2 * Copyright © 2017 Intel Corporation
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26 #include "pipe/p_defines.h"
27 #include "compiler/shader_enums.h"
29 static inline gl_shader_stage
30 stage_from_pipe(enum pipe_shader_type pstage
)
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
,
40 return stages
[pstage
];
43 static inline enum pipe_shader_type
44 stage_to_pipe(gl_shader_stage stage
)
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
,
54 return pstages
[stage
];
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
61 * SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W, SWIZZLE_ZERO, SWIZZLE_ONE
64 * SCS_RED, SCS_GREEN, SCS_BLUE, SCS_ALPHA, SCS_ZERO, SCS_ONE
66 * which is simply adding 4 then modding by 8 (or anding with 7).
68 static inline enum isl_channel_select
69 pipe_swizzle_to_isl_channel(enum pipe_swizzle swizzle
)
71 return (swizzle
+ 4) & 7;