120 lines
2.9 KiB
GLSL
120 lines
2.9 KiB
GLSL
!!permu FULLBRIGHT
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!!permu UPPERLOWER
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//!!permu FRAMEBLEND
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//!!permu SKELETAL
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!!permu FOG
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!!permu BUMP
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!!permu REFLECTCUBEMASK
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!!cvarf r_glsl_offsetmapping=0
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!!cvarf r_glsl_offsetmapping_scale=0.04
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!!cvarf gl_specular=0
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!!cvarb r_fog_exp2=true
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!!samps diffuse normalmap upper lower specular fullbright reflectcube reflectmask
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#include "sys/defs.h"
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//standard shader used for models.
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//must support skeletal and 2-way vertex blending or Bad Things Will Happen.
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//the vertex shader is responsible for calculating lighting values.
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layout(location=0) varying vec2 tcbase;
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layout(location=1) varying vec3 light;
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#if defined(SPECULAR) || defined(OFFSETMAPPING)
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layout(location=2) varying vec3 eyevector;
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#endif
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layout(location=3) varying mat3 invsurface;
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#ifdef VERTEX_SHADER
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#include "sys/skeletal.h"
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void main ()
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{
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vec3 n;
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if (SPECULAR||OFFSETMAPPING||REFLECTCUBEMASK)
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{
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vec3 s, t, w;
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gl_Position = skeletaltransform_wnst(w,n,s,t);
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vec3 eyeminusvertex = e_eyepos - w.xyz;
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eyevector.x = dot(eyeminusvertex, s.xyz);
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eyevector.y = dot(eyeminusvertex, t.xyz);
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eyevector.z = dot(eyeminusvertex, n.xyz);
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if (REFLECTCUBEMASK)
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{
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invsurface[0] = s;
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invsurface[0] = t;
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invsurface[0] = n;
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}
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}
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else
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{
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gl_Position = skeletaltransform_n(n);
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}
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float d = dot(n,e_light_dir);
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if (d < 0.0) //vertex shader. this might get ugly, but I don't really want to make it per vertex.
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d = 0.0; //this avoids the dark side going below the ambient level.
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light = e_light_ambient + (dot(n,e_light_dir)*e_light_mul);
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tcbase = v_texcoord;
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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/offsetmapping.h"
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void main ()
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{
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vec4 col, sp;
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vec2 tc;
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if (OFFSETMAPPING)
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tc = offsetmap(s_normalmap, tcbase, eyevector);
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else
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tc = tcbase;
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col = texture2D(s_diffuse, tc);
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if (UPPERLOWER)
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{
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vec4 uc = texture2D(s_upper, tc);
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col.rgb += uc.rgb*e_uppercolour*uc.a;
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vec4 lc = texture2D(s_lower, tc);
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col.rgb += lc.rgb*e_lowercolour*lc.a;
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}
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vec3 bumps = vec3(0,0,1);
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if (BUMP || SPECULAR)
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{
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bumps = normalize(vec3(texture2D(s_normalmap, tc)) - 0.5);
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vec4 specs = texture2D(s_specular, tc);
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vec3 halfdir = normalize(normalize(eyevector) + vec3(0.0, 0.0, 1.0));
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float spec = pow(max(dot(halfdir, bumps), 0.0), 32.0 * specs.a);
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col.rgb += cvar_gl_specular * spec * specs.rgb;
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}
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if (REFLECTCUBEMASK)
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{
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vec3 rtc = reflect(-eyevector, bumps);
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rtc = rtc.x*invsurface[0] + rtc.y*invsurface[1] + rtc.z*invsurface[2];
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rtc = (m_model * vec4(rtc.xyz,0.0)).xyz;
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col.rgb += texture2D(s_reflectmask, tc).rgb * textureCube(s_reflectcube, rtc).rgb;
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}
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col.rgb *= light;
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if (FULLBRIGHT)
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{
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vec4 fb = texture2D(s_fullbright, tc);
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// col.rgb = mix(col.rgb, fb.rgb, fb.a);
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col.rgb += fb.rgb * fb.a;
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}
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gl_FragColor = fog4(col * e_colourident);
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}
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#endif
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