2
* Mesa 3-D graphics library
4
* Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
5
* Copyright (C) 2008 VMware, Inc. All Rights Reserved.
7
* Permission is hereby granted, free of charge, to any person obtaining a
8
* copy of this software and associated documentation files (the "Software"),
9
* to deal in the Software without restriction, including without limitation
10
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
11
* and/or sell copies of the Software, and to permit persons to whom the
12
* Software is furnished to do so, subject to the following conditions:
14
* The above copyright notice and this permission notice shall be included
15
* in all copies or substantial portions of the Software.
17
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26
* \file slang_compile.c
27
* slang front-end compiler
31
#include "main/imports.h"
32
#include "main/context.h"
33
#include "shader/program.h"
34
#include "shader/programopt.h"
35
#include "shader/prog_optimize.h"
36
#include "shader/prog_print.h"
37
#include "shader/prog_parameter.h"
38
#include "../../glsl/pp/sl_pp_public.h"
39
#include "../../glsl/cl/sl_cl_parse.h"
40
#include "slang_codegen.h"
41
#include "slang_compile.h"
42
#include "slang_storage.h"
43
#include "slang_log.h"
44
#include "slang_mem.h"
45
#include "slang_vartable.h"
46
#include "slang_simplify.h"
49
* This is a straightforward implementation of the slang front-end
50
* compiler. Lots of error-checking functionality is missing but
51
* every well-formed shader source should compile successfully and
52
* execute as expected. However, some semantically ill-formed shaders
53
* may be accepted resulting in undefined behaviour.
57
/** re-defined below, should be the same though */
58
#define TYPE_SPECIFIER_COUNT 36
62
* Check if the given identifier is legal.
65
legal_identifier(slang_atom name)
67
/* "gl_" is a reserved prefix */
68
if (strncmp((char *) name, "gl_", 3) == 0) {
80
_slang_code_unit_ctr(slang_code_unit * self,
81
struct slang_code_object_ * object)
83
_slang_variable_scope_ctr(&self->vars);
84
_slang_function_scope_ctr(&self->funs);
85
_slang_struct_scope_ctr(&self->structs);
86
self->object = object;
90
_slang_code_unit_dtr(slang_code_unit * self)
92
slang_variable_scope_destruct(&self->vars);
93
slang_function_scope_destruct(&self->funs);
94
slang_struct_scope_destruct(&self->structs);
102
_slang_code_object_ctr(slang_code_object * self)
106
for (i = 0; i < SLANG_BUILTIN_TOTAL; i++)
107
_slang_code_unit_ctr(&self->builtin[i], self);
108
_slang_code_unit_ctr(&self->unit, self);
109
slang_atom_pool_construct(&self->atompool);
113
_slang_code_object_dtr(slang_code_object * self)
117
for (i = 0; i < SLANG_BUILTIN_TOTAL; i++)
118
_slang_code_unit_dtr(&self->builtin[i]);
119
_slang_code_unit_dtr(&self->unit);
120
slang_atom_pool_destruct(&self->atompool);
124
/* slang_parse_ctx */
126
typedef struct slang_parse_ctx_
128
const unsigned char *I;
131
GLboolean global_scope; /**< Is object being declared a global? */
132
slang_atom_pool *atoms;
133
slang_unit_type type; /**< Vertex vs. Fragment */
134
GLuint version; /**< user-specified (or default) #version */
137
