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1 /*
2  * Copyright 2019-2021 Hans-Kristian Arntzen
3  * SPDX-License-Identifier: Apache-2.0 OR MIT
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *     http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 /*
19  * At your option, you may choose to accept this material under either:
20  *  1. The Apache License, Version 2.0, found at <http://www.apache.org/licenses/LICENSE-2.0>, or
21  *  2. The MIT License, found at <http://opensource.org/licenses/MIT>.
22  */
23 
24 #ifndef SPIRV_CROSS_C_API_H
25 #define SPIRV_CROSS_C_API_H
26 
27 #include <stddef.h>
28 #include "spirv.h"
29 
30 /*
31  * C89-compatible wrapper for SPIRV-Cross' API.
32  * Documentation here is sparse unless the behavior does not map 1:1 with C++ API.
33  * It is recommended to look at the canonical C++ API for more detailed information.
34  */
35 
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39 
40 /* Bumped if ABI or API breaks backwards compatibility. */
41 #define SPVC_C_API_VERSION_MAJOR 0
42 /* Bumped if APIs or enumerations are added in a backwards compatible way. */
43 #define SPVC_C_API_VERSION_MINOR 48
44 /* Bumped if internal implementation details change. */
45 #define SPVC_C_API_VERSION_PATCH 0
46 
47 #if !defined(SPVC_PUBLIC_API)
48 #if defined(SPVC_EXPORT_SYMBOLS)
49 /* Exports symbols. Standard C calling convention is used. */
50 #if defined(__GNUC__)
51 #define SPVC_PUBLIC_API __attribute__((visibility("default")))
52 #elif defined(_MSC_VER)
53 #define SPVC_PUBLIC_API __declspec(dllexport)
54 #else
55 #define SPVC_PUBLIC_API
56 #endif
57 #else
58 #define SPVC_PUBLIC_API
59 #endif
60 #endif
61 
62 /*
63  * Gets the SPVC_C_API_VERSION_* used to build this library.
64  * Can be used to check for ABI mismatch if so-versioning did not catch it.
65  */
66 SPVC_PUBLIC_API void spvc_get_version(unsigned *major, unsigned *minor, unsigned *patch);
67 
68 /* Gets a human readable version string to identify which commit a particular binary was created from. */
69 SPVC_PUBLIC_API const char *spvc_get_commit_revision_and_timestamp(void);
70 
71 /* These types are opaque to the user. */
72 typedef struct spvc_context_s *spvc_context;
73 typedef struct spvc_parsed_ir_s *spvc_parsed_ir;
74 typedef struct spvc_compiler_s *spvc_compiler;
75 typedef struct spvc_compiler_options_s *spvc_compiler_options;
76 typedef struct spvc_resources_s *spvc_resources;
77 struct spvc_type_s;
78 typedef const struct spvc_type_s *spvc_type;
79 typedef struct spvc_constant_s *spvc_constant;
80 struct spvc_set_s;
81 typedef const struct spvc_set_s *spvc_set;
82 
83 /*
84  * Shallow typedefs. All SPIR-V IDs are plain 32-bit numbers, but this helps communicate which data is used.
85  * Maps to a SPIRType.
86  */
87 typedef SpvId spvc_type_id;
88 /* Maps to a SPIRVariable. */
89 typedef SpvId spvc_variable_id;
90 /* Maps to a SPIRConstant. */
91 typedef SpvId spvc_constant_id;
92 
93 /* See C++ API. */
94 typedef struct spvc_reflected_resource
95 {
96 	spvc_variable_id id;
97 	spvc_type_id base_type_id;
98 	spvc_type_id type_id;
99 	const char *name;
100 } spvc_reflected_resource;
101 
102 typedef struct spvc_reflected_builtin_resource
103 {
104 	SpvBuiltIn builtin;
105 	spvc_type_id value_type_id;
106 	spvc_reflected_resource resource;
107 } spvc_reflected_builtin_resource;
108 
109 /* See C++ API. */
110 typedef struct spvc_entry_point
111 {
112 	SpvExecutionModel execution_model;
113 	const char *name;
114 } spvc_entry_point;
115 
116 /* See C++ API. */
117 typedef struct spvc_combined_image_sampler
118 {
119 	spvc_variable_id combined_id;
120 	spvc_variable_id image_id;
121 	spvc_variable_id sampler_id;
122 } spvc_combined_image_sampler;
123 
124 /* See C++ API. */
125 typedef struct spvc_specialization_constant
126 {
127 	spvc_constant_id id;
128 	unsigned constant_id;
129 } spvc_specialization_constant;
130 
131 /* See C++ API. */
132 typedef struct spvc_buffer_range
133 {
134 	unsigned index;
135 	size_t offset;
136 	size_t range;
137 } spvc_buffer_range;
138 
139 /* See C++ API. */
140 typedef struct spvc_hlsl_root_constants
141 {
142 	unsigned start;
143 	unsigned end;
144 	unsigned binding;
145 	unsigned space;
146 } spvc_hlsl_root_constants;
147 
148 /* See C++ API. */
149 typedef struct spvc_hlsl_vertex_attribute_remap
150 {
151 	unsigned location;
152 	const char *semantic;
153 } spvc_hlsl_vertex_attribute_remap;
154 
155 /*
156  * Be compatible with non-C99 compilers, which do not have stdbool.
157  * Only recent MSVC compilers supports this for example, and ideally SPIRV-Cross should be linkable
158  * from a wide range of compilers in its C wrapper.
159  */
160 typedef unsigned char spvc_bool;
161 #define SPVC_TRUE ((spvc_bool)1)
162 #define SPVC_FALSE ((spvc_bool)0)
163 
164 typedef enum spvc_result
165 {
166 	/* Success. */
167 	SPVC_SUCCESS = 0,
168 
169 	/* The SPIR-V is invalid. Should have been caught by validation ideally. */
170 	SPVC_ERROR_INVALID_SPIRV = -1,
171 
172 	/* The SPIR-V might be valid or invalid, but SPIRV-Cross currently cannot correctly translate this to your target language. */
173 	SPVC_ERROR_UNSUPPORTED_SPIRV = -2,
174 
175 	/* If for some reason we hit this, new or malloc failed. */
176 	SPVC_ERROR_OUT_OF_MEMORY = -3,
177 
178 	/* Invalid API argument. */
179 	SPVC_ERROR_INVALID_ARGUMENT = -4,
180 
181 	SPVC_ERROR_INT_MAX = 0x7fffffff
182 } spvc_result;
183 
184 typedef enum spvc_capture_mode
185 {
186 	/* The Parsed IR payload will be copied, and the handle can be reused to create other compiler instances. */
187 	SPVC_CAPTURE_MODE_COPY = 0,
188 
189 	/*
190 	 * The payload will now be owned by the compiler.
191 	 * parsed_ir should now be considered a dead blob and must not be used further.
192 	 * This is optimal for performance and should be the go-to option.
