shaders/scene_override.h

   1 #ifndef SHADER_scene_override_H
   2 #define SHADER_scene_override_H
   3 static void shader_scene_override_link(void);
   4 static void shader_scene_override_register(void);
   5 static struct vg_shader _shader_scene_override = {
   6    .name = "scene_override",
   7    .link = shader_scene_override_link,
   8    .vs =
   9 {
  10 .orig_file = "shaders/scene_override.vs",
  11 .static_src =
  12 "layout (location=0) in vec3  a_co;\n"
  13 "layout (location=1) in vec4  a_norm;\n"
  14 "layout (location=2) in vec2  a_uv;\n"
  15 "\n"
  16 "#line       1        1 \n"
  17 "const float k_motion_lerp_amount = 0.01;\n"
  18 "\n"
  19 "#line      2        0 \n"
  20 "\n"
  21 "out vec3 aMotionVec0;\n"
  22 "out vec3 aMotionVec1;\n"
  23 "\n"
  24 "void vs_motion_out( vec4 vproj0, vec4 vproj1 )\n"
  25 "{\n"
  26 "   // This magically solves some artifacting errors!\n"
  27 "   //\n"
  28 "   vproj1 = vproj0*(1.0-k_motion_lerp_amount) + vproj1*k_motion_lerp_amount;\n"
  29 "\n"
  30 "   aMotionVec0 = vec3( vproj0.xy, vproj0.w );\n"
  31 "   aMotionVec1 = vec3( vproj1.xy, vproj1.w );\n"
  32 "}\n"
  33 "\n"
  34 "#line      6        0 \n"
  35 "\n"
  36 "uniform mat4x3 uMdl;\n"
  37 "uniform mat4   uPv;\n"
  38 "uniform mat4   uPvmPrev;\n"
  39 "uniform mat3   uNormalMtx;\n"
  40 "\n"
  41 "out vec2 aUv;\n"
  42 "out vec4 aNorm;\n"
  43 "out vec3 aCo;\n"
  44 "out vec3 aWorldCo;\n"
  45 "\n"
  46 "void main()\n"
  47 "{\n"
  48 "   vec3 world_pos0 = uMdl     * vec4( a_co, 1.0 );\n"
  49 "   vec4 vproj0     = uPv      * vec4( world_pos0, 1.0 );\n"
  50 "   vec4 vproj1     = uPvmPrev * vec4( a_co, 1.0 );\n"
  51 "\n"
  52 "   vs_motion_out( vproj0, vproj1 );\n"
  53 "\n"
  54 "   gl_Position = vproj0;\n"
  55 "\n"
  56 "   aUv = a_uv;\n"
  57 "   aNorm = vec4( uNormalMtx * a_norm.xyz, a_norm.w );\n"
  58 "   aCo = a_co;\n"
  59 "   aWorldCo = world_pos0;\n"
  60 "}\n"
  61 ""},
  62    .fs =
  63 {
  64 .orig_file = "shaders/scene_override.fs",
  65 .static_src =
  66 "uniform sampler2D uTexGarbage;\n"
  67 "uniform sampler2D uTexMain;\n"
  68 "uniform vec3 uCamera;\n"
  69 "uniform vec4 uPlane;\n"
  70 "\n"
  71 "uniform vec4 uPlayerPos; /* w: distance to uSpawnPos */\n"
  72 "uniform vec4 uSpawnPos;  /* w: inverse distance to uPlayerPos */\n"
  73 "uniform bool uAlphatest;\n"
  74 "uniform vec4 uMapInfo; /* x: min, y: max, z: iso line amount */\n"
  75 "\n"
  76 "#line       1        1 \n"
  77 "// :D\n"
  78 "const float CLEARSKIES_LIGHT_DOT_MIN = 0.0;\n"
  79 "\n"
  80 "#line     12        0 \n"
  81 "#line       1        2 \n"
  82 "// :D\n"
  83 "\n"
  84 "in vec2 aUv;\n"
  85 "in vec4 aNorm;\n"
  86 "in vec3 aCo;\n"
  87 "in vec3 aWorldCo;\n"
  88 "\n"
  89 "#line       1        1 \n"
  90 "layout (location = 0) out vec4 oColour;\n"
  91 "\n"
  92 "// OpenGL wiki: Recommends do not use vec3 because of drivers. hence the v4s...\n"
  93 "layout (std140) uniform ub_world_lighting\n"
  94 "{\n"
  95 "   vec4 g_cube_min;\n"
  96 "   vec4 g_cube_inv_range;\n"
  97 "\n"