/* slang_output_ctx */
139
typedef struct slang_output_ctx_
141
slang_variable_scope *vars;
142
slang_function_scope *funs;
143
slang_struct_scope *structs;
144
struct gl_program *program;
145
struct gl_sl_pragmas *pragmas;
146
slang_var_table *vartable;
147
GLuint default_precision[TYPE_SPECIFIER_COUNT];
148
GLboolean allow_precision;
149
GLboolean allow_invariant;
150
GLboolean allow_centroid;
151
GLboolean allow_array_types; /* float[] syntax */
154
/* _slang_compile() */
157
/* Debugging aid, print file/line where parsing error is detected */
161
printf("slang error at %s:%d\n", __FILE__, __LINE__); \
167
parse_identifier_str(slang_parse_ctx * C, char **id)
170
C->I += strlen(*id) + 1;
174
parse_identifier(slang_parse_ctx * C)
178
id = (const char *) C->I;
179
C->I += strlen(id) + 1;
180
return slang_atom_pool_atom(C->atoms, id);
186
return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
190
parse_general_number(slang_parse_ctx *ctx, float *number)
194
if (*ctx->I == '0') {
196
const unsigned char *pi;
198
if (ctx->I[1] == 'x' || ctx->I[1] == 'X') {
200
if (!is_hex_digit(*ctx->I)) {
206
if (*ctx->I >= '0' && *ctx->I <= '9') {
207
digit = (int)(*ctx->I - '0');
208
} else if (*ctx->I >= 'a' && *ctx->I <= 'f') {
209
digit = (int)(*ctx->I - 'a') + 10;
211
digit = (int)(*ctx->I - 'A') + 10;
213
value = value * 0x10 + digit;
215
} while (is_hex_digit(*ctx->I));
216
if (*ctx->I != '\0') {
220
*number = (float)value;
226
while (*pi >= '0' && *pi <= '7') {
229
digit = (int)(*pi - '0');
230
value = value * 010 + digit;
236
*number = (float)value;
241
parse_identifier_str(ctx, &flt);
242
flt = _mesa_strdup(flt);
246
if (flt[strlen(flt) - 1] == 'f' || flt[strlen(flt) - 1] == 'F') {
247
flt[strlen(flt) - 1] = '\0';
249
*number = _mesa_strtof(flt, (char **)NULL);
256
parse_number(slang_parse_ctx * C, int *number)
258
const int radix = (int) (*C->I++);
263
parse_general_number(C, &f);
267
while (*C->I != '\0') {
269
if (*C->I >= '0' && *C->I <= '9')
270
digit = (int) (*C->I - '0');
271
else if (*C->I >= 'A' && *C->I <= 'Z')
272
digit = (int) (*C->I - 'A') + 10;
274
digit = (int) (*C->I - 'a') + 10;
275
*number = *number * radix + digit;
281
slang_info_log_warning(C->L, "%d: literal integer overflow.", *number);
286
parse_float(slang_parse_ctx * C, float *number)
290
parse_general_number(C, number);
292
char *integral = NULL;
293
char *fractional = NULL;
294
char *exponent = NULL;
297
parse_identifier_str(C, &integral);
298
parse_identifier_str(C, &fractional);
299
parse_identifier_str(C, &exponent);
301
whole = (char *) _slang_alloc((strlen(integral) +
303
strlen(exponent) + 3) * sizeof(char));
305
slang_info_log_memory(C->L);
309
slang_string_copy(whole, integral);
310
slang_string_concat(whole, ".");
311
slang_string_concat(whole, fractional);
312
slang_string_concat(whole, "E");
313
slang_string_concat(whole, exponent);
315
*number = _mesa_strtof(whole, (char **) NULL);
323
/* revision number - increment after each change affecting emitted output */
327
check_revision(slang_parse_ctx * C)
329
if (*C->I != REVISION) {
330
slang_info_log_error(C->L, "Internal compiler error.");
337
static int parse_statement(slang_parse_ctx *, slang_output_ctx *,
