173 lines
4.2 KiB
GLSL
173 lines
4.2 KiB
GLSL
//======= Copyright (c) 2015-2020 Vera Visions LLC. All rights reserved. =======
|
|
//
|
|
// Purpose:
|
|
//
|
|
// Lightmapped surface that sticks to walls.
|
|
//
|
|
// diffusemap = albedo (rgba)
|
|
// normalmap = normal (rgb), reflectmask (a)
|
|
//==============================================================================
|
|
|
|
!!ver 110
|
|
!!permu FOG
|
|
!!permu BUMP
|
|
!!permu DELUXE
|
|
!!permu LIGHTSTYLED
|
|
!!samps diffuse
|
|
|
|
!!samps lightmap
|
|
!!samps =BUMP normalmap reflectcube
|
|
!!samps =LIGHTSTYLED lightmap1 lightmap2 lightmap3
|
|
!!samps =DELUXE deluxemap
|
|
!!samps =LIGHTSTYLED =DELUXE deluxemap1 deluxemap2 deluxemap3
|
|
|
|
!!permu FAKESHADOWS
|
|
!!cvardf r_glsl_pcf
|
|
!!cvardf r_fullbright
|
|
!!samps =FAKESHADOWS shadowmap
|
|
|
|
#include "sys/defs.h"
|
|
|
|
// basics
|
|
varying vec2 tex_c;
|
|
varying vec2 lm0;
|
|
|
|
// unfortunately we do support lightstyles
|
|
#if defined(LIGHTSTYLED)
|
|
varying vec2 lm1, lm2, lm3;
|
|
#endif
|
|
|
|
// useful for terrain blending
|
|
varying vec4 vex_color;
|
|
|
|
// dynamic shadows
|
|
#ifdef FAKESHADOWS
|
|
varying vec4 vtexprojcoord;
|
|
#endif
|
|
|
|
#ifdef BUMP
|
|
varying vec3 eyevector;
|
|
varying mat3 invsurface;
|
|
#endif
|
|
|
|
#ifdef VERTEX_SHADER
|
|
void lightmapped_init(void)
|
|
{
|
|
lm0 = v_lmcoord;
|
|
#if defined(LIGHTSTYLED)
|
|
lm1 = v_lmcoord2;
|
|
lm2 = v_lmcoord3;
|
|
lm3 = v_lmcoord4;
|
|
#endif
|
|
}
|
|
|
|
void main ()
|
|
{
|
|
lightmapped_init();
|
|
tex_c = v_texcoord;
|
|
vex_color = v_colour;
|
|
gl_Position = ftetransform();
|
|
|
|
#ifdef FAKESHADOWS
|
|
vtexprojcoord = (l_cubematrix*vec4(v_position.xyz, 1.0));
|
|
#endif
|
|
|
|
#ifdef BUMP
|
|
vec3 eyeminusvertex = e_eyepos - v_position.xyz;
|
|
eyevector.x = dot(eyeminusvertex, v_svector.xyz);
|
|
eyevector.y = dot(eyeminusvertex, v_tvector.xyz);
|
|
eyevector.z = dot(eyeminusvertex, v_normal.xyz);
|
|
invsurface[0] = v_svector;
|
|
invsurface[1] = v_tvector;
|
|
invsurface[2] = v_normal;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#ifdef FRAGMENT_SHADER
|
|
#include "sys/fog.h"
|
|
#include "sys/pcf.h"
|
|
|
|
#if defined(LIGHTSTYLED)
|
|
#define LIGHTMAP0 texture2D(s_lightmap0, lm0).rgb
|
|
#define LIGHTMAP1 texture2D(s_lightmap1, lm1).rgb
|
|
#define LIGHTMAP2 texture2D(s_lightmap2, lm2).rgb
|
|
#define LIGHTMAP3 texture2D(s_lightmap3, lm3).rgb
