2 * Copyright © 2008, 2009 Intel Corporation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
23 #include <inttypes.h> /* for PRIx64 macro */
29 #include "main/context.h"
30 #include "main/debug_output.h"
31 #include "main/formats.h"
32 #include "main/shaderobj.h"
33 #include "util/u_atomic.h" /* for p_atomic_cmpxchg */
34 #include "util/ralloc.h"
35 #include "util/disk_cache.h"
36 #include "util/mesa-sha1.h"
38 #include "glsl_parser_extras.h"
39 #include "glsl_parser.h"
40 #include "ir_optimization.h"
41 #include "loop_analysis.h"
42 #include "builtin_functions.h"
45 * Format a short human-readable description of the given GLSL version.
48 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
)
50 return ralloc_asprintf(mem_ctx
, "GLSL%s %d.%02d", is_es
? " ES" : "",
51 version
/ 100, version
% 100);
55 static const unsigned known_desktop_glsl_versions
[] =
56 { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440, 450, 460 };
57 static const unsigned known_desktop_gl_versions
[] =
58 { 20, 21, 30, 31, 32, 33, 40, 41, 42, 43, 44, 45, 46 };
61 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context
*_ctx
,
62 gl_shader_stage stage
,
64 : ctx(_ctx
), cs_input_local_size_specified(false), cs_input_local_size(),
65 switch_state(), warnings_enabled(true)
67 assert(stage
< MESA_SHADER_STAGES
);
71 this->translation_unit
.make_empty();
72 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
74 this->linalloc
= linear_alloc_parent(this, 0);
76 this->info_log
= ralloc_strdup(mem_ctx
, "");
78 this->loop_nesting_ast
= NULL
;
80 this->uses_builtin_functions
= false;
82 /* Set default language version and extensions */
83 this->language_version
= 110;
84 this->forced_language_version
= ctx
->Const
.ForceGLSLVersion
;
85 if (ctx
->Const
.GLSLZeroInit
== 1) {
86 this->zero_init
= (1u << ir_var_auto
) | (1u << ir_var_temporary
) | (1u << ir_var_shader_out
);
87 } else if (ctx
->Const
.GLSLZeroInit
== 2) {
88 this->zero_init
= (1u << ir_var_auto
) | (1u << ir_var_temporary
) | (1u << ir_var_function_out
);
92 this->gl_version
= 20;
93 this->compat_shader
= true;
94 this->es_shader
= false;
95 this->ARB_texture_rectangle_enable
= true;
97 /* OpenGL ES 2.0 has different defaults from desktop GL. */
98 if (ctx
->API
== API_OPENGLES2
) {
99 this->language_version
= 100;
100 this->es_shader
= true;
101 this->ARB_texture_rectangle_enable
= false;
104 this->extensions
= &ctx
->Extensions
;
106 this->Const
.MaxLights
= ctx
->Const
.MaxLights
;
107 this->Const
.MaxClipPlanes
= ctx
->Const
.MaxClipPlanes
;
108 this->Const
.MaxTextureUnits
= ctx
->Const
.MaxTextureUnits
;
109 this->Const
.MaxTextureCoords
= ctx
->Const
.MaxTextureCoordUnits
;
110 this->Const
.MaxVertexAttribs
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
;
111 this->Const
.MaxVertexUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxUniformComponents
;
112 this->Const
.MaxVertexTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
;
113 this->Const
.MaxCombinedTextureImageUnits
= ctx
->Const
.MaxCombinedTextureImageUnits
;
114 this->Const
.MaxTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
;
115 this->Const
.MaxFragmentUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxUniformComponents
;
116 this->Const
.MinProgramTexelOffset
= ctx
->Const
.MinProgramTexelOffset
;
117 this->Const
.MaxProgramTexelOffset
= ctx
->Const
.MaxProgramTexelOffset
;
119 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
121 this->Const
.MaxDualSourceDrawBuffers
= ctx
->Const
.MaxDualSourceDrawBuffers
;
124 this->Const
.MaxVertexOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
;
125 this->Const
.MaxGeometryInputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
;
126 this->Const
.MaxGeometryOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
;
127 this->Const
.MaxGeometryShaderInvocations
= ctx
->Const
.MaxGeometryShaderInvocations
;
128 this->Const
.MaxFragmentInputComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
;
129 this->Const
.MaxGeometryTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
;
130 this->Const
.MaxGeometryOutputVertices
= ctx
->Const
.MaxGeometryOutputVertices
;
131 this->Const
.MaxGeometryTotalOutputComponents
= ctx
->Const
.MaxGeometryTotalOutputComponents
;
132 this->Const
.MaxGeometryUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxUniformComponents
;
134 this->Const
.MaxVertexAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
;
135 this->Const
.MaxTessControlAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicCounters
;
136 this->Const
.MaxTessEvaluationAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicCounters
;
137 this->Const
.MaxGeometryAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
;
138 this->Const
.MaxFragmentAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
;
139 this->Const
.MaxComputeAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
;
140 this->Const
.MaxCombinedAtomicCounters
= ctx
->Const
.MaxCombinedAtomicCounters
;
141 this->Const
.MaxAtomicBufferBindings
= ctx
->Const
.MaxAtomicBufferBindings
;
142 this->Const
.MaxVertexAtomicCounterBuffers
=
143 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
;
144 this->Const
.MaxTessControlAtomicCounterBuffers
=
145 ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicBuffers
;
146 this->Const
.MaxTessEvaluationAtomicCounterBuffers
=
147 ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicBuffers
;
148 this->Const
.MaxGeometryAtomicCounterBuffers
=
149 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
;
150 this->Const
.MaxFragmentAtomicCounterBuffers
=
151 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
152 this->Const
.MaxComputeAtomicCounterBuffers
=
153 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
;
154 this->Const
.MaxCombinedAtomicCounterBuffers
=
155 ctx
->Const
.MaxCombinedAtomicBuffers
;
156 this->Const
.MaxAtomicCounterBufferSize
=
157 ctx
->Const
.MaxAtomicBufferSize
;
159 /* ARB_enhanced_layouts constants */
160 this->Const
.MaxTransformFeedbackBuffers
= ctx
->Const
.MaxTransformFeedbackBuffers
;
161 this->Const
.MaxTransformFeedbackInterleavedComponents
= ctx
->Const
.MaxTransformFeedbackInterleavedComponents
;
163 /* Compute shader constants */
164 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupCount
); i
++)
165 this->Const
.MaxComputeWorkGroupCount
[i
] = ctx
->Const
.MaxComputeWorkGroupCount
[i
];
166 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupSize
); i
++)
167 this->Const
.MaxComputeWorkGroupSize
[i
] = ctx
->Const
.MaxComputeWorkGroupSize
[i
];
169 this->Const
.MaxComputeTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
170 this->Const
.MaxComputeUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxUniformComponents
;
172 this->Const
.MaxImageUnits
= ctx
->Const
.MaxImageUnits
;
173 this->Const
.MaxCombinedShaderOutputResources
= ctx
->Const
.MaxCombinedShaderOutputResources
;
174 this->Const
.MaxImageSamples
= ctx
->Const
.MaxImageSamples
;
175 this->Const
.MaxVertexImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
;
176 this->Const
.MaxTessControlImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxImageUniforms
;
177 this->Const
.MaxTessEvaluationImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxImageUniforms
;
178 this->Const
.MaxGeometryImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxImageUniforms
;
179 this->Const
.MaxFragmentImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
;
180 this->Const
.MaxComputeImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxImageUniforms
;
181 this->Const
.MaxCombinedImageUniforms
= ctx
->Const
.MaxCombinedImageUniforms
;
183 /* ARB_viewport_array */
184 this->Const
.MaxViewports
= ctx
->Const
.MaxViewports
;
186 /* tessellation shader constants */
187 this->Const
.MaxPatchVertices
= ctx
->Const
.MaxPatchVertices
;
188 this->Const
.MaxTessGenLevel
= ctx
->Const
.MaxTessGenLevel
;
189 this->Const
.MaxTessControlInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxInputComponents
;
190 this->Const
.MaxTessControlOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxOutputComponents
;
191 this->Const
.MaxTessControlTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxTextureImageUnits
;
192 this->Const
.MaxTessEvaluationInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxInputComponents
;
193 this->Const
.MaxTessEvaluationOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxOutputComponents
;
194 this->Const
.MaxTessEvaluationTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxTextureImageUnits
;
195 this->Const
.MaxTessPatchComponents
= ctx
->Const
.MaxTessPatchComponents
;
196 this->Const
.MaxTessControlTotalOutputComponents
= ctx
->Const
.MaxTessControlTotalOutputComponents
;
197 this->Const
.MaxTessControlUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxUniformComponents
;
198 this->Const
.MaxTessEvaluationUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxUniformComponents
;
200 /* GL 4.5 / OES_sample_variables */
201 this->Const
.MaxSamples
= ctx
->Const
.MaxSamples
;
203 this->current_function
= NULL
;
204 this->toplevel_ir
= NULL
;
205 this->found_return
= false;
206 this->found_begin_interlock
= false;
207 this->found_end_interlock
= false;
208 this->all_invariant
= false;
209 this->user_structures
= NULL
;
210 this->num_user_structures
= 0;
211 this->num_subroutines
= 0;
212 this->subroutines
= NULL
;
213 this->num_subroutine_types
= 0;
214 this->subroutine_types
= NULL
;
216 /* supported_versions should be large enough to support the known desktop
217 * GLSL versions plus 4 GLES versions (ES 1.00, ES 3.00, ES 3.10, ES 3.20)
219 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions
) + 4) ==
220 ARRAY_SIZE(this->supported_versions
));
222 /* Populate the list of supported GLSL versions */
223 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
224 * the OpenGL 3.2 Core context is supported, this logic will need
225 * change. Older versions of GLSL are no longer supported
226 * outside the compatibility contexts of 3.x.
