shaders/scene_position.h

   1 #ifndef SHADER_scene_position_H
   2 #define SHADER_scene_position_H
   3 static void shader_scene_position_link(void);
   4 static void shader_scene_position_register(void);
   5 static struct vg_shader _shader_scene_position = {
   6    .name = "scene_position",
   7    .link = shader_scene_position_link,
   8    .vs =
   9 {
  10 .orig_file = "shaders/scene.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 "layout (location=3) in ivec4 a_lights;\n"
  16 "\n"
  17 "#line       1        1 \n"
  18 "const float k_motion_lerp_amount = 0.01;\n"
  19 "\n"
  20 "#line      2        0 \n"
  21 "\n"
  22 "out vec3 aMotionVec0;\n"
  23 "out vec3 aMotionVec1;\n"
  24 "\n"
  25 "void vs_motion_out( vec4 vproj0, vec4 vproj1 )\n"
  26 "{\n"
  27 "   // This magically solves some artifacting errors!\n"
  28 "   //\n"
  29 "   vproj1 = vproj0*(1.0-k_motion_lerp_amount) + vproj1*k_motion_lerp_amount;\n"
  30 "\n"
  31 "   aMotionVec0 = vec3( vproj0.xy, vproj0.w );\n"
  32 "   aMotionVec1 = vec3( vproj1.xy, vproj1.w );\n"
  33 "}\n"
  34 "\n"
  35 "#line      7        0 \n"
  36 "\n"
  37 "uniform mat4x3 uMdl;\n"
  38 "uniform mat4   uPv;\n"
  39 "uniform mat4   uPvmPrev;\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 "flat out ivec4 light_indices;\n"
  47 "\n"
  48 "void main()\n"
  49 "{\n"
  50 "   vec3 world_pos0 = uMdl     * vec4( a_co, 1.0 );\n"
  51 "   vec4 vproj0     = uPv      * vec4( world_pos0, 1.0 );\n"
  52 "   vec4 vproj1     = uPvmPrev * vec4( a_co, 1.0 );\n"
  53 "\n"
  54 "   vs_motion_out( vproj0, vproj1 );\n"
  55 "\n"
  56 "   gl_Position = vproj0;\n"
  57 "\n"
  58 "   aUv = a_uv;\n"
  59 "   aNorm = vec4( mat3(uMdl) * a_norm.xyz, a_norm.w );\n"
  60 "   aCo = a_co;\n"
  61 "   aWorldCo = world_pos0;\n"
  62 "\n"
  63 "   light_indices = a_lights;\n"
  64 "}\n"
  65 ""},
  66    .fs =
  67 {
  68 .orig_file = "shaders/scene_position.fs",
  69 .static_src =
  70 "out vec4 FragColor;\n"
  71 "\n"
  72 "uniform vec3 uCamera;\n"
  73 "uniform vec3 uBoard0;\n"
  74 "uniform vec3 uBoard1;\n"
  75 "\n"
  76 "#line       1        1 \n"
  77 "// :D\n"
  78 "\n"
  79 "in vec2 aUv;\n"
  80 "in vec4 aNorm;\n"
  81 "in vec3 aCo;\n"
  82 "in vec3 aWorldCo;\n"
  83 "flat in ivec4 light_indices;\n"
  84 "\n"
  85 "uniform samplerBuffer uLightsArray;\n"
  86 "uniform usampler3D uLightsIndex;\n"
  87 "\n"
  88 "#line       1        1 \n"
  89 "layout (location = 0) out vec4 oColour;\n"
  90 "\n"
  91 "layout (std140) uniform ub_world_lighting\n"
  92 "{\n"
  93 "   vec4 g_cube_min;\n"
  94 "   vec4 g_cube_inv_range;\n"
  95 "\n"
  96 "   vec4 g_light_colours[3];\n"
  97 "   vec4 g_light_directions[3];\n"
  98 "   vec4 g_ambient_colour;\n"
  99 "\n"
 100 "   vec4 g_water_plane;\n"
 101 "   vec4 g_depth_bounds;\n"
 102 "   float g_water_fog;\n"
