1/*
2 * Copyright © 2017 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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23#ifndef CROCUS_PIPE_H
24#define CROCUS_PIPE_H
25
26#include "pipe/p_defines.h"
27#include "compiler/shader_enums.h"
28
29static inline gl_shader_stage
30stage_from_pipe(enum pipe_shader_type pstage)
31{
32   static const gl_shader_stage stages[PIPE_SHADER_TYPES] = {
33      [PIPE_SHADER_VERTEX] = MESA_SHADER_VERTEX,
34      [PIPE_SHADER_TESS_CTRL] = MESA_SHADER_TESS_CTRL,
35      [PIPE_SHADER_TESS_EVAL] = MESA_SHADER_TESS_EVAL,
36      [PIPE_SHADER_GEOMETRY] = MESA_SHADER_GEOMETRY,
37      [PIPE_SHADER_FRAGMENT] = MESA_SHADER_FRAGMENT,
38      [PIPE_SHADER_COMPUTE] = MESA_SHADER_COMPUTE,
39   };
40   return stages[pstage];
41}
42
43static inline enum pipe_shader_type
44stage_to_pipe(gl_shader_stage stage)
45{
46   static const enum pipe_shader_type pstages[MESA_SHADER_STAGES] = {
47      [MESA_SHADER_VERTEX] = PIPE_SHADER_VERTEX,
48      [MESA_SHADER_TESS_CTRL] = PIPE_SHADER_TESS_CTRL,
49      [MESA_SHADER_TESS_EVAL] = PIPE_SHADER_TESS_EVAL,
50      [MESA_SHADER_GEOMETRY] = PIPE_SHADER_GEOMETRY,
51      [MESA_SHADER_FRAGMENT] = PIPE_SHADER_FRAGMENT,
52      [MESA_SHADER_COMPUTE] = PIPE_SHADER_COMPUTE,
53   };
54   return pstages[stage];
55}
56
57/**
58 * Convert an swizzle enumeration (i.e. PIPE_SWIZZLE_X) to one of the HW's
59 * "Shader Channel Select" enumerations (i.e. SCS_RED).  The mappings are
60 *
61 * SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W, SWIZZLE_ZERO, SWIZZLE_ONE
62 *         0          1          2          3             4            5
63 *         4          5          6          7             0            1
64 *   SCS_RED, SCS_GREEN,  SCS_BLUE, SCS_ALPHA,     SCS_ZERO,     SCS_ONE
65 *
66 * which is simply adding 4 then modding by 8 (or anding with 7).
67 */
68static inline enum isl_channel_select
69pipe_swizzle_to_isl_channel(enum pipe_swizzle swizzle)
70{
71   return (swizzle + 4) & 7;
72}
73
74#endif
75