1 /**************************************************************************
2 *
3 * Copyright 2008 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #ifndef TGSI_SCAN_H
29 #define TGSI_SCAN_H
30
31
32 #include "pipe/p_compiler.h"
33 #include "pipe/p_state.h"
34 #include "pipe/p_shader_tokens.h"
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 /**
41 * Shader summary info
42 */
43 struct tgsi_shader_info
44 {
45 uint num_tokens;
46
47 ubyte num_inputs;
48 ubyte num_outputs;
49 ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS]; /**< TGSI_SEMANTIC_x */
50 ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
51 ubyte input_interpolate[PIPE_MAX_SHADER_INPUTS];
52 ubyte input_interpolate_loc[PIPE_MAX_SHADER_INPUTS];
53 ubyte input_usage_mask[PIPE_MAX_SHADER_INPUTS];
54 ubyte input_cylindrical_wrap[PIPE_MAX_SHADER_INPUTS];
55 ubyte output_semantic_name[PIPE_MAX_SHADER_OUTPUTS]; /**< TGSI_SEMANTIC_x */
56 ubyte output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
57 ubyte output_usagemask[PIPE_MAX_SHADER_OUTPUTS];
58 ubyte output_streams[PIPE_MAX_SHADER_OUTPUTS];
59
60 ubyte num_system_values;
61 ubyte system_value_semantic_name[PIPE_MAX_SHADER_INPUTS];
62
63 ubyte processor;
64
65 uint file_mask[TGSI_FILE_COUNT]; /**< bitmask of declared registers */
66 uint file_count[TGSI_FILE_COUNT]; /**< number of declared registers */
67 int file_max[TGSI_FILE_COUNT]; /**< highest index of declared registers */
68 int const_file_max[PIPE_MAX_CONSTANT_BUFFERS];
69 unsigned const_buffers_declared; /**< bitmask of declared const buffers */
70 unsigned samplers_declared; /**< bitmask of declared samplers */
71 ubyte sampler_targets[PIPE_MAX_SHADER_SAMPLER_VIEWS]; /**< TGSI_TEXTURE_x values */
72 ubyte sampler_type[PIPE_MAX_SHADER_SAMPLER_VIEWS]; /**< TGSI_RETURN_TYPE_x */
73 ubyte num_stream_output_components[4];
74
75 ubyte input_array_first[PIPE_MAX_SHADER_INPUTS];
76 ubyte input_array_last[PIPE_MAX_SHADER_INPUTS];
77 ubyte output_array_first[PIPE_MAX_SHADER_OUTPUTS];
78 ubyte output_array_last[PIPE_MAX_SHADER_OUTPUTS];
79 unsigned array_max[TGSI_FILE_COUNT]; /**< highest index array per register file */
80
81 uint immediate_count; /**< number of immediates declared */
82 uint num_instructions;
83 uint num_memory_instructions; /**< sampler, buffer, and image instructions */
84
85 uint opcode_count[TGSI_OPCODE_LAST]; /**< opcode histogram */
86
87 /**
88 * If a tessellation control shader reads outputs, this describes which ones.