193 	 */
194 	SPVC_CAPTURE_MODE_TAKE_OWNERSHIP = 1,
195 
196 	SPVC_CAPTURE_MODE_INT_MAX = 0x7fffffff
197 } spvc_capture_mode;
198 
199 typedef enum spvc_backend
200 {
201 	/* This backend can only perform reflection, no compiler options are supported. Maps to spirv_cross::Compiler. */
202 	SPVC_BACKEND_NONE = 0,
203 	SPVC_BACKEND_GLSL = 1, /* spirv_cross::CompilerGLSL */
204 	SPVC_BACKEND_HLSL = 2, /* CompilerHLSL */
205 	SPVC_BACKEND_MSL = 3, /* CompilerMSL */
206 	SPVC_BACKEND_CPP = 4, /* CompilerCPP */
207 	SPVC_BACKEND_JSON = 5, /* CompilerReflection w/ JSON backend */
208 	SPVC_BACKEND_INT_MAX = 0x7fffffff
209 } spvc_backend;
210 
211 /* Maps to C++ API. */
212 typedef enum spvc_resource_type
213 {
214 	SPVC_RESOURCE_TYPE_UNKNOWN = 0,
215 	SPVC_RESOURCE_TYPE_UNIFORM_BUFFER = 1,
216 	SPVC_RESOURCE_TYPE_STORAGE_BUFFER = 2,
217 	SPVC_RESOURCE_TYPE_STAGE_INPUT = 3,
218 	SPVC_RESOURCE_TYPE_STAGE_OUTPUT = 4,
219 	SPVC_RESOURCE_TYPE_SUBPASS_INPUT = 5,
220 	SPVC_RESOURCE_TYPE_STORAGE_IMAGE = 6,
221 	SPVC_RESOURCE_TYPE_SAMPLED_IMAGE = 7,
222 	SPVC_RESOURCE_TYPE_ATOMIC_COUNTER = 8,
223 	SPVC_RESOURCE_TYPE_PUSH_CONSTANT = 9,
224 	SPVC_RESOURCE_TYPE_SEPARATE_IMAGE = 10,
225 	SPVC_RESOURCE_TYPE_SEPARATE_SAMPLERS = 11,
226 	SPVC_RESOURCE_TYPE_ACCELERATION_STRUCTURE = 12,
227 	SPVC_RESOURCE_TYPE_RAY_QUERY = 13,
228 	SPVC_RESOURCE_TYPE_INT_MAX = 0x7fffffff
229 } spvc_resource_type;
230 
231 typedef enum spvc_builtin_resource_type
232 {
233 	SPVC_BUILTIN_RESOURCE_TYPE_UNKNOWN = 0,
234 	SPVC_BUILTIN_RESOURCE_TYPE_STAGE_INPUT = 1,
235 	SPVC_BUILTIN_RESOURCE_TYPE_STAGE_OUTPUT = 2,
236 	SPVC_BUILTIN_RESOURCE_TYPE_INT_MAX = 0x7fffffff
237 } spvc_builtin_resource_type;
238 
239 /* Maps to spirv_cross::SPIRType::BaseType. */
240 typedef enum spvc_basetype
241 {
242 	SPVC_BASETYPE_UNKNOWN = 0,
243 	SPVC_BASETYPE_VOID = 1,
244 	SPVC_BASETYPE_BOOLEAN = 2,
245 	SPVC_BASETYPE_INT8 = 3,
246 	SPVC_BASETYPE_UINT8 = 4,
247 	SPVC_BASETYPE_INT16 = 5,
248 	SPVC_BASETYPE_UINT16 = 6,
249 	SPVC_BASETYPE_INT32 = 7,
250 	SPVC_BASETYPE_UINT32 = 8,
251 	SPVC_BASETYPE_INT64 = 9,
252 	SPVC_BASETYPE_UINT64 = 10,
253 	SPVC_BASETYPE_ATOMIC_COUNTER = 11,
254 	SPVC_BASETYPE_FP16 = 12,
255 	SPVC_BASETYPE_FP32 = 13,
256 	SPVC_BASETYPE_FP64 = 14,
257 	SPVC_BASETYPE_STRUCT = 15,
258 	SPVC_BASETYPE_IMAGE = 16,
259 	SPVC_BASETYPE_SAMPLED_IMAGE = 17,
260 	SPVC_BASETYPE_SAMPLER = 18,
261 	SPVC_BASETYPE_ACCELERATION_STRUCTURE = 19,
262 
263 	SPVC_BASETYPE_INT_MAX = 0x7fffffff
264 } spvc_basetype;
265 
266 #define SPVC_COMPILER_OPTION_COMMON_BIT 0x1000000
267 #define SPVC_COMPILER_OPTION_GLSL_BIT 0x2000000
268 #define SPVC_COMPILER_OPTION_HLSL_BIT 0x4000000
269 #define SPVC_COMPILER_OPTION_MSL_BIT 0x8000000
270 #define SPVC_COMPILER_OPTION_LANG_BITS 0x0f000000
271 #define SPVC_COMPILER_OPTION_ENUM_BITS 0xffffff
272 
273 #define SPVC_MAKE_MSL_VERSION(major, minor, patch) ((major) * 10000 + (minor) * 100 + (patch))
274 
275 /* Maps to C++ API. */
276 typedef enum spvc_msl_platform
277 {
278 	SPVC_MSL_PLATFORM_IOS = 0,
279 	SPVC_MSL_PLATFORM_MACOS = 1,
280 	SPVC_MSL_PLATFORM_MAX_INT = 0x7fffffff
281 } spvc_msl_platform;
282 
283 /* Maps to C++ API. */
284 typedef enum spvc_msl_index_type
285 {
286 	SPVC_MSL_INDEX_TYPE_NONE = 0,
287 	SPVC_MSL_INDEX_TYPE_UINT16 = 1,
288 	SPVC_MSL_INDEX_TYPE_UINT32 = 2,
289 	SPVC_MSL_INDEX_TYPE_MAX_INT = 0x7fffffff
290 } spvc_msl_index_type;
291 
292 /* Maps to C++ API. */
293 typedef enum spvc_msl_shader_input_format
294 {
295 	SPVC_MSL_SHADER_INPUT_FORMAT_OTHER = 0,
296 	SPVC_MSL_SHADER_INPUT_FORMAT_UINT8 = 1,
297 	SPVC_MSL_SHADER_INPUT_FORMAT_UINT16 = 2,
298 	SPVC_MSL_SHADER_INPUT_FORMAT_ANY16 = 3,
299 	SPVC_MSL_SHADER_INPUT_FORMAT_ANY32 = 4,
300 
301 	/* Deprecated names. */
302 	SPVC_MSL_VERTEX_FORMAT_OTHER = SPVC_MSL_SHADER_INPUT_FORMAT_OTHER,
303 	SPVC_MSL_VERTEX_FORMAT_UINT8 = SPVC_MSL_SHADER_INPUT_FORMAT_UINT8,
304 	SPVC_MSL_VERTEX_FORMAT_UINT16 = SPVC_MSL_SHADER_INPUT_FORMAT_UINT16,
305 
306 	SPVC_MSL_SHADER_INPUT_FORMAT_INT_MAX = 0x7fffffff
307 } spvc_msl_shader_input_format, spvc_msl_vertex_format;
308 
309 /* Maps to C++ API. Deprecated; use spvc_msl_shader_input. */
310 typedef struct spvc_msl_vertex_attribute
311 {
312 	unsigned location;
313 
314 	/* Obsolete, do not use. Only lingers on for ABI compatibility. */
315 	unsigned msl_buffer;
316 	/* Obsolete, do not use. Only lingers on for ABI compatibility. */
317 	unsigned msl_offset;
318 	/* Obsolete, do not use. Only lingers on for ABI compatibility. */
319 	unsigned msl_stride;
320 	/* Obsolete, do not use. Only lingers on for ABI compatibility. */
321 	spvc_bool per_instance;
322 
323 	spvc_msl_vertex_format format;
324 	SpvBuiltIn builtin;
325 } spvc_msl_vertex_attribute;
326 
327 /*
328  * Initializes the vertex attribute struct.
329  */
330 SPVC_PUBLIC_API void spvc_msl_vertex_attribute_init(spvc_msl_vertex_attribute *attr);
331 
332 /* Maps to C++ API. */
333 typedef struct spvc_msl_shader_input
334 {
335 	unsigned location;
336 	spvc_msl_vertex_format format;
337 	SpvBuiltIn builtin;
338 	unsigned vecsize;
339 } spvc_msl_shader_input;
340 
341 /*
342  * Initializes the shader input struct.
343  */
344 SPVC_PUBLIC_API void spvc_msl_shader_input_init(spvc_msl_shader_input *input);
345 
346 /* Maps to C++ API. */
347 typedef struct spvc_msl_resource_binding
348 {
349 	SpvExecutionModel stage;
350 	unsigned desc_set;
351 	unsigned binding;
352 	unsigned msl_buffer;
353 	unsigned msl_texture;
354 	unsigned msl_sampler;
355 } spvc_msl_resource_binding;
356 
357 /*
358  * Initializes the resource binding struct.
359  * The defaults are non-zero.
