| /* |
| * Copyright © 2017 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * on the rights to use, copy, modify, merge, publish, distribute, sub |
| * license, and/or sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| /** |
| * \file |
| * \brief SPIRV-V extension handling. See ARB_spirv_extensions |
| */ |
| |
| #include <stdbool.h> |
| #include "spirv_extensions.h" |
| |
| GLuint |
| _mesa_get_spirv_extension_count(struct gl_context *ctx) |
| { |
| if (ctx->Const.SpirVExtensions == NULL) |
| return 0; |
| |
| return ctx->Const.SpirVExtensions->count; |
| } |
| |
| const GLubyte * |
| _mesa_get_enabled_spirv_extension(struct gl_context *ctx, |
| GLuint index) |
| { |
| unsigned int n = 0; |
| |
| if (ctx->Const.SpirVExtensions == NULL) |
| return (const GLubyte *) 0; |
| |
| for (unsigned int i = 0; i < SPV_EXTENSIONS_COUNT; i++) { |
| if (ctx->Const.SpirVExtensions->supported[i]) { |
| if (n == index) |
| return (const GLubyte *) _mesa_spirv_extensions_to_string(i); |
| else |
| n++; |
| } |
| } |
| |
| return (const GLubyte *) 0; |
| } |
| |
| const char * |
| _mesa_spirv_extensions_to_string(enum SpvExtension ext) |
| { |
| #define STR(x) case x: return #x; |
| switch (ext) { |
| STR(SPV_KHR_16bit_storage); |
| STR(SPV_KHR_device_group); |
| STR(SPV_KHR_multiview); |
| STR(SPV_KHR_shader_ballot); |
| STR(SPV_KHR_shader_draw_parameters); |
| STR(SPV_KHR_storage_buffer_storage_class); |
| STR(SPV_KHR_subgroup_vote); |
| STR(SPV_KHR_variable_pointers); |
| STR(SPV_AMD_gcn_shader); |
| case SPV_EXTENSIONS_COUNT: |
| unreachable("Unknown SPIR-V extension"); |
| } |
| #undef STR |
| |
| return "unknown"; |
| } |
| |
| /** |
| * Sets the supported flags for known SPIR-V extensions based on the |
| * capabilites supported (spirv capabilities based on the spirv to nir |
| * support). |
| * |
| * One could argue that makes more sense in the other way around, as from the |
| * spec pov capabilities are enable for a given extension. But from our pov, |
| * we support or not (depending on the driver) some given capability, and |
| * spirv_to_nir check for capabilities not extensions. Also we usually fill |
| * first the supported capabilities, that are not always related to an |
| * extension. |
| */ |
| void |
| _mesa_fill_supported_spirv_extensions(struct spirv_supported_extensions *ext, |
| const struct spirv_supported_capabilities *cap) |
| { |
| memset(ext->supported, 0, sizeof(ext->supported)); |
| |
| ext->count = 0; |
| |
| ext->supported[SPV_KHR_shader_draw_parameters] = cap->draw_parameters; |
| ext->supported[SPV_KHR_multiview] = cap->multiview; |
| ext->supported[SPV_KHR_storage_buffer_storage_class] = true; |
| ext->supported[SPV_KHR_variable_pointers] = cap->variable_pointers; |
| ext->supported[SPV_AMD_gcn_shader] = cap->amd_gcn_shader; |
| ext->supported[SPV_KHR_shader_ballot] = cap->subgroup_ballot; |
| ext->supported[SPV_KHR_subgroup_vote] = cap->subgroup_vote; |
| |
| for (unsigned i = 0; i < SPV_EXTENSIONS_COUNT; i++) { |
| if (ext->supported[i]) |
| ext->count++; |
| } |
| } |