2 * Copyright 2017 Advanced Micro Devices, Inc.
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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
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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 "ac_shader_args.h"
31 #include "compiler/shader_enums.h"
35 #define AC_LLVM_MAX_OUTPUTS (VARYING_SLOT_VAR31 + 1)
37 #define AC_MAX_INLINE_PUSH_CONSTS 8
39 enum ac_descriptor_type
{
49 /* Document the shader ABI during compilation. This is what allows radeonsi and
50 * radv to share a compiler backend.
52 struct ac_shader_abi
{
53 LLVMValueRef outputs
[AC_LLVM_MAX_OUTPUTS
* 4];
55 /* These input registers sometimes need to be fixed up. */
56 LLVMValueRef vertex_id
;
57 LLVMValueRef instance_id
;
58 LLVMValueRef persp_centroid
, linear_centroid
;
59 LLVMValueRef color0
, color1
;
60 LLVMValueRef user_data
;
62 /* For VS and PS: pre-loaded shader inputs.
64 * Currently only used for NIR shaders; indexed by variables'
69 /* Varying -> attribute number mapping. Also NIR-only */
70 unsigned fs_input_attr_indices
[MAX_VARYING
];
72 void (*emit_outputs
)(struct ac_shader_abi
*abi
,
76 void (*emit_vertex
)(struct ac_shader_abi
*abi
,
80 void (*emit_primitive
)(struct ac_shader_abi
*abi
,
83 void (*emit_kill
)(struct ac_shader_abi
*abi
, LLVMValueRef visible
);
85 LLVMValueRef (*load_inputs
)(struct ac_shader_abi
*abi
,
87 unsigned driver_location
,
89 unsigned num_components
,
90 unsigned vertex_index
,
94 LLVMValueRef (*load_tess_varyings
)(struct ac_shader_abi
*abi
,
96 LLVMValueRef vertex_index
,
97 LLVMValueRef param_index
,
100 unsigned driver_location
,
102 unsigned num_components
,
107 void (*store_tcs_outputs
)(struct ac_shader_abi
*abi
,
108 const struct nir_variable
*var
,
109 LLVMValueRef vertex_index
,
110 LLVMValueRef param_index
,
111 unsigned const_index
,
115 LLVMValueRef (*load_tess_coord
)(struct ac_shader_abi
*abi
);
117 LLVMValueRef (*load_patch_vertices_in
)(struct ac_shader_abi
*abi
);
119 LLVMValueRef (*load_tess_level
)(struct ac_shader_abi
*abi
,
121 bool load_default_state
);
124 LLVMValueRef (*load_ubo
)(struct ac_shader_abi
*abi
, LLVMValueRef index
);
127 * Load the descriptor for the given buffer.
129 * \param buffer the buffer as presented in NIR: this is the descriptor
130 * in Vulkan, and the buffer index in OpenGL/Gallium
131 * \param write whether buffer contents will be written
133 LLVMValueRef (*load_ssbo
)(struct ac_shader_abi
*abi
,
134 LLVMValueRef buffer
, bool write
);
137 * Load a descriptor associated to a sampler.
139 * \param descriptor_set the descriptor set index (only for Vulkan)
140 * \param base_index the base index of the sampler variable
141 * \param constant_index constant part of an array index (or 0, if the
142 * sampler variable is not an array)
143 * \param index non-constant part of an array index (may be NULL)
144 * \param desc_type the type of descriptor to load
145 * \param image whether the descriptor is loaded for an image operation
147 LLVMValueRef (*load_sampler_desc
)(struct ac_shader_abi
*abi
,
148 unsigned descriptor_set
,
150 unsigned constant_index
,
152 enum ac_descriptor_type desc_type
,
153 bool image
, bool write
,
157 * Load a Vulkan-specific resource.
159 * \param index resource index
160 * \param desc_set descriptor set
161 * \param binding descriptor set binding
163 LLVMValueRef (*load_resource
)(struct ac_shader_abi
*abi
,
168 LLVMValueRef (*load_sample_position
)(struct ac_shader_abi
*abi
,
169 LLVMValueRef sample_id
);
171 LLVMValueRef (*load_local_group_size
)(struct ac_shader_abi
*abi
);
173 LLVMValueRef (*load_sample_mask_in
)(struct ac_shader_abi
*abi
);
175 LLVMValueRef (*load_base_vertex
)(struct ac_shader_abi
*abi
);
177 LLVMValueRef (*emit_fbfetch
)(struct ac_shader_abi
*abi
);
179 /* Whether to clamp the shadow reference value to [0,1]on GFX8. Radeonsi currently
180 * uses it due to promoting D16 to D32, but radv needs it off. */
181 bool clamp_shadow_reference
;
182 bool interp_at_sample_force_center
;
184 /* Whether bounds checks are required */
185 bool robust_buffer_access
;
188 #endif /* AC_SHADER_ABI_H */