/(color.rgb*(c*color.rgb+d)+e),vec3(0.0),vec3(1.0)); + + glow = (glow * 0.5) + 0.5; + color.r = (glow.r <= 0.5) ? (color.r - (1.0 - 2.0 * glow.r) * color.r * (1.0 - color.r)) : (((glow.r > 0.5) && (color.r <= 0.25)) ? (color.r + (2.0 * glow.r - 1.0) * (4.0 * color.r * (4.0 * color.r + 1.0) * (color.r - 1.0) + 7.0 * color.r)) : (color.r + (2.0 * glow.r - 1.0) * (sqrt(color.r) - color.r))); + color.g = (glow.g <= 0.5) ? (color.g - (1.0 - 2.0 * glow.g) * color.g * (1.0 - color.g)) : (((glow.g > 0.5) && (color.g <= 0.25)) ? (color.g + (2.0 * glow.g - 1.0) * (4.0 * color.g * (4.0 * color.g + 1.0) * (color.g - 1.0) + 7.0 * color.g)) : (color.g + (2.0 * glow.g - 1.0) * (sqrt(color.g) - color.g))); + color.b = (glow.b <= 0.5) ? (color.b - (1.0 - 2.0 * glow.b) * color.b * (1.0 - color.b)) : (((glow.b > 0.5) && (color.b <= 0.25)) ? (color.b + (2.0 * glow.b - 1.0) * (4.0 * color.b * (4.0 * color.b + 1.0) * (color.b - 1.0) + 7.0 * color.b)) : (color.b + (2.0 * glow.b - 1.0) * (sqrt(color.b) - color.b))); } #endif - //regular Linear -> SRGB conversion - vec3 a = vec3(0.055); - color.rgb = mix( (vec3(1.0)+a)*pow(color.rgb,vec3(1.0/2.4))-a , 12.92*color.rgb , lessThan(color.rgb,vec3(0.0031308))); - +#if defined(USING_GLOW) && !defined(USE_GLOW_SCREEN) && !defined(USE_GLOW_SOFTLIGHT) && !defined(USE_GLOW_REPLACE) + //additive + color.rgb+=glow; +#endif #ifdef USE_BCS |