228 this->num_supported_versions
= 0;
229 if (_mesa_is_desktop_gl(ctx
)) {
230 for (unsigned i
= 0; i
< ARRAY_SIZE(known_desktop_glsl_versions
); i
++) {
231 if (known_desktop_glsl_versions
[i
] <= ctx
->Const
.GLSLVersion
) {
232 this->supported_versions
[this->num_supported_versions
].ver
233 = known_desktop_glsl_versions
[i
];
234 this->supported_versions
[this->num_supported_versions
].gl_ver
235 = known_desktop_gl_versions
[i
];
236 this->supported_versions
[this->num_supported_versions
].es
= false;
237 this->num_supported_versions
++;
241 if (ctx
->API
== API_OPENGLES2
|| ctx
->Extensions
.ARB_ES2_compatibility
) {
242 this->supported_versions
[this->num_supported_versions
].ver
= 100;
243 this->supported_versions
[this->num_supported_versions
].gl_ver
= 20;
244 this->supported_versions
[this->num_supported_versions
].es
= true;
245 this->num_supported_versions
++;
247 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
) {
248 this->supported_versions
[this->num_supported_versions
].ver
= 300;
249 this->supported_versions
[this->num_supported_versions
].gl_ver
= 30;
250 this->supported_versions
[this->num_supported_versions
].es
= true;
251 this->num_supported_versions
++;
253 if (_mesa_is_gles31(ctx
) || ctx
->Extensions
.ARB_ES3_1_compatibility
) {
254 this->supported_versions
[this->num_supported_versions
].ver
= 310;
255 this->supported_versions
[this->num_supported_versions
].gl_ver
= 31;
256 this->supported_versions
[this->num_supported_versions
].es
= true;
257 this->num_supported_versions
++;
259 if ((ctx
->API
== API_OPENGLES2
&& ctx
->Version
>= 32) ||
260 ctx
->Extensions
.ARB_ES3_2_compatibility
) {
261 this->supported_versions
[this->num_supported_versions
].ver
= 320;
262 this->supported_versions
[this->num_supported_versions
].gl_ver
= 32;
263 this->supported_versions
[this->num_supported_versions
].es
= true;
264 this->num_supported_versions
++;
267 /* Create a string for use in error messages to tell the user which GLSL
268 * versions are supported.
270 char *supported
= ralloc_strdup(this, "");
271 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
272 unsigned ver
= this->supported_versions
[i
].ver
;
273 const char *const prefix
= (i
== 0)
275 : ((i
== this->num_supported_versions
- 1) ? ", and " : ", ");
276 const char *const suffix
= (this->supported_versions
[i
].es
) ? " ES" : "";
278 ralloc_asprintf_append(& supported
, "%s%u.%02u%s",
280 ver
/ 100, ver
% 100,
284 this->supported_version_string
= supported
;
286 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
287 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
289 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
290 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
291 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
293 this->default_shader_storage_qualifier
= new(this) ast_type_qualifier();
294 this->default_shader_storage_qualifier
->flags
.q
.shared
= 1;
295 this->default_shader_storage_qualifier
->flags
.q
.column_major
= 1;
297 this->fs_uses_gl_fragcoord
= false;
298 this->fs_redeclares_gl_fragcoord
= false;
299 this->fs_origin_upper_left
= false;
300 this->fs_pixel_center_integer
= false;
301 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers
= false;
303 this->gs_input_prim_type_specified
= false;
304 this->tcs_output_vertices_specified
= false;
305 this->gs_input_size
= 0;
306 this->in_qualifier
= new(this) ast_type_qualifier();
307 this->out_qualifier
= new(this) ast_type_qualifier();
308 this->fs_early_fragment_tests
= false;
309 this->fs_inner_coverage
= false;
310 this->fs_post_depth_coverage
= false;
311 this->fs_pixel_interlock_ordered
= false;
312 this->fs_pixel_interlock_unordered
= false;
313 this->fs_sample_interlock_ordered
= false;
314 this->fs_sample_interlock_unordered
= false;
315 this->fs_blend_support
= 0;
316 memset(this->atomic_counter_offsets
, 0,
317 sizeof(this->atomic_counter_offsets
));
318 this->allow_extension_directive_midshader
=
319 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
;
320 this->allow_glsl_120_subset_in_110
=
321 ctx
->Const
.AllowGLSL120SubsetIn110
;
322 this->allow_builtin_variable_redeclaration
=
323 ctx
->Const
.AllowGLSLBuiltinVariableRedeclaration
;
324 this->allow_layout_qualifier_on_function_parameter
=
325 ctx
->Const
.AllowLayoutQualifiersOnFunctionParameters
;
327 this->cs_input_local_size_variable_specified
= false;
329 /* ARB_bindless_texture */
330 this->bindless_sampler_specified
= false;
331 this->bindless_image_specified
= false;
332 this->bound_sampler_specified
= false;
333 this->bound_image_specified
= false;
337 * Determine whether the current GLSL version is sufficiently high to support
338 * a certain feature, and generate an error message if it isn't.
340 * \param required_glsl_version and \c required_glsl_es_version are
341 * interpreted as they are in _mesa_glsl_parse_state::is_version().
343 * \param locp is the parser location where the error should be reported.
345 * \param fmt (and additional arguments) constitute a printf-style error
346 * message to report if the version check fails. Information about the
347 * current and required GLSL versions will be appended. So, for example, if
348 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
349 * "foo unsupported") is called, the error message will be "foo unsupported in
350 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
353 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
354 unsigned required_glsl_es_version
,
355 YYLTYPE
*locp
, const char *fmt
, ...)
357 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
362 char *problem
= ralloc_vasprintf(this, fmt
, args
);
364 const char *glsl_version_string
365 = glsl_compute_version_string(this, false, required_glsl_version
);
366 const char *glsl_es_version_string
367 = glsl_compute_version_string(this, true, required_glsl_es_version
);
368 const char *requirement_string
= "";
369 if (required_glsl_version
&& required_glsl_es_version
) {
370 requirement_string
= ralloc_asprintf(this, " (%s or %s required)",
372 glsl_es_version_string
);
373 } else if (required_glsl_version
) {
374 requirement_string
= ralloc_asprintf(this, " (%s required)",
375 glsl_version_string
);
376 } else if (required_glsl_es_version
) {
377 requirement_string
= ralloc_asprintf(this, " (%s required)",
378 glsl_es_version_string
);
380 _mesa_glsl_error(locp
, this, "%s in %s%s",
381 problem
, this->get_version_string(),
388 * Process a GLSL #version directive.
390 * \param version is the integer that follows the #version token.
392 * \param ident is a string identifier that follows the integer, if any is
393 * present. Otherwise NULL.
396 _mesa_glsl_parse_state::process_version_directive(YYLTYPE
*locp
, int version
,
399 bool es_token_present
= false;
400 bool compat_token_present
= false;
402 if (strcmp(ident
, "es") == 0) {
403 es_token_present
= true;
404 } else if (version
>= 150) {
405 if (strcmp(ident
, "core") == 0) {
406 /* Accept the token. There's no need to record that this is
407 * a core profile shader since that's the only profile we support.
409 } else if (strcmp(ident
, "compatibility") == 0) {
410 compat_token_present
= true;
412 if (this->ctx
->API
!= API_OPENGL_COMPAT
) {
413 _mesa_glsl_error(locp
, this,
414 "the compatibility profile is not supported");
417 _mesa_glsl_error(locp
, this,
418 "\"%s\" is not a valid shading language profile; "
419 "if present, it must be \"core\"", ident
);
422 _mesa_glsl_error(locp
, this,
423 "illegal text following version number");
427 this->es_shader
= es_token_present
;
428 if (version
== 100) {
429 if (es_token_present
) {
430 _mesa_glsl_error(locp
, this,
431 "GLSL 1.00 ES should be selected using "
434 this->es_shader
= true;
438 if (this->es_shader
) {
439 this->ARB_texture_rectangle_enable
= false;
442 if (this->forced_language_version
)
443 this->language_version
= this->forced_language_version
;
445 this->language_version
= version
;
447 this->compat_shader
= compat_token_present
||
448 (this->ctx
->API
== API_OPENGL_COMPAT
&&
449 this->language_version
== 140) ||
450 (!this->es_shader
&& this->language_version
< 140);
452 bool supported
= false;
453 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
454 if (this->supported_versions
[i
].ver
== this->language_version
455 && this->supported_versions
[i
].es
== this->es_shader
) {
456 this->gl_version
= this->supported_versions
[i
].gl_ver
;
463 _mesa_glsl_error(locp
, this, "%s is not supported. "
464 "Supported versions are: %s",
465 this->get_version_string(),
466 this->supported_version_string
);
468 /* On exit, the language_version must be set to a valid value.
469 * Later calls to _mesa_glsl_initialize_types will misbehave if
470 * the version is invalid.
