src/mesa/drivers/dri/i965/brw_program.h

   1 /*
   2  * Copyright © 2011 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #ifndef BRW_PROGRAM_H
  25 #define BRW_PROGRAM_H
  26
  27 /**
  28  * Sampler information needed by VS, WM, and GS program cache keys.
  29  */
  30 struct brw_sampler_prog_key_data {
  31    /**
  32     * Per-sampler comparison functions:
  33     *
  34     * If comparison mode is GL_COMPARE_R_TO_TEXTURE, then this is set to one
  35     * of GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL, GL_GREATER, GL_NOTEQUAL,
  36     * GL_GEQUAL, or GL_ALWAYS.  Otherwise (comparison mode is GL_NONE), this
  37     * field is irrelevant so it's left as GL_NONE (0).
  38     *
  39     * While this is a GLenum, all possible values fit in 16-bits.
  40     */
  41    uint16_t compare_funcs[BRW_MAX_TEX_UNIT];
  42
  43    /**
  44     * EXT_texture_swizzle and DEPTH_TEXTURE_MODE swizzles.
  45     */
  46    uint16_t swizzles[BRW_MAX_TEX_UNIT];
  47
  48    uint16_t gl_clamp_mask[3];
  49
  50    /**
  51     * YUV conversions, needed for the GL_MESA_ycbcr extension.
  52     */
  53    uint16_t yuvtex_mask;
  54    uint16_t yuvtex_swap_mask; /**< UV swaped */
  55 };
  56
  57 void brw_populate_sampler_prog_key_data(struct gl_context *ctx,
  58                                         struct brw_sampler_prog_key_data *key, int i);
  59
  60 #endif