diff options
Diffstat (limited to 'source/blender/draw/intern/shaders/common_subdiv_ibo_tris_comp.glsl')
| -rw-r--r-- | source/blender/draw/intern/shaders/common_subdiv_ibo_tris_comp.glsl | 41 |
1 files changed, 31 insertions, 10 deletions
diff --git a/source/blender/draw/intern/shaders/common_subdiv_ibo_tris_comp.glsl b/source/blender/draw/intern/shaders/common_subdiv_ibo_tris_comp.glsl index 3dccc82541e..f1275b36c34 100644 --- a/source/blender/draw/intern/shaders/common_subdiv_ibo_tris_comp.glsl +++ b/source/blender/draw/intern/shaders/common_subdiv_ibo_tris_comp.glsl @@ -3,18 +3,28 @@ /* Generate triangles from subdivision quads indices. */ -layout(std430, binding = 1) writeonly buffer outputTriangles +layout(std430, binding = 1) readonly restrict buffer extraCoarseFaceData +{ + uint extra_coarse_face_data[]; +}; + +layout(std430, binding = 2) writeonly buffer outputTriangles { uint output_tris[]; }; #ifndef SINGLE_MATERIAL -layout(std430, binding = 2) readonly buffer inputPolygonMatOffset +layout(std430, binding = 3) readonly buffer inputPolygonMatOffset { int polygon_mat_offset[]; }; #endif +bool is_face_hidden(uint coarse_quad_index) +{ + return (extra_coarse_face_data[coarse_quad_index] & coarse_face_hidden_mask) != 0; +} + void main() { uint quad_index = get_global_invocation_index(); @@ -24,20 +34,31 @@ void main() uint loop_index = quad_index * 4; + uint coarse_quad_index = coarse_polygon_index_from_subdiv_quad_index(quad_index, + coarse_poly_count); + #ifdef SINGLE_MATERIAL uint triangle_loop_index = quad_index * 6; #else - uint coarse_quad_index = coarse_polygon_index_from_subdiv_quad_index(quad_index, - coarse_poly_count); int mat_offset = polygon_mat_offset[coarse_quad_index]; int triangle_loop_index = (int(quad_index) + mat_offset) * 6; #endif - output_tris[triangle_loop_index + 0] = loop_index + 0; - output_tris[triangle_loop_index + 1] = loop_index + 1; - output_tris[triangle_loop_index + 2] = loop_index + 2; - output_tris[triangle_loop_index + 3] = loop_index + 0; - output_tris[triangle_loop_index + 4] = loop_index + 2; - output_tris[triangle_loop_index + 5] = loop_index + 3; + if (is_face_hidden(coarse_quad_index)) { + output_tris[triangle_loop_index + 0] = 0xffffffff; + output_tris[triangle_loop_index + 1] = 0xffffffff; + output_tris[triangle_loop_index + 2] = 0xffffffff; + output_tris[triangle_loop_index + 3] = 0xffffffff; + output_tris[triangle_loop_index + 4] = 0xffffffff; + output_tris[triangle_loop_index + 5] = 0xffffffff; + } + else { + output_tris[triangle_loop_index + 0] = loop_index + 0; + output_tris[triangle_loop_index + 1] = loop_index + 1; + output_tris[triangle_loop_index + 2] = loop_index + 2; + output_tris[triangle_loop_index + 3] = loop_index + 0; + output_tris[triangle_loop_index + 4] = loop_index + 2; + output_tris[triangle_loop_index + 5] = loop_index + 3; + } } |