360  */
361 SPVC_PUBLIC_API void spvc_msl_resource_binding_init(spvc_msl_resource_binding *binding);
362 
363 #define SPVC_MSL_PUSH_CONSTANT_DESC_SET (~(0u))
364 #define SPVC_MSL_PUSH_CONSTANT_BINDING (0)
365 #define SPVC_MSL_SWIZZLE_BUFFER_BINDING (~(1u))
366 #define SPVC_MSL_BUFFER_SIZE_BUFFER_BINDING (~(2u))
367 #define SPVC_MSL_ARGUMENT_BUFFER_BINDING (~(3u))
368 
369 /* Obsolete. Sticks around for backwards compatibility. */
370 #define SPVC_MSL_AUX_BUFFER_STRUCT_VERSION 1
371 
372 /* Runtime check for incompatibility. Obsolete. */
373 SPVC_PUBLIC_API unsigned spvc_msl_get_aux_buffer_struct_version(void);
374 
375 /* Maps to C++ API. */
376 typedef enum spvc_msl_sampler_coord
377 {
378 	SPVC_MSL_SAMPLER_COORD_NORMALIZED = 0,
379 	SPVC_MSL_SAMPLER_COORD_PIXEL = 1,
380 	SPVC_MSL_SAMPLER_INT_MAX = 0x7fffffff
381 } spvc_msl_sampler_coord;
382 
383 /* Maps to C++ API. */
384 typedef enum spvc_msl_sampler_filter
385 {
386 	SPVC_MSL_SAMPLER_FILTER_NEAREST = 0,
387 	SPVC_MSL_SAMPLER_FILTER_LINEAR = 1,
388 	SPVC_MSL_SAMPLER_FILTER_INT_MAX = 0x7fffffff
389 } spvc_msl_sampler_filter;
390 
391 /* Maps to C++ API. */
392 typedef enum spvc_msl_sampler_mip_filter
393 {
394 	SPVC_MSL_SAMPLER_MIP_FILTER_NONE = 0,
395 	SPVC_MSL_SAMPLER_MIP_FILTER_NEAREST = 1,
396 	SPVC_MSL_SAMPLER_MIP_FILTER_LINEAR = 2,
397 	SPVC_MSL_SAMPLER_MIP_FILTER_INT_MAX = 0x7fffffff
398 } spvc_msl_sampler_mip_filter;
399 
400 /* Maps to C++ API. */
401 typedef enum spvc_msl_sampler_address
402 {
403 	SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_ZERO = 0,
404 	SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_EDGE = 1,
405 	SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_BORDER = 2,
406 	SPVC_MSL_SAMPLER_ADDRESS_REPEAT = 3,
407 	SPVC_MSL_SAMPLER_ADDRESS_MIRRORED_REPEAT = 4,
408 	SPVC_MSL_SAMPLER_ADDRESS_INT_MAX = 0x7fffffff
409 } spvc_msl_sampler_address;
410 
411 /* Maps to C++ API. */
412 typedef enum spvc_msl_sampler_compare_func
413 {
414 	SPVC_MSL_SAMPLER_COMPARE_FUNC_NEVER = 0,
415 	SPVC_MSL_SAMPLER_COMPARE_FUNC_LESS = 1,
416 	SPVC_MSL_SAMPLER_COMPARE_FUNC_LESS_EQUAL = 2,
417 	SPVC_MSL_SAMPLER_COMPARE_FUNC_GREATER = 3,
418 	SPVC_MSL_SAMPLER_COMPARE_FUNC_GREATER_EQUAL = 4,
419 	SPVC_MSL_SAMPLER_COMPARE_FUNC_EQUAL = 5,
420 	SPVC_MSL_SAMPLER_COMPARE_FUNC_NOT_EQUAL = 6,
421 	SPVC_MSL_SAMPLER_COMPARE_FUNC_ALWAYS = 7,
422 	SPVC_MSL_SAMPLER_COMPARE_FUNC_INT_MAX = 0x7fffffff
423 } spvc_msl_sampler_compare_func;
424 
425 /* Maps to C++ API. */
426 typedef enum spvc_msl_sampler_border_color
427 {
428 	SPVC_MSL_SAMPLER_BORDER_COLOR_TRANSPARENT_BLACK = 0,
429 	SPVC_MSL_SAMPLER_BORDER_COLOR_OPAQUE_BLACK = 1,
430 	SPVC_MSL_SAMPLER_BORDER_COLOR_OPAQUE_WHITE = 2,
431 	SPVC_MSL_SAMPLER_BORDER_COLOR_INT_MAX = 0x7fffffff
432 } spvc_msl_sampler_border_color;
433 
434 /* Maps to C++ API. */
435 typedef enum spvc_msl_format_resolution
436 {
437 	SPVC_MSL_FORMAT_RESOLUTION_444 = 0,
438 	SPVC_MSL_FORMAT_RESOLUTION_422,
439 	SPVC_MSL_FORMAT_RESOLUTION_420,
440 	SPVC_MSL_FORMAT_RESOLUTION_INT_MAX = 0x7fffffff
441 } spvc_msl_format_resolution;
442 
443 /* Maps to C++ API. */
444 typedef enum spvc_msl_chroma_location
445 {
446 	SPVC_MSL_CHROMA_LOCATION_COSITED_EVEN = 0,
447 	SPVC_MSL_CHROMA_LOCATION_MIDPOINT,
448 	SPVC_MSL_CHROMA_LOCATION_INT_MAX = 0x7fffffff
449 } spvc_msl_chroma_location;
450 
451 /* Maps to C++ API. */
452 typedef enum spvc_msl_component_swizzle
453 {
454 	SPVC_MSL_COMPONENT_SWIZZLE_IDENTITY = 0,
455 	SPVC_MSL_COMPONENT_SWIZZLE_ZERO,
456 	SPVC_MSL_COMPONENT_SWIZZLE_ONE,
457 	SPVC_MSL_COMPONENT_SWIZZLE_R,
458 	SPVC_MSL_COMPONENT_SWIZZLE_G,
459 	SPVC_MSL_COMPONENT_SWIZZLE_B,
460 	SPVC_MSL_COMPONENT_SWIZZLE_A,
461 	SPVC_MSL_COMPONENT_SWIZZLE_INT_MAX = 0x7fffffff
462 } spvc_msl_component_swizzle;
463 
464 /* Maps to C++ API. */
465 typedef enum spvc_msl_sampler_ycbcr_model_conversion
466 {
467 	SPVC_MSL_SAMPLER_YCBCR_MODEL_CONVERSION_RGB_IDENTITY = 0,
468 	SPVC_MSL_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_IDENTITY,
469 	SPVC_MSL_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_BT_709,
470 	SPVC_MSL_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_BT_601,
471 	SPVC_MSL_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_BT_2020,
472 	SPVC_MSL_SAMPLER_YCBCR_MODEL_CONVERSION_INT_MAX = 0x7fffffff
473 } spvc_msl_sampler_ycbcr_model_conversion;
474 
475 /* Maps to C+ API. */
476 typedef enum spvc_msl_sampler_ycbcr_range
477 {
478 	SPVC_MSL_SAMPLER_YCBCR_RANGE_ITU_FULL = 0,
479 	SPVC_MSL_SAMPLER_YCBCR_RANGE_ITU_NARROW,
480 	SPVC_MSL_SAMPLER_YCBCR_RANGE_INT_MAX = 0x7fffffff
481 } spvc_msl_sampler_ycbcr_range;
482 
483 /* Maps to C++ API. */
484 typedef struct spvc_msl_constexpr_sampler
485 {
486 	spvc_msl_sampler_coord coord;
487 	spvc_msl_sampler_filter min_filter;
488 	spvc_msl_sampler_filter mag_filter;
489 	spvc_msl_sampler_mip_filter mip_filter;
490 	spvc_msl_sampler_address s_address;
491 	spvc_msl_sampler_address t_address;
492 	spvc_msl_sampler_address r_address;
493 	spvc_msl_sampler_compare_func compare_func;
494 	spvc_msl_sampler_border_color border_color;
495 	float lod_clamp_min;
496 	float lod_clamp_max;
497 	int max_anisotropy;
498 
499 	spvc_bool compare_enable;
500 	spvc_bool lod_clamp_enable;
501 	spvc_bool anisotropy_enable;
502 } spvc_msl_constexpr_sampler;
503 
504 /*
505  * Initializes the constexpr sampler struct.
506  * The defaults are non-zero.
507  */
508 SPVC_PUBLIC_API void spvc_msl_constexpr_sampler_init(spvc_msl_constexpr_sampler *sampler);
509 
510 /* Maps to the sampler Y'CbCr conversion-related portions of MSLConstexprSampler. See C++ API for defaults and details. */
511 typedef struct spvc_msl_sampler_ycbcr_conversion
512 {
513 	unsigned planes;
514 	spvc_msl_format_resolution resolution;
515 	spvc_msl_sampler_filter chroma_filter;
516 	spvc_msl_chroma_location x_chroma_offset;
517 	spvc_msl_chroma_location y_chroma_offset;
518 	spvc_msl_component_swizzle swizzle[4];
519 	spvc_msl_sampler_ycbcr_model_conversion ycbcr_model;
520 	spvc_msl_sampler_ycbcr_range ycbcr_range;
521 	unsigned bpc;
522 } spvc_msl_sampler_ycbcr_conversion;
523 
524 /*
525  * Initializes the constexpr sampler struct.