  98 "   vec4 g_water_plane;\n"
  99 "   vec4 g_depth_bounds;\n"
 100 "\n"
 101 "   vec4 g_daysky_colour;\n"
 102 "   vec4 g_nightsky_colour;\n"
 103 "   vec4 g_sunset_colour;\n"
 104 "   vec4 g_ambient_colour;\n"
 105 "   vec4 g_sunset_ambient;\n"
 106 "   vec4 g_sun_colour;\n"
 107 "   vec4 g_sun_dir;\n"
 108 "   vec4 g_board_0;\n"
 109 "   vec4 g_board_1;\n"
 110 "\n"
 111 "   float g_water_fog;\n"
 112 "   float g_time;\n"
 113 "   float g_realtime;\n"
 114 "   float g_shadow_length;\n"
 115 "   float g_shadow_spread;\n"
 116 "\n"
 117 "   float g_time_of_day;\n"
 118 "   float g_day_phase;\n"
 119 "   float g_sunset_phase;\n"
 120 "\n"
 121 "   int g_light_preview;\n"
 122 "   int g_shadow_samples;\n"
 123 "\n"
 124 "   int g_debug_indices;\n"
 125 "   int g_debug_complexity;\n"
 126 "};\n"
 127 "\n"
 128 "uniform sampler2D g_world_depth;\n"
 129 "uniform samplerBuffer uLightsArray;\n"
 130 "uniform usampler3D uLightsIndex;\n"
 131 "\n"
 132 "#line       1        1 \n"
 133 "//const vec3  DAYSKY_COLOUR   = vec3( 0.37, 0.54, 0.97 );\n"
 134 "//const vec3  NIGHTSKY_COLOUR = vec3( 0.03, 0.05, 0.20 );\n"
 135 "//const vec3  SUNSET_COLOUR   = vec3( 1.00, 0.32, 0.01 );\n"
 136 "//const vec3  AMBIENT_COLOUR  = vec3( 0.13, 0.17, 0.35 );\n"
 137 "//const vec3  SUNSET_AMBIENT  = vec3( 0.25, 0.17, 0.51 );\n"
 138 "//const vec3  SUN_COLOUR      = vec3( 1.10, 0.89, 0.35 );\n"
 139 "\n"
 140 "const float SUN_ANGLE       = 0.0001;\n"
 141 "const float PI              = 3.14159265358979323846264;\n"
 142 "\n"
 143 "//struct world_info\n"
 144 "//{\n"
 145 "//   float time,\n"
 146 "//         time_of_day,\n"
 147 "//         day_phase,\n"
 148 "//         sunset_phase;\n"
 149 "//   \n"
 150 "//   vec3 sun_dir;\n"
 151 "//};\n"
 152 "\n"
 153 "vec3 rand33(vec3 p3)\n"
 154 "{\n"
 155 "       p3 = fract(p3 * vec3(.1031, .1030, .0973));\n"
 156 "   p3 += dot(p3, p3.yxz+33.33);\n"
 157 "   return fract((p3.xxy + p3.yxx)*p3.zyx);\n"
 158 "}\n"
 159 "\n"
 160 "float stars( vec3 rd, float rr, float size ){\n"
 161 "   vec3 co = rd * rr;\n"
 162 "\n"
 163 "   float a = atan(co.y, length(co.xz)) + 4.0 * PI;\n"
 164 "\n"
 165 "   float spaces = 1.0 / rr;\n"
 166 "   size = (rr * 0.0015) * fwidth(a) * 1000.0 * size;\n"
 167 "   a -= mod(a, spaces) - spaces * 0.5;\n"
 168 "\n"
 169 "   float count = floor(sqrt(pow(rr, 2.0) * (1.0 - pow(sin(a), 2.0))) * 3.0);\n"
 170 "   \n"
 171 "   float plane = atan(co.z, co.x) + 4.0 * PI;\n"
 172 "   plane = plane - mod(plane, PI / count);\n"
 173 "\n"
 174 "   vec2 delta = rand33(vec3(plane, a, 0.0)).xy;\n"
 175 "\n"
 176 "   float level = sin(a + spaces * (delta.y - 0.5) * (1.0 - size)) * rr;\n"
 177 "   float ydist = sqrt(rr * rr - level * level);\n"
 178 "   float angle = plane + (PI * (delta.x * (1.0-size) + size * 0.5) / count);\n"
 179 "   vec3 center = vec3(cos(angle) * ydist, level, sin(angle) * ydist);\n"
 180 "   float star = smoothstep(size, 0.0, distance(center, co));\n"
 181 "   return star;\n"
 182 "}\n"
 183 "\n"
 184 "float luminance( vec3 v )\n"
 185 "{\n"