89 */
90 boolean reads_pervertex_outputs;
91 boolean reads_perpatch_outputs;
92 boolean reads_tessfactor_outputs;
93
94 ubyte colors_read; /**< which color components are read by the FS */
95 ubyte colors_written;
96 boolean reads_position; /**< does fragment shader read position? */
97 boolean reads_z; /**< does fragment shader read depth? */
98 boolean reads_samplemask; /**< does fragment shader read sample mask? */
99 boolean reads_tess_factors; /**< If TES reads TESSINNER or TESSOUTER */
100 boolean writes_z; /**< does fragment shader write Z value? */
101 boolean writes_stencil; /**< does fragment shader write stencil value? */
102 boolean writes_samplemask; /**< does fragment shader write sample mask? */
103 boolean writes_edgeflag; /**< vertex shader outputs edgeflag */
104 boolean uses_kill; /**< KILL or KILL_IF instruction used? */
105 boolean uses_persp_center;
106 boolean uses_persp_centroid;
107 boolean uses_persp_sample;
108 boolean uses_linear_center;
109 boolean uses_linear_centroid;
110 boolean uses_linear_sample;
111 boolean uses_persp_opcode_interp_centroid;
112 boolean uses_persp_opcode_interp_offset;
113 boolean uses_persp_opcode_interp_sample;
114 boolean uses_linear_opcode_interp_centroid;
115 boolean uses_linear_opcode_interp_offset;
116 boolean uses_linear_opcode_interp_sample;
117 boolean uses_instanceid;
118 boolean uses_vertexid;
119 boolean uses_vertexid_nobase;
120 boolean uses_basevertex;
121 boolean uses_primid;
122 boolean uses_frontface;
123 boolean uses_invocationid;
124 boolean uses_thread_id[3];
125 boolean uses_block_id[3];
126 boolean uses_block_size;
127 boolean uses_grid_size;
128 boolean writes_position;
129 boolean writes_psize;
130 boolean writes_clipvertex;
131 boolean writes_primid;
132 boolean writes_viewport_index;
133 boolean writes_layer;
134 boolean writes_memory; /**< contains stores or atomics to buffers or images */
135 boolean is_msaa_sampler[PIPE_MAX_SAMPLERS];
136 boolean uses_doubles; /**< uses any of the double instructions */
137 boolean uses_derivatives;
138 boolean uses_bindless_samplers;
139 boolean uses_bindless_images;
140 unsigned clipdist_writemask;
141 unsigned culldist_writemask;
142 unsigned num_written_culldistance;
143 unsigned num_written_clipdistance;
144
145 unsigned images_declared; /**< bitmask of declared images */
146 /**
147 * Bitmask indicating which declared image is a buffer.
148 */
149 unsigned images_buffers;
150 unsigned images_load; /**< bitmask of images using loads */
151 unsigned images_store; /**< bitmask of images using stores */
152 unsigned images_atomic; /**< bitmask of images using atomics */
153 unsigned shader_buffers_declared; /**< bitmask of declared shader buffers */
154 unsigned shader_buffers_load; /**< bitmask of shader buffers using loads */
155 unsigned shader_buffers_store; /**< bitmask of shader buffers using stores */
156 unsigned shader_buffers_atomic; /**< bitmask of shader buffers using atomics */
157 /**
158 * Bitmask indicating which register files are accessed with
159 * indirect addressing. The bits are (1 << TGSI_FILE_x), etc.
160 */
161 unsigned indirect_files;
162 /**
163 * Bitmask indicating which register files are read / written with
164 * indirect addressing. The bits are (1 << TGSI_FILE_x).
165 */
166 unsigned indirect_files_read;
167 unsigned indirect_files_written;
168 unsigned dim_indirect_files; /**< shader resource indexing */
169 unsigned const_buffers_indirect; /**< const buffers using indirect addressing */
170
171 unsigned properties[TGSI_PROPERTY_COUNT]; /* index with TGSI_PROPERTY_ */
172
173 /**
174 * Max nesting limit of loops/if's
175 */
176 unsigned max_depth;
177 };
178
179 struct tgsi_array_info
180 {
181 /** Whether an array with this ID was declared. */
182 bool declared;
183
184 /** The OR of all writemasks used to write to this array. */
185 ubyte writemask;
186
187 /** The range with which the array was declared. */
188 struct tgsi_declaration_range range;
189 };
190
191 struct tgsi_tessctrl_info
192 {
193 /** Whether all codepaths write tess factors in all invocations. */
194 bool tessfactors_are_def_in_all_invocs;
195 };
196
197 extern void
198 tgsi_scan_shader(const struct tgsi_token *tokens,
199 struct tgsi_shader_info *info);
200
201 void
202 tgsi_scan_arrays(const struct tgsi_token *tokens,
203 unsigned file,
204 unsigned max_array_id,
205 struct tgsi_array_info *arrays);
206
207 void
208 tgsi_scan_tess_ctrl(const struct tgsi_token *tokens,
209 const struct tgsi_shader_info *info,
210 struct tgsi_tessctrl_info *out);
211
212 static inline bool
tgsi_is_bindless_image_file(unsigned file)213 tgsi_is_bindless_image_file(unsigned file)
214 {
215 return file != TGSI_FILE_IMAGE &&
216 file != TGSI_FILE_MEMORY &&
217 file != TGSI_FILE_BUFFER;
218 }
219
220 #ifdef __cplusplus
221 } // extern "C"
222 #endif
223
224 #endif /* TGSI_SCAN_H */
225