 103 "   float g_time;\n"
 104 "   int g_light_count;\n"
 105 "   int g_light_preview;\n"
 106 "   int g_shadow_samples;\n"
 107 "\n"
 108 "   int g_debug_indices;\n"
 109 "   int g_debug_complexity;\n"
 110 "\n"
 111 "   // g_time ?\n"
 112 "\n"
 113 "   //vec4 g_point_light_positions[32];\n"
 114 "   //vec4 g_point_light_colours[32];\n"
 115 "};\n"
 116 "\n"
 117 "uniform sampler2D g_world_depth;\n"
 118 "\n"
 119 "float world_depth_sample( vec3 pos )\n"
 120 "{\n"
 121 "   vec2 depth_coord = (pos.xz - g_depth_bounds.xy) * g_depth_bounds.zw; \n"
 122 "   return texture( g_world_depth, depth_coord ).r;\n"
 123 "}\n"
 124 "\n"
 125 "float world_water_depth( vec3 pos )\n"
 126 "{\n"
 127 "   vec2 depth_coord = (pos.xz - g_depth_bounds.xy) * g_depth_bounds.zw; \n"
 128 "   float ref_depth = g_water_plane.y*g_water_plane.w;\n"
 129 "   return texture( g_world_depth, depth_coord ).g - ref_depth;\n"
 130 "}\n"
 131 "\n"
 132 "float shadow_sample( vec3 vdir )\n"
 133 "{\n"
 134 "   vec3 sample_pos = aWorldCo + vdir;\n"
 135 "   float height_sample = world_depth_sample( sample_pos );\n"
 136 "\n"
 137 "   float fdelta = height_sample - sample_pos.y;\n"
 138 "   return clamp( fdelta, 0.1, 0.2 )-0.1;\n"
 139 "}\n"
 140 "\n"
 141 "vec3 apply_fog( vec3 vfrag, float fdist )\n"
 142 "{\n"
 143 "   float dist = pow(fdist*0.0008,1.2);\n"
 144 "   return mix( vfrag, vec3(0.55,0.76,1.0), min( 1.0, dist ) );\n"
 145 "}\n"
 146 "\n"
 147 "\n"
 148 "// New lighting model\n"
 149 "\n"
 150 "vec3 newlight_compute_ambient()\n"
 151 "{\n"
 152 "   return g_ambient_colour.rgb;\n"
 153 "}\n"
 154 "\n"
 155 "float newlight_compute_sun_shadow( vec3 dir )\n"
 156 "{\n"
 157 "   if( g_shadow_samples == 0 )\n"
 158 "   {\n"
 159 "      return 1.0;\n"
 160 "   }\n"
 161 "\n"
 162 "   float fspread = g_light_colours[0].w;\n"
 163 "   vec3  vdir = dir;\n"
 164 "   float flength = g_light_directions[0].w;\n"
 165 "\n"
 166 "   float famt = 0.0;\n"
 167 "   famt+=shadow_sample((vdir+vec3(-0.563, 0.550, 0.307)*fspread)*flength*0.1);\n"
 168 "   famt+=shadow_sample((vdir+vec3( 0.808, 0.686, 0.346)*fspread)*flength*0.2);\n"
 169 "   famt+=shadow_sample((vdir+vec3( 0.787, 0.074,-0.065)*fspread)*flength*0.3);\n"
 170 "   famt+=shadow_sample((vdir+vec3(-0.593, 0.071,-0.425)*fspread)*flength*0.4);\n"
 171 "   famt+=shadow_sample((vdir+vec3(-0.790,-0.933,-0.875)*fspread)*flength*0.5);\n"
 172 "   famt+=shadow_sample((vdir+vec3( 0.807,-0.690, 0.472)*fspread)*flength*0.6);\n"
 173 "   famt+=shadow_sample((vdir+vec3( 0.522,-0.379, 0.350)*fspread)*flength*0.7);\n"
 174 "   famt+=shadow_sample((vdir+vec3( 0.483, 0.201, 0.306)*fspread)*flength*0.8);\n"
 175 "\n"
 176 "   return 1.0 - famt;\n"
 177 "}\n"
 178 "\n"
 179 "vec3 newlight_compute_world_diffuse( vec3 wnormal )\n"
 180 "{\n"
 181 "   vec3 vtotal = g_ambient_colour.rgb;\n"
