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author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-12-10 18:11:31 -0700 |
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committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-12-10 18:11:31 -0700 |
commit | 0c31661e73dd2979df22a275452efc71c7064f81 (patch) | |
tree | 8f6347c716219b513c56d827d88f461fa62da0a6 /src/gallium/auxiliary/util | |
parent | b716de47798defa7d22b0f15b201af6fba27f0b9 (diff) | |
parent | d0bc5293d6e1e9c34fa822b7c2928932ed22462c (diff) |
Merge commit 'origin/gallium-0.1' into gallium-0.2
Diffstat (limited to 'src/gallium/auxiliary/util')
-rw-r--r-- | src/gallium/auxiliary/util/u_prim.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_prim.h b/src/gallium/auxiliary/util/u_prim.h new file mode 100644 index 00000000000..e45e84ded2c --- /dev/null +++ b/src/gallium/auxiliary/util/u_prim.h @@ -0,0 +1,122 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + + +#ifndef U_BLIT_H +#define U_BLIT_H + + +#ifdef __cplusplus +extern "C" { +#endif + +#include "pipe/p_defines.h" + +static INLINE boolean u_validate_pipe_prim( unsigned pipe_prim, unsigned nr ) +{ + boolean ok = TRUE; + + switch (pipe_prim) { + case PIPE_PRIM_POINTS: + ok = (nr >= 1); + break; + case PIPE_PRIM_LINES: + ok = (nr >= 2); + break; + case PIPE_PRIM_LINE_STRIP: + case PIPE_PRIM_LINE_LOOP: + ok = (nr >= 2); + break; + case PIPE_PRIM_TRIANGLES: + ok = (nr >= 3); + break; + case PIPE_PRIM_TRIANGLE_STRIP: + case PIPE_PRIM_TRIANGLE_FAN: + case PIPE_PRIM_POLYGON: + ok = (nr >= 3); + break; + case PIPE_PRIM_QUADS: + ok = (nr >= 4); + break; + case PIPE_PRIM_QUAD_STRIP: + ok = (nr >= 4); + break; + default: + ok = 0; + break; + } + + return ok; +} + + +static INLINE boolean u_trim_pipe_prim( unsigned pipe_prim, unsigned *nr ) +{ + boolean ok = TRUE; + + switch (pipe_prim) { + case PIPE_PRIM_POINTS: + ok = (*nr >= 1); + break; + case PIPE_PRIM_LINES: + ok = (*nr >= 2); + *nr -= (*nr % 2); + break; + case PIPE_PRIM_LINE_STRIP: + case PIPE_PRIM_LINE_LOOP: + ok = (*nr >= 2); + break; + case PIPE_PRIM_TRIANGLES: + ok = (*nr >= 3); + *nr -= (*nr % 3); + break; + case PIPE_PRIM_TRIANGLE_STRIP: + case PIPE_PRIM_TRIANGLE_FAN: + case PIPE_PRIM_POLYGON: + ok = (*nr >= 3); + break; + case PIPE_PRIM_QUADS: + ok = (*nr >= 4); + *nr -= (*nr % 4); + break; + case PIPE_PRIM_QUAD_STRIP: + ok = (*nr >= 4); + *nr -= (*nr % 2); + break; + default: + ok = 0; + break; + } + + if (!ok) + *nr = 0; + + return ok; +} + + +#endif |