 186 "   return dot( v, vec3(0.2126, 0.7152, 0.0722) );\n"
 187 "}\n"
 188 "\n"
 189 "vec3 clearskies_ambient( vec3 dir )\n"
 190 "{\n"
 191 "   float sun_azimuth  = g_sunset_phase * (dot( dir.xz, g_sun_dir.xz )*0.4+0.6);\n"
 192 "   float sky_gradient = dir.y;\n"
 193 "   \n"
 194 "   /* Blend phase colours */\n"
 195 "   vec3 ambient  = g_daysky_colour.rgb   * (g_day_phase-g_sunset_phase*0.1);\n"
 196 "        ambient += g_sunset_colour.rgb   * (1.0-dir.y*0.5)*sun_azimuth;\n"
 197 "        ambient += g_nightsky_colour.rgb * (1.0-g_day_phase);\n"
 198 "   \n"
 199 "   /* Add gradient */\n"
 200 "        ambient -= sky_gradient * luminance(ambient);\n"
 201 "        \n"
 202 "   return ambient;\n"
 203 "}\n"
 204 "\n"
 205 "vec3 clearskies_sky( vec3 ray_dir )\n"
 206 "{\n"
 207 "   ray_dir.y = abs( ray_dir.y );\n"
 208 "   vec3 sky_colour  = clearskies_ambient( ray_dir );\n"
 209 "   \n"
 210 "   /* Sun */\n"
 211 "   float sun_theta  = dot( ray_dir, g_sun_dir.xyz );\n"
 212 "   float sun_size   = max( 0.0, sun_theta * 0.5 + 0.5 + SUN_ANGLE );\n"
 213 "   float sun_shape  = pow( sun_size, 2000.0 );\n"
 214 "         sun_shape += sun_size * max(g_sun_dir.y,0.0) * 0.5;\n"
 215 "         \n"
 216 "   vec3 sun_colour  = mix( vec3(1.0), g_sunset_colour.rgb, g_sunset_phase*0.5 );\n"
 217 "        sun_colour *= sun_shape;\n"
 218 "\n"
 219 "   \n"
 220 "   float star = 0.0;\n"
 221 "   float star_blend = 10.0*max(0.0,(1.0-g_day_phase*2.0));\n"
 222 "\n"
 223 "   if( star_blend > 0.001 ){\n"
 224 "      for( float j = 1.0; j <= 4.1; j += 1.0 ){\n"
 225 "         float m = mix(0.6, 0.9, smoothstep(1.0, 2.0, j));\n"
 226 "         star += stars( ray_dir, 1.94 * pow( 1.64, j ), m ) * (1.0/pow(4.0, j));\n"
 227 "      }\n"
 228 "   }\n"
 229 "   \n"
 230 "   vec3 composite   = sky_colour + sun_colour + star*star_blend;\n"
 231 "   return composite;\n"
 232 "}\n"
 233 "\n"
 234 "vec3 clearskies_lighting( vec3 normal, float shadow, vec3 halfview )\n"
 235 "{\n"
 236 "   float fresnel = 1.0 - abs(dot(normal,halfview));\n"
 237 "\n"
 238 "   vec3  reflect_colour = mix( g_daysky_colour.rgb, g_sunset_colour.rgb, \n"
 239 "                               g_sunset_phase );\n"
 240 "\n"
 241 "   vec3  sky_reflection = 0.5 * fresnel * reflect_colour;\n"
 242 "   vec3  light_sun      = max( CLEARSKIES_LIGHT_DOT_MIN, \n"
 243 "                               dot(normal,g_sun_dir.xyz)*0.75+0.25\n"
 244 "                           ) * g_sun_colour.rgb * g_day_phase;\n"
 245 "\n"
 246 "   float scaled_shadow = max( shadow, 1.0 - max(g_sun_dir.y,0.0) );\n"
 247 "   vec3 ambient = mix( g_ambient_colour.rgb, g_sunset_ambient.rgb, \n"
 248 "                       g_sunset_phase );\n"
 249 "\n"
 250 "   return ambient + (light_sun + sky_reflection) * shadow;\n"
 251 "}\n"
 252 "\n"
 253 "#line     44        0 \n"
 254 "\n"
 255 "float world_depth_sample( vec3 pos )\n"
 256 "{\n"
 257 "   vec2 depth_coord = (pos.xz - g_depth_bounds.xy) * g_depth_bounds.zw; \n"
 258 "   return texture( g_world_depth, depth_coord ).r;\n"
 259 "}\n"
 260 "\n"
