source/blender/draw/modes/shaders/common_world_clip_lib.glsl

   1 #ifdef USE_WORLD_CLIP_PLANES
   2 #if defined(GPU_VERTEX_SHADER) || defined(GPU_GEOMETRY_SHADER)
   3 uniform vec4 WorldClipPlanes[6];
   4 void world_clip_planes_calc_clip_distance(vec3 wpos)
   5 {
   6         gl_ClipDistance[0] = dot(WorldClipPlanes[0].xyz, wpos) + WorldClipPlanes[0].w;
   7         gl_ClipDistance[1] = dot(WorldClipPlanes[1].xyz, wpos) + WorldClipPlanes[1].w;
   8         gl_ClipDistance[2] = dot(WorldClipPlanes[2].xyz, wpos) + WorldClipPlanes[2].w;
   9         gl_ClipDistance[3] = dot(WorldClipPlanes[3].xyz, wpos) + WorldClipPlanes[3].w;
  10         gl_ClipDistance[4] = dot(WorldClipPlanes[4].xyz, wpos) + WorldClipPlanes[4].w;
  11         gl_ClipDistance[5] = dot(WorldClipPlanes[5].xyz, wpos) + WorldClipPlanes[5].w;
  12 }
  13 #endif
  14
  15 #define world_clip_planes_set_clip_distance(c) \
  16 { \
  17         gl_ClipDistance[0] = (c)[0]; \
  18         gl_ClipDistance[1] = (c)[1]; \
  19         gl_ClipDistance[2] = (c)[2]; \
  20         gl_ClipDistance[3] = (c)[3]; \
  21         gl_ClipDistance[4] = (c)[4]; \
  22         gl_ClipDistance[5] = (c)[5]; \
  23 }
  24
  25 #endif