472 switch (this->ctx
->API
) {
473 case API_OPENGL_COMPAT
:
474 case API_OPENGL_CORE
:
475 this->language_version
= this->ctx
->Const
.GLSLVersion
;
479 assert(!"Should not get here.");
483 this->language_version
= 100;
490 /* This helper function will append the given message to the shader's
491 info log and report it via GL_ARB_debug_output. Per that extension,
492 'type' is one of the enum values classifying the message, and
493 'id' is the implementation-defined ID of the given message. */
495 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
496 GLenum type
, const char *fmt
, va_list ap
)
498 bool error
= (type
== MESA_DEBUG_TYPE_ERROR
);
501 assert(state
->info_log
!= NULL
);
503 /* Get the offset that the new message will be written to. */
504 int msg_offset
= strlen(state
->info_log
);
507 ralloc_asprintf_append(&state
->info_log
, "\"%s\"", locp
->path
);
509 ralloc_asprintf_append(&state
->info_log
, "%u", locp
->source
);
511 ralloc_asprintf_append(&state
->info_log
, ":%u(%u): %s: ",
512 locp
->first_line
, locp
->first_column
,
513 error
? "error" : "warning");
515 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
517 const char *const msg
= &state
->info_log
[msg_offset
];
518 struct gl_context
*ctx
= state
->ctx
;
520 /* Report the error via GL_ARB_debug_output. */
521 _mesa_shader_debug(ctx
, type
, &msg_id
, msg
);
523 ralloc_strcat(&state
->info_log
, "\n");
527 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
528 const char *fmt
, ...)
535 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_ERROR
, fmt
, ap
);
541 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
542 const char *fmt
, ...)
544 if (state
->warnings_enabled
) {
548 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_OTHER
, fmt
, ap
);
555 * Enum representing the possible behaviors that can be specified in
556 * an #extension directive.
566 * Element type for _mesa_glsl_supported_extensions
568 struct _mesa_glsl_extension
{
570 * Name of the extension when referred to in a GLSL extension
576 * Whether this extension is a part of AEP
581 * Predicate that checks whether the relevant extension is available for
584 bool (*available_pred
)(const struct gl_context
*,
585 gl_api api
, uint8_t version
);
588 * Flag in the _mesa_glsl_parse_state struct that should be set
589 * when this extension is enabled.
591 * See note in _mesa_glsl_extension::supported_flag about "pointer
594 bool _mesa_glsl_parse_state::* enable_flag
;
597 * Flag in the _mesa_glsl_parse_state struct that should be set
598 * when the shader requests "warn" behavior for this extension.
600 * See note in _mesa_glsl_extension::supported_flag about "pointer
603 bool _mesa_glsl_parse_state::* warn_flag
;
606 bool compatible_with_state(const _mesa_glsl_parse_state
*state
,
607 gl_api api
, uint8_t gl_version
) const;
608 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
611 /** Checks if the context supports a user-facing extension */
612 #define EXT(name_str, driver_cap, ...) \
614 has_##name_str(const struct gl_context *ctx, gl_api api, uint8_t version) \
616 return ctx->Extensions.driver_cap && (version >= \
617 _mesa_extension_table[MESA_EXTENSION_##name_str].version[api]); \
619 #include "main/extensions_table.h"
623 { "GL_" #NAME, false, has_##NAME, \
624 &_mesa_glsl_parse_state::NAME##_enable, \
625 &_mesa_glsl_parse_state::NAME##_warn }
627 #define EXT_AEP(NAME) \
628 { "GL_" #NAME, true, has_##NAME, \
629 &_mesa_glsl_parse_state::NAME##_enable, \
630 &_mesa_glsl_parse_state::NAME##_warn }
633 * Table of extensions that can be enabled/disabled within a shader,
634 * and the conditions under which they are supported.
636 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
637 /* ARB extensions go here, sorted alphabetically.
639 EXT(ARB_ES3_1_compatibility
),
640 EXT(ARB_ES3_2_compatibility
),
641 EXT(ARB_arrays_of_arrays
),
642 EXT(ARB_bindless_texture
),
643 EXT(ARB_compatibility
),
644 EXT(ARB_compute_shader
),
645 EXT(ARB_compute_variable_group_size
),
646 EXT(ARB_conservative_depth
),
647 EXT(ARB_cull_distance
),
648 EXT(ARB_derivative_control
),
649 EXT(ARB_draw_buffers
),
650 EXT(ARB_draw_instanced
),
651 EXT(ARB_enhanced_layouts
),
652 EXT(ARB_explicit_attrib_location
),
653 EXT(ARB_explicit_uniform_location
),
654 EXT(ARB_fragment_coord_conventions
),
655 EXT(ARB_fragment_layer_viewport
),
656 EXT(ARB_fragment_shader_interlock
),
657 EXT(ARB_gpu_shader5
),
658 EXT(ARB_gpu_shader_fp64
),
659 EXT(ARB_gpu_shader_int64
),
660 EXT(ARB_post_depth_coverage
),
661 EXT(ARB_sample_shading
),
662 EXT(ARB_separate_shader_objects
),
663 EXT(ARB_shader_atomic_counter_ops
),
664 EXT(ARB_shader_atomic_counters
),
665 EXT(ARB_shader_ballot
),
666 EXT(ARB_shader_bit_encoding
),
667 EXT(ARB_shader_clock
),
668 EXT(ARB_shader_draw_parameters
),
669 EXT(ARB_shader_group_vote
),
670 EXT(ARB_shader_image_load_store
),
671 EXT(ARB_shader_image_size
),
672 EXT(ARB_shader_precision
),
673 EXT(ARB_shader_stencil_export
),
674 EXT(ARB_shader_storage_buffer_object
),
675 EXT(ARB_shader_subroutine
),
676 EXT(ARB_shader_texture_image_samples
),
677 EXT(ARB_shader_texture_lod
),
678 EXT(ARB_shader_viewport_layer_array
),
679 EXT(ARB_shading_language_420pack
),
680 EXT(ARB_shading_language_include
),
681 EXT(ARB_shading_language_packing
),
682 EXT(ARB_tessellation_shader
),
683 EXT(ARB_texture_cube_map_array
),
684 EXT(ARB_texture_gather
),
685 EXT(ARB_texture_multisample
),
686 EXT(ARB_texture_query_levels
),
687 EXT(ARB_texture_query_lod
),
688 EXT(ARB_texture_rectangle
),
689 EXT(ARB_uniform_buffer_object
),
690 EXT(ARB_vertex_attrib_64bit
),
691 EXT(ARB_viewport_array
),
693 /* KHR extensions go here, sorted alphabetically.
695 EXT_AEP(KHR_blend_equation_advanced
),
697 /* OES extensions go here, sorted alphabetically.
699 EXT(OES_EGL_image_external
),
700 EXT(OES_EGL_image_external_essl3
),
701 EXT(OES_geometry_point_size
),
702 EXT(OES_geometry_shader
),
703 EXT(OES_gpu_shader5
),
704 EXT(OES_primitive_bounding_box
),
705 EXT_AEP(OES_sample_variables
),
706 EXT_AEP(OES_shader_image_atomic
),
707 EXT(OES_shader_io_blocks
),
708 EXT_AEP(OES_shader_multisample_interpolation
),
709 EXT(OES_standard_derivatives
),
710 EXT(OES_tessellation_point_size
),
711 EXT(OES_tessellation_shader
),
713 EXT(OES_texture_buffer
),
714 EXT(OES_texture_cube_map_array
),
715 EXT_AEP(OES_texture_storage_multisample_2d_array
),
716 EXT(OES_viewport_array
),
718 /* All other extensions go here, sorted alphabetically.
720 EXT(AMD_conservative_depth
),
721 EXT(AMD_gpu_shader_int64
),
722 EXT(AMD_shader_stencil_export
),
723 EXT(AMD_shader_trinary_minmax
),
724 EXT(AMD_texture_texture4
),
725 EXT(AMD_vertex_shader_layer
),
726 EXT(AMD_vertex_shader_viewport_index
),
727 EXT(ANDROID_extension_pack_es31a
),
728 EXT(EXT_blend_func_extended
),
729 EXT(EXT_demote_to_helper_invocation
),
731 EXT(EXT_draw_buffers
),
732 EXT(EXT_draw_instanced
),
733 EXT(EXT_clip_cull_distance
),
734 EXT(EXT_geometry_point_size
),
735 EXT_AEP(EXT_geometry_shader
),
736 EXT(EXT_gpu_shader4
),
737 EXT_AEP(EXT_gpu_shader5
),
738 EXT_AEP(EXT_primitive_bounding_box
),
739 EXT(EXT_separate_shader_objects
),
740 EXT(EXT_shader_framebuffer_fetch
),
741 EXT(EXT_shader_framebuffer_fetch_non_coherent
),
742 EXT(EXT_shader_group_vote
),
743 EXT(EXT_shader_image_load_formatted
),
744 EXT(EXT_shader_image_load_store
),
745 EXT(EXT_shader_implicit_conversions
),
746 EXT(EXT_shader_integer_mix
),
747 EXT_AEP(EXT_shader_io_blocks
),
748 EXT(EXT_shader_samples_identical
),
749 EXT(EXT_tessellation_point_size
),
750 EXT_AEP(EXT_tessellation_shader
),
751 EXT(EXT_texture_array
),
752 EXT_AEP(EXT_texture_buffer
),
753 EXT_AEP(EXT_texture_cube_map_array
),
754 EXT(EXT_texture_query_lod
),
755 EXT(EXT_texture_shadow_lod
),
756 EXT(INTEL_conservative_rasterization
),
757 EXT(INTEL_shader_atomic_float_minmax
),
758 EXT(INTEL_shader_integer_functions2
),
759 EXT(MESA_shader_integer_functions
),
760 EXT(NV_compute_shader_derivatives
),
761 EXT(NV_fragment_shader_interlock
),
762 EXT(NV_image_formats
),
763 EXT(NV_shader_atomic_float
),
764 EXT(NV_viewport_array2
),
771 * Determine whether a given extension is compatible with the target,
772 * API, and extension information in the current parser state.