526  * The defaults are non-zero.
527  */
528 SPVC_PUBLIC_API void spvc_msl_sampler_ycbcr_conversion_init(spvc_msl_sampler_ycbcr_conversion *conv);
529 
530 /* Maps to C++ API. */
531 typedef enum spvc_hlsl_binding_flag_bits
532 {
533 	SPVC_HLSL_BINDING_AUTO_NONE_BIT = 0,
534 	SPVC_HLSL_BINDING_AUTO_PUSH_CONSTANT_BIT = 1 << 0,
535 	SPVC_HLSL_BINDING_AUTO_CBV_BIT = 1 << 1,
536 	SPVC_HLSL_BINDING_AUTO_SRV_BIT = 1 << 2,
537 	SPVC_HLSL_BINDING_AUTO_UAV_BIT = 1 << 3,
538 	SPVC_HLSL_BINDING_AUTO_SAMPLER_BIT = 1 << 4,
539 	SPVC_HLSL_BINDING_AUTO_ALL = 0x7fffffff
540 } spvc_hlsl_binding_flag_bits;
541 typedef unsigned spvc_hlsl_binding_flags;
542 
543 #define SPVC_HLSL_PUSH_CONSTANT_DESC_SET (~(0u))
544 #define SPVC_HLSL_PUSH_CONSTANT_BINDING (0)
545 
546 /* Maps to C++ API. */
547 typedef struct spvc_hlsl_resource_binding_mapping
548 {
549 	unsigned register_space;
550 	unsigned register_binding;
551 } spvc_hlsl_resource_binding_mapping;
552 
553 typedef struct spvc_hlsl_resource_binding
554 {
555 	SpvExecutionModel stage;
556 	unsigned desc_set;
557 	unsigned binding;
558 
559 	spvc_hlsl_resource_binding_mapping cbv, uav, srv, sampler;
560 } spvc_hlsl_resource_binding;
561 
562 /*
563  * Initializes the resource binding struct.
564  * The defaults are non-zero.
565  */
566 SPVC_PUBLIC_API void spvc_hlsl_resource_binding_init(spvc_hlsl_resource_binding *binding);
567 
568 /* Maps to the various spirv_cross::Compiler*::Option structures. See C++ API for defaults and details. */
569 typedef enum spvc_compiler_option
570 {
571 	SPVC_COMPILER_OPTION_UNKNOWN = 0,
572 
573 	SPVC_COMPILER_OPTION_FORCE_TEMPORARY = 1 | SPVC_COMPILER_OPTION_COMMON_BIT,
574 	SPVC_COMPILER_OPTION_FLATTEN_MULTIDIMENSIONAL_ARRAYS = 2 | SPVC_COMPILER_OPTION_COMMON_BIT,
575 	SPVC_COMPILER_OPTION_FIXUP_DEPTH_CONVENTION = 3 | SPVC_COMPILER_OPTION_COMMON_BIT,
576 	SPVC_COMPILER_OPTION_FLIP_VERTEX_Y = 4 | SPVC_COMPILER_OPTION_COMMON_BIT,
577 
578 	SPVC_COMPILER_OPTION_GLSL_SUPPORT_NONZERO_BASE_INSTANCE = 5 | SPVC_COMPILER_OPTION_GLSL_BIT,
579 	SPVC_COMPILER_OPTION_GLSL_SEPARATE_SHADER_OBJECTS = 6 | SPVC_COMPILER_OPTION_GLSL_BIT,
580 	SPVC_COMPILER_OPTION_GLSL_ENABLE_420PACK_EXTENSION = 7 | SPVC_COMPILER_OPTION_GLSL_BIT,
581 	SPVC_COMPILER_OPTION_GLSL_VERSION = 8 | SPVC_COMPILER_OPTION_GLSL_BIT,
582 	SPVC_COMPILER_OPTION_GLSL_ES = 9 | SPVC_COMPILER_OPTION_GLSL_BIT,
583 	SPVC_COMPILER_OPTION_GLSL_VULKAN_SEMANTICS = 10 | SPVC_COMPILER_OPTION_GLSL_BIT,
584 	SPVC_COMPILER_OPTION_GLSL_ES_DEFAULT_FLOAT_PRECISION_HIGHP = 11 | SPVC_COMPILER_OPTION_GLSL_BIT,
585 	SPVC_COMPILER_OPTION_GLSL_ES_DEFAULT_INT_PRECISION_HIGHP = 12 | SPVC_COMPILER_OPTION_GLSL_BIT,
586 
587 	SPVC_COMPILER_OPTION_HLSL_SHADER_MODEL = 13 | SPVC_COMPILER_OPTION_HLSL_BIT,
588 	SPVC_COMPILER_OPTION_HLSL_POINT_SIZE_COMPAT = 14 | SPVC_COMPILER_OPTION_HLSL_BIT,
589 	SPVC_COMPILER_OPTION_HLSL_POINT_COORD_COMPAT = 15 | SPVC_COMPILER_OPTION_HLSL_BIT,
590 	SPVC_COMPILER_OPTION_HLSL_SUPPORT_NONZERO_BASE_VERTEX_BASE_INSTANCE = 16 | SPVC_COMPILER_OPTION_HLSL_BIT,
591 
592 	SPVC_COMPILER_OPTION_MSL_VERSION = 17 | SPVC_COMPILER_OPTION_MSL_BIT,
593 	SPVC_COMPILER_OPTION_MSL_TEXEL_BUFFER_TEXTURE_WIDTH = 18 | SPVC_COMPILER_OPTION_MSL_BIT,
594 
595 	/* Obsolete, use SWIZZLE_BUFFER_INDEX instead. */
596 	SPVC_COMPILER_OPTION_MSL_AUX_BUFFER_INDEX = 19 | SPVC_COMPILER_OPTION_MSL_BIT,
597 	SPVC_COMPILER_OPTION_MSL_SWIZZLE_BUFFER_INDEX = 19 | SPVC_COMPILER_OPTION_MSL_BIT,
598 
599 	SPVC_COMPILER_OPTION_MSL_INDIRECT_PARAMS_BUFFER_INDEX = 20 | SPVC_COMPILER_OPTION_MSL_BIT,
600 	SPVC_COMPILER_OPTION_MSL_SHADER_OUTPUT_BUFFER_INDEX = 21 | SPVC_COMPILER_OPTION_MSL_BIT,
601 	SPVC_COMPILER_OPTION_MSL_SHADER_PATCH_OUTPUT_BUFFER_INDEX = 22 | SPVC_COMPILER_OPTION_MSL_BIT,
602 	SPVC_COMPILER_OPTION_MSL_SHADER_TESS_FACTOR_OUTPUT_BUFFER_INDEX = 23 | SPVC_COMPILER_OPTION_MSL_BIT,
603 	SPVC_COMPILER_OPTION_MSL_SHADER_INPUT_WORKGROUP_INDEX = 24 | SPVC_COMPILER_OPTION_MSL_BIT,
604 	SPVC_COMPILER_OPTION_MSL_ENABLE_POINT_SIZE_BUILTIN = 25 | SPVC_COMPILER_OPTION_MSL_BIT,
605 	SPVC_COMPILER_OPTION_MSL_DISABLE_RASTERIZATION = 26 | SPVC_COMPILER_OPTION_MSL_BIT,
606 	SPVC_COMPILER_OPTION_MSL_CAPTURE_OUTPUT_TO_BUFFER = 27 | SPVC_COMPILER_OPTION_MSL_BIT,
607 	SPVC_COMPILER_OPTION_MSL_SWIZZLE_TEXTURE_SAMPLES = 28 | SPVC_COMPILER_OPTION_MSL_BIT,
608 	SPVC_COMPILER_OPTION_MSL_PAD_FRAGMENT_OUTPUT_COMPONENTS = 29 | SPVC_COMPILER_OPTION_MSL_BIT,
609 	SPVC_COMPILER_OPTION_MSL_TESS_DOMAIN_ORIGIN_LOWER_LEFT = 30 | SPVC_COMPILER_OPTION_MSL_BIT,
610 	SPVC_COMPILER_OPTION_MSL_PLATFORM = 31 | SPVC_COMPILER_OPTION_MSL_BIT,
611 	SPVC_COMPILER_OPTION_MSL_ARGUMENT_BUFFERS = 32 | SPVC_COMPILER_OPTION_MSL_BIT,
