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26 * \brief SPIRV-V extension handling. See ARB_spirv_extensions
30 #include "spirv_extensions.h"
33 _mesa_get_spirv_extension_count(struct gl_context
*ctx
)
35 if (ctx
->Const
.SpirVExtensions
== NULL
)
38 return ctx
->Const
.SpirVExtensions
->count
;
42 _mesa_get_enabled_spirv_extension(struct gl_context
*ctx
,
47 if (ctx
->Const
.SpirVExtensions
== NULL
)
48 return (const GLubyte
*) 0;
50 for (unsigned int i
= 0; i
< SPV_EXTENSIONS_COUNT
; i
++) {
51 if (ctx
->Const
.SpirVExtensions
->supported
[i
]) {
53 return (const GLubyte
*) _mesa_spirv_extensions_to_string(i
);
59 return (const GLubyte
*) 0;
63 _mesa_spirv_extensions_to_string(enum SpvExtension ext
)
65 #define STR(x) case x: return #x;
67 STR(SPV_KHR_16bit_storage
);
68 STR(SPV_KHR_device_group
);
69 STR(SPV_KHR_multiview
);
70 STR(SPV_KHR_shader_ballot
);
71 STR(SPV_KHR_shader_draw_parameters
);
72 STR(SPV_KHR_storage_buffer_storage_class
);
73 STR(SPV_KHR_subgroup_vote
);
74 STR(SPV_KHR_variable_pointers
);
75 STR(SPV_AMD_gcn_shader
);
76 case SPV_EXTENSIONS_COUNT
:
77 unreachable("Unknown SPIR-V extension");
85 * Sets the supported flags for known SPIR-V extensions based on the
86 * capabilites supported (spirv capabilities based on the spirv to nir
89 * One could argue that makes more sense in the other way around, as from the
90 * spec pov capabilities are enable for a given extension. But from our pov,
91 * we support or not (depending on the driver) some given capability, and
92 * spirv_to_nir check for capabilities not extensions. Also we usually fill
93 * first the supported capabilities, that are not always related to an
97 _mesa_fill_supported_spirv_extensions(struct spirv_supported_extensions
*ext
,
98 const struct spirv_supported_capabilities
*cap
)
100 memset(ext
->supported
, 0, sizeof(ext
->supported
));
104 ext
->supported
[SPV_KHR_shader_draw_parameters
] = cap
->draw_parameters
;
105 ext
->supported
[SPV_KHR_multiview
] = cap
->multiview
;
106 ext
->supported
[SPV_KHR_storage_buffer_storage_class
] = true;
107 ext
->supported
[SPV_KHR_variable_pointers
] = cap
->variable_pointers
;
108 ext
->supported
[SPV_AMD_gcn_shader
] = cap
->amd_gcn_shader
;
109 ext
->supported
[SPV_KHR_shader_ballot
] = cap
->subgroup_ballot
;
110 ext
->supported
[SPV_KHR_subgroup_vote
] = cap
->subgroup_vote
;
112 for (unsigned i
= 0; i
< SPV_EXTENSIONS_COUNT
; i
++) {
113 if (ext
->supported
[i
])