339
static int parse_expression(slang_parse_ctx *, slang_output_ctx *,
341
static int parse_type_specifier(slang_parse_ctx *, slang_output_ctx *,
342
slang_type_specifier *);
344
parse_type_array_size(slang_parse_ctx *C,
349
parse_array_len(slang_parse_ctx * C, slang_output_ctx * O, GLuint * len)
351
slang_operation array_size;
352
slang_name_space space;
355
if (!slang_operation_construct(&array_size))
357
if (!parse_expression(C, O, &array_size)) {
358
slang_operation_destruct(&array_size);
362
space.funcs = O->funs;
363
space.structs = O->structs;
364
space.vars = O->vars;
366
/* evaluate compile-time expression which is array size */
367
_slang_simplify(&array_size, &space, C->atoms);
369
if (array_size.type == SLANG_OPER_LITERAL_INT) {
371
*len = (GLint) array_size.literal[0];
372
} else if (array_size.type == SLANG_OPER_IDENTIFIER) {
373
slang_variable *var = _slang_variable_locate(array_size.locals, array_size.a_id, GL_TRUE);
375
slang_info_log_error(C->L, "undefined variable '%s'",
376
(char *) array_size.a_id);
378
} else if (var->type.qualifier == SLANG_QUAL_CONST &&
379
var->type.specifier.type == SLANG_SPEC_INT) {
380
if (var->initializer &&
381
var->initializer->type == SLANG_OPER_LITERAL_INT) {
382
*len = (GLint) var->initializer->literal[0];
385
slang_info_log_error(C->L, "unable to parse array size declaration");
389
slang_info_log_error(C->L, "unable to parse array size declaration");
396
slang_operation_destruct(&array_size);
401
calculate_var_size(slang_parse_ctx * C, slang_output_ctx * O,
402
slang_variable * var)
404
slang_storage_aggregate agg;
406
if (!slang_storage_aggregate_construct(&agg))
408
if (!_slang_aggregate_variable(&agg, &var->type.specifier, var->array_len,
409
O->funs, O->structs, O->vars, C->atoms)) {
410
slang_storage_aggregate_destruct(&agg);
413
var->size = _slang_sizeof_aggregate(&agg);
414
slang_storage_aggregate_destruct(&agg);
419
promote_type_to_array(slang_parse_ctx *C,
420
slang_fully_specified_type *type,
423
slang_type_specifier *baseType =
424
slang_type_specifier_new(type->specifier.type, NULL, NULL);
426
type->specifier.type = SLANG_SPEC_ARRAY;
427
type->specifier._array = baseType;
428
type->array_len = array_len;
433
convert_to_array(slang_parse_ctx * C, slang_variable * var,
434
const slang_type_specifier * sp)
436
/* sized array - mark it as array, copy the specifier to the array element
437
* and parse the expression */
438
var->type.specifier.type = SLANG_SPEC_ARRAY;
439
var->type.specifier._array = (slang_type_specifier *)
440
_slang_alloc(sizeof(slang_type_specifier));
441
if (var->type.specifier._array == NULL) {
442
slang_info_log_memory(C->L);
445
slang_type_specifier_ctr(var->type.specifier._array);
446
return slang_type_specifier_copy(var->type.specifier._array, sp);
449
/* structure field */
452
#define FIELD_ARRAY 2
455
parse_struct_field_var(slang_parse_ctx * C, slang_output_ctx * O,
456
slang_variable * var, slang_atom a_name,
457
const slang_type_specifier * sp,
460
var->a_name = a_name;
461
if (var->a_name == SLANG_ATOM_NULL)
466
if (array_len != -1) {
467
if (!convert_to_array(C, var, sp))
469
var->array_len = array_len;