774 bool _mesa_glsl_extension::compatible_with_state(
775 const _mesa_glsl_parse_state
*state
, gl_api api
, uint8_t gl_version
) const
777 return this->available_pred(state
->ctx
, api
, gl_version
);
781 * Set the appropriate flags in the parser state to establish the
782 * given behavior for this extension.
784 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
785 ext_behavior behavior
) const
787 /* Note: the ->* operator indexes into state by the
788 * offsets this->enable_flag and this->warn_flag. See
789 * _mesa_glsl_extension::supported_flag for more info.
791 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
792 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
796 * Find an extension by name in _mesa_glsl_supported_extensions. If
797 * the name is not found, return NULL.
799 static const _mesa_glsl_extension
*find_extension(const char *name
)
801 for (unsigned i
= 0; i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
802 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
803 return &_mesa_glsl_supported_extensions
[i
];
810 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
811 const char *behavior_string
, YYLTYPE
*behavior_locp
,
812 _mesa_glsl_parse_state
*state
)
814 uint8_t gl_version
= state
->ctx
->Extensions
.Version
;
815 gl_api api
= state
->ctx
->API
;
816 ext_behavior behavior
;
817 if (strcmp(behavior_string
, "warn") == 0) {
818 behavior
= extension_warn
;
819 } else if (strcmp(behavior_string
, "require") == 0) {
820 behavior
= extension_require
;
821 } else if (strcmp(behavior_string
, "enable") == 0) {
822 behavior
= extension_enable
;
823 } else if (strcmp(behavior_string
, "disable") == 0) {
824 behavior
= extension_disable
;
826 _mesa_glsl_error(behavior_locp
, state
,
827 "unknown extension behavior `%s'",
832 /* If we're in a desktop context but with an ES shader, use an ES API enum
833 * to verify extension availability.
835 if (state
->es_shader
&& api
!= API_OPENGLES2
)
837 /* Use the language-version derived GL version to extension checks, unless
838 * we're using meta, which sets the version to the max.
840 if (gl_version
!= 0xff)
841 gl_version
= state
->gl_version
;
843 if (strcmp(name
, "all") == 0) {
844 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
845 _mesa_glsl_error(name_locp
, state
, "cannot %s all extensions",
846 (behavior
== extension_enable
)
847 ? "enable" : "require");
851 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
852 const _mesa_glsl_extension
*extension
853 = &_mesa_glsl_supported_extensions
[i
];
854 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
855 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
860 const _mesa_glsl_extension
*extension
= find_extension(name
);
861 if (extension
&& extension
->compatible_with_state(state
, api
, gl_version
)) {
862 extension
->set_flags(state
, behavior
);
863 if (extension
->available_pred
== has_ANDROID_extension_pack_es31a
) {
865 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
866 const _mesa_glsl_extension
*extension
=
867 &_mesa_glsl_supported_extensions
[i
];
871 /* AEP should not be enabled if all of the sub-extensions can't
872 * also be enabled. This is not the proper layer to do such
873 * error-checking though.
875 assert(extension
->compatible_with_state(state
, api
, gl_version
));
876 extension
->set_flags(state
, behavior
);
880 static const char fmt
[] = "extension `%s' unsupported in %s shader";
882 if (behavior
== extension_require
) {
883 _mesa_glsl_error(name_locp
, state
, fmt
,
884 name
, _mesa_shader_stage_to_string(state
->stage
));
887 _mesa_glsl_warning(name_locp
, state
, fmt
,
888 name
, _mesa_shader_stage_to_string(state
->stage
));
898 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
899 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
900 * (process_array_constructor, et al) sufficient information to do type
903 * Operates on assignments involving an aggregate initializer. E.g.,
905 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
907 * or more ridiculously,
920 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
921 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
926 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
927 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
933 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
934 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
940 * This pass is necessary because the right-hand side of <type> e = { ... }
941 * doesn't contain sufficient information to determine if the types match.
944 _mesa_ast_set_aggregate_type(const glsl_type
*type
,
945 ast_expression
*expr
)
947 ast_aggregate_initializer
*ai
= (ast_aggregate_initializer
*)expr
;
948 ai
->constructor_type
= type
;
950 /* If the aggregate is an array, recursively set its elements' types. */
951 if (type
->is_array()) {
952 /* Each array element has the type type->fields.array.
954 * E.g., if <type> if struct S[2] we want to set each element's type to
957 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
958 !expr_node
->is_tail_sentinel();
959 expr_node
= expr_node
->next
) {
960 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
963 if (expr
->oper
== ast_aggregate
)
964 _mesa_ast_set_aggregate_type(type
->fields
.array
, expr
);
967 /* If the aggregate is a struct, recursively set its fields' types. */
968 } else if (type
->is_struct()) {
969 exec_node
*expr_node
= ai
->expressions
.get_head_raw();
971 /* Iterate through the struct's fields. */
972 for (unsigned i
= 0; !expr_node
->is_tail_sentinel() && i
< type
->length
;
973 i
++, expr_node
= expr_node
->next
) {
974 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
977 if (expr
->oper
== ast_aggregate
) {
978 _mesa_ast_set_aggregate_type(type
->fields
.structure
[i
].type
, expr
);
981 /* If the aggregate is a matrix, set its columns' types. */
982 } else if (type
->is_matrix()) {
983 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
984 !expr_node
->is_tail_sentinel();
985 expr_node
= expr_node
->next
) {
986 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
989 if (expr
->oper
== ast_aggregate
)
990 _mesa_ast_set_aggregate_type(type
->column_type(), expr
);
996 _mesa_ast_process_interface_block(YYLTYPE
*locp
,
997 _mesa_glsl_parse_state
*state
,
998 ast_interface_block
*const block
,
999 const struct ast_type_qualifier
&q
)
1001 if (q
.flags
.q
.buffer
) {
1002 if (!state
->has_shader_storage_buffer_objects()) {
1003 _mesa_glsl_error(locp
, state
,
1004 "#version 430 / GL_ARB_shader_storage_buffer_object "
1005 "required for defining shader storage blocks");
1006 } else if (state
->ARB_shader_storage_buffer_object_warn
) {
1007 _mesa_glsl_warning(locp
, state
,
1008 "#version 430 / GL_ARB_shader_storage_buffer_object "
1009 "required for defining shader storage blocks");
1011 } else if (q
.flags
.q
.uniform
) {
1012 if (!state
->has_uniform_buffer_objects()) {
1013 _mesa_glsl_error(locp
, state
,
1014 "#version 140 / GL_ARB_uniform_buffer_object "
1015 "required for defining uniform blocks");
1016 } else if (state
->ARB_uniform_buffer_object_warn
) {
1017 _mesa_glsl_warning(locp
, state
,
1018 "#version 140 / GL_ARB_uniform_buffer_object "
1019 "required for defining uniform blocks");
1022 if (!state
->has_shader_io_blocks()) {
1023 if (state
->es_shader
) {
1024 _mesa_glsl_error(locp
, state
,
1025 "GL_OES_shader_io_blocks or #version 320 "
1026 "required for using interface blocks");
1028 _mesa_glsl_error(locp
, state
,
1029 "#version 150 required for using "
1030 "interface blocks");
1035 /* From the GLSL 1.50.11 spec, section 4.3.7 ("Interface Blocks"):
1036 * "It is illegal to have an input block in a vertex shader
1037 * or an output block in a fragment shader"
1039 if ((state
->stage
== MESA_SHADER_VERTEX
) && q
.flags
.q
.in
) {
1040 _mesa_glsl_error(locp
, state
,
1041 "`in' interface block is not allowed for "
1043 } else if ((state
->stage
== MESA_SHADER_FRAGMENT
) && q
.flags
.q
.out
) {
1044 _mesa_glsl_error(locp
, state
,
1045 "`out' interface block is not allowed for "
1046 "a fragment shader");
1049 /* Since block arrays require names, and both features are added in
1050 * the same language versions, we don't have to explicitly
1051 * version-check both things.
1053 if (block
->instance_name
!= NULL
) {
1054 state
->check_version(150, 300, locp
, "interface blocks with "
1055 "an instance name are not allowed");
1058 ast_type_qualifier::bitset_t interface_type_mask
;
1059 struct ast_type_qualifier temp_type_qualifier
;
1061 /* Get a bitmask containing only the in/out/uniform/buffer
1062 * flags, allowing us to ignore other irrelevant flags like
1063 * interpolation qualifiers.
