75 lines
1.3 KiB
GLSL
75 lines
1.3 KiB
GLSL
!!ver 130
|
|
!!permu FOG
|
|
!!samps 1
|
|
!!cvardf gl_mono=0
|
|
!!cvardf gl_kdither=0
|
|
|
|
#include "sys/fog.h"
|
|
#ifdef VERTEX_SHADER
|
|
attribute vec2 v_texcoord;
|
|
attribute vec4 v_colour;
|
|
varying vec2 tc;
|
|
varying vec4 vc;
|
|
void main ()
|
|
{
|
|
tc = v_texcoord;
|
|
vc = v_colour;
|
|
gl_Position = ftetransform();
|
|
}
|
|
#endif
|
|
|
|
#ifdef FRAGMENT_SHADER
|
|
varying vec2 tc;
|
|
varying vec4 vc;
|
|
uniform vec4 e_colourident;
|
|
uniform vec4 e_vlscale;
|
|
|
|
vec4 kernel_dither(sampler2D targ, vec2 texc)
|
|
{
|
|
int x = int(mod(gl_FragCoord.x, 2.0));
|
|
int y = int(mod(gl_FragCoord.y, 2.0));
|
|
int index = x + y * 2;
|
|
vec2 coord_ofs;
|
|
vec2 size;
|
|
|
|
size.x = 1.0 / textureSize(targ, 0).x;
|
|
size.y = 1.0 / textureSize(targ, 0).y;
|
|
|
|
if (index == 0)
|
|
coord_ofs = vec2(0.25, 0.0);
|
|
else if (index == 1)
|
|
coord_ofs = vec2(0.50, 0.75);
|
|
else if (index == 2)
|
|
coord_ofs = vec2(0.75, 0.50);
|
|
else if (index == 3)
|
|
coord_ofs = vec2(0.00, 0.25);
|
|
|
|
return texture2D(targ, texc + coord_ofs * size);
|
|
}
|
|
|
|
void main ()
|
|
{
|
|
vec4 col;
|
|
|
|
#if gl_kdither==1
|
|
col = texture2D(s_t0, tc);
|
|
#else
|
|
col = texture2D(s_t0, tc);
|
|
#endif
|
|
|
|
#ifdef MASK
|
|
if (col.a < float(MASK))
|
|
discard;
|
|
#endif
|
|
|
|
col = fog4blend(col * vc * e_colourident * e_vlscale);
|
|
|
|
#if gl_mono==1
|
|
float bw = (col.r + col.g + col.b) / 3.0;
|
|
col.rgb = vec3(bw, bw, bw) * 1.5;
|
|
#endif
|
|
|
|
gl_FragColor = col;
|
|
}
|
|
#endif
|