612 
613 	SPVC_COMPILER_OPTION_GLSL_EMIT_PUSH_CONSTANT_AS_UNIFORM_BUFFER = 33 | SPVC_COMPILER_OPTION_GLSL_BIT,
614 
615 	SPVC_COMPILER_OPTION_MSL_TEXTURE_BUFFER_NATIVE = 34 | SPVC_COMPILER_OPTION_MSL_BIT,
616 
617 	SPVC_COMPILER_OPTION_GLSL_EMIT_UNIFORM_BUFFER_AS_PLAIN_UNIFORMS = 35 | SPVC_COMPILER_OPTION_GLSL_BIT,
618 
619 	SPVC_COMPILER_OPTION_MSL_BUFFER_SIZE_BUFFER_INDEX = 36 | SPVC_COMPILER_OPTION_MSL_BIT,
620 
621 	SPVC_COMPILER_OPTION_EMIT_LINE_DIRECTIVES = 37 | SPVC_COMPILER_OPTION_COMMON_BIT,
622 
623 	SPVC_COMPILER_OPTION_MSL_MULTIVIEW = 38 | SPVC_COMPILER_OPTION_MSL_BIT,
624 	SPVC_COMPILER_OPTION_MSL_VIEW_MASK_BUFFER_INDEX = 39 | SPVC_COMPILER_OPTION_MSL_BIT,
625 	SPVC_COMPILER_OPTION_MSL_DEVICE_INDEX = 40 | SPVC_COMPILER_OPTION_MSL_BIT,
626 	SPVC_COMPILER_OPTION_MSL_VIEW_INDEX_FROM_DEVICE_INDEX = 41 | SPVC_COMPILER_OPTION_MSL_BIT,
627 	SPVC_COMPILER_OPTION_MSL_DISPATCH_BASE = 42 | SPVC_COMPILER_OPTION_MSL_BIT,
628 	SPVC_COMPILER_OPTION_MSL_DYNAMIC_OFFSETS_BUFFER_INDEX = 43 | SPVC_COMPILER_OPTION_MSL_BIT,
629 	SPVC_COMPILER_OPTION_MSL_TEXTURE_1D_AS_2D = 44 | SPVC_COMPILER_OPTION_MSL_BIT,
630 	SPVC_COMPILER_OPTION_MSL_ENABLE_BASE_INDEX_ZERO = 45 | SPVC_COMPILER_OPTION_MSL_BIT,
631 
632 	/* Obsolete. Use MSL_FRAMEBUFFER_FETCH_SUBPASS instead. */
633 	SPVC_COMPILER_OPTION_MSL_IOS_FRAMEBUFFER_FETCH_SUBPASS = 46 | SPVC_COMPILER_OPTION_MSL_BIT,
634 	SPVC_COMPILER_OPTION_MSL_FRAMEBUFFER_FETCH_SUBPASS = 46 | SPVC_COMPILER_OPTION_MSL_BIT,
635 
636 	SPVC_COMPILER_OPTION_MSL_INVARIANT_FP_MATH = 47 | SPVC_COMPILER_OPTION_MSL_BIT,
637 	SPVC_COMPILER_OPTION_MSL_EMULATE_CUBEMAP_ARRAY = 48 | SPVC_COMPILER_OPTION_MSL_BIT,
638 	SPVC_COMPILER_OPTION_MSL_ENABLE_DECORATION_BINDING = 49 | SPVC_COMPILER_OPTION_MSL_BIT,
639 	SPVC_COMPILER_OPTION_MSL_FORCE_ACTIVE_ARGUMENT_BUFFER_RESOURCES = 50 | SPVC_COMPILER_OPTION_MSL_BIT,
640 	SPVC_COMPILER_OPTION_MSL_FORCE_NATIVE_ARRAYS = 51 | SPVC_COMPILER_OPTION_MSL_BIT,
641 
642 	SPVC_COMPILER_OPTION_ENABLE_STORAGE_IMAGE_QUALIFIER_DEDUCTION = 52 | SPVC_COMPILER_OPTION_COMMON_BIT,
643 
644 	SPVC_COMPILER_OPTION_HLSL_FORCE_STORAGE_BUFFER_AS_UAV = 53 | SPVC_COMPILER_OPTION_HLSL_BIT,
645 
646 	SPVC_COMPILER_OPTION_FORCE_ZERO_INITIALIZED_VARIABLES = 54 | SPVC_COMPILER_OPTION_COMMON_BIT,
647 
648 	SPVC_COMPILER_OPTION_HLSL_NONWRITABLE_UAV_TEXTURE_AS_SRV = 55 | SPVC_COMPILER_OPTION_HLSL_BIT,
649 
650 	SPVC_COMPILER_OPTION_MSL_ENABLE_FRAG_OUTPUT_MASK = 56 | SPVC_COMPILER_OPTION_MSL_BIT,
651 	SPVC_COMPILER_OPTION_MSL_ENABLE_FRAG_DEPTH_BUILTIN = 57 | SPVC_COMPILER_OPTION_MSL_BIT,
652 	SPVC_COMPILER_OPTION_MSL_ENABLE_FRAG_STENCIL_REF_BUILTIN = 58 | SPVC_COMPILER_OPTION_MSL_BIT,
653 	SPVC_COMPILER_OPTION_MSL_ENABLE_CLIP_DISTANCE_USER_VARYING = 59 | SPVC_COMPILER_OPTION_MSL_BIT,
654 
655 	SPVC_COMPILER_OPTION_HLSL_ENABLE_16BIT_TYPES = 60 | SPVC_COMPILER_OPTION_HLSL_BIT,
656 
657 	SPVC_COMPILER_OPTION_MSL_MULTI_PATCH_WORKGROUP = 61 | SPVC_COMPILER_OPTION_MSL_BIT,
658 	SPVC_COMPILER_OPTION_MSL_SHADER_INPUT_BUFFER_INDEX = 62 | SPVC_COMPILER_OPTION_MSL_BIT,
659 	SPVC_COMPILER_OPTION_MSL_SHADER_INDEX_BUFFER_INDEX = 63 | SPVC_COMPILER_OPTION_MSL_BIT,
660 	SPVC_COMPILER_OPTION_MSL_VERTEX_FOR_TESSELLATION = 64 | SPVC_COMPILER_OPTION_MSL_BIT,
661 	SPVC_COMPILER_OPTION_MSL_VERTEX_INDEX_TYPE = 65 | SPVC_COMPILER_OPTION_MSL_BIT,
662 
663 	SPVC_COMPILER_OPTION_GLSL_FORCE_FLATTENED_IO_BLOCKS = 66 | SPVC_COMPILER_OPTION_GLSL_BIT,
664 
665 	SPVC_COMPILER_OPTION_MSL_MULTIVIEW_LAYERED_RENDERING = 67 | SPVC_COMPILER_OPTION_MSL_BIT,
666 	SPVC_COMPILER_OPTION_MSL_ARRAYED_SUBPASS_INPUT = 68 | SPVC_COMPILER_OPTION_MSL_BIT,
667 	SPVC_COMPILER_OPTION_MSL_R32UI_LINEAR_TEXTURE_ALIGNMENT = 69 | SPVC_COMPILER_OPTION_MSL_BIT,
668 	SPVC_COMPILER_OPTION_MSL_R32UI_ALIGNMENT_CONSTANT_ID = 70 | SPVC_COMPILER_OPTION_MSL_BIT,
669 
670 	SPVC_COMPILER_OPTION_HLSL_FLATTEN_MATRIX_VERTEX_INPUT_SEMANTICS = 71 | SPVC_COMPILER_OPTION_HLSL_BIT,
671 
672 	SPVC_COMPILER_OPTION_MSL_IOS_USE_SIMDGROUP_FUNCTIONS = 72 | SPVC_COMPILER_OPTION_MSL_BIT,
673 	SPVC_COMPILER_OPTION_MSL_EMULATE_SUBGROUPS = 73 | SPVC_COMPILER_OPTION_MSL_BIT,
674 	SPVC_COMPILER_OPTION_MSL_FIXED_SUBGROUP_SIZE = 74 | SPVC_COMPILER_OPTION_MSL_BIT,
675 	SPVC_COMPILER_OPTION_MSL_FORCE_SAMPLE_RATE_SHADING = 75 | SPVC_COMPILER_OPTION_MSL_BIT,
676 	SPVC_COMPILER_OPTION_MSL_IOS_SUPPORT_BASE_VERTEX_INSTANCE = 76 | SPVC_COMPILER_OPTION_MSL_BIT,
677 
678 	SPVC_COMPILER_OPTION_GLSL_OVR_MULTIVIEW_VIEW_COUNT = 77 | SPVC_COMPILER_OPTION_GLSL_BIT,
679 
680 	SPVC_COMPILER_OPTION_INT_MAX = 0x7fffffff
681 } spvc_compiler_option;
682 
683 /*
684  * Context is the highest-level API construct.