 182 "\n"
 183 "   for( int i=0; i<g_light_count; i++ )\n"
 184 "   {\n"
 185 "      vec3 vcolour = g_light_colours[i].rgb;\n"
 186 "      vec3 vdir = g_light_directions[i].xyz;\n"
 187 "\n"
 188 "      float flight = max(dot( vdir, wnormal )*0.75+0.25,0.0);\n"
 189 "      vtotal += vcolour*flight;\n"
 190 "   }\n"
 191 "\n"
 192 "   return vtotal;\n"
 193 "}\n"
 194 "\n"
 195 "vec3 newlight_compute_sun_spec( vec3 wnormal, vec3 halfview, float fintensity )\n"
 196 "{\n"
 197 "   vec3 vcolour = g_light_colours[0].rgb;\n"
 198 "   vec3 vdir = g_light_directions[0].xyz;\n"
 199 "\n"
 200 "   vec3 specdir = reflect( -vdir, wnormal );\n"
 201 "   float spec = pow(max(dot( halfview, specdir ), 0.0), 10.0);\n"
 202 "   return vcolour*spec*fintensity;\n"
 203 "}\n"
 204 "\n"
 205 "float newlight_specular( vec3 wnormal, vec3 dir, vec3 halfview, float exponent )\n"
 206 "{\n"
 207 "   vec3 specdir = reflect( -dir, wnormal );\n"
 208 "   return pow(max(dot( halfview, specdir ), 0.0), exponent);\n"
 209 "}\n"
 210 "\n"
 211 "vec3 newlight_compute_quadratic( vec3 wnormal, float max_dist,\n"
 212 "                                 vec3 light_colour, vec3 light_pos )\n"
 213 "{\n"
 214 "   vec3 light_delta = light_pos-aWorldCo;\n"
 215 "\n"
 216 "   float dist2 = dot(light_delta,light_delta);\n"
 217 "\n"
 218 "   float quadratic = dist2*100.0;\n"
 219 "   float attenuation  = 1.0f/( 1.0f + quadratic );\n"
 220 "         attenuation *= max( dot( normalize(light_delta), wnormal ), 0.0 );\n"
 221 "\n"
 222 "   float falloff = max( 0.0, 1.0-(dist2*max_dist) );\n"
 223 "   return light_colour * attenuation * falloff;\n"
 224 "}\n"
 225 "\n"
 226 "vec3 newlight_compute_spot( vec3 wnormal, vec3 halfview, \n"
 227 "                            vec3 light_colour, vec3 light_pos,\n"
 228 "                            vec4 light_dir )\n"
 229 "{\n"
 230 "   vec3 light_delta = (light_pos-aWorldCo) * 10.0;\n"
 231 "\n"
 232 "   float quadratic = dot(light_delta,light_delta);\n"
 233 "   float attenuation = 1.0f/( 1.0f + quadratic );\n"
 234 "\n"
 235 "   light_delta = normalize( light_delta );\n"
 236 "   attenuation *= max( 0.0, dot( light_delta, wnormal ) );\n"
 237 "\n"
 238 "   float spot_theta = max( 0.0, dot( light_delta, -light_dir.xyz ) ),\n"
 239 "            falloff = max( 0.0,( spot_theta - light_dir.w ) / (1.0-light_dir.w) );\n"
 240 "\n"
 241 "   return light_colour*attenuation*falloff;\n"
 242 "}\n"
 243 "\n"
 244 "#line     13        0 \n"
 245 "#line       1        2 \n"
 246 "const vec3  DAYSKY_COLOUR   = vec3( 0.37, 0.54, 0.97 );\n"
 247 "const vec3  NIGHTSKY_COLOUR = vec3( 0.03, 0.05, 0.20 );\n"
 248 "const vec3  SUNSET_COLOUR   = vec3( 1.00, 0.32, 0.01 );\n"
 249 "const vec3  AMBIENT_COLOUR  = vec3( 0.13, 0.17, 0.35 );\n"
 250 "const vec3  SUNSET_AMBIENT  = vec3( 0.25, 0.17, 0.51 );\n"
