src/gallium/drivers/freedreno/a3xx/fd3_compiler.h

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29 #ifndef FD3_COMPILER_H_
  30 #define FD3_COMPILER_H_
  31
  32 #include "fd3_program.h"
  33 #include "fd3_util.h"
  34
  35
  36 /* ************************************************************************* */
  37 /* split this out or find some helper to use.. like main/bitset.h.. */
  38
  39 #define MAX_REG 256
  40
  41 typedef uint8_t regmask_t[2 * MAX_REG / 8];
  42
  43 static inline unsigned regmask_idx(struct ir3_register *reg)
  44 {
  45         unsigned num = reg->num;
  46         assert(num < MAX_REG);
  47         if (reg->flags & IR3_REG_HALF)
  48                 num += MAX_REG;
  49         return num;
  50 }
  51
  52 static inline void regmask_init(regmask_t *regmask)
  53 {
  54         memset(regmask, 0, sizeof(*regmask));
  55 }
  56
  57 static inline void regmask_set(regmask_t *regmask, struct ir3_register *reg)
  58 {
  59         unsigned idx = regmask_idx(reg);
  60         unsigned i;
  61         for (i = 0; i < 4; i++, idx++)
  62                 if (reg->wrmask & (1 << i))
  63                         (*regmask)[idx / 8] |= 1 << (idx % 8);
  64 }
  65
  66 static inline unsigned regmask_get(regmask_t *regmask,
  67                 struct ir3_register *reg)
  68 {
  69         unsigned idx = regmask_idx(reg);
  70         unsigned i;
  71         for (i = 0; i < 4; i++, idx++)
  72                 if (reg->wrmask & (1 << i))
  73                         if ((*regmask)[idx / 8] & (1 << (idx % 8)))
  74                                 return true;
  75         return false;
  76 }
  77
  78 /* comp:
  79  *   0 - x
  80  *   1 - y
  81  *   2 - z
  82  *   3 - w
  83  */
  84 static inline uint32_t regid(int num, int comp)
  85 {
  86         return (num << 2) | (comp & 0x3);
  87 }
  88
  89 /* ************************************************************************* */
  90
  91 int fd3_compile_shader(struct fd3_shader_stateobj *so,
  92                 const struct tgsi_token *tokens);
  93
  94 #endif /* FD3_COMPILER_H_ */