472
if (!slang_type_specifier_copy(&var->type.specifier, sp))
479
if (!convert_to_array(C, var, sp))
481
if (!parse_array_len(C, O, &var->array_len))
488
return calculate_var_size(C, O, var);
492
parse_struct_field(slang_parse_ctx * C, slang_output_ctx * O,
493
slang_struct * st, slang_type_specifier * sp)
495
slang_output_ctx o = *O;
498
o.structs = st->structs;
499
if (!parse_type_specifier(C, &o, sp))
501
if (!parse_type_array_size(C, &o, &array_len))
506
slang_variable *var = slang_variable_scope_grow(st->fields);
508
slang_info_log_memory(C->L);
511
a_name = parse_identifier(C);
512
if (_slang_variable_locate(st->fields, a_name, GL_FALSE)) {
513
slang_info_log_error(C->L, "duplicate field '%s'", (char *) a_name);
517
if (!parse_struct_field_var(C, &o, var, a_name, sp, array_len))
520
while (*C->I++ != FIELD_NONE);
526
parse_struct(slang_parse_ctx * C, slang_output_ctx * O, slang_struct ** st)
531
/* parse struct name (if any) and make sure it is unique in current scope */
532
a_name = parse_identifier(C);
533
if (a_name == SLANG_ATOM_NULL)
536
name = slang_atom_pool_id(C->atoms, a_name);
538
&& slang_struct_scope_find(O->structs, a_name, 0) != NULL) {
539
slang_info_log_error(C->L, "%s: duplicate type name.", name);
543
/* set-up a new struct */
544
*st = (slang_struct *) _slang_alloc(sizeof(slang_struct));
546
slang_info_log_memory(C->L);
549
if (!slang_struct_construct(*st)) {
552
slang_info_log_memory(C->L);
555
(**st).a_name = a_name;
556
(**st).structs->outer_scope = O->structs;
558
/* parse individual struct fields */
560
slang_type_specifier sp;
562
slang_type_specifier_ctr(&sp);
563
if (!parse_struct_field(C, O, *st, &sp)) {
564
slang_type_specifier_dtr(&sp);
567
slang_type_specifier_dtr(&sp);
569
while (*C->I++ != FIELD_NONE);
571
/* if named struct, copy it to current scope */
572
if (name[0] != '\0') {
575
O->structs->structs =
576
(slang_struct *) _slang_realloc(O->structs->structs,
577
O->structs->num_structs
578
* sizeof(slang_struct),
579
(O->structs->num_structs + 1)
580
* sizeof(slang_struct));
581
if (O->structs->structs == NULL) {
582
slang_info_log_memory(C->L);
585
s = &O->structs->structs[O->structs->num_structs];
586
if (!slang_struct_construct(s))
588
O->structs->num_structs++;
589
if (!slang_struct_copy(s, *st))
597
/* invariant qualifer */
598
#define TYPE_VARIANT 90
599
#define TYPE_INVARIANT 91
602
parse_type_variant(slang_parse_ctx * C, slang_type_variant *variant)
604
GLuint invariant = *C->I++;
607
*variant = SLANG_VARIANT;
610
*variant = SLANG_INVARIANT;
618
/* centroid qualifer */
619
#define TYPE_CENTER 95
620
#define TYPE_CENTROID 96
623
parse_type_centroid(slang_parse_ctx * C, slang_type_centroid *centroid)
628
*centroid = SLANG_CENTER;
631
*centroid = SLANG_CENTROID;
639
/* Layout qualifiers */
640
#define LAYOUT_QUALIFIER_NONE 0
641
#define LAYOUT_QUALIFIER_UPPER_LEFT 1
642
#define LAYOUT_QUALIFIER_PIXEL_CENTER_INTEGER 2
645
parse_layout_qualifiers(slang_parse_ctx * C, slang_layout_qualifier *layout)
649
/* the layout qualifiers come as a list of LAYOUT_QUALIFER_x tokens,
650
* terminated by LAYOUT_QUALIFIER_NONE.
655
case LAYOUT_QUALIFIER_NONE:
656