1065 temp_type_qualifier
.flags
.i
= 0;
1066 temp_type_qualifier
.flags
.q
.uniform
= true;
1067 temp_type_qualifier
.flags
.q
.in
= true;
1068 temp_type_qualifier
.flags
.q
.out
= true;
1069 temp_type_qualifier
.flags
.q
.buffer
= true;
1070 temp_type_qualifier
.flags
.q
.patch
= true;
1071 interface_type_mask
= temp_type_qualifier
.flags
.i
;
1073 /* Get the block's interface qualifier. The interface_qualifier
1074 * production rule guarantees that only one bit will be set (and
1075 * it will be in/out/uniform).
1077 ast_type_qualifier::bitset_t block_interface_qualifier
= q
.flags
.i
;
1079 block
->default_layout
.flags
.i
|= block_interface_qualifier
;
1081 if (state
->stage
== MESA_SHADER_GEOMETRY
&&
1082 state
->has_explicit_attrib_stream() &&
1083 block
->default_layout
.flags
.q
.out
) {
1084 /* Assign global layout's stream value. */
1085 block
->default_layout
.flags
.q
.stream
= 1;
1086 block
->default_layout
.flags
.q
.explicit_stream
= 0;
1087 block
->default_layout
.stream
= state
->out_qualifier
->stream
;
1090 if (state
->has_enhanced_layouts() && block
->default_layout
.flags
.q
.out
) {
1091 /* Assign global layout's xfb_buffer value. */
1092 block
->default_layout
.flags
.q
.xfb_buffer
= 1;
1093 block
->default_layout
.flags
.q
.explicit_xfb_buffer
= 0;
1094 block
->default_layout
.xfb_buffer
= state
->out_qualifier
->xfb_buffer
;
1097 foreach_list_typed (ast_declarator_list
, member
, link
, &block
->declarations
) {
1098 ast_type_qualifier
& qualifier
= member
->type
->qualifier
;
1099 if ((qualifier
.flags
.i
& interface_type_mask
) == 0) {
1100 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1101 * "If no optional qualifier is used in a member declaration, the
1102 * qualifier of the variable is just in, out, or uniform as declared
1103 * by interface-qualifier."
1105 qualifier
.flags
.i
|= block_interface_qualifier
;
1106 } else if ((qualifier
.flags
.i
& interface_type_mask
) !=
1107 block_interface_qualifier
) {
1108 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1109 * "If optional qualifiers are used, they can include interpolation
1110 * and storage qualifiers and they must declare an input, output,
1111 * or uniform variable consistent with the interface qualifier of
1114 _mesa_glsl_error(locp
, state
,
1115 "uniform/in/out qualifier on "
1116 "interface block member does not match "
1117 "the interface block");
1120 if (!(q
.flags
.q
.in
|| q
.flags
.q
.out
) && qualifier
.flags
.q
.invariant
)
1121 _mesa_glsl_error(locp
, state
,
1122 "invariant qualifiers can be used only "
1123 "in interface block members for shader "
1124 "inputs or outputs");
1129 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
1131 if (q
->is_subroutine_decl())
1132 printf("subroutine ");
1134 if (q
->subroutine_list
) {
1135 printf("subroutine (");
1136 q
->subroutine_list
->print();
1140 if (q
->flags
.q
.constant
)
1143 if (q
->flags
.q
.invariant
)
1144 printf("invariant ");
1146 if (q
->flags
.q
.attribute
)
1147 printf("attribute ");
1149 if (q
->flags
.q
.varying
)
1152 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
1162 if (q
->flags
.q
.centroid
)
1163 printf("centroid ");
1164 if (q
->flags
.q
.sample
)
1166 if (q
->flags
.q
.patch
)
1168 if (q
->flags
.q
.uniform
)
1170 if (q
->flags
.q
.buffer
)
1172 if (q
->flags
.q
.smooth
)
1174 if (q
->flags
.q
.flat
)
1176 if (q
->flags
.q
.noperspective
)
1177 printf("noperspective ");
1182 ast_node::print(void) const
1184 printf("unhandled node ");
1188 ast_node::ast_node(void)
1190 this->location
.source
= 0;
1191 this->location
.first_line
= 0;
1192 this->location
.first_column
= 0;
1193 this->location
.last_line
= 0;
1194 this->location
.last_column
= 0;
1199 ast_opt_array_dimensions_print(const ast_array_specifier
*array_specifier
)
1201 if (array_specifier
)
1202 array_specifier
->print();
1207 ast_compound_statement::print(void) const
1211 foreach_list_typed(ast_node
, ast
, link
, &this->statements
) {
1219 ast_compound_statement::ast_compound_statement(int new_scope
,
1220 ast_node
*statements
)
1222 this->new_scope
= new_scope
;
1224 if (statements
!= NULL
) {
1225 this->statements
.push_degenerate_list_at_head(&statements
->link
);
1231 ast_expression::print(void) const
1235 case ast_mul_assign
:
1236 case ast_div_assign
:
1237 case ast_mod_assign
:
1238 case ast_add_assign
:
1239 case ast_sub_assign
:
1242 case ast_and_assign
:
1243 case ast_xor_assign
:
1245 subexpressions
[0]->print();
1246 printf("%s ", operator_string(oper
));
1247 subexpressions
[1]->print();
1250 case ast_field_selection
:
1251 subexpressions
[0]->print();
1252 printf(". %s ", primary_expression
.identifier
);
1261 printf("%s ", operator_string(oper
));
1262 subexpressions
[0]->print();
1267 subexpressions
[0]->print();
1268 printf("%s ", operator_string(oper
));
1271 case ast_conditional
:
1272 subexpressions
[0]->print();
1274 subexpressions
[1]->print();
1276 subexpressions
[2]->print();
1279 case ast_array_index
:
1280 subexpressions
[0]->print();
1282 subexpressions
[1]->print();
1286 case ast_function_call
: {
1287 subexpressions
[0]->print();
1290 foreach_list_typed (ast_node
, ast
, link
, &this->expressions
) {
1291 if (&ast
->link
!= this->expressions
.get_head())
1301 case ast_identifier
:
1302 printf("%s ", primary_expression
.identifier
);
1305 case ast_int_constant
:
1306 printf("%d ", primary_expression
.int_constant
);
1309 case ast_uint_constant
:
1310 printf("%u ", primary_expression
.uint_constant
);
1313 case ast_float_constant
:
1314 printf("%f ", primary_expression
.float_constant
);
1317 case ast_double_constant
:
1318 printf("%f ", primary_expression
.double_constant
);
1321 case ast_int64_constant
:
1322 printf("%" PRId64
" ", primary_expression
.int64_constant
);
1325 case ast_uint64_constant
:
1326 printf("%" PRIu64
" ", primary_expression
.uint64_constant
);
1329 case ast_bool_constant
:
1331 primary_expression
.bool_constant
1332 ? "true" : "false");
1335 case ast_sequence
: {
1337 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1338 if (&ast
->link
!= this->expressions
.get_head())
1347 case ast_aggregate
: {
1349 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1350 if (&ast
->link
!= this->expressions
.get_head())
1365 ast_expression::ast_expression(int oper
,
1366 ast_expression
*ex0
,
1367 ast_expression
*ex1
,
1368 ast_expression
*ex2
) :
1369 primary_expression()
1371 this->oper
= ast_operators(oper
);
1372 this->subexpressions
[0] = ex0
;
1373 this->subexpressions
[1] = ex1
;
1374 this->subexpressions
[2] = ex2
;
1375 this->non_lvalue_description
= NULL
;
1376 this->is_lhs
= false;
1381 ast_expression_statement::print(void) const
1384 expression
->print();
1390 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
1398 ast_function::print(void) const
1400 return_type
->print();
1401 printf(" %s (", identifier
);
1403 foreach_list_typed(ast_node
, ast
, link
, & this->parameters
) {
1411 ast_function::ast_function(void)
1412 : return_type(NULL
), identifier(NULL
), is_definition(false),
1420 ast_fully_specified_type::print(void) const
1422 _mesa_ast_type_qualifier_print(& qualifier
);
1428 ast_parameter_declarator::print(void) const
1432 printf("%s ", identifier
);
1433 ast_opt_array_dimensions_print(array_specifier
);
1438 ast_function_definition::print(void) const
1446 ast_declaration::print(void) const
1448 printf("%s ", identifier
);
1449 ast_opt_array_dimensions_print(array_specifier
);
1453 initializer
->print();
1458 ast_declaration::ast_declaration(const char *identifier
,
1459 ast_array_specifier
*array_specifier
,
1460 ast_expression
*initializer
)
1462 this->identifier
= identifier
;
1463 this->array_specifier
= array_specifier
;
1464 this->initializer
= initializer
;
1469 ast_declarator_list::print(void) const
1471 assert(type
|| invariant
);
1476 printf("invariant ");
1480 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1481 if (&ast
->link
!= this->declarations
.get_head())
1491 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
1494 this->invariant
= false;
1495 this->precise
= false;
1499 ast_jump_statement::print(void) const