685  * The context owns all memory allocations made by its child object hierarchy, including various non-opaque structs and strings.
686  * This means that the API user only has to care about one "destroy" call ever when using the C API.
687  * All pointers handed out by the APIs are only valid as long as the context
688  * is alive and spvc_context_release_allocations has not been called.
689  */
690 SPVC_PUBLIC_API spvc_result spvc_context_create(spvc_context *context);
691 
692 /* Frees all memory allocations and objects associated with the context and its child objects. */
693 SPVC_PUBLIC_API void spvc_context_destroy(spvc_context context);
694 
695 /* Frees all memory allocations and objects associated with the context and its child objects, but keeps the context alive. */
696 SPVC_PUBLIC_API void spvc_context_release_allocations(spvc_context context);
697 
698 /* Get the string for the last error which was logged. */
699 SPVC_PUBLIC_API const char *spvc_context_get_last_error_string(spvc_context context);
700 
701 /* Get notified in a callback when an error triggers. Useful for debugging. */
702 typedef void (*spvc_error_callback)(void *userdata, const char *error);
703 SPVC_PUBLIC_API void spvc_context_set_error_callback(spvc_context context, spvc_error_callback cb, void *userdata);
704 
705 /* SPIR-V parsing interface. Maps to Parser which then creates a ParsedIR, and that IR is extracted into the handle. */
706 SPVC_PUBLIC_API spvc_result spvc_context_parse_spirv(spvc_context context, const SpvId *spirv, size_t word_count,
707                                                      spvc_parsed_ir *parsed_ir);
708 
709 /*
710  * Create a compiler backend. Capture mode controls if we construct by copy or move semantics.
711  * It is always recommended to use SPVC_CAPTURE_MODE_TAKE_OWNERSHIP if you only intend to cross-compile the IR once.
712  */
713 SPVC_PUBLIC_API spvc_result spvc_context_create_compiler(spvc_context context, spvc_backend backend,
714                                                          spvc_parsed_ir parsed_ir, spvc_capture_mode mode,
715                                                          spvc_compiler *compiler);
716 
717 /* Maps directly to C++ API. */
718 SPVC_PUBLIC_API unsigned spvc_compiler_get_current_id_bound(spvc_compiler compiler);
719 
720 /* Create compiler options, which will initialize defaults. */
721 SPVC_PUBLIC_API spvc_result spvc_compiler_create_compiler_options(spvc_compiler compiler,
722                                                                   spvc_compiler_options *options);
723 /* Override options. Will return error if e.g. MSL options are used for the HLSL backend, etc. */
724 SPVC_PUBLIC_API spvc_result spvc_compiler_options_set_bool(spvc_compiler_options options,
725                                                            spvc_compiler_option option, spvc_bool value);
726 SPVC_PUBLIC_API spvc_result spvc_compiler_options_set_uint(spvc_compiler_options options,
727                                                            spvc_compiler_option option, unsigned value);
728 /* Set compiler options. */
729 SPVC_PUBLIC_API spvc_result spvc_compiler_install_compiler_options(spvc_compiler compiler,
730                                                                    spvc_compiler_options options);
731 
732 /* Compile IR into a string. *source is owned by the context, and caller must not free it themselves. */
733 SPVC_PUBLIC_API spvc_result spvc_compiler_compile(spvc_compiler compiler, const char **source);
734 
735 /* Maps to C++ API. */
736 SPVC_PUBLIC_API spvc_result spvc_compiler_add_header_line(spvc_compiler compiler, const char *line);
737 SPVC_PUBLIC_API spvc_result spvc_compiler_require_extension(spvc_compiler compiler, const char *ext);
738 SPVC_PUBLIC_API spvc_result spvc_compiler_flatten_buffer_block(spvc_compiler compiler, spvc_variable_id id);
739 
740 SPVC_PUBLIC_API spvc_bool spvc_compiler_variable_is_depth_or_compare(spvc_compiler compiler, spvc_variable_id id);
741 
742 SPVC_PUBLIC_API spvc_result spvc_compiler_mask_stage_output_by_location(spvc_compiler compiler,
743                                                                         unsigned location, unsigned component);
744 SPVC_PUBLIC_API spvc_result spvc_compiler_mask_stage_output_by_builtin(spvc_compiler compiler, SpvBuiltIn builtin);
745 
746 /*
747  * HLSL specifics.
748  * Maps to C++ API.
749  */
750 SPVC_PUBLIC_API spvc_result spvc_compiler_hlsl_set_root_constants_layout(spvc_compiler compiler,
751                                                                          const spvc_hlsl_root_constants *constant_info,
752                                                                          size_t count);
753 SPVC_PUBLIC_API spvc_result spvc_compiler_hlsl_add_vertex_attribute_remap(spvc_compiler compiler,
754                                                                           const spvc_hlsl_vertex_attribute_remap *remap,
755                                                                           size_t remaps);
756 SPVC_PUBLIC_API spvc_variable_id spvc_compiler_hlsl_remap_num_workgroups_builtin(spvc_compiler compiler);
757 
758 SPVC_PUBLIC_API spvc_result spvc_compiler_hlsl_set_resource_binding_flags(spvc_compiler compiler,
759                                                                           spvc_hlsl_binding_flags flags);
760 
761 SPVC_PUBLIC_API spvc_result spvc_compiler_hlsl_add_resource_binding(spvc_compiler compiler,
762                                                                     const spvc_hlsl_resource_binding *binding);
763 SPVC_PUBLIC_API spvc_bool spvc_compiler_hlsl_is_resource_used(spvc_compiler compiler,
764                                                               SpvExecutionModel model,
765                                                               unsigned set,
766                                                               unsigned binding);
767 
768 /*
769  * MSL specifics.
770  * Maps to C++ API.
771  */
772 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_is_rasterization_disabled(spvc_compiler compiler);
773 
774 /* Obsolete. Renamed to needs_swizzle_buffer. */
775 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_needs_aux_buffer(spvc_compiler compiler);
776 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_needs_swizzle_buffer(spvc_compiler compiler);
777 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_needs_buffer_size_buffer(spvc_compiler compiler);
778 
779 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_needs_output_buffer(spvc_compiler compiler);
780 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_needs_patch_output_buffer(spvc_compiler compiler);
781 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_needs_input_threadgroup_mem(spvc_compiler compiler);
782 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_add_vertex_attribute(spvc_compiler compiler,
783                                                                    const spvc_msl_vertex_attribute *attrs);
784 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_add_resource_binding(spvc_compiler compiler,
785                                                                    const spvc_msl_resource_binding *binding);
786 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_add_shader_input(spvc_compiler compiler,
787                                                                const spvc_msl_shader_input *input);
788 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_add_discrete_descriptor_set(spvc_compiler compiler, unsigned desc_set);
789 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_set_argument_buffer_device_address_space(spvc_compiler compiler, unsigned desc_set, spvc_bool device_address);
790 
791 /* Obsolete, use is_shader_input_used. */
792 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_is_vertex_attribute_used(spvc_compiler compiler, unsigned location);
793 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_is_shader_input_used(spvc_compiler compiler, unsigned location);
794 
795 SPVC_PUBLIC_API spvc_bool spvc_compiler_msl_is_resource_used(spvc_compiler compiler,
796                                                              SpvExecutionModel model,
797                                                              unsigned set,
798                                                              unsigned binding);
799 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_remap_constexpr_sampler(spvc_compiler compiler, spvc_variable_id id, const spvc_msl_constexpr_sampler *sampler);
800 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_remap_constexpr_sampler_by_binding(spvc_compiler compiler, unsigned desc_set, unsigned binding, const spvc_msl_constexpr_sampler *sampler);
801 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_remap_constexpr_sampler_ycbcr(spvc_compiler compiler, spvc_variable_id id, const spvc_msl_constexpr_sampler *sampler, const spvc_msl_sampler_ycbcr_conversion *conv);
802 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_remap_constexpr_sampler_by_binding_ycbcr(spvc_compiler compiler, unsigned desc_set, unsigned binding, const spvc_msl_constexpr_sampler *sampler, const spvc_msl_sampler_ycbcr_conversion *conv);
803 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_set_fragment_output_components(spvc_compiler compiler, unsigned location, unsigned components);
804 
805 SPVC_PUBLIC_API unsigned spvc_compiler_msl_get_automatic_resource_binding(spvc_compiler compiler, spvc_variable_id id);
806 SPVC_PUBLIC_API unsigned spvc_compiler_msl_get_automatic_resource_binding_secondary(spvc_compiler compiler, spvc_variable_id id);
807 
808 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_add_dynamic_buffer(spvc_compiler compiler, unsigned desc_set, unsigned binding, unsigned index);
809 
810 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_add_inline_uniform_block(spvc_compiler compiler, unsigned desc_set, unsigned binding);
811 
812 SPVC_PUBLIC_API spvc_result spvc_compiler_msl_set_combined_sampler_suffix(spvc_compiler compiler, const char *suffix);
813 SPVC_PUBLIC_API const char *spvc_compiler_msl_get_combined_sampler_suffix(spvc_compiler compiler);
814 
815 /*
816  * Reflect resources.