 261 "float world_water_depth( vec3 pos )\n"
 262 "{\n"
 263 "   float ref_depth = g_water_plane.y*g_water_plane.w;\n"
 264 "   return world_depth_sample( pos ) - ref_depth;\n"
 265 "}\n"
 266 "\n"
 267 "float shadow_sample( vec3 co ){\n"
 268 "   float height_sample = world_depth_sample( co );\n"
 269 "\n"
 270 "   float fdelta = height_sample - co.y;\n"
 271 "   return clamp( fdelta, 0.2, 0.4 )-0.2;\n"
 272 "}\n"
 273 "\n"
 274 "float newlight_compute_sun_shadow( vec3 co, vec3 dir ){\n"
 275 "   if( g_shadow_samples == 0 ){\n"
 276 "      return 1.0;\n"
 277 "   }\n"
 278 "\n"
 279 "   float fspread = g_shadow_spread;\n"
 280 "   float flength = g_shadow_length;\n"
 281 "\n"
 282 "   float famt = 0.0;\n"
 283 "   famt += shadow_sample(co+(dir+vec3(-0.56,0.55, 0.30)*fspread)*flength*0.1);\n"
 284 "   famt += shadow_sample(co+(dir+vec3( 0.80,0.68, 0.34)*fspread)*flength*0.2);\n"
 285 "   famt += shadow_sample(co+(dir+vec3( 0.78,0.07,-0.06)*fspread)*flength*0.3);\n"
 286 "   famt += shadow_sample(co+(dir+vec3(-0.59,0.07,-0.42)*fspread)*flength*0.4);\n"
 287 "\n"
 288 "   //famt+=shadow_sample(co+(dir+vec3(-0.790,-0.933,-0.875)*fspread)*flength*0.5);\n"
 289 "   //famt+=shadow_sample(co+(dir+vec3( 0.807,-0.690, 0.472)*fspread)*flength*0.6);\n"
 290 "   //famt+=shadow_sample(co+(dir+vec3( 0.522,-0.379, 0.350)*fspread)*flength*0.7);\n"
 291 "   //famt+=shadow_sample(co+(dir+vec3( 0.483, 0.201, 0.306)*fspread)*flength*0.8);\n"
 292 "\n"
 293 "   return 1.0 - famt;\n"
 294 "}\n"
 295 "\n"
 296 "float newlight_specular( vec3 wnormal, vec3 dir, vec3 halfview, float exponent )\n"
 297 "{\n"
 298 "   vec3 specdir = reflect( -dir, wnormal );\n"
 299 "   return pow(max(dot( halfview, specdir ), 0.0), exponent);\n"
 300 "}\n"
 301 "\n"
 302 "vec3 scene_apply_fog( vec3 vfrag, vec3 colour, float fdist ){\n"
 303 "   float dist = pow(fdist*0.0010,0.78);\n"
 304 "   return mix( vfrag, colour, min( 1.0, dist ) );\n"
 305 "}\n"
 306 "\n"
 307 "vec3 scene_calculate_light( int light_index, \n"
 308 "                            vec3 halfview, vec3 co, vec3 normal )\n"
 309 "{\n"
 310 "   vec4 light_colour = texelFetch( uLightsArray, light_index+0 );\n"
 311 "   vec4 light_co     = texelFetch( uLightsArray, light_index+1 );\n"
 312 "   vec4 light_dir    = texelFetch( uLightsArray, light_index+2 );\n"
 313 "\n"
 314 "   vec3 light_delta = light_co.xyz-co;\n"
 315 "   float dist2 = dot(light_delta,light_delta);\n"
 316 "\n"
 317 "   light_delta = normalize( light_delta );\n"
 318 "\n"
 319 "   float quadratic = dist2*100.0;\n"
 320 "   float attenuation  = 1.0/( 1.0 + quadratic );\n"
 321 "         attenuation *= max( dot( light_delta, normal ), 0.0 );\n"
 322 "\n"
 323 "   float falloff = max( 0.0, 1.0-(dist2*light_co.w) );\n"
 324 "\n"
 325 "   if( light_dir.w < 0.999999 ){\n"
 326 "      float spot_theta = max( 0.0, dot( light_delta, -light_dir.xyz ) );\n"
 327 "      falloff *= max( 0.0, (spot_theta - light_dir.w) / (1.0-light_dir.w) );\n"
 328 "   }\n"
 329 "\n"
 330 "   return light_colour.rgb * attenuation * falloff \n"