/* end of list of qualifiers */
658
case LAYOUT_QUALIFIER_UPPER_LEFT:
659
*layout |= SLANG_LAYOUT_UPPER_LEFT_BIT;
661
case LAYOUT_QUALIFIER_PIXEL_CENTER_INTEGER:
662
*layout |= SLANG_LAYOUT_PIXEL_CENTER_INTEGER_BIT;
665
assert(0 && "Bad layout qualifier");
672
#define TYPE_QUALIFIER_NONE 0
673
#define TYPE_QUALIFIER_CONST 1
674
#define TYPE_QUALIFIER_ATTRIBUTE 2
675
#define TYPE_QUALIFIER_VARYING 3
676
#define TYPE_QUALIFIER_UNIFORM 4
677
#define TYPE_QUALIFIER_FIXEDOUTPUT 5
678
#define TYPE_QUALIFIER_FIXEDINPUT 6
681
parse_type_qualifier(slang_parse_ctx * C, slang_type_qualifier * qual)
683
GLuint qualifier = *C->I++;
685
case TYPE_QUALIFIER_NONE:
686
*qual = SLANG_QUAL_NONE;
688
case TYPE_QUALIFIER_CONST:
689
*qual = SLANG_QUAL_CONST;
691
case TYPE_QUALIFIER_ATTRIBUTE:
692
*qual = SLANG_QUAL_ATTRIBUTE;
694
case TYPE_QUALIFIER_VARYING:
695
*qual = SLANG_QUAL_VARYING;
697
case TYPE_QUALIFIER_UNIFORM:
698
*qual = SLANG_QUAL_UNIFORM;
700
case TYPE_QUALIFIER_FIXEDOUTPUT:
701
*qual = SLANG_QUAL_FIXEDOUTPUT;
703
case TYPE_QUALIFIER_FIXEDINPUT:
704
*qual = SLANG_QUAL_FIXEDINPUT;
713
#define TYPE_SPECIFIER_VOID 0
714
#define TYPE_SPECIFIER_BOOL 1
715
#define TYPE_SPECIFIER_BVEC2 2
716
#define TYPE_SPECIFIER_BVEC3 3
717
#define TYPE_SPECIFIER_BVEC4 4
718
#define TYPE_SPECIFIER_INT 5
719
#define TYPE_SPECIFIER_IVEC2 6
720
#define TYPE_SPECIFIER_IVEC3 7
721
#define TYPE_SPECIFIER_IVEC4 8
722
#define TYPE_SPECIFIER_FLOAT 9
723
#define TYPE_SPECIFIER_VEC2 10
724
#define TYPE_SPECIFIER_VEC3 11
725
#define TYPE_SPECIFIER_VEC4 12
726
#define TYPE_SPECIFIER_MAT2 13
727
#define TYPE_SPECIFIER_MAT3 14
728
#define TYPE_SPECIFIER_MAT4 15
729
#define TYPE_SPECIFIER_SAMPLER1D 16
730
#define TYPE_SPECIFIER_SAMPLER2D 17
731
#define TYPE_SPECIFIER_SAMPLER3D 18
732
#define TYPE_SPECIFIER_SAMPLERCUBE 19
733
#define TYPE_SPECIFIER_SAMPLER1DSHADOW 20
734
#define TYPE_SPECIFIER_SAMPLER2DSHADOW 21
735
#define TYPE_SPECIFIER_SAMPLER2DRECT 22
736
#define TYPE_SPECIFIER_SAMPLER2DRECTSHADOW 23
737
#define TYPE_SPECIFIER_STRUCT 24
738
#define TYPE_SPECIFIER_TYPENAME 25
739
#define TYPE_SPECIFIER_MAT23 26
740
#define TYPE_SPECIFIER_MAT32 27
741
#define TYPE_SPECIFIER_MAT24 28
742
#define TYPE_SPECIFIER_MAT42 29
743
#define TYPE_SPECIFIER_MAT34 30
744
#define TYPE_SPECIFIER_MAT43 31
745
#define TYPE_SPECIFIER_SAMPLER_1D_ARRAY 32
746
#define TYPE_SPECIFIER_SAMPLER_2D_ARRAY 33
747
#define TYPE_SPECIFIER_SAMPLER_1D_ARRAY_SHADOW 34
748
#define TYPE_SPECIFIER_SAMPLER_2D_ARRAY_SHADOW 35
749
#define TYPE_SPECIFIER_COUNT 36
752
parse_type_specifier(slang_parse_ctx * C, slang_output_ctx * O,
753
slang_type_specifier * spec)
757
case TYPE_SPECIFIER_VOID:
758
spec->type = SLANG_SPEC_VOID;
760
case TYPE_SPECIFIER_BOOL:
761
spec->type = SLANG_SPEC_BOOL;
763
case TYPE_SPECIFIER_BVEC2:
764
spec->type = SLANG_SPEC_BVEC2;
766
case TYPE_SPECIFIER_BVEC3:
767
spec->type = SLANG_SPEC_BVEC3;
769
case TYPE_SPECIFIER_BVEC4:
770
spec->type = SLANG_SPEC_BVEC4;
772
case TYPE_SPECIFIER_INT:
773
spec->type = SLANG_SPEC_INT;
775
case TYPE_SPECIFIER_IVEC2:
776
spec->type = SLANG_SPEC_IVEC2;
778
case TYPE_SPECIFIER_IVEC3:
779
spec->type = SLANG_SPEC_IVEC3;
781
case TYPE_SPECIFIER_IVEC4:
782