817  * Maps almost 1:1 to C++ API.
818  */
819 SPVC_PUBLIC_API spvc_result spvc_compiler_get_active_interface_variables(spvc_compiler compiler, spvc_set *set);
820 SPVC_PUBLIC_API spvc_result spvc_compiler_set_enabled_interface_variables(spvc_compiler compiler, spvc_set set);
821 SPVC_PUBLIC_API spvc_result spvc_compiler_create_shader_resources(spvc_compiler compiler, spvc_resources *resources);
822 SPVC_PUBLIC_API spvc_result spvc_compiler_create_shader_resources_for_active_variables(spvc_compiler compiler,
823                                                                                        spvc_resources *resources,
824                                                                                        spvc_set active);
825 SPVC_PUBLIC_API spvc_result spvc_resources_get_resource_list_for_type(spvc_resources resources, spvc_resource_type type,
826                                                                       const spvc_reflected_resource **resource_list,
827                                                                       size_t *resource_size);
828 
829 SPVC_PUBLIC_API spvc_result spvc_resources_get_builtin_resource_list_for_type(
830 		spvc_resources resources, spvc_builtin_resource_type type,
831 		const spvc_reflected_builtin_resource **resource_list,
832 		size_t *resource_size);
833 
834 /*
835  * Decorations.
836  * Maps to C++ API.
837  */
838 SPVC_PUBLIC_API void spvc_compiler_set_decoration(spvc_compiler compiler, SpvId id, SpvDecoration decoration,
839                                                   unsigned argument);
840 SPVC_PUBLIC_API void spvc_compiler_set_decoration_string(spvc_compiler compiler, SpvId id, SpvDecoration decoration,
841                                                          const char *argument);
842 SPVC_PUBLIC_API void spvc_compiler_set_name(spvc_compiler compiler, SpvId id, const char *argument);
843 SPVC_PUBLIC_API void spvc_compiler_set_member_decoration(spvc_compiler compiler, spvc_type_id id, unsigned member_index,
844                                                          SpvDecoration decoration, unsigned argument);
845 SPVC_PUBLIC_API void spvc_compiler_set_member_decoration_string(spvc_compiler compiler, spvc_type_id id,
846                                                                 unsigned member_index, SpvDecoration decoration,
847                                                                 const char *argument);
848 SPVC_PUBLIC_API void spvc_compiler_set_member_name(spvc_compiler compiler, spvc_type_id id, unsigned member_index,
849                                                    const char *argument);
850 SPVC_PUBLIC_API void spvc_compiler_unset_decoration(spvc_compiler compiler, SpvId id, SpvDecoration decoration);
851 SPVC_PUBLIC_API void spvc_compiler_unset_member_decoration(spvc_compiler compiler, spvc_type_id id,
852                                                            unsigned member_index, SpvDecoration decoration);
853 
854 SPVC_PUBLIC_API spvc_bool spvc_compiler_has_decoration(spvc_compiler compiler, SpvId id, SpvDecoration decoration);
855 SPVC_PUBLIC_API spvc_bool spvc_compiler_has_member_decoration(spvc_compiler compiler, spvc_type_id id,
856                                                               unsigned member_index, SpvDecoration decoration);
857 SPVC_PUBLIC_API const char *spvc_compiler_get_name(spvc_compiler compiler, SpvId id);
858 SPVC_PUBLIC_API unsigned spvc_compiler_get_decoration(spvc_compiler compiler, SpvId id, SpvDecoration decoration);
859 SPVC_PUBLIC_API const char *spvc_compiler_get_decoration_string(spvc_compiler compiler, SpvId id,
860                                                                 SpvDecoration decoration);
861 SPVC_PUBLIC_API unsigned spvc_compiler_get_member_decoration(spvc_compiler compiler, spvc_type_id id,
862                                                              unsigned member_index, SpvDecoration decoration);
863 SPVC_PUBLIC_API const char *spvc_compiler_get_member_decoration_string(spvc_compiler compiler, spvc_type_id id,
864                                                                        unsigned member_index, SpvDecoration decoration);
865 SPVC_PUBLIC_API const char *spvc_compiler_get_member_name(spvc_compiler compiler, spvc_type_id id, unsigned member_index);
866 
867 /*
868  * Entry points.
869  * Maps to C++ API.
870  */
871 SPVC_PUBLIC_API spvc_result spvc_compiler_get_entry_points(spvc_compiler compiler,
872                                                            const spvc_entry_point **entry_points,
873                                                            size_t *num_entry_points);
874 SPVC_PUBLIC_API spvc_result spvc_compiler_set_entry_point(spvc_compiler compiler, const char *name,
875                                                           SpvExecutionModel model);
876 SPVC_PUBLIC_API spvc_result spvc_compiler_rename_entry_point(spvc_compiler compiler, const char *old_name,
877                                                              const char *new_name, SpvExecutionModel model);
878 SPVC_PUBLIC_API const char *spvc_compiler_get_cleansed_entry_point_name(spvc_compiler compiler, const char *name,
879                                                                         SpvExecutionModel model);
880 SPVC_PUBLIC_API void spvc_compiler_set_execution_mode(spvc_compiler compiler, SpvExecutionMode mode);
881 SPVC_PUBLIC_API void spvc_compiler_unset_execution_mode(spvc_compiler compiler, SpvExecutionMode mode);
882 SPVC_PUBLIC_API void spvc_compiler_set_execution_mode_with_arguments(spvc_compiler compiler, SpvExecutionMode mode,
883                                                                      unsigned arg0, unsigned arg1, unsigned arg2);
884 SPVC_PUBLIC_API spvc_result spvc_compiler_get_execution_modes(spvc_compiler compiler, const SpvExecutionMode **modes,
885                                                               size_t *num_modes);
886 SPVC_PUBLIC_API unsigned spvc_compiler_get_execution_mode_argument(spvc_compiler compiler, SpvExecutionMode mode);
887 SPVC_PUBLIC_API unsigned spvc_compiler_get_execution_mode_argument_by_index(spvc_compiler compiler,
888                                                                             SpvExecutionMode mode, unsigned index);
889 SPVC_PUBLIC_API SpvExecutionModel spvc_compiler_get_execution_model(spvc_compiler compiler);
890 SPVC_PUBLIC_API void spvc_compiler_update_active_builtins(spvc_compiler compiler);
891 SPVC_PUBLIC_API spvc_bool spvc_compiler_has_active_builtin(spvc_compiler compiler, SpvBuiltIn builtin, SpvStorageClass storage);
892 
893 /*
894  * Type query interface.
895  * Maps to C++ API, except it's read-only.
896  */
897 SPVC_PUBLIC_API spvc_type spvc_compiler_get_type_handle(spvc_compiler compiler, spvc_type_id id);
898 
899 /* Pulls out SPIRType::self. This effectively gives the type ID without array or pointer qualifiers.
900  * This is necessary when reflecting decoration/name information on members of a struct,
901  * which are placed in the base type, not the qualified type.
