diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_prim.h')
-rw-r--r-- | src/gallium/auxiliary/util/u_prim.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_prim.h b/src/gallium/auxiliary/util/u_prim.h index a9b533eea7..10a874f341 100644 --- a/src/gallium/auxiliary/util/u_prim.h +++ b/src/gallium/auxiliary/util/u_prim.h @@ -135,4 +135,39 @@ static INLINE unsigned u_reduced_prim( unsigned pipe_prim ) } } +static INLINE unsigned +u_vertices_per_prim(int primitive) +{ + switch(primitive) { + case PIPE_PRIM_POINTS: + return 1; + case PIPE_PRIM_LINES: + case PIPE_PRIM_LINE_LOOP: + case PIPE_PRIM_LINE_STRIP: + return 2; + case PIPE_PRIM_TRIANGLES: + case PIPE_PRIM_TRIANGLE_STRIP: + case PIPE_PRIM_TRIANGLE_FAN: + return 3; + case PIPE_PRIM_LINES_ADJACENCY: + case PIPE_PRIM_LINE_STRIP_ADJACENCY: + return 4; + case PIPE_PRIM_TRIANGLES_ADJACENCY: + case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY: + return 6; + + /* following primitives should never be used + * with geometry shaders abd their size is + * undefined */ + case PIPE_PRIM_POLYGON: + case PIPE_PRIM_QUADS: + case PIPE_PRIM_QUAD_STRIP: + default: + debug_printf("Unrecognized geometry shader primitive"); + return 3; + } +} + +const char *u_prim_name( unsigned pipe_prim ); + #endif |