spec->type = SLANG_SPEC_IVEC4;
784
case TYPE_SPECIFIER_FLOAT:
785
spec->type = SLANG_SPEC_FLOAT;
787
case TYPE_SPECIFIER_VEC2:
788
spec->type = SLANG_SPEC_VEC2;
790
case TYPE_SPECIFIER_VEC3:
791
spec->type = SLANG_SPEC_VEC3;
793
case TYPE_SPECIFIER_VEC4:
794
spec->type = SLANG_SPEC_VEC4;
796
case TYPE_SPECIFIER_MAT2:
797
spec->type = SLANG_SPEC_MAT2;
799
case TYPE_SPECIFIER_MAT3:
800
spec->type = SLANG_SPEC_MAT3;
802
case TYPE_SPECIFIER_MAT4:
803
spec->type = SLANG_SPEC_MAT4;
805
case TYPE_SPECIFIER_MAT23:
806
spec->type = SLANG_SPEC_MAT23;
808
case TYPE_SPECIFIER_MAT32:
809
spec->type = SLANG_SPEC_MAT32;
811
case TYPE_SPECIFIER_MAT24:
812
spec->type = SLANG_SPEC_MAT24;
814
case TYPE_SPECIFIER_MAT42:
815
spec->type = SLANG_SPEC_MAT42;
817
case TYPE_SPECIFIER_MAT34:
818
spec->type = SLANG_SPEC_MAT34;
820
case TYPE_SPECIFIER_MAT43:
821
spec->type = SLANG_SPEC_MAT43;
823
case TYPE_SPECIFIER_SAMPLER1D:
824
spec->type = SLANG_SPEC_SAMPLER_1D;
826
case TYPE_SPECIFIER_SAMPLER2D:
827
spec->type = SLANG_SPEC_SAMPLER_2D;
829
case TYPE_SPECIFIER_SAMPLER3D:
830
spec->type = SLANG_SPEC_SAMPLER_3D;
832
case TYPE_SPECIFIER_SAMPLERCUBE:
833
spec->type = SLANG_SPEC_SAMPLER_CUBE;
835
case TYPE_SPECIFIER_SAMPLER2DRECT:
836
spec->type = SLANG_SPEC_SAMPLER_RECT;
838
case TYPE_SPECIFIER_SAMPLER1DSHADOW:
839
spec->type = SLANG_SPEC_SAMPLER_1D_SHADOW;
841
case TYPE_SPECIFIER_SAMPLER2DSHADOW:
842
spec->type = SLANG_SPEC_SAMPLER_2D_SHADOW;
844
case TYPE_SPECIFIER_SAMPLER2DRECTSHADOW:
845
spec->type = SLANG_SPEC_SAMPLER_RECT_SHADOW;
847
case TYPE_SPECIFIER_SAMPLER_1D_ARRAY:
848
spec->type = SLANG_SPEC_SAMPLER_1D_ARRAY;
850
case TYPE_SPECIFIER_SAMPLER_2D_ARRAY:
851
spec->type = SLANG_SPEC_SAMPLER_2D_ARRAY;
853
case TYPE_SPECIFIER_SAMPLER_1D_ARRAY_SHADOW:
854
spec->type = SLANG_SPEC_SAMPLER_1D_ARRAY_SHADOW;
856
case TYPE_SPECIFIER_SAMPLER_2D_ARRAY_SHADOW:
857
spec->type = SLANG_SPEC_SAMPLER_2D_ARRAY_SHADOW;
859
case TYPE_SPECIFIER_STRUCT:
860
spec->type = SLANG_SPEC_STRUCT;
861
if (!parse_struct(C, O, &spec->_struct))
864
case TYPE_SPECIFIER_TYPENAME:
865
spec->type = SLANG_SPEC_STRUCT;
870
a_name = parse_identifier(C);
874
stru = slang_struct_scope_find(O->structs, a_name, 1);
876
slang_info_log_error(C->L, "undeclared type name '%s'",
877
slang_atom_pool_id(C->atoms, a_name));
881
spec->_struct = (slang_struct *) _slang_alloc(sizeof(slang_struct));
882
if (spec->_struct == NULL) {
883
slang_info_log_memory(C->L);
886
if (!slang_struct_construct(spec->_struct)) {
887
_slang_free(spec->_struct);
888
spec->_struct = NULL;
891
if (!slang_struct_copy(spec->_struct, stru))
901
#define TYPE_SPECIFIER_NONARRAY 0
902
#define TYPE_SPECIFIER_ARRAY 1
905
parse_type_array_size(slang_parse_ctx *C,
912
case TYPE_SPECIFIER_NONARRAY:
913
*array_len = -1; /* -1 = not an array */
915
case TYPE_SPECIFIER_ARRAY:
916
if (!parse_array_len(C, O, &size))
918
*array_len = (GLint) size;
927
#define PRECISION_DEFAULT 0
928
#define PRECISION_LOW 1
929
#define PRECISION_MEDIUM 2
930
#define PRECISION_HIGH 3
933
parse_type_precision(slang_parse_ctx *C,
934
slang_type_precision *precision)
936
GLint prec = *C->I++;
938
case PRECISION_DEFAULT:
939
*precision = SLANG_PREC_DEFAULT;
