170 lines
3.7 KiB
GLSL
170 lines
3.7 KiB
GLSL
//======= Copyright (c) 2015-2020 Vera Visions LLC. All rights reserved. =======
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//
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// Purpose:
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//
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// Blending terrain and masking its edges for a smooth transition into alpha.
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//==============================================================================
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!!ver 110
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!!permu FOG
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!!permu BUMP
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!!permu DELUXE
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!!permu UPPERLOWER
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!!samps diffuse normalmap
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!!samps lightmap
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!!samps =LIGHTSTYLED lightmap1 lightmap2 lightmap3
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!!samps =DELUXE deluxemap
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!!samps =LIGHTSTYLED =DELUXE deluxemap1 deluxemap2 deluxemap3
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!!samps =UPPERLOWER upper
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!!permu FAKESHADOWS
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!!cvardf r_glsl_pcf
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!!samps =FAKESHADOWS shadowmap
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!!cvardf r_skipDiffuse
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!!cvardf r_skipLightmap
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!!cvardf r_skipNormal
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#include "sys/defs.h"
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varying vec2 tex_c;
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varying vec4 vex_color;
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varying vec2 lm0;
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#ifdef LIGHTSTYLED
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varying vec2 lm1, lm2, lm3;
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#endif
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#ifdef FAKESHADOWS
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varying vec4 vtexprojcoord;
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#endif
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#ifdef VERTEX_SHADER
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void lightmapped_init(void)
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{
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lm0 = v_lmcoord;
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#ifdef LIGHTSTYLED
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lm1 = v_lmcoord2;
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lm2 = v_lmcoord3;
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lm3 = v_lmcoord4;
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#endif
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}
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void main ( void )
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{
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lightmapped_init();
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tex_c = v_texcoord;
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vex_color = v_colour;
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gl_Position = ftetransform();
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#ifdef FAKESHADOWS
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vtexprojcoord = (l_cubematrix*vec4(v_position.xyz, 1.0));
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#endif
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}
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#endif
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#ifdef FRAGMENT_SHADER
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#include "sys/fog.h"
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#include "sys/pcf.h"
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#if r_skipLightmap==0
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#ifdef LIGHTSTYLED
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#define LIGHTMAP0 texture2D(s_lightmap0, lm0).rgb
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#define LIGHTMAP1 texture2D(s_lightmap1, lm1).rgb
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#define LIGHTMAP2 texture2D(s_lightmap2, lm2).rgb
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#define LIGHTMAP3 texture2D(s_lightmap3, lm3).rgb
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#else
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#define LIGHTMAP texture2D(s_lightmap, lm0).rgb
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#endif
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#else
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#ifdef LIGHTSTYLED
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#define LIGHTMAP0 vec3(0.5,0.5,0.5)
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#define LIGHTMAP1 vec3(0.5,0.5,0.5)
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#define LIGHTMAP2 vec3(0.5,0.5,0.5)
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#define LIGHTMAP3 vec3(0.5,0.5,0.5)
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#else
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#define LIGHTMAP vec3(0.5,0.5,0.5)
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#endif
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#endif
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vec3 lightmap_fragment()
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{
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vec3 lightmaps;
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#ifdef LIGHTSTYLED
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lightmaps = LIGHTMAP0 * e_lmscale[0].rgb;
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lightmaps += LIGHTMAP1 * e_lmscale[1].rgb;
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lightmaps += LIGHTMAP2 * e_lmscale[2].rgb;
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lightmaps += LIGHTMAP3 * e_lmscale[3].rgb;
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#else
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lightmaps = LIGHTMAP * e_lmscale.rgb;
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#endif
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return lightmaps;
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}
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#if r_skipNormal==0
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vec3 lightmap_fragment(vec3 normal_f)
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{
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#ifndef DELUXE
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return lightmap_fragment();
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#else
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vec3 lightmaps;
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#if defined(LIGHTSTYLED)
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lightmaps = LIGHTMAP0 * e_lmscale[0].rgb * dot(normal_f, (texture2D(s_deluxemap0, lm0).rgb - 0.5) * 2.0);
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lightmaps += LIGHTMAP1 * e_lmscale[1].rgb * dot(normal_f, (texture2D(s_deluxemap1, lm1).rgb - 0.5) * 2.0);
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lightmaps += LIGHTMAP2 * e_lmscale[2].rgb * dot(normal_f, (texture2D(s_deluxemap2, lm2).rgb - 0.5) * 2.0);
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lightmaps += LIGHTMAP3 * e_lmscale[3].rgb * dot(normal_f, (texture2D(s_deluxemap3, lm3).rgb - 0.5) * 2.0);
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#else
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lightmaps = LIGHTMAP * e_lmscale.rgb * dot(normal_f, (texture2D(s_deluxemap, lm0).rgb - 0.5) * 2.0);
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#endif
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return lightmaps;
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#endif
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}
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#endif
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void main ( void )
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{
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#if r_skipDiffuse==0
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vec3 diffuse_f = texture2D(s_diffuse, tex_c).rgb;
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#else
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vec3 diffuse_f = vec3(1.0,1.0,1.0);
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#endif
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float bw = 1.0 - (diffuse_f.r + diffuse_f.g + diffuse_f.b) / 3.0;
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vec4 vcol = vex_color;
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#if r_skipNormal==0
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vec3 normal_f;
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normal_f = normalize(texture2D(s_normalmap, tex_c).rgb - 0.5);
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#endif
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if (vcol.a < 1.0) {
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if (bw > vcol.a) {
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discard;
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}
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}
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#if r_skipNormal==0
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diffuse_f.rgb *= lightmap_fragment(normal_f);
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#else
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diffuse_f.rgb *= lightmap_fragment();
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#endif
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#ifdef FAKESHADOWS
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diffuse_f *= ShadowmapFilter(s_shadowmap, vtexprojcoord);
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#endif
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#if defined(UPPERLOWER)
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diffuse_f.rgb *= (texture2D(s_upper, tex_c * 4.0).rgb + 0.5);
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#endif
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gl_FragColor = vec4(fog3(diffuse_f), 1.0);
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}
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#endif
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