diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_shader_semantics.h')
-rw-r--r-- | src/gallium/drivers/r300/r300_shader_semantics.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_shader_semantics.h b/src/gallium/drivers/r300/r300_shader_semantics.h new file mode 100644 index 0000000..6796841 --- /dev/null +++ b/src/gallium/drivers/r300/r300_shader_semantics.h @@ -0,0 +1,66 @@ +/* + * Copyright 2009 Marek Olšák <maraeo@gmail.com> + * + * 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 + * on 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 + * THE AUTHOR(S) AND/OR THEIR 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 R300_SHADER_SEMANTICS_H +#define R300_SHADER_SEMANTICS_H + +#define ATTR_UNUSED (-1) +#define ATTR_COLOR_COUNT 2 +#define ATTR_GENERIC_COUNT 16 + +/* This structure contains information about what attributes are written by VS + * or read by FS. (but not both) It's much easier to work with than + * tgsi_shader_info. + * + * The variables contain indices to tgsi_shader_info semantics and those + * indices are nothing else than input/output register numbers. */ +struct r300_shader_semantics { + int pos; + int psize; + int color[ATTR_COLOR_COUNT]; + int bcolor[ATTR_COLOR_COUNT]; + int generic[ATTR_GENERIC_COUNT]; + int fog; + int wpos; +}; + +static INLINE void r300_shader_semantics_reset( + struct r300_shader_semantics* info) +{ + int i; + + info->pos = ATTR_UNUSED; + info->psize = ATTR_UNUSED; + info->fog = ATTR_UNUSED; + info->wpos = ATTR_UNUSED; + + for (i = 0; i < ATTR_COLOR_COUNT; i++) { + info->color[i] = ATTR_UNUSED; + info->bcolor[i] = ATTR_UNUSED; + } + + for (i = 0; i < ATTR_GENERIC_COUNT; i++) { + info->generic[i] = ATTR_UNUSED; + } +} + +#endif |