942
*precision = SLANG_PREC_LOW;
944
case PRECISION_MEDIUM:
945
*precision = SLANG_PREC_MEDIUM;
948
*precision = SLANG_PREC_HIGH;
956
parse_fully_specified_type(slang_parse_ctx * C, slang_output_ctx * O,
957
slang_fully_specified_type * type)
959
if (!parse_layout_qualifiers(C, &type->layout))
962
if (!parse_type_variant(C, &type->variant))
965
if (!parse_type_centroid(C, &type->centroid))
968
if (!parse_type_qualifier(C, &type->qualifier))
971
if (!parse_type_precision(C, &type->precision))
974
if (!parse_type_specifier(C, O, &type->specifier))
977
if (!parse_type_array_size(C, O, &type->array_len))
980
if (!O->allow_invariant && type->variant == SLANG_INVARIANT) {
981
slang_info_log_error(C->L,
982
"'invariant' keyword not allowed (perhaps set #version 120)");
986
if (!O->allow_centroid && type->centroid == SLANG_CENTROID) {
987
slang_info_log_error(C->L,
988
"'centroid' keyword not allowed (perhaps set #version 120)");
991
else if (type->centroid == SLANG_CENTROID &&
992
type->qualifier != SLANG_QUAL_VARYING) {
993
slang_info_log_error(C->L,
994
"'centroid' keyword only allowed for varying vars");
1000
if (type->qualifier != SLANG_QUAL_VARYING &&
1001
type->variant == SLANG_INVARIANT) {
1002
slang_info_log_error(C->L,
1003
"invariant qualifer only allowed for varying vars");
1008
if (O->allow_precision) {
1009
if (type->precision == SLANG_PREC_DEFAULT) {
1010
assert(type->specifier.type < TYPE_SPECIFIER_COUNT);
1011
/* use the default precision for this datatype */
1012
type->precision = O->default_precision[type->specifier.type];
1016
/* only default is allowed */
1017
if (type->precision != SLANG_PREC_DEFAULT) {
1018
slang_info_log_error(C->L, "precision qualifiers not allowed");
1023
if (!O->allow_array_types && type->array_len >= 0) {
1024
slang_info_log_error(C->L, "first-class array types not allowed");
1028
if (type->array_len >= 0) {
1029
/* convert type to array type (ex: convert "int" to "array of int" */
1030
promote_type_to_array(C, type, type->array_len);
1038
#define OP_BLOCK_BEGIN_NO_NEW_SCOPE 1
1039
#define OP_BLOCK_BEGIN_NEW_SCOPE 2
1040
#define OP_DECLARE 3
1043
#define OP_CONTINUE 6
1044
#define OP_DISCARD 7
1046
#define OP_EXPRESSION 9
1051
#define OP_PUSH_VOID 14
1052
#define OP_PUSH_BOOL 15
1053
#define OP_PUSH_INT 16
1054
#define OP_PUSH_FLOAT 17
1055
#define OP_PUSH_IDENTIFIER 18
1056
#define OP_SEQUENCE 19
1057
#define OP_ASSIGN 20
1058
#define OP_ADDASSIGN 21
1059
#define OP_SUBASSIGN 22
1060
#define OP_MULASSIGN 23
1061
#define OP_DIVASSIGN 24
1062
/*#define OP_MODASSIGN 25*/
1063
/*#define OP_LSHASSIGN 26*/
1064
/*#define OP_RSHASSIGN 27*/
1065
/*#define OP_ORASSIGN 28*/
1066
/*#define OP_XORASSIGN 29*/
1067
/*#define OP_ANDASSIGN 30*/
1068
#define OP_SELECT 31
1069
#define OP_LOGICALOR 32
1070
#define OP_LOGICALXOR 33
1071
#define OP_LOGICALAND 34
1072
/*#define OP_BITOR 35*/
1073
/*#define OP_BITXOR 36*/
1074
/*#define OP_BITAND 37*/
1076
#define OP_NOTEQUAL 39
1078
#define OP_GREATER 41
1079
#define OP_LESSEQUAL 42
1080
#define OP_GREATEREQUAL 43
1081
/*#define OP_LSHIFT 44*/
1082
/*#define OP_RSHIFT 45*/
1084
#define OP_SUBTRACT 47
1085
#define OP_MULTIPLY 48
1086