 331 "            * step( g_day_phase, light_colour.w );\n"
 332 "}\n"
 333 "\n"
 334 "vec3 scene_calculate_packed_light_patch( uint packed_index, \n"
 335 "                                         vec3 halfview, vec3 co, vec3 normal )\n"
 336 "{\n"
 337 "   uint light_count = packed_index & 0x3u;\n"
 338 "\n"
 339 "   vec3 l = vec3(0.0);\n"
 340 "\n"
 341 "   if( light_count >= 1u ){\n"
 342 "      int index_0 = int( ((packed_index >>  2u) & 0x3ffu) * 3u );\n"
 343 "      int index_1 = int( ((packed_index >> 12u) & 0x3ffu) * 3u );\n"
 344 "      int index_2 = int( ((packed_index >> 22u) & 0x3ffu) * 3u );\n"
 345 "\n"
 346 "      l += scene_calculate_light( index_0, halfview, co, normal );\n"
 347 "\n"
 348 "      if( light_count >= 2u ){\n"
 349 "         l += scene_calculate_light( index_1, halfview, co, normal );\n"
 350 "\n"
 351 "         if( light_count >= 3u ){\n"
 352 "            l += scene_calculate_light( index_2, halfview, co, normal );\n"
 353 "         }\n"
 354 "      }\n"
 355 "   }\n"
 356 "\n"
 357 "   return l;\n"
 358 "}\n"
 359 "\n"
 360 "vec3 world_compute_lighting( vec3 diffuse, vec3 normal, vec3 co,\n"
 361 "                             float light_mask )\n"
 362 "{\n"
 363 "   if( g_light_preview == 1 )\n"
 364 "      diffuse = vec3(0.75);\n"
 365 "\n"
 366 "   // Lighting\n"
 367 "   vec3 halfview = uCamera - co;\n"
 368 "   float fdist = length(halfview);\n"
 369 "   halfview /= fdist;\n"
 370 "\n"
 371 "   float world_shadow = newlight_compute_sun_shadow( \n"
 372 "               co, g_sun_dir.xyz * (1.0/(max(g_sun_dir.y,0.0)+0.2)) );\n"
 373 "\n"
 374 "   vec3 total_light = clearskies_lighting( \n"
 375 "                           normal, min( light_mask, world_shadow ), halfview );\n"
 376 "\n"
 377 "   vec3 cube_coord = (co - g_cube_min.xyz) * g_cube_inv_range.xyz;\n"
 378 "        cube_coord = floor( cube_coord );\n"
 379 "\n"
 380 "   if( g_debug_indices == 1 )\n"
 381 "   {\n"
 382 "      return rand33(cube_coord);\n"
 383 "   }\n"
 384 "\n"
 385 "   if( g_debug_complexity == 1 )\n"
 386 "   {\n"
 387 "      ivec3 coord = ivec3( cube_coord );\n"
 388 "      uvec4 index_sample = texelFetch( uLightsIndex, coord, 0 );\n"
 389 "\n"
 390 "      uint light_count = (index_sample.x & 0x3u) + (index_sample.y & 0x3u);\n"
 391 "      return vec3( float(light_count)*(1.0/6.0), 0.0, 0.5 );\n"
 392 "   }\n"
 393 "\n"
 394 "   // FIXME: this coord should absolutely must be clamped!\n"
 395 "   \n"
 396 "   ivec3 coord = ivec3( cube_coord );\n"
 397 "   uvec4 index_sample = texelFetch( uLightsIndex, coord, 0 );\n"
 398 "\n"
 399 "   total_light += \n"
 400 "      scene_calculate_packed_light_patch( index_sample.x,\n"
 401 "                                          halfview, co, normal ) \n"
 402 "                                          * light_mask;\n"
 403 "   total_light += \n"
 404 "      scene_calculate_packed_light_patch( index_sample.y,\n"
 405 "                                          halfview, co, normal )\n"
 406 "                                          * light_mask;\n"
