From 425decdf7e9284d15aa726e3ae96b9942fb0e3ea Mon Sep 17 00:00:00 2001 From: IronClawTrem Date: Sun, 16 Feb 2020 03:40:06 +0000 Subject: create tremded branch --- src/renderergl2/glsl/calclevels4x_fp.glsl | 60 +++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 src/renderergl2/glsl/calclevels4x_fp.glsl (limited to 'src/renderergl2/glsl/calclevels4x_fp.glsl') diff --git a/src/renderergl2/glsl/calclevels4x_fp.glsl b/src/renderergl2/glsl/calclevels4x_fp.glsl new file mode 100644 index 0000000..8246c4b --- /dev/null +++ b/src/renderergl2/glsl/calclevels4x_fp.glsl @@ -0,0 +1,60 @@ +uniform sampler2D u_TextureMap; + +uniform vec4 u_Color; + +uniform vec2 u_InvTexRes; +varying vec2 var_TexCoords; + +const vec3 LUMINANCE_VECTOR = vec3(0.2125, 0.7154, 0.0721); //vec3(0.299, 0.587, 0.114); + +vec3 GetValues(vec2 offset, vec3 current) +{ + vec2 tc = var_TexCoords + u_InvTexRes * offset; + vec3 minAvgMax = texture2D(u_TextureMap, tc).rgb; + +#ifdef FIRST_PASS + + #if defined(USE_PBR) + minAvgMax *= minAvgMax; + #endif + + float lumi = max(dot(LUMINANCE_VECTOR, minAvgMax), 0.000001); + float loglumi = clamp(log2(lumi), -10.0, 10.0); + minAvgMax = vec3(loglumi * 0.05 + 0.5); +#endif + + return vec3(min(current.x, minAvgMax.x), current.y + minAvgMax.y, max(current.z, minAvgMax.z)); +} + +void main() +{ + vec3 current = vec3(1.0, 0.0, 0.0); + +#ifdef FIRST_PASS + current = GetValues(vec2( 0.0, 0.0), current); +#else + current = GetValues(vec2(-1.5, -1.5), current); + current = GetValues(vec2(-0.5, -1.5), current); + current = GetValues(vec2( 0.5, -1.5), current); + current = GetValues(vec2( 1.5, -1.5), current); + + current = GetValues(vec2(-1.5, -0.5), current); + current = GetValues(vec2(-0.5, -0.5), current); + current = GetValues(vec2( 0.5, -0.5), current); + current = GetValues(vec2( 1.5, -0.5), current); + + current = GetValues(vec2(-1.5, 0.5), current); + current = GetValues(vec2(-0.5, 0.5), current); + current = GetValues(vec2( 0.5, 0.5), current); + current = GetValues(vec2( 1.5, 0.5), current); + + current = GetValues(vec2(-1.5, 1.5), current); + current = GetValues(vec2(-0.5, 1.5), current); + current = GetValues(vec2( 0.5, 1.5), current); + current = GetValues(vec2( 1.5, 1.5), current); + + current.y *= 0.0625; +#endif + + gl_FragColor = vec4(current, 1.0f); +} -- cgit