#define OP_DIVIDE 49
1087
/*#define OP_MODULUS 50*/
1088
#define OP_PREINCREMENT 51
1089
#define OP_PREDECREMENT 52
1092
/*#define OP_COMPLEMENT 55*/
1094
#define OP_SUBSCRIPT 57
1097
#define OP_POSTINCREMENT 60
1098
#define OP_POSTDECREMENT 61
1099
#define OP_PRECISION 62
1100
#define OP_METHOD 63
1104
* When parsing a compound production, this function is used to parse the
1106
* For example, a while-loop compound will have two children, the
1107
* while condition expression and the loop body. So, this function will
1108
* be called twice to parse those two sub-expressions.
1109
* \param C the parsing context
1110
* \param O the output context
1111
* \param oper the operation we're parsing
1112
* \param statement indicates whether parsing a statement, or expression
1113
* \return 1 if success, 0 if error
1116
parse_child_operation(slang_parse_ctx * C, slang_output_ctx * O,
1117
slang_operation * oper, GLboolean statement)
1119
slang_operation *ch;
1121
/* grow child array */
1122
ch = slang_operation_grow(&oper->num_children, &oper->children);
1124
return parse_statement(C, O, ch);
1125
return parse_expression(C, O, ch);
1128
static int parse_declaration(slang_parse_ctx * C, slang_output_ctx * O);
1131
parse_statement(slang_parse_ctx * C, slang_output_ctx * O,
1132
slang_operation * oper)
1136
oper->locals->outer_scope = O->vars;
1140
case OP_BLOCK_BEGIN_NO_NEW_SCOPE:
1141
/* parse child statements, do not create new variable scope */
1142
oper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
1143
while (*C->I != OP_END)
1144
if (!parse_child_operation(C, O, oper, GL_TRUE))
1148
case OP_BLOCK_BEGIN_NEW_SCOPE:
1149
/* parse child statements, create new variable scope */
1151
slang_output_ctx o = *O;
1153
oper->type = SLANG_OPER_BLOCK_NEW_SCOPE;
1154
o.vars = oper->locals;
1155
while (*C->I != OP_END)
1156
if (!parse_child_operation(C, &o, oper, GL_TRUE))
1162
/* local variable declaration, individual declarators are stored as
1163
* children identifiers
1165
oper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
1167
const unsigned int first_var = O->vars->num_variables;
1169
/* parse the declaration, note that there can be zero or more
1170
* than one declarators
1172
if (!parse_declaration(C, O))
1174
if (first_var < O->vars->num_variables) {
1175
const unsigned int num_vars = O->vars->num_variables - first_var;
1177
assert(oper->num_children == 0);
1178
oper->num_children = num_vars;
1179
oper->children = slang_operation_new(num_vars);
1180
if (oper->children == NULL) {
1181
slang_info_log_memory(C->L);
1184
for (i = first_var; i < O->vars->num_variables; i++) {
1185
slang_operation *o = &oper->children[i - first_var];
1186
slang_variable *var = O->vars->variables[i];
1187
o->type = SLANG_OPER_VARIABLE_DECL;
1188
o->locals->outer_scope = O->vars;
1189
o->a_id = var->a_name;
1192
calculate_var_size(C, O, var);
1195
if (!legal_identifier(o->a_id)) {
1196
slang_info_log_error(C->L, "illegal variable name '%s'",
1205
/* the __asm statement, parse the mnemonic and all its arguments
1208
oper->type = SLANG_OPER_ASM;
1209
oper->a_id = parse_identifier(C);
1210
if (oper->a_id == SLANG_ATOM_NULL)
1212
while