 407 "\n"
 408 "   // Take a section of the sky function to give us a matching fog colour\n"
 409 "\n"
 410 "   vec3 fog_colour  = clearskies_ambient( -halfview );\n"
 411 "   float sun_theta  = dot( -halfview, g_sun_dir.xyz );\n"
 412 "   float sun_size   = max( 0.0, sun_theta * 0.5 + 0.5 );\n"
 413 "   float sun_shape  = sun_size * max(g_sun_dir.y,0.0) * 0.5;\n"
 414 "         \n"
 415 "   vec3 sun_colour  = mix( vec3(1.0), g_sunset_colour.rgb, g_sunset_phase*0.5 );\n"
 416 "        sun_colour *= sun_shape;\n"
 417 "\n"
 418 "   fog_colour += sun_colour;\n"
 419 "   return scene_apply_fog( diffuse * total_light, fog_colour, fdist );\n"
 420 "}\n"
 421 "\n"
 422 "#line      9        0 \n"
 423 "\n"
 424 "float sdLine( vec3 p, vec3 a, vec3 b )\n"
 425 "{\n"
 426 "  vec3 pa = p - a;\n"
 427 "  vec3 ba = b - a;\n"
 428 "\n"
 429 "  float h = clamp( dot(pa,ba)/dot(ba,ba), 0.0, 1.0 );\n"
 430 "  return length( pa - ba*h );\n"
 431 "}\n"
 432 "\n"
 433 "float compute_board_shadow()\n"
 434 "{\n"
 435 "   // player shadow\n"
 436 "   float dist_to_player = max( 0.0, sdLine( aWorldCo, g_board_0.xyz,\n"
 437 "                                                      g_board_1.xyz )-0.1 );\n"
 438 "   float player_shadow = max( 1.0-dist_to_player*2.7, 0.0 );\n"
 439 "   player_shadow *= player_shadow*player_shadow*player_shadow;\n"
 440 "\n"
 441 "   return 1.0 - player_shadow*0.8;\n"
 442 "}\n"
 443 "\n"
 444 "vec3 scene_compute_lighting( vec3 diffuse, vec3 normal, vec3 co )\n"
 445 "{\n"
 446 "   return world_compute_lighting( diffuse, normal, co, compute_board_shadow() );\n"
 447 "}\n"
 448 "\n"
 449 "#line     13        0 \n"
 450 "#line       1        3 \n"
 451 "const float k_motion_lerp_amount = 0.01;\n"
 452 "\n"
 453 "#line      2        0 \n"
 454 "\n"
 455 "layout (location = 1) out vec2 oMotionVec;\n"
 456 "\n"
 457 "in vec3 aMotionVec0;\n"
 458 "in vec3 aMotionVec1;\n"
 459 "\n"
 460 "void compute_motion_vectors()\n"
 461 "{\n"
 462 "   // Write motion vectors\n"
 463 "   vec2 vmotion0 = aMotionVec0.xy / aMotionVec0.z;\n"
 464 "   vec2 vmotion1 = aMotionVec1.xy / aMotionVec1.z;\n"
 465 "\n"
 466 "   oMotionVec = (vmotion1-vmotion0) * (1.0/k_motion_lerp_amount);\n"
 467 "}\n"
 468 "\n"
 469 "#line     14        0 \n"
 470 "\n"
 471 "vec2 smin( float a, float b, float k ){\n"
 472 "   float h = max( k-abs(a-b), 0.0 )/k;\n"
 473 "   float m = h*h*0.5;\n"
 474 "   float s = m*k*(1.0/2.0);\n"
 475 "\n"
 476 "   if( a < b )\n"
 477 "      return vec2(a-s,m);\n"
 478 "   else\n"
 479 "      return vec2(b-s,1.0-m);\n"
 480 "}\n"
 481 "\n"
 482 "void main(){\n"
 483 "   vec2 ssuv = gl_FragCoord.xy;\n"
 484 "   vec3 vDither = vec3( dot( vec2( 171.0, 231.0 ), ssuv) );\n"
 485 "   float dither = fract( vDither.g / 71.0 ) - 0.5;\n"
 486 "\n"
 487 "   float dcam = (-8.0+distance( aCo, uCamera ))/4.0;\n"
 488 "   float dy0 = aCo.y - uMapInfo.x;\n"
 489 "   float dy1 = uMapInfo.y - aCo.y;\n"
 490 "\n"
 491 "   if( min(min(dy0,dy1)*0.5, dcam) + dither < 0.51 ) \n"
 492 "      discard;\n"
 493 "\n"
