git.mutantstargoat.com Git - ld37_one_room/blob - sdr/uber.v.glsl

   1 varying vec3 vpos, vdir, normal;
   2 #ifdef USE_SHADOWMAP
   3 varying vec4 shadow_tc;
   4 #endif
   5 #ifdef USE_CUBEMAP
   6 varying vec3 wdir;
   7 uniform mat4 envmap_matrix;
   8 #endif
   9
  10 void main()
  11 {
  12         gl_Position = ftransform();
  13
  14         vpos = (gl_ModelViewMatrix * gl_Vertex).xyz;
  15         normal = gl_NormalMatrix * gl_Normal;
  16         vdir = -vpos;
  17 #ifdef USE_CUBEMAP
  18         wdir = (envmap_matrix * vec4(vdir, 1.0)).xyz;   // bring back to world space
  19 #endif
  20 #ifdef USE_TEXMAP
  21         gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
  22 #endif
  23
  24 #ifdef USE_SHADOWMAP
  25         mat4 offmat = mat4(0.5, 0.0, 0.0, 0.0,
  26                         0.0, 0.5, 0.0, 0.0,
  27                         0.0, 0.0, 0.5, 0.0,
  28                         0.5, 0.5, 0.5, 1.0);
  29         mat4 tex_matrix = offmat * gl_TextureMatrix[1];
  30
  31         shadow_tc = tex_matrix * vec4(vpos, 1.0);
  32 #endif
  33 }