src/gallium/drivers/iris/iris_pipe.h

   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 IRIS_PIPE_H
  24 #define IRIS_PIPE_H
  25
  26 #include "pipe/p_defines.h"
  27 #include "compiler/shader_enums.h"
  28
  29 static inline gl_shader_stage
  30 stage_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
  43 static inline enum pipe_shader_type
  44 stage_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  */
  68 static inline enum isl_channel_select
  69 pipe_swizzle_to_isl_channel(enum pipe_swizzle swizzle)
  70 {
  71    return (swizzle + 4) & 7;
  72 }
  73
  74 #endif