2 * Copyright 2017 Advanced Micro Devices, Inc.
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:
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
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.
24 #ifndef AC_SHADER_ABI_H
25 #define AC_SHADER_ABI_H
27 #include <llvm-c/Core.h>
29 #include "compiler/shader_enums.h"
33 #define AC_LLVM_MAX_OUTPUTS (VARYING_SLOT_VAR31 + 1)
35 #define AC_MAX_INLINE_PUSH_CONSTS 8
37 enum ac_descriptor_type
{
44 /* Document the shader ABI during compilation. This is what allows radeonsi and
45 * radv to share a compiler backend.
47 struct ac_shader_abi
{
48 LLVMValueRef base_vertex
;
49 LLVMValueRef start_instance
;
51 LLVMValueRef vertex_id
;
52 LLVMValueRef instance_id
;
53 LLVMValueRef tcs_patch_id
;
54 LLVMValueRef tcs_rel_ids
;
55 LLVMValueRef tes_patch_id
;
56 LLVMValueRef gs_prim_id
;
57 LLVMValueRef gs_invocation_id
;
58 LLVMValueRef frag_pos
[4];
59 LLVMValueRef front_face
;
60 LLVMValueRef ancillary
;
61 LLVMValueRef sample_coverage
;
62 LLVMValueRef prim_mask
;
64 LLVMValueRef local_invocation_ids
;
65 LLVMValueRef num_work_groups
;
66 LLVMValueRef workgroup_ids
[3];
70 LLVMValueRef push_constants
;
71 LLVMValueRef inline_push_consts
[AC_MAX_INLINE_PUSH_CONSTS
];
72 unsigned num_inline_push_consts
;
73 unsigned base_inline_push_consts
;
74 LLVMValueRef view_index
;
76 LLVMValueRef outputs
[AC_LLVM_MAX_OUTPUTS
* 4];
78 /* For VS and PS: pre-loaded shader inputs.
80 * Currently only used for NIR shaders; indexed by variables'
85 /* Varying -> attribute number mapping. Also NIR-only */
86 unsigned fs_input_attr_indices
[MAX_VARYING
];
88 void (*emit_outputs
)(struct ac_shader_abi
*abi
,
92 void (*emit_vertex
)(struct ac_shader_abi
*abi
,
96 void (*emit_primitive
)(struct ac_shader_abi
*abi
,
99 void (*emit_kill
)(struct ac_shader_abi
*abi
, LLVMValueRef visible
);
101 LLVMValueRef (*load_inputs
)(struct ac_shader_abi
*abi
,
103 unsigned driver_location
,
105 unsigned num_components
,
106 unsigned vertex_index
,
107 unsigned const_index
,
110 LLVMValueRef (*load_tess_varyings
)(struct ac_shader_abi
*abi
,
112 LLVMValueRef vertex_index
,
113 LLVMValueRef param_index
,
114 unsigned const_index
,
116 unsigned driver_location
,
118 unsigned num_components
,
123 void (*store_tcs_outputs
)(struct ac_shader_abi
*abi
,
124 const struct nir_variable
*var
,
125 LLVMValueRef vertex_index
,
126 LLVMValueRef param_index
,
127 unsigned const_index
,
131 LLVMValueRef (*load_tess_coord
)(struct ac_shader_abi
*abi
);
133 LLVMValueRef (*load_patch_vertices_in
)(struct ac_shader_abi
*abi
);
135 LLVMValueRef (*load_tess_level
)(struct ac_shader_abi
*abi
,
136 unsigned varying_id
);
139 LLVMValueRef (*load_ubo
)(struct ac_shader_abi
*abi
, LLVMValueRef index
);
142 * Load the descriptor for the given buffer.
144 * \param buffer the buffer as presented in NIR: this is the descriptor
145 * in Vulkan, and the buffer index in OpenGL/Gallium
146 * \param write whether buffer contents will be written
148 LLVMValueRef (*load_ssbo
)(struct ac_shader_abi
*abi
,
149 LLVMValueRef buffer
, bool write
);
152 * Load a descriptor associated to a sampler.
154 * \param descriptor_set the descriptor set index (only for Vulkan)
155 * \param base_index the base index of the sampler variable
156 * \param constant_index constant part of an array index (or 0, if the
157 * sampler variable is not an array)
158 * \param index non-constant part of an array index (may be NULL)
159 * \param desc_type the type of descriptor to load
160 * \param image whether the descriptor is loaded for an image operation
162 LLVMValueRef (*load_sampler_desc
)(struct ac_shader_abi
*abi
,
163 unsigned descriptor_set
,
165 unsigned constant_index
,
167 enum ac_descriptor_type desc_type
,
168 bool image
, bool write
,
172 * Load a Vulkan-specific resource.
174 * \param index resource index
175 * \param desc_set descriptor set
176 * \param binding descriptor set binding
178 LLVMValueRef (*load_resource
)(struct ac_shader_abi
*abi
,
183 LLVMValueRef (*lookup_interp_param
)(struct ac_shader_abi
*abi
,
184 enum glsl_interp_mode interp
,
187 LLVMValueRef (*load_sample_position
)(struct ac_shader_abi
*abi
,
188 LLVMValueRef sample_id
);
190 LLVMValueRef (*load_local_group_size
)(struct ac_shader_abi
*abi
);
192 LLVMValueRef (*load_sample_mask_in
)(struct ac_shader_abi
*abi
);
194 LLVMValueRef (*load_base_vertex
)(struct ac_shader_abi
*abi
);
196 /* Whether to clamp the shadow reference value to [0,1]on VI. Radeonsi currently
197 * uses it due to promoting D16 to D32, but radv needs it off. */
198 bool clamp_shadow_reference
;
200 /* Whether to workaround GFX9 ignoring the stride for the buffer size if IDXEN=0
201 * and LLVM optimizes an indexed load with constant index to IDXEN=0. */
202 bool gfx9_stride_size_workaround
;
205 #endif /* AC_SHADER_ABI_H */