 251 "const vec3  SUN_COLOUR      = vec3( 1.10, 0.89, 0.35 ) * 1.125;\n"
 252 "\n"
 253 "const float SUN_ANGLE       = 0.0001;\n"
 254 "const float TIME_RATE       = 0.025;\n"
 255 "\n"
 256 "const float PI              = 3.14159265;\n"
 257 "\n"
 258 "struct world_info\n"
 259 "{\n"
 260 "   float time,\n"
 261 "         time_of_day,\n"
 262 "         day_phase,\n"
 263 "         sunset_phase;\n"
 264 "   \n"
 265 "   vec3 sun_dir;\n"
 266 "};\n"
 267 "\n"
 268 "float luminance( vec3 v )\n"
 269 "{\n"
 270 "   return dot( v, vec3(0.2126, 0.7152, 0.0722) );\n"
 271 "}\n"
 272 "\n"
 273 "vec3 scene_ambient( vec3 dir, const world_info w )\n"
 274 "{\n"
 275 "   float sun_azimuth  = dot( dir.xz, w.sun_dir.xz ) * 0.4 + 0.6;\n"
 276 "   float sky_gradient = dir.y;\n"
 277 "   \n"
 278 "   /* Blend phase colours */\n"
 279 "   vec3 ambient  = DAYSKY_COLOUR   * (w.day_phase-w.sunset_phase*0.1);\n"
 280 "        ambient += SUNSET_COLOUR   * (1.0-dir.y*0.5) * w.sunset_phase * sun_azimuth;\n"
 281 "        ambient += NIGHTSKY_COLOUR * (1.0-w.day_phase);\n"
 282 "   \n"
 283 "   /* Add gradient */\n"
 284 "        ambient -= sky_gradient * luminance(ambient);\n"
 285 "        \n"
 286 "   return ambient;\n"
 287 "}\n"
 288 "\n"
 289 "vec3 scene_sky( vec3 ray_dir, const world_info w )\n"
 290 "{\n"
 291 "   ray_dir.y = abs( ray_dir.y );\n"
 292 "   vec3 sky_colour  = scene_ambient( ray_dir, w );\n"
 293 "   \n"
 294 "   /* Sun */\n"
 295 "   float sun_theta  = dot( ray_dir, w.sun_dir );\n"
 296 "   float sun_size   = max( 0.0, sun_theta * 0.5 + 0.5 + SUN_ANGLE );\n"
 297 "   float sun_shape  = pow( sun_size, 2000.0 );\n"
 298 "         sun_shape += sun_size * max(w.sun_dir.y,0.0) * 0.5;\n"
 299 "         \n"
 300 "   vec3 sun_colour  = mix( vec3(1.0), SUNSET_COLOUR, w.sunset_phase*0.5 );\n"
 301 "        sun_colour *= sun_shape;\n"
 302 "   \n"
 303 "   vec3 composite   = sky_colour + sun_colour;\n"
 304 "   return composite;\n"
 305 "}\n"
 306 "\n"
 307 "vec3 scene_compute_ambient( vec3 normal, const world_info w )\n"
 308 "{\n"
 309 "   return scene_ambient( (normal * vec3(1.0,-1.0,1.0)) * 0.5 + 0.5, w );\n"
 310 "}\n"
 311 "\n"
 312 "vec3 SR_LIGHT( vec3 normal, vec2 dir, vec3 colour )\n"
 313 "{\n"
 314 "   vec3 dir3 = vec3\n"
 315 "   (\n"
 316 "      cos(dir.y) * cos(dir.x),\n"
 317 "                   sin(dir.x),\n"
 318 "      sin(dir.y) * cos(dir.x)\n"
 319 "   );\n"
 320 "\n"
 321 "   float flight = max( dot( normal, dir3 ) * 0.75 + 0.25, 0.0 );\n"
 322 "   \n"
 323 "   return flight * colour;\n"
 324 "}\n"
 325 "\n"
 326 "vec3 scene_lighting_old( vec3 normal, const world_info w )\n"
 327 "{\n"
 328 "   vec3 SR_COLOUR_SUN  = vec3( 1.36,  1.35, 1.01 );\n"
 329 "   vec3 SR_COLOUR_FILL = vec3( 0.33,  0.56, 0.64 );\n"
 330 "   vec3 SR_COLOUR_RIM  = vec3( 0.05,  0.05, 0.23 );\n"