1503 printf("continue; ");
1510 if (opt_return_value
)
1511 opt_return_value
->print();
1516 printf("discard; ");
1522 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
1523 : opt_return_value(NULL
)
1525 this->mode
= ast_jump_modes(mode
);
1527 if (mode
== ast_return
)
1528 opt_return_value
= return_value
;
1533 ast_demote_statement::print(void) const
1540 ast_selection_statement::print(void) const
1546 then_statement
->print();
1548 if (else_statement
) {
1550 else_statement
->print();
1555 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
1556 ast_node
*then_statement
,
1557 ast_node
*else_statement
)
1559 this->condition
= condition
;
1560 this->then_statement
= then_statement
;
1561 this->else_statement
= else_statement
;
1566 ast_switch_statement::print(void) const
1568 printf("switch ( ");
1569 test_expression
->print();
1576 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
1579 this->test_expression
= test_expression
;
1585 ast_switch_body::print(void) const
1588 if (stmts
!= NULL
) {
1595 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
1597 this->stmts
= stmts
;
1601 void ast_case_label::print(void) const
1603 if (test_value
!= NULL
) {
1605 test_value
->print();
1608 printf("default: ");
1613 ast_case_label::ast_case_label(ast_expression
*test_value
)
1615 this->test_value
= test_value
;
1619 void ast_case_label_list::print(void) const
1621 foreach_list_typed(ast_node
, ast
, link
, & this->labels
) {
1628 ast_case_label_list::ast_case_label_list(void)
1633 void ast_case_statement::print(void) const
1636 foreach_list_typed(ast_node
, ast
, link
, & this->stmts
) {
1643 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
1645 this->labels
= labels
;
1649 void ast_case_statement_list::print(void) const
1651 foreach_list_typed(ast_node
, ast
, link
, & this->cases
) {
1657 ast_case_statement_list::ast_case_statement_list(void)
1663 ast_iteration_statement::print(void) const
1669 init_statement
->print();
1676 if (rest_expression
)
1677 rest_expression
->print();
1703 ast_iteration_statement::ast_iteration_statement(int mode
,
1705 ast_node
*condition
,
1706 ast_expression
*rest_expression
,
1709 this->mode
= ast_iteration_modes(mode
);
1710 this->init_statement
= init
;
1711 this->condition
= condition
;
1712 this->rest_expression
= rest_expression
;
1718 ast_struct_specifier::print(void) const
1720 printf("struct %s { ", name
);
1721 foreach_list_typed(ast_node
, ast
, link
, &this->declarations
) {
1728 ast_struct_specifier::ast_struct_specifier(const char *identifier
,
1729 ast_declarator_list
*declarator_list
)
1730 : name(identifier
), layout(NULL
), declarations(), is_declaration(true),
1733 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1736 void ast_subroutine_list::print(void) const
1738 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1739 if (&ast
->link
!= this->declarations
.get_head())
1746 set_shader_inout_layout(struct gl_shader
*shader
,
1747 struct _mesa_glsl_parse_state
*state
)
1749 /* Should have been prevented by the parser. */
1750 if (shader
->Stage
!= MESA_SHADER_GEOMETRY
&&
1751 shader
->Stage
!= MESA_SHADER_TESS_EVAL
&&
1752 shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1753 assert(!state
->in_qualifier
->flags
.i
);
1756 if (shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1757 /* Should have been prevented by the parser. */
1758 assert(!state
->cs_input_local_size_specified
);
1759 assert(!state
->cs_input_local_size_variable_specified
);
1760 assert(state
->cs_derivative_group
== DERIVATIVE_GROUP_NONE
);
1763 if (shader
->Stage
!= MESA_SHADER_FRAGMENT
) {
1764 /* Should have been prevented by the parser. */
1765 assert(!state
->fs_uses_gl_fragcoord
);
1766 assert(!state
->fs_redeclares_gl_fragcoord
);
1767 assert(!state
->fs_pixel_center_integer
);
1768 assert(!state
->fs_origin_upper_left
);
1769 assert(!state
->fs_early_fragment_tests
);
1770 assert(!state
->fs_inner_coverage
);
1771 assert(!state
->fs_post_depth_coverage
);
1772 assert(!state
->fs_pixel_interlock_ordered
);
1773 assert(!state
->fs_pixel_interlock_unordered
);
1774 assert(!state
->fs_sample_interlock_ordered
);
1775 assert(!state
->fs_sample_interlock_unordered
);
1778 for (unsigned i
= 0; i
< MAX_FEEDBACK_BUFFERS
; i
++) {
1779 if (state
->out_qualifier
->out_xfb_stride
[i
]) {
1780 unsigned xfb_stride
;
1781 if (state
->out_qualifier
->out_xfb_stride
[i
]->
1782 process_qualifier_constant(state
, "xfb_stride", &xfb_stride
,
1784 shader
->TransformFeedbackBufferStride
[i
] = xfb_stride
;
1789 switch (shader
->Stage
) {
1790 case MESA_SHADER_TESS_CTRL
:
1791 shader
->info
.TessCtrl
.VerticesOut
= 0;
1792 if (state
->tcs_output_vertices_specified
) {
1794 if (state
->out_qualifier
->vertices
->
1795 process_qualifier_constant(state
, "vertices", &vertices
,
1798 YYLTYPE loc
= state
->out_qualifier
->vertices
->get_location();
1799 if (vertices
> state
->Const
.MaxPatchVertices
) {
1800 _mesa_glsl_error(&loc
, state
, "vertices (%d) exceeds "
1801 "GL_MAX_PATCH_VERTICES", vertices
);
1803 shader
->info
.TessCtrl
.VerticesOut
= vertices
;
1807 case MESA_SHADER_TESS_EVAL
:
1808 shader
->info
.TessEval
.PrimitiveMode
= PRIM_UNKNOWN
;
1809 if (state
->in_qualifier
->flags
.q
.prim_type
)
1810 shader
->info
.TessEval
.PrimitiveMode
= state
->in_qualifier
->prim_type
;
1812 shader
->info
.TessEval
.Spacing
= TESS_SPACING_UNSPECIFIED
;
1813 if (state
->in_qualifier
->flags
.q
.vertex_spacing
)
1814 shader
->info
.TessEval
.Spacing
= state
->in_qualifier
->vertex_spacing
;
1816 shader
->info
.TessEval
.VertexOrder
= 0;
1817 if (state
->in_qualifier
->flags
.q
.ordering
)
1818 shader
->info
.TessEval
.VertexOrder
= state
->in_qualifier
->ordering
;
1820 shader
->info
.TessEval
.PointMode
= -1;
1821 if (state
->in_qualifier
->flags
.q
.point_mode
)
1822 shader
->info
.TessEval
.PointMode
= state
->in_qualifier
->point_mode
;
1824 case MESA_SHADER_GEOMETRY
:
1825 shader
->info
.Geom
.VerticesOut
= -1;
1826 if (state
->out_qualifier
->flags
.q
.max_vertices
) {
1827 unsigned qual_max_vertices
;
1828 if (state
->out_qualifier
->max_vertices
->
1829 process_qualifier_constant(state
, "max_vertices",
1830 &qual_max_vertices
, true)) {
1832 if (qual_max_vertices
> state
->Const
.MaxGeometryOutputVertices
) {
1833 YYLTYPE loc
= state
->out_qualifier
->max_vertices
->get_location();
1834 _mesa_glsl_error(&loc
, state
,
1835 "maximum output vertices (%d) exceeds "
1836 "GL_MAX_GEOMETRY_OUTPUT_VERTICES",
1839 shader
->info
.Geom
.VerticesOut
= qual_max_vertices
;
1843 if (state
->gs_input_prim_type_specified
) {
1844 shader
->info
.Geom
.InputType
= state
->in_qualifier
->prim_type
;
1846 shader
->info
.Geom
.InputType
= PRIM_UNKNOWN
;
1849 if (state
->out_qualifier
->flags
.q
.prim_type
) {
1850 shader
->info
.Geom
.OutputType
= state
->out_qualifier
->prim_type
;
1852 shader
->info
.Geom
.OutputType
= PRIM_UNKNOWN
;
1855 shader
->info
.Geom
.Invocations
= 0;
1856 if (state
->in_qualifier
->flags
.q
.invocations
) {
1857 unsigned invocations
;
1858 if (state
->in_qualifier
->invocations
->
1859 process_qualifier_constant(state
, "invocations",
1860 &invocations
, false)) {
1862 YYLTYPE loc
= state
->in_qualifier
->invocations
->get_location();
1863 if (invocations
> state
->Const
.MaxGeometryShaderInvocations
) {
1864 _mesa_glsl_error(&loc
, state
,
1865 "invocations (%d) exceeds "
1866 "GL_MAX_GEOMETRY_SHADER_INVOCATIONS",
1869 shader
->info
.Geom
.Invocations
= invocations
;
1874 case MESA_SHADER_COMPUTE
:
1875 if (state
->cs_input_local_size_specified
) {
1876 for (int i
= 0; i
< 3; i
++)
1877 shader
->info
.Comp
.LocalSize
[i
] = state
->cs_input_local_size
[i
];
1879 for (int i
= 0; i
< 3; i
++)
1880 shader
->info
.Comp
.LocalSize
[i
] = 0;
1883 shader
->info
.Comp
.LocalSizeVariable
=
1884 state
->cs_input_local_size_variable_specified
;
1886 shader
->info
.Comp
.DerivativeGroup
= state
->cs_derivative_group
;
1888 if (state
->NV_compute_shader_derivatives_enable
) {
1889 /* We allow multiple cs_input_layout nodes, but do not store them in
1890 * a convenient place, so for now live with an empty location error.