902  * This is similar to spvc_reflected_resource::base_type_id. */
903 SPVC_PUBLIC_API spvc_type_id spvc_type_get_base_type_id(spvc_type type);
904 
905 SPVC_PUBLIC_API spvc_basetype spvc_type_get_basetype(spvc_type type);
906 SPVC_PUBLIC_API unsigned spvc_type_get_bit_width(spvc_type type);
907 SPVC_PUBLIC_API unsigned spvc_type_get_vector_size(spvc_type type);
908 SPVC_PUBLIC_API unsigned spvc_type_get_columns(spvc_type type);
909 SPVC_PUBLIC_API unsigned spvc_type_get_num_array_dimensions(spvc_type type);
910 SPVC_PUBLIC_API spvc_bool spvc_type_array_dimension_is_literal(spvc_type type, unsigned dimension);
911 SPVC_PUBLIC_API SpvId spvc_type_get_array_dimension(spvc_type type, unsigned dimension);
912 SPVC_PUBLIC_API unsigned spvc_type_get_num_member_types(spvc_type type);
913 SPVC_PUBLIC_API spvc_type_id spvc_type_get_member_type(spvc_type type, unsigned index);
914 SPVC_PUBLIC_API SpvStorageClass spvc_type_get_storage_class(spvc_type type);
915 
916 /* Image type query. */
917 SPVC_PUBLIC_API spvc_type_id spvc_type_get_image_sampled_type(spvc_type type);
918 SPVC_PUBLIC_API SpvDim spvc_type_get_image_dimension(spvc_type type);
919 SPVC_PUBLIC_API spvc_bool spvc_type_get_image_is_depth(spvc_type type);
920 SPVC_PUBLIC_API spvc_bool spvc_type_get_image_arrayed(spvc_type type);
921 SPVC_PUBLIC_API spvc_bool spvc_type_get_image_multisampled(spvc_type type);
922 SPVC_PUBLIC_API spvc_bool spvc_type_get_image_is_storage(spvc_type type);
923 SPVC_PUBLIC_API SpvImageFormat spvc_type_get_image_storage_format(spvc_type type);
924 SPVC_PUBLIC_API SpvAccessQualifier spvc_type_get_image_access_qualifier(spvc_type type);
925 
926 /*
927  * Buffer layout query.
928  * Maps to C++ API.
929  */
930 SPVC_PUBLIC_API spvc_result spvc_compiler_get_declared_struct_size(spvc_compiler compiler, spvc_type struct_type, size_t *size);
931 SPVC_PUBLIC_API spvc_result spvc_compiler_get_declared_struct_size_runtime_array(spvc_compiler compiler,
932                                                                                  spvc_type struct_type, size_t array_size, size_t *size);
933 SPVC_PUBLIC_API spvc_result spvc_compiler_get_declared_struct_member_size(spvc_compiler compiler, spvc_type type, unsigned index, size_t *size);
934 
935 SPVC_PUBLIC_API spvc_result spvc_compiler_type_struct_member_offset(spvc_compiler compiler,
936                                                                     spvc_type type, unsigned index, unsigned *offset);
937 SPVC_PUBLIC_API spvc_result spvc_compiler_type_struct_member_array_stride(spvc_compiler compiler,
938                                                                           spvc_type type, unsigned index, unsigned *stride);
939 SPVC_PUBLIC_API spvc_result spvc_compiler_type_struct_member_matrix_stride(spvc_compiler compiler,
940                                                                            spvc_type type, unsigned index, unsigned *stride);
941 
942 /*
943  * Workaround helper functions.
944  * Maps to C++ API.
945  */
946 SPVC_PUBLIC_API spvc_result spvc_compiler_build_dummy_sampler_for_combined_images(spvc_compiler compiler, spvc_variable_id *id);
947 SPVC_PUBLIC_API spvc_result spvc_compiler_build_combined_image_samplers(spvc_compiler compiler);
948 SPVC_PUBLIC_API spvc_result spvc_compiler_get_combined_image_samplers(spvc_compiler compiler,
949                                                                       const spvc_combined_image_sampler **samplers,
950                                                                       size_t *num_samplers);
951 
952 /*
953  * Constants
954  * Maps to C++ API.
955  */
956 SPVC_PUBLIC_API spvc_result spvc_compiler_get_specialization_constants(spvc_compiler compiler,
957                                                                        const spvc_specialization_constant **constants,
958                                                                        size_t *num_constants);
959 SPVC_PUBLIC_API spvc_constant spvc_compiler_get_constant_handle(spvc_compiler compiler,
960                                                                 spvc_constant_id id);
961 
962 SPVC_PUBLIC_API spvc_constant_id spvc_compiler_get_work_group_size_specialization_constants(spvc_compiler compiler,
963                                                                                             spvc_specialization_constant *x,
964                                                                                             spvc_specialization_constant *y,
965                                                                                             spvc_specialization_constant *z);
966 
967 /*
968  * Buffer ranges
969  * Maps to C++ API.
970  */
971 SPVC_PUBLIC_API spvc_result spvc_compiler_get_active_buffer_ranges(spvc_compiler compiler,
972                                                                    spvc_variable_id id,
973                                                                    const spvc_buffer_range **ranges,
974                                                                    size_t *num_ranges);
975 
976 /*
977  * No stdint.h until C99, sigh :(
978  * For smaller types, the result is sign or zero-extended as appropriate.
979  * Maps to C++ API.
980  * TODO: The SPIRConstant query interface and modification interface is not quite complete.
981  */
982 SPVC_PUBLIC_API float spvc_constant_get_scalar_fp16(spvc_constant constant, unsigned column, unsigned row);
983 SPVC_PUBLIC_API float spvc_constant_get_scalar_fp32(spvc_constant constant, unsigned column, unsigned row);
984 SPVC_PUBLIC_API double spvc_constant_get_scalar_fp64(spvc_constant constant, unsigned column, unsigned row);
985 SPVC_PUBLIC_API unsigned spvc_constant_get_scalar_u32(spvc_constant constant, unsigned column, unsigned row);
986 SPVC_PUBLIC_API int spvc_constant_get_scalar_i32(spvc_constant constant, unsigned column, unsigned row);
987 SPVC_PUBLIC_API unsigned spvc_constant_get_scalar_u16(spvc_constant constant, unsigned column, unsigned row);
988 SPVC_PUBLIC_API int spvc_constant_get_scalar_i16(spvc_constant constant, unsigned column, unsigned row);
989 SPVC_PUBLIC_API unsigned spvc_constant_get_scalar_u8(spvc_constant constant, unsigned column, unsigned row);
990 SPVC_PUBLIC_API int spvc_constant_get_scalar_i8(spvc_constant constant, unsigned column, unsigned row);
991 SPVC_PUBLIC_API void spvc_constant_get_subconstants(spvc_constant constant, const spvc_constant_id **constituents, size_t *count);
992 SPVC_PUBLIC_API spvc_type_id spvc_constant_get_type(spvc_constant constant);
993 
994 /*
995  * Misc reflection
996  * Maps to C++ API.
997  */
998 SPVC_PUBLIC_API spvc_bool spvc_compiler_get_binary_offset_for_decoration(spvc_compiler compiler,
999                                                                          spvc_variable_id id,
1000                                                                          SpvDecoration decoration,
1001                                                                          unsigned *word_offset);
1002 
1003 SPVC_PUBLIC_API spvc_bool spvc_compiler_buffer_is_hlsl_counter_buffer(spvc_compiler compiler, spvc_variable_id id);
1004 SPVC_PUBLIC_API spvc_bool spvc_compiler_buffer_get_hlsl_counter_buffer(spvc_compiler compiler, spvc_variable_id id,
1005                                                                        spvc_variable_id *counter_id);
1006 
1007 SPVC_PUBLIC_API spvc_result spvc_compiler_get_declared_capabilities(spvc_compiler compiler,
1008                                                                     const SpvCapability **capabilities,
1009                                                                     size_t *num_capabilities);
1010 SPVC_PUBLIC_API spvc_result spvc_compiler_get_declared_extensions(spvc_compiler compiler, const char ***extensions,
1011                                                                   size_t *num_extensions);
1012 
1013 SPVC_PUBLIC_API const char *spvc_compiler_get_remapped_declared_block_name(spvc_compiler compiler, spvc_variable_id id);
1014 SPVC_PUBLIC_API spvc_result spvc_compiler_get_buffer_block_decorations(spvc_compiler compiler, spvc_variable_id id,
1015                                                                        const SpvDecoration **decorations,
1016                                                                        size_t *num_decorations);
1017 
1018 #ifdef __cplusplus
1019 }
1020 #endif
1021 #endif
1022