 331 "   \n"
 332 "   return SR_LIGHT( normal, vec2(  0.63, -0.08 ), SR_COLOUR_SUN ) +\n"
 333 "          SR_LIGHT( normal, vec2( -2.60, -0.13 ), SR_COLOUR_FILL ) + \n"
 334 "          SR_LIGHT( normal, vec2(  2.60, -0.84 ), SR_COLOUR_RIM ) ;\n"
 335 "}\n"
 336 "\n"
 337 "vec3 scene_lighting( vec3 normal, float shadow, vec3 halfview, const world_info w )\n"
 338 "{\n"
 339 "   float fresnel = 1.0 - abs(dot(normal,halfview));\n"
 340 "\n"
 341 "   vec3  sky_reflection = 0.5 * fresnel * mix( DAYSKY_COLOUR, SUNSET_COLOUR, w.sunset_phase );\n"
 342 "   vec3  light_sun      = max(0.0,dot(normal,w.sun_dir)*0.75+0.25) * SUN_COLOUR \n"
 343 "                           * w.day_phase;\n"
 344 "\n"
 345 "   float scaled_shadow = max( shadow, 1.0 - max(w.sun_dir.y,0.0) );\n"
 346 "\n"
 347 "   vec3 ambient = mix( AMBIENT_COLOUR, SUNSET_AMBIENT, w.sunset_phase );\n"
 348 "\n"
 349 "   return ambient + (light_sun + sky_reflection) * shadow;\n"
 350 "\n"
 351 "\n"
 352 "\n"
 353 "\n"
 354 "\n"
 355 "\n"
 356 "   float  sun_theta = dot( normal, w.sun_dir );\n"
 357 "\n"
 358 "   float  softness_min = 0.5;\n"
 359 "   float  softness     = softness_min + w.sunset_phase * (1.0-softness_min);\n"
 360 "   float  light_min    = 0.0 * w.day_phase;\n"
 361 "   float  light_direct = light_min + smoothstep( -softness, softness, sun_theta ) * (1.0-light_min);\n"
 362 "          light_direct *= clamp(w.sun_dir.y * 4.0 + 1.0,0.0,1.0) * shadow;\n"
 363 "   \n"
 364 "   float  light_bounce  = 0.5 + 0.5 * dot( -normal, w.sun_dir );\n"
 365 "          light_bounce *= light_bounce * max( w.sun_dir.y, 0.0 );\n"
 366 "          \n"
 367 "   vec3   light_colour = SUN_COLOUR*w.day_phase + (SUNSET_COLOUR*w.sunset_phase + 0.1);\n"
 368 "   vec3   dark_colour  = mix( AMBIENT_COLOUR, SUNSET_AMBIENT, w.sunset_phase );\n"
 369 "   \n"
 370 "   float  spec         = newlight_specular( normal, w.sun_dir, halfview, 2.0 ) \n"
 371 "                            * 0.2 * shadow * w.day_phase;\n"
 372 "   \n"
 373 "   return mix(dark_colour, light_colour, light_direct) + \n"
 374 "              spec +\n"
 375 "              dark_colour * light_bounce;\n"
 376 "}\n"
 377 "\n"
 378 "void scene_state( float world_time, out world_info w )\n"
 379 "{\n"
 380 "   w.time         = world_time;\n"
 381 "   w.time_of_day  = fract( w.time );\n"
 382 "   w.day_phase    = cos( w.time_of_day * PI * 2.0 )      * 0.5 + 0.5;\n"
 383 "   w.sunset_phase = cos( w.time_of_day * PI * 4.0 + PI ) * 0.5 + 0.5;\n"
 384 "   w.sunset_phase = pow( w.sunset_phase, 6.0 );\n"
 385 "   \n"
 386 "   float a        = w.time_of_day * PI * 2.0;\n"
 387 "   w.sun_dir      = normalize( vec3( sin( a ), cos( a ), 0.2) );\n"
 388 "}\n"
 389 "\n"
 390 "\n"
 391 "#line     14        0 \n"
 392 "\n"
 393 "float sdLine( vec3 p, vec3 a, vec3 b )\n"
 394 "{\n"