1893 if (shader
->info
.Comp
.DerivativeGroup
== DERIVATIVE_GROUP_QUADS
) {
1894 if (shader
->info
.Comp
.LocalSize
[0] % 2 != 0) {
1895 _mesa_glsl_error(&loc
, state
, "derivative_group_quadsNV must be used with a "
1896 "local group size whose first dimension "
1897 "is a multiple of 2\n");
1899 if (shader
->info
.Comp
.LocalSize
[1] % 2 != 0) {
1900 _mesa_glsl_error(&loc
, state
, "derivative_group_quadsNV must be used with a "
1901 "local group size whose second dimension "
1902 "is a multiple of 2\n");
1904 } else if (shader
->info
.Comp
.DerivativeGroup
== DERIVATIVE_GROUP_LINEAR
) {
1905 if ((shader
->info
.Comp
.LocalSize
[0] *
1906 shader
->info
.Comp
.LocalSize
[1] *
1907 shader
->info
.Comp
.LocalSize
[2]) % 4 != 0) {
1908 _mesa_glsl_error(&loc
, state
, "derivative_group_linearNV must be used with a "
1909 "local group size whose total number of invocations "
1910 "is a multiple of 4\n");
1917 case MESA_SHADER_FRAGMENT
:
1918 shader
->redeclares_gl_fragcoord
= state
->fs_redeclares_gl_fragcoord
;
1919 shader
->uses_gl_fragcoord
= state
->fs_uses_gl_fragcoord
;
1920 shader
->pixel_center_integer
= state
->fs_pixel_center_integer
;
1921 shader
->origin_upper_left
= state
->fs_origin_upper_left
;
1922 shader
->ARB_fragment_coord_conventions_enable
=
1923 state
->ARB_fragment_coord_conventions_enable
;
1924 shader
->EarlyFragmentTests
= state
->fs_early_fragment_tests
;
1925 shader
->InnerCoverage
= state
->fs_inner_coverage
;
1926 shader
->PostDepthCoverage
= state
->fs_post_depth_coverage
;
1927 shader
->PixelInterlockOrdered
= state
->fs_pixel_interlock_ordered
;
1928 shader
->PixelInterlockUnordered
= state
->fs_pixel_interlock_unordered
;
1929 shader
->SampleInterlockOrdered
= state
->fs_sample_interlock_ordered
;
1930 shader
->SampleInterlockUnordered
= state
->fs_sample_interlock_unordered
;
1931 shader
->BlendSupport
= state
->fs_blend_support
;
1935 /* Nothing to do. */
1939 shader
->bindless_sampler
= state
->bindless_sampler_specified
;
1940 shader
->bindless_image
= state
->bindless_image_specified
;
1941 shader
->bound_sampler
= state
->bound_sampler_specified
;
1942 shader
->bound_image
= state
->bound_image_specified
;
1943 shader
->redeclares_gl_layer
= state
->redeclares_gl_layer
;
1944 shader
->layer_viewport_relative
= state
->layer_viewport_relative
;
1947 /* src can be NULL if only the symbols found in the exec_list should be
1951 _mesa_glsl_copy_symbols_from_table(struct exec_list
*shader_ir
,
1952 struct glsl_symbol_table
*src
,
1953 struct glsl_symbol_table
*dest
)
1955 foreach_in_list (ir_instruction
, ir
, shader_ir
) {
1956 switch (ir
->ir_type
) {
1957 case ir_type_function
:
1958 dest
->add_function((ir_function
*) ir
);
1960 case ir_type_variable
: {
1961 ir_variable
*const var
= (ir_variable
*) ir
;
1963 if (var
->data
.mode
!= ir_var_temporary
)
1964 dest
->add_variable(var
);
1973 /* Explicitly copy the gl_PerVertex interface definitions because these
1974 * are needed to check they are the same during the interstage link.
1975 * They can’t necessarily be found via the exec_list because the members
1976 * might not be referenced. The GL spec still requires that they match
1979 const glsl_type
*iface
=
1980 src
->get_interface("gl_PerVertex", ir_var_shader_in
);
1982 dest
->add_interface(iface
->name
, iface
, ir_var_shader_in
);
1984 iface
= src
->get_interface("gl_PerVertex", ir_var_shader_out
);
1986 dest
->add_interface(iface
->name
, iface
, ir_var_shader_out
);
1993 assign_subroutine_indexes(struct _mesa_glsl_parse_state
*state
)
1998 for (j
= 0; j
< state
->num_subroutines
; j
++) {
1999 while (state
->subroutines
[j
]->subroutine_index
== -1) {
2000 for (k
= 0; k
< state
->num_subroutines
; k
++) {
2001 if (state
->subroutines
[k
]->subroutine_index
== index
)
2003 else if (k
== state
->num_subroutines
- 1) {
2004 state
->subroutines
[j
]->subroutine_index
= index
;
2013 add_builtin_defines(struct _mesa_glsl_parse_state
*state
,
2014 void (*add_builtin_define
)(struct glcpp_parser
*, const char *, int),
2015 struct glcpp_parser
*data
,
2019 unsigned gl_version
= state
->ctx
->Extensions
.Version
;
2020 gl_api api
= state
->ctx
->API
;
2022 if (gl_version
!= 0xff) {
2024 for (i
= 0; i
< state
->num_supported_versions
; i
++) {
2025 if (state
->supported_versions
[i
].ver
== version
&&
2026 state
->supported_versions
[i
].es
== es
) {
2027 gl_version
= state
->supported_versions
[i
].gl_ver
;
2032 if (i
== state
->num_supported_versions
)
2037 api
= API_OPENGLES2
;
2039 for (unsigned i
= 0;
2040 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
2041 const _mesa_glsl_extension
*extension
2042 = &_mesa_glsl_supported_extensions
[i
];
2043 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
2044 add_builtin_define(data
, extension
->name
, 1);
2049 /* Implements parsing checks that we can't do during parsing */
2051 do_late_parsing_checks(struct _mesa_glsl_parse_state
*state
)
2053 if (state
->stage
== MESA_SHADER_COMPUTE
&& !state
->has_compute_shader()) {
2055 memset(&loc
, 0, sizeof(loc
));
2056 _mesa_glsl_error(&loc
, state
, "Compute shaders require "
2057 "GLSL 4.30 or GLSL ES 3.10");
2062 opt_shader_and_create_symbol_table(struct gl_context
*ctx
,
2063 struct glsl_symbol_table
*source_symbols
,
2064 struct gl_shader
*shader
)
2066 assert(shader
->CompileStatus
!= COMPILE_FAILURE
&&
2067 !shader
->ir
->is_empty());
2069 struct gl_shader_compiler_options
*options
=
2070 &ctx
->Const
.ShaderCompilerOptions
[shader
->Stage
];
2072 /* Do some optimization at compile time to reduce shader IR size
2073 * and reduce later work if the same shader is linked multiple times
2075 if (ctx
->Const
.GLSLOptimizeConservatively
) {
2076 /* Run it just once. */
2077 do_common_optimization(shader
->ir
, false, false, options
,
2078 ctx
->Const
.NativeIntegers
);
2080 /* Repeat it until it stops making changes. */
2081 while (do_common_optimization(shader
->ir
, false, false, options
,
2082 ctx
->Const
.NativeIntegers
))
2086 validate_ir_tree(shader
->ir
);
2088 enum ir_variable_mode other
;
2089 switch (shader
->Stage
) {
2090 case MESA_SHADER_VERTEX
:
2091 other
= ir_var_shader_in
;
2093 case MESA_SHADER_FRAGMENT
:
2094 other
= ir_var_shader_out
;
2097 /* Something invalid to ensure optimize_dead_builtin_uniforms
2098 * doesn't remove anything other than uniforms or constants.
2100 other
= ir_var_mode_count
;
2104 optimize_dead_builtin_variables(shader
->ir
, other
);
2106 validate_ir_tree(shader
->ir
);
2108 /* Retain any live IR, but trash the rest. */
2109 reparent_ir(shader
->ir
, shader
->ir
);
2111 /* Destroy the symbol table. Create a new symbol table that contains only
2112 * the variables and functions that still exist in the IR. The symbol
2113 * table will be used later during linking.
2115 * There must NOT be any freed objects still referenced by the symbol
2116 * table. That could cause the linker to dereference freed memory.
2118 * We don't have to worry about types or interface-types here because those
2119 * are fly-weights that are looked up by glsl_type.
2121 _mesa_glsl_copy_symbols_from_table(shader
->ir
, source_symbols
,
2126 can_skip_compile(struct gl_context
*ctx
, struct gl_shader
*shader
,
2127 const char *source
, bool force_recompile
,
2128 bool source_has_shader_include
)
2130 if (!force_recompile
) {
2133 disk_cache_compute_key(ctx
->Cache
, source
, strlen(source
),
2135 if (disk_cache_has_key(ctx
->Cache
, shader
->sha1
)) {
2136 /* We've seen this shader before and know it compiles */
2137 if (ctx
->_Shader
->Flags
& GLSL_CACHE_INFO
) {
2138 _mesa_sha1_format(buf
, shader
->sha1
);
2139 fprintf(stderr
, "deferring compile of shader: %s\n", buf
);
2141 shader
->CompileStatus
= COMPILE_SKIPPED
;
2143 free((void *)shader
->FallbackSource
);
2145 /* Copy pre-processed shader include to fallback source otherwise
2146 * we have no guarantee the shader include source tree has not
2149 shader
->FallbackSource
= source_has_shader_include
?
2150 strdup(source
) : NULL
;
2155 /* We should only ever end up here if a re-compile has been forced by a
2156 * shader cache miss. In which case we can skip the compile if its
2157 * already been done by a previous fallback or the initial compile call.