|
|
#else
|
|
#define LIGHTMAP texture2D(s_lightmap, lm0).rgb
|
|
#endif
|
|
|
|
vec3 lightmap_fragment()
|
|
{
|
|
vec3 lightmaps;
|
|
|
|
#if defined(LIGHTSTYLED)
|
|
lightmaps = LIGHTMAP0 * e_lmscale[0].rgb;
|
|
lightmaps += LIGHTMAP1 * e_lmscale[1].rgb;
|
|
lightmaps += LIGHTMAP2 * e_lmscale[2].rgb;
|
|
lightmaps += LIGHTMAP3 * e_lmscale[3].rgb;
|
|
#else
|
|
lightmaps = LIGHTMAP * e_lmscale.rgb;
|
|
#endif
|
|
return (r_fullbright == 1) ? vec3(1.0, 1.0, 1.0) : lightmaps;
|
|
}
|
|
|
|
vec3 lightmap_fragment(vec3 normal_f)
|
|
{
|
|
#ifndef DELUXE
|
|
return lightmap_fragment();
|
|
#else
|
|
vec3 lightmaps;
|
|
|
|
#if defined(LIGHTSTYLED)
|
|
lightmaps = LIGHTMAP0 * e_lmscale[0].rgb * dot(normal_f, (texture2D(s_deluxemap0, lm0).rgb - 0.5) * 2.0);
|
|
lightmaps += LIGHTMAP1 * e_lmscale[1].rgb * dot(normal_f, (texture2D(s_deluxemap1, lm1).rgb - 0.5) * 2.0);
|
|
lightmaps += LIGHTMAP2 * e_lmscale[2].rgb * dot(normal_f, (texture2D(s_deluxemap2, lm2).rgb - 0.5) * 2.0);
|
|
lightmaps += LIGHTMAP3 * e_lmscale[3].rgb * dot(normal_f, (texture2D(s_deluxemap3, lm3).rgb - 0.5) * 2.0);
|
|
#else
|
|
lightmaps = LIGHTMAP * e_lmscale.rgb * dot(normal_f, (texture2D(s_deluxemap, lm0).rgb - 0.5) * 2.0);
|
|
#endif
|
|
|
|
return (r_fullbright == 1) ? vec3(1.0, 1.0, 1.0) : lightmaps;
|
|
#endif
|
|
}
|
|
|
|
void main (void)
|
|
{
|
|
vec4 diffuse_f;
|
|
float alpha;
|
|
|
|
diffuse_f = texture2D(s_diffuse, tex_c);
|
|
diffuse_f.rgb *= diffuse_f.a;
|
|
|
|
#ifdef FAKESHADOWS
|
|
diffuse_f.rgb *= ShadowmapFilter(s_shadowmap, vtexprojcoord);
|
|
#endif
|
|
|
|
// the lighting stage for the world
|
|
#if defined(BUMP)
|
|
vec3 cube_c;
|
|
vec3 env_f;
|
|
vec3 normal_f = normalize(texture2D(s_normalmap, tex_c).rgb - 0.5);
|
|
float refl = texture2D(s_normalmap, tex_c).a;
|
|
diffuse_f.rgb *= lightmap_fragment(normal_f);
|
|
|
|
cube_c = reflect(normalize(-eyevector), normal_f.rgb);
|
|
cube_c = cube_c.x * invsurface[0] + cube_c.y * invsurface[1] + cube_c.z * invsurface[2];
|
|
cube_c = (m_model * vec4(cube_c.xyz, 0.0)).xyz;
|
|
env_f = textureCube(s_reflectcube, cube_c).rgb * (e_lmscale.rgb * 0.25);
|
|
diffuse_f.rgb = mix(env_f, diffuse_f.rgb, refl);
|
|
#else
|
|
diffuse_f.rgb *= lightmap_fragment();
|
|
#endif
|
|
|
|
// start blend at half-way point
|
|
alpha = diffuse_f.a;
|
|
|
|
if (alpha > 1.0)
|
|
alpha = 1.0;
|
|
|
|
gl_FragColor = vec4(fog3(diffuse_f.rgb), alpha);
|
|
}
|
|
#endif
|