| /* |
| * Copyright 2017 Advanced Micro Devices, Inc. |
| * |
| * 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. |
| */ |
| |
| #ifndef AC_SHADER_ABI_H |
| #define AC_SHADER_ABI_H |
| |
| #include <llvm-c/Core.h> |
| |
| enum ac_descriptor_type { |
| AC_DESC_IMAGE, |
| AC_DESC_FMASK, |
| AC_DESC_SAMPLER, |
| AC_DESC_BUFFER, |
| }; |
| |
| /* Document the shader ABI during compilation. This is what allows radeonsi and |
| * radv to share a compiler backend. |
| */ |
| struct ac_shader_abi { |
| LLVMValueRef base_vertex; |
| LLVMValueRef start_instance; |
| LLVMValueRef draw_id; |
| LLVMValueRef vertex_id; |
| LLVMValueRef instance_id; |
| LLVMValueRef gs_prim_id; |
| LLVMValueRef gs_invocation_id; |
| LLVMValueRef frag_pos[4]; |
| LLVMValueRef front_face; |
| LLVMValueRef ancillary; |
| LLVMValueRef sample_coverage; |
| |
| /* For VS and PS: pre-loaded shader inputs. |
| * |
| * Currently only used for NIR shaders; indexed by variables' |
| * driver_location. |
| */ |
| LLVMValueRef *inputs; |
| |
| void (*emit_outputs)(struct ac_shader_abi *abi, |
| unsigned max_outputs, |
| LLVMValueRef *addrs); |
| |
| void (*emit_vertex)(struct ac_shader_abi *abi, |
| unsigned stream, |
| LLVMValueRef *addrs); |
| |
| LLVMValueRef (*load_ubo)(struct ac_shader_abi *abi, LLVMValueRef index); |
| |
| /** |
| * Load the descriptor for the given buffer. |
| * |
| * \param buffer the buffer as presented in NIR: this is the descriptor |
| * in Vulkan, and the buffer index in OpenGL/Gallium |
| * \param write whether buffer contents will be written |
| */ |
| LLVMValueRef (*load_ssbo)(struct ac_shader_abi *abi, |
| LLVMValueRef buffer, bool write); |
| |
| /** |
| * Load a descriptor associated to a sampler. |
| * |
| * \param descriptor_set the descriptor set index (only for Vulkan) |
| * \param base_index the base index of the sampler variable |
| * \param constant_index constant part of an array index (or 0, if the |
| * sampler variable is not an array) |
| * \param index non-constant part of an array index (may be NULL) |
| * \param desc_type the type of descriptor to load |
| * \param image whether the descriptor is loaded for an image operation |
| */ |
| LLVMValueRef (*load_sampler_desc)(struct ac_shader_abi *abi, |
| unsigned descriptor_set, |
| unsigned base_index, |
| unsigned constant_index, |
| LLVMValueRef index, |
| enum ac_descriptor_type desc_type, |
| bool image, bool write); |
| |
| /* Whether to clamp the shadow reference value to [0,1]on VI. Radeonsi currently |
| * uses it due to promoting D16 to D32, but radv needs it off. */ |
| bool clamp_shadow_reference; |
| }; |
| |
| #endif /* AC_SHADER_ABI_H */ |