 395 "  vec3 pa = p - a;\n"
 396 "  vec3 ba = b - a;\n"
 397 "\n"
 398 "  float h = clamp( dot(pa,ba)/dot(ba,ba), 0.0, 1.0 );\n"
 399 "  return length( pa - ba*h );\n"
 400 "}\n"
 401 "\n"
 402 "float compute_board_shadow()\n"
 403 "{\n"
 404 "   // player shadow\n"
 405 "   float dist_to_player = max( 0.0, sdLine( aWorldCo, uBoard0, uBoard1 )-0.1 );\n"
 406 "   float player_shadow = max( 1.0-dist_to_player*2.7, 0.0 );\n"
 407 "   player_shadow *= player_shadow*player_shadow*player_shadow;\n"
 408 "\n"
 409 "   return 1.0 - player_shadow*0.8;\n"
 410 "}\n"
 411 "\n"
 412 "vec3 scene_apply_fog( vec3 vfrag, vec3 colour, float fdist )\n"
 413 "{\n"
 414 "   float dist = pow(fdist*0.0010,0.78);\n"
 415 "   return mix( vfrag, colour, min( 1.0, dist ) );\n"
 416 "}\n"
 417 "\n"
 418 "vec3 rand33(vec3 p3)\n"
 419 "{\n"
 420 "       p3 = fract(p3 * vec3(.1031, .1030, .0973));\n"
 421 "   p3 += dot(p3, p3.yxz+33.33);\n"
 422 "   return fract((p3.xxy + p3.yxx)*p3.zyx);\n"
 423 "}\n"
 424 "\n"
 425 "vec3 scene_calculate_light( int light_index, \n"
 426 "                            vec3 halfview, vec3 co, vec3 normal )\n"
 427 "{\n"
 428 "   vec4 light_colour = texelFetch( uLightsArray, light_index+0 );\n"
 429 "   vec4 light_co     = texelFetch( uLightsArray, light_index+1 );\n"
 430 "   vec4 light_dir    = texelFetch( uLightsArray, light_index+2 );\n"
 431 "\n"
 432 "   vec3 light_delta = light_co.xyz-co;\n"
 433 "   float dist2 = dot(light_delta,light_delta);\n"
 434 "\n"
 435 "   light_delta = normalize( light_delta );\n"
 436 "\n"
 437 "   float quadratic = dist2*100.0;\n"
 438 "   float attenuation  = 1.0f/( 1.0f + quadratic );\n"
 439 "         attenuation *= max( dot( light_delta, normal ), 0.0 );\n"
 440 "\n"
 441 "   float falloff = max( 0.0, 1.0-(dist2*light_co.w) );\n"
 442 "\n"
 443 "   if( light_dir.w < 0.999999 )\n"
 444 "   {\n"
 445 "      float spot_theta = max( 0.0, dot( light_delta, -light_dir.xyz ) );\n"
 446 "      falloff *= max( 0.0, (spot_theta - light_dir.w) / (1.0-light_dir.w) );\n"
 447 "   }\n"
 448 "\n"
 449 "   return light_colour.rgb * attenuation * falloff;\n"
 450 "}\n"
 451 "\n"
 452 "vec3 scene_calculate_packed_light_patch( uint packed_index, \n"
 453 "                                         vec3 halfview, vec3 co, vec3 normal )\n"
 454 "{\n"
 455 "   uint light_count = packed_index & 0x3u;\n"
 456 "\n"
 457 "   vec3 l = vec3(0.0);\n"
 458 "\n"
 459 "   if( light_count >= 1u )\n"
 460 "   {\n"
 461 "      int index_0 = int( ((packed_index >>  2u) & 0x3ffu) * 3u );\n"
 462 "      int index_1 = int( ((packed_index >> 12u) & 0x3ffu) * 3u );\n"
 463 "      int index_2 = int( ((packed_index >> 22u) & 0x3ffu) * 3u );\n"
 464 "\n"
 465 "      l += scene_calculate_light( index_0, halfview, co, normal );\n"
 466 "\n"
 467 "      if( light_count >= 2u )\n"