 494 "   compute_motion_vectors();\n"
 495 "\n"
 496 "   vec3 vfrag = vec3(0.898,0.811,0.716);\n"
 497 "   vec3 qnorm = aNorm.xyz;\n"
 498 "\n"
 499 "   qnorm = normalize(floor(aNorm.xyz*4.0)*0.25);\n"
 500 "   qnorm += vec3(0.001,0.0,0.0);\n"
 501 "\n"
 502 "   if( uAlphatest ){\n"
 503 "      vec4 vSample = texture( uTexMain, aUv );\n"
 504 "      if( vSample.a < 0.5 )\n"
 505 "         discard;\n"
 506 "   }\n"
 507 "   else{\n"
 508 "   }\n"
 509 "\n"
 510 "   vfrag = scene_compute_lighting( vfrag, qnorm, aWorldCo );\n"
 511 "   \n"
 512 "   // dots\n"
 513 "   float d0 = distance( aCo, uPlayerPos.xyz )*2.0;\n"
 514 "   float d1 = distance( aCo, uSpawnPos.xyz );\n"
 515 "\n"
 516 "   vec2 dm = smin( d0, d1, 10.0 );\n"
 517 "   float dd = fract(dm.x*0.2-g_realtime*0.5) * \n"
 518 "               max(0.0,1.0-dm.x*0.04) * \n"
 519 "               max(0.0,qnorm.y);\n"
 520 "   vec3 emit = mix(vec3(1.0,0.0,0.0),vec3(0.0,1.0,0.0),dm.y)*dd;\n"
 521 "\n"
 522 "   // line\n"
 523 "   vec3 v0 = (uSpawnPos.xyz-uPlayerPos.xyz)*uSpawnPos.w;\n"
 524 "   float t = clamp( dot(aCo-uPlayerPos.xyz,v0), 0.0, uPlayerPos.w );\n"
 525 "   vec3 p0 = uPlayerPos.xyz + v0*t;\n"
 526 "   float d3 = distance(p0,aCo);\n"
 527 "   emit += vec3(fract(t*0.2-g_realtime+d3*0.2)*max(0.0,1.0-d3*0.2));\n"
 528 "\n"
 529 "   vfrag += emit;\n"
 530 "\n"
 531 "   if( uMapInfo.z > 0.0 ){\n"
 532 "      float height = fract( aCo.y * 0.1 );\n"
 533 "      float lg = 2.0*length(vec2(dFdx(height), dFdy(height)));\n"
 534 "      vfrag *= 1.0f+(lg*0.2*uMapInfo.z);\n"
 535 "   }\n"
 536 "\n"
 537 "   oColour = vec4( vfrag, 1.0 );\n"
 538 "   //oColour = vec4( vfrag, 1.0 );\n"
 539 "}\n"
 540 ""},
 541 };
 542
 543 static GLuint _uniform_scene_override_uMdl;
 544 static GLuint _uniform_scene_override_uPv;
 545 static GLuint _uniform_scene_override_uPvmPrev;
 546 static GLuint _uniform_scene_override_uNormalMtx;
 547 static GLuint _uniform_scene_override_uTexGarbage;
 548 static GLuint _uniform_scene_override_uTexMain;
 549 static GLuint _uniform_scene_override_uCamera;
 550 static GLuint _uniform_scene_override_uPlane;
 551 static GLuint _uniform_scene_override_uPlayerPos;
 552 static GLuint _uniform_scene_override_uSpawnPos;
 553 static GLuint _uniform_scene_override_uAlphatest;
 554 static GLuint _uniform_scene_override_uMapInfo;
 555 static GLuint _uniform_scene_override_g_world_depth;
 556 static GLuint _uniform_scene_override_uLightsArray;
 557 static GLuint _uniform_scene_override_uLightsIndex;
 558 static void shader_scene_override_uMdl(m4x3f m){
 559    glUniformMatrix4x3fv(_uniform_scene_override_uMdl,1,GL_FALSE,(float*)m);
 560 }
 561 static void shader_scene_override_uPv(m4x4f m){
 562    glUniformMatrix4fv(_uniform_scene_override_uPv,1,GL_FALSE,(float*)m);
 563 }
 564 static void shader_scene_override_uPvmPrev(m4x4f m){
 565    glUniformMatrix4fv(_uniform_scene_override_uPvmPrev,1,GL_FALSE,(float*)m);
 566 }
 567 static void shader_scene_override_uNormalMtx(m3x3f m){
 568    glUniformMatrix3fv(_uniform_scene_override_uNormalMtx,1,GL_FALSE,(float*)m);
