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/shadowfill_fp.glsl | 41 +++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 src/renderergl2/glsl/shadowfill_fp.glsl (limited to 'src/renderergl2/glsl/shadowfill_fp.glsl') diff --git a/src/renderergl2/glsl/shadowfill_fp.glsl b/src/renderergl2/glsl/shadowfill_fp.glsl new file mode 100644 index 0000000..150f3d1 --- /dev/null +++ b/src/renderergl2/glsl/shadowfill_fp.glsl @@ -0,0 +1,41 @@ +uniform vec4 u_LightOrigin; +uniform float u_LightRadius; + +varying vec3 var_Position; + +void main() +{ +#if defined(USE_DEPTH) + float depth = length(u_LightOrigin.xyz - var_Position) / u_LightRadius; + #if 0 + // 32 bit precision + const vec4 bitSh = vec4( 256 * 256 * 256, 256 * 256, 256, 1); + const vec4 bitMsk = vec4( 0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0); + + vec4 comp; + comp = depth * bitSh; + comp.xyz = fract(comp.xyz); + comp -= comp.xxyz * bitMsk; + gl_FragColor = comp; + #endif + + #if 1 + // 24 bit precision + const vec3 bitSh = vec3( 256 * 256, 256, 1); + const vec3 bitMsk = vec3( 0, 1.0 / 256.0, 1.0 / 256.0); + + vec3 comp; + comp = depth * bitSh; + comp.xy = fract(comp.xy); + comp -= comp.xxy * bitMsk; + gl_FragColor = vec4(comp, 1.0); + #endif + + #if 0 + // 8 bit precision + gl_FragColor = vec4(depth, depth, depth, 1); + #endif +#else + gl_FragColor = vec4(0, 0, 0, 1); +#endif +} -- cgit