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 "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_vertex_with_counter
)(struct ac_shader_abi
*abi
,
85 LLVMValueRef vertexidx
,
88 LLVMValueRef (*load_inputs
)(struct ac_shader_abi
*abi
,
90 unsigned driver_location
,
92 unsigned num_components
,
93 unsigned vertex_index
,
97 LLVMValueRef (*load_tess_varyings
)(struct ac_shader_abi
*abi
,
99 LLVMValueRef vertex_index
,
100 LLVMValueRef param_index
,
101 unsigned const_index
,
103 unsigned driver_location
,
105 unsigned num_components
,
110 void (*store_tcs_outputs
)(struct ac_shader_abi
*abi
,
111 const struct nir_variable
*var
,
112 LLVMValueRef vertex_index
,
113 LLVMValueRef param_index
,
114 unsigned const_index
,
118 unsigned driver_location
);
120 LLVMValueRef (*load_tess_coord
)(struct ac_shader_abi
*abi
);
122 LLVMValueRef (*load_patch_vertices_in
)(struct ac_shader_abi
*abi
);
124 LLVMValueRef (*load_tess_level
)(struct ac_shader_abi
*abi
,
126 bool load_default_state
);
129 LLVMValueRef (*load_ubo
)(struct ac_shader_abi
*abi
, LLVMValueRef index
);
132 * Load the descriptor for the given buffer.
134 * \param buffer the buffer as presented in NIR: this is the descriptor
135 * in Vulkan, and the buffer index in OpenGL/Gallium
136 * \param write whether buffer contents will be written
138 LLVMValueRef (*load_ssbo
)(struct ac_shader_abi
*abi
,
139 LLVMValueRef buffer
, bool write
);
142 * Load a descriptor associated to a sampler.
144 * \param descriptor_set the descriptor set index (only for Vulkan)
145 * \param base_index the base index of the sampler variable
146 * \param constant_index constant part of an array index (or 0, if the
147 * sampler variable is not an array)
148 * \param index non-constant part of an array index (may be NULL)
149 * \param desc_type the type of descriptor to load
150 * \param image whether the descriptor is loaded for an image operation
152 LLVMValueRef (*load_sampler_desc
)(struct ac_shader_abi
*abi
,
153 unsigned descriptor_set
,
155 unsigned constant_index
,
157 enum ac_descriptor_type desc_type
,
158 bool image
, bool write
,
162 * Load a Vulkan-specific resource.
164 * \param index resource index
165 * \param desc_set descriptor set
166 * \param binding descriptor set binding
168 LLVMValueRef (*load_resource
)(struct ac_shader_abi
*abi
,
173 LLVMValueRef (*load_sample_position
)(struct ac_shader_abi
*abi
,
174 LLVMValueRef sample_id
);
176 LLVMValueRef (*load_local_group_size
)(struct ac_shader_abi
*abi
);
178 LLVMValueRef (*load_sample_mask_in
)(struct ac_shader_abi
*abi
);
180 LLVMValueRef (*load_base_vertex
)(struct ac_shader_abi
*abi
);
182 LLVMValueRef (*emit_fbfetch
)(struct ac_shader_abi
*abi
);
184 /* Whether to clamp the shadow reference value to [0,1]on GFX8. Radeonsi currently
185 * uses it due to promoting D16 to D32, but radv needs it off. */
186 bool clamp_shadow_reference
;
187 bool interp_at_sample_force_center
;
189 /* Whether bounds checks are required */
190 bool robust_buffer_access
;
192 /* Check for Inf interpolation coeff */
193 bool kill_ps_if_inf_interp
;
195 /* Whether undef values must be converted to zero */
196 bool convert_undef_to_zero
;
198 /* Clamp div by 0 (so it won't produce NaN) */
199 bool clamp_div_by_zero
;
202 #endif /* AC_SHADER_ABI_H */