2159 if (shader
->CompileStatus
== COMPILE_SUCCESS
)
2167 _mesa_glsl_compile_shader(struct gl_context
*ctx
, struct gl_shader
*shader
,
2168 bool dump_ast
, bool dump_hir
, bool force_recompile
)
2170 const char *source
= force_recompile
&& shader
->FallbackSource
?
2171 shader
->FallbackSource
: shader
->Source
;
2173 /* Note this will be true for shaders the have #include inside comments
2174 * however that should be rare enough not to worry about.
2176 bool source_has_shader_include
=
2177 strstr(source
, "#include") == NULL
? false : true;
2179 /* If there was no shader include we can check the shader cache and skip
2180 * compilation before we run the preprocessor. We never skip compiling
2181 * shaders that use ARB_shading_language_include because we would need to
2182 * keep duplicate copies of the shader include source tree and paths.
2184 if (!source_has_shader_include
&&
2185 can_skip_compile(ctx
, shader
, source
, force_recompile
, false))
2188 struct _mesa_glsl_parse_state
*state
=
2189 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Stage
, shader
);
2191 if (ctx
->Const
.GenerateTemporaryNames
)
2192 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names
,
2195 if (!source_has_shader_include
|| !force_recompile
) {
2196 state
->error
= glcpp_preprocess(state
, &source
, &state
->info_log
,
2197 add_builtin_defines
, state
, ctx
);
2200 /* Now that we have run the preprocessor we can check the shader cache and
2201 * skip compilation if possible for those shaders that contained a shader
2204 if (source_has_shader_include
&&
2205 can_skip_compile(ctx
, shader
, source
, force_recompile
, true))
2208 if (!state
->error
) {
2209 _mesa_glsl_lexer_ctor(state
, source
);
2210 _mesa_glsl_parse(state
);
2211 _mesa_glsl_lexer_dtor(state
);
2212 do_late_parsing_checks(state
);
2216 foreach_list_typed(ast_node
, ast
, link
, &state
->translation_unit
) {
2222 ralloc_free(shader
->ir
);
2223 shader
->ir
= new(shader
) exec_list
;
2224 if (!state
->error
&& !state
->translation_unit
.is_empty())
2225 _mesa_ast_to_hir(shader
->ir
, state
);
2227 if (!state
->error
) {
2228 validate_ir_tree(shader
->ir
);
2230 /* Print out the unoptimized IR. */
2232 _mesa_print_ir(stdout
, shader
->ir
, state
);
2236 if (shader
->InfoLog
)
2237 ralloc_free(shader
->InfoLog
);
2240 set_shader_inout_layout(shader
, state
);
2242 shader
->symbols
= new(shader
->ir
) glsl_symbol_table
;
2243 shader
->CompileStatus
= state
->error
? COMPILE_FAILURE
: COMPILE_SUCCESS
;
2244 shader
->InfoLog
= state
->info_log
;
2245 shader
->Version
= state
->language_version
;
2246 shader
->IsES
= state
->es_shader
;
2248 struct gl_shader_compiler_options
*options
=
2249 &ctx
->Const
.ShaderCompilerOptions
[shader
->Stage
];
2251 if (!state
->error
&& !shader
->ir
->is_empty()) {
2252 if (state
->es_shader
&&
2253 (options
->LowerPrecisionFloat16
|| options
->LowerPrecisionInt16
))
2254 lower_precision(options
, shader
->ir
);
2255 lower_builtins(shader
->ir
);
2256 assign_subroutine_indexes(state
);
2257 lower_subroutine(shader
->ir
, state
);
2258 opt_shader_and_create_symbol_table(ctx
, state
->symbols
, shader
);
2261 if (!force_recompile
) {
2262 free((void *)shader
->FallbackSource
);
2264 /* Copy pre-processed shader include to fallback source otherwise we
2265 * have no guarantee the shader include source tree has not changed.
2267 shader
->FallbackSource
= source_has_shader_include
?
2268 strdup(source
) : NULL
;
2271 delete state
->symbols
;
2274 if (ctx
->Cache
&& shader
->CompileStatus
== COMPILE_SUCCESS
) {
2276 disk_cache_put_key(ctx
->Cache
, shader
->sha1
);
2277 if (ctx
->_Shader
->Flags
& GLSL_CACHE_INFO
) {
2278 _mesa_sha1_format(sha1_buf
, shader
->sha1
);
2279 fprintf(stderr
, "marking shader: %s\n", sha1_buf
);
2286 * Do the set of common optimizations passes
2288 * \param ir List of instructions to be optimized
2289 * \param linked Is the shader linked? This enables
2290 * optimizations passes that remove code at
2291 * global scope and could cause linking to
2293 * \param uniform_locations_assigned Have locations already been assigned for
2294 * uniforms? This prevents the declarations
2295 * of unused uniforms from being removed.
2296 * The setting of this flag only matters if
2297 * \c linked is \c true.
2298 * \param options The driver's preferred shader options.
2299 * \param native_integers Selects optimizations that depend on the
2300 * implementations supporting integers
2301 * natively (as opposed to supporting
2302 * integers in floating point registers).
2305 do_common_optimization(exec_list
*ir
, bool linked
,
2306 bool uniform_locations_assigned
,
2307 const struct gl_shader_compiler_options
*options
,
2308 bool native_integers
)
2310 const bool debug
= false;
2311 bool progress
= false;
2313 #define OPT(PASS, ...) do { \
2315 fprintf(stderr, "START GLSL optimization %s\n", #PASS); \
2316 const bool opt_progress = PASS(__VA_ARGS__); \
2317 progress = opt_progress || progress; \
2319 _mesa_print_ir(stderr, ir, NULL); \
2320 fprintf(stderr, "GLSL optimization %s: %s progress\n", \
2321 #PASS, opt_progress ? "made" : "no"); \
2323 progress = PASS(__VA_ARGS__) || progress; \
2327 OPT(lower_instructions
, ir
, SUB_TO_ADD_NEG
);
2330 OPT(do_function_inlining
, ir
);
2331 OPT(do_dead_functions
, ir
);
2332 OPT(do_structure_splitting
, ir
);
2334 propagate_invariance(ir
);
2335 OPT(do_if_simplification
, ir
);
2336 OPT(opt_flatten_nested_if_blocks
, ir
);
2337 OPT(opt_conditional_discard
, ir
);
2338 OPT(do_copy_propagation_elements
, ir
);
2340 if (options
->OptimizeForAOS
&& !linked
)
2341 OPT(opt_flip_matrices
, ir
);
2343 if (linked
&& options
->OptimizeForAOS
) {
2344 OPT(do_vectorize
, ir
);
2348 OPT(do_dead_code
, ir
, uniform_locations_assigned
);
2350 OPT(do_dead_code_unlinked
, ir
);
2351 OPT(do_dead_code_local
, ir
);
2352 OPT(do_tree_grafting
, ir
);
2353 OPT(do_constant_propagation
, ir
);
2355 OPT(do_constant_variable
, ir
);
2357 OPT(do_constant_variable_unlinked
, ir
);
2358 OPT(do_constant_folding
, ir
);
2359 OPT(do_minmax_prune
, ir
);
2360 OPT(do_rebalance_tree
, ir
);
2361 OPT(do_algebraic
, ir
, native_integers
, options
);
2362 OPT(do_lower_jumps
, ir
, true, true, options
->EmitNoMainReturn
,
2363 options
->EmitNoCont
, options
->EmitNoLoops
);
2364 OPT(do_vec_index_to_swizzle
, ir
);
2365 OPT(lower_vector_insert
, ir
, false);
2366 OPT(optimize_swizzles
, ir
);
2368 /* Some drivers only call do_common_optimization() once rather than in a
2369 * loop, and split arrays causes each element of a constant array to
2370 * dereference is own copy of the entire array initilizer. This IR is not
2371 * something that can be generated manually in a shader and is not
2372 * accounted for by NIR optimisations, the result is an exponential slow
2373 * down in compilation speed as a constant arrays element count grows. To
2374 * avoid that here we make sure to always clean up the mess split arrays
2375 * causes to constant arrays.
2377 bool array_split
= optimize_split_arrays(ir
, linked
);
2379 do_constant_propagation(ir
);
2380 progress
|= array_split
;
2382 OPT(optimize_redundant_jumps
, ir
);
2384 if (options
->MaxUnrollIterations
) {
2385 loop_state
*ls
= analyze_loop_variables(ir
);
2386 if (ls
->loop_found
) {
2387 bool loop_progress
= unroll_loops(ir
, ls
, options
);
2388 while (loop_progress
) {
2389 loop_progress
= false;
2390 loop_progress
|= do_constant_propagation(ir
);
2391 loop_progress
|= do_if_simplification(ir
);
2393 /* Some drivers only call do_common_optimization() once rather
2394 * than in a loop. So we must call do_lower_jumps() after
2395 * unrolling a loop because for drivers that use LLVM validation
2396 * will fail if a jump is not the last instruction in the block.
2397 * For example the following will fail LLVM validation:
2402 * (assign (x) (var_ref v124) (expression int + (var_ref v124)
2403 * (constant int (1)) ) )
2406 loop_progress
|= do_lower_jumps(ir
, true, true,
2407 options
->EmitNoMainReturn
,
2408 options
->EmitNoCont
,
2409 options
->EmitNoLoops
);
2411 progress
|= loop_progress
;