Bliss-Shader/shaders/shadow.fsh
Xonk 216db6b84d Latest Dev
its very scary to look at
2023-01-12 15:28:19 -05:00

30 lines
1007 B
GLSL

#version 120
#extension GL_ARB_shader_texture_lod : enable
#extension GL_EXT_gpu_shader4 : enable
#include "lib/settings.glsl"
varying vec2 texcoord;
uniform sampler2D tex;
uniform sampler2D noisetex;
uniform int frameCounter;
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float R2_dither(){
vec2 alpha = vec2(0.75487765, 0.56984026);
return fract(alpha.x * gl_FragCoord.x + alpha.y * gl_FragCoord.y + 1.0/1.6180339887 ) ;
}
void main() {
gl_FragData[0] = texture2D(tex,texcoord.xy);
#ifdef SHADOW_DISABLE_ALPHA_MIPMAPS
gl_FragData[0].a = texture2DLod(tex,texcoord.xy,0).a;
#endif
#ifdef Stochastic_Transparent_Shadows
gl_FragData[0].a = float(gl_FragData[0].a >= R2_dither());
#endif
}