 468 "      {\n"
 469 "         l += scene_calculate_light( index_1, halfview, co, normal );\n"
 470 "\n"
 471 "         if( light_count >= 3u )\n"
 472 "         {\n"
 473 "            l += scene_calculate_light( index_2, halfview, co, normal );\n"
 474 "         }\n"
 475 "      }\n"
 476 "   }\n"
 477 "\n"
 478 "   return l;\n"
 479 "}\n"
 480 "\n"
 481 "vec3 scene_do_lighting( vec3 diffuse, vec3 wnormal )\n"
 482 "{\n"
 483 "   world_info world;\n"
 484 "   scene_state( g_time, world );\n"
 485 "\n"
 486 "   // Lighting\n"
 487 "   vec3 halfview = uCamera - aWorldCo;\n"
 488 "   float fdist = length(halfview);\n"
 489 "   halfview /= fdist;\n"
 490 "\n"
 491 "   vec3 total_light = vec3(0.0);\n"
 492 "   float world_shadow = newlight_compute_sun_shadow( world.sun_dir \n"
 493 "                                    * (1.0/(max(world.sun_dir.y,0.0)+0.2)) );\n"
 494 "   float board_shadow = compute_board_shadow();\n"
 495 "\n"
 496 "   total_light += scene_lighting( wnormal, min( board_shadow, world_shadow ), \n"
 497 "                                  halfview, world );\n"
 498 "\n"
 499 "   vec3 cube_coord = (aWorldCo - g_cube_min.xyz) * g_cube_inv_range.xyz;\n"
 500 "        cube_coord = floor( cube_coord );\n"
 501 "\n"
 502 "   if( g_debug_indices == 1 )\n"
 503 "   {\n"
 504 "      return rand33(cube_coord);\n"
 505 "   }\n"
 506 "\n"
 507 "   if( g_debug_complexity == 1 )\n"
 508 "   {\n"
 509 "      ivec3 coord = ivec3( cube_coord );\n"
 510 "      uvec4 index_sample = texelFetch( uLightsIndex, coord, 0 );\n"
 511 "\n"
 512 "      uint light_count = (index_sample.x & 0x3u) + (index_sample.y & 0x3u);\n"
 513 "      return vec3( float(light_count)*(1.0/6.0), 0.0, 0.5 );\n"
 514 "   }\n"
 515 "\n"
 516 "   // FIXME: this should absolutely must be clamped!\n"
 517 "   \n"
 518 "   ivec3 coord = ivec3( cube_coord );\n"
 519 "   uvec4 index_sample = texelFetch( uLightsIndex, coord, 0 );\n"
 520 "\n"
 521 "   total_light += \n"
 522 "      scene_calculate_packed_light_patch( index_sample.x,\n"
 523 "                                          halfview, aWorldCo, wnormal ) \n"
 524 "                                          * board_shadow;\n"
 525 "   total_light += \n"
 526 "      scene_calculate_packed_light_patch( index_sample.y,\n"
 527 "                                          halfview, aWorldCo, wnormal )\n"
 528 "                                          * board_shadow;\n"
 529 "\n"
 530 "   vec3 fog_colour = scene_sky( -halfview, world );\n"
 531 "   return scene_apply_fog( diffuse * total_light, fog_colour, fdist );\n"
 532 "}\n"
 533 "\n"
 534 "#line      8        0 \n"
 535 "\n"
 536 "void main()\n"
 537 "{\n"
 538 "   float height_full = aWorldCo.y;\n"
 539 "   float height_water = height_full;\n"
 540 "\n"
 541 "   if( height_water > (g_water_plane.y * g_water_plane.w) + 2.0 )\n"