 569 }
 570 static void shader_scene_override_uTexGarbage(int i){
 571    glUniform1i(_uniform_scene_override_uTexGarbage,i);
 572 }
 573 static void shader_scene_override_uTexMain(int i){
 574    glUniform1i(_uniform_scene_override_uTexMain,i);
 575 }
 576 static void shader_scene_override_uCamera(v3f v){
 577    glUniform3fv(_uniform_scene_override_uCamera,1,v);
 578 }
 579 static void shader_scene_override_uPlane(v4f v){
 580    glUniform4fv(_uniform_scene_override_uPlane,1,v);
 581 }
 582 static void shader_scene_override_uPlayerPos(v4f v){
 583    glUniform4fv(_uniform_scene_override_uPlayerPos,1,v);
 584 }
 585 static void shader_scene_override_uSpawnPos(v4f v){
 586    glUniform4fv(_uniform_scene_override_uSpawnPos,1,v);
 587 }
 588 static void shader_scene_override_uAlphatest(int b){
 589    glUniform1i(_uniform_scene_override_uAlphatest,b);
 590 }
 591 static void shader_scene_override_uMapInfo(v4f v){
 592    glUniform4fv(_uniform_scene_override_uMapInfo,1,v);
 593 }
 594 static void shader_scene_override_g_world_depth(int i){
 595    glUniform1i(_uniform_scene_override_g_world_depth,i);
 596 }
 597 static void shader_scene_override_register(void){
 598    vg_shader_register( &_shader_scene_override );
 599 }
 600 static void shader_scene_override_use(void){ glUseProgram(_shader_scene_override.id); }
 601 static void shader_scene_override_link(void){
 602    _uniform_scene_override_uMdl = glGetUniformLocation( _shader_scene_override.id, "uMdl" );
 603    _uniform_scene_override_uPv = glGetUniformLocation( _shader_scene_override.id, "uPv" );
 604    _uniform_scene_override_uPvmPrev = glGetUniformLocation( _shader_scene_override.id, "uPvmPrev" );
 605    _uniform_scene_override_uNormalMtx = glGetUniformLocation( _shader_scene_override.id, "uNormalMtx" );
 606    _uniform_scene_override_uTexGarbage = glGetUniformLocation( _shader_scene_override.id, "uTexGarbage" );
 607    _uniform_scene_override_uTexMain = glGetUniformLocation( _shader_scene_override.id, "uTexMain" );
 608    _uniform_scene_override_uCamera = glGetUniformLocation( _shader_scene_override.id, "uCamera" );
 609    _uniform_scene_override_uPlane = glGetUniformLocation( _shader_scene_override.id, "uPlane" );
 610    _uniform_scene_override_uPlayerPos = glGetUniformLocation( _shader_scene_override.id, "uPlayerPos" );
 611    _uniform_scene_override_uSpawnPos = glGetUniformLocation( _shader_scene_override.id, "uSpawnPos" );
 612    _uniform_scene_override_uAlphatest = glGetUniformLocation( _shader_scene_override.id, "uAlphatest" );
 613    _uniform_scene_override_uMapInfo = glGetUniformLocation( _shader_scene_override.id, "uMapInfo" );
 614    _uniform_scene_override_g_world_depth = glGetUniformLocation( _shader_scene_override.id, "g_world_depth" );
 615    _uniform_scene_override_uLightsArray = glGetUniformLocation( _shader_scene_override.id, "uLightsArray" );
 616    _uniform_scene_override_uLightsIndex = glGetUniformLocation( _shader_scene_override.id, "uLightsIndex" );
 617 }
 618 #endif /* SHADER_scene_override_H */