 542 "      height_water = -99999.9;\n"
 543 "\n"
 544 "   FragColor = vec4( height_full, height_water, 0.0, 0.0 );\n"
 545 "}\n"
 546 ""},
 547 };
 548
 549 static GLuint _uniform_scene_position_uMdl;
 550 static GLuint _uniform_scene_position_uPv;
 551 static GLuint _uniform_scene_position_uPvmPrev;
 552 static GLuint _uniform_scene_position_uCamera;
 553 static GLuint _uniform_scene_position_uBoard0;
 554 static GLuint _uniform_scene_position_uBoard1;
 555 static GLuint _uniform_scene_position_uLightsArray;
 556 static GLuint _uniform_scene_position_uLightsIndex;
 557 static GLuint _uniform_scene_position_g_world_depth;
 558 static void shader_scene_position_uMdl(m4x3f m){
 559    glUniformMatrix4x3fv(_uniform_scene_position_uMdl,1,GL_FALSE,(float*)m);
 560 }
 561 static void shader_scene_position_uPv(m4x4f m){
 562    glUniformMatrix4fv(_uniform_scene_position_uPv,1,GL_FALSE,(float*)m);
 563 }
 564 static void shader_scene_position_uPvmPrev(m4x4f m){
 565    glUniformMatrix4fv(_uniform_scene_position_uPvmPrev,1,GL_FALSE,(float*)m);
 566 }
 567 static void shader_scene_position_uCamera(v3f v){
 568    glUniform3fv(_uniform_scene_position_uCamera,1,v);
 569 }
 570 static void shader_scene_position_uBoard0(v3f v){
 571    glUniform3fv(_uniform_scene_position_uBoard0,1,v);
 572 }
 573 static void shader_scene_position_uBoard1(v3f v){
 574    glUniform3fv(_uniform_scene_position_uBoard1,1,v);
 575 }
 576 static void shader_scene_position_g_world_depth(int i){
 577    glUniform1i(_uniform_scene_position_g_world_depth,i);
 578 }
 579 static void shader_scene_position_register(void){
 580    vg_shader_register( &_shader_scene_position );
 581 }
 582 static void shader_scene_position_use(void){ glUseProgram(_shader_scene_position.id); }
 583 static void shader_scene_position_link(void){
 584    _uniform_scene_position_uMdl = glGetUniformLocation( _shader_scene_position.id, "uMdl" );
 585    _uniform_scene_position_uPv = glGetUniformLocation( _shader_scene_position.id, "uPv" );
 586    _uniform_scene_position_uPvmPrev = glGetUniformLocation( _shader_scene_position.id, "uPvmPrev" );
 587    _uniform_scene_position_uCamera = glGetUniformLocation( _shader_scene_position.id, "uCamera" );
 588    _uniform_scene_position_uBoard0 = glGetUniformLocation( _shader_scene_position.id, "uBoard0" );
 589    _uniform_scene_position_uBoard1 = glGetUniformLocation( _shader_scene_position.id, "uBoard1" );
 590    _uniform_scene_position_uLightsArray = glGetUniformLocation( _shader_scene_position.id, "uLightsArray" );
 591    _uniform_scene_position_uLightsIndex = glGetUniformLocation( _shader_scene_position.id, "uLightsIndex" );
 592    _uniform_scene_position_g_world_depth = glGetUniformLocation( _shader_scene_position.id, "g_world_depth" );
 593 }
 594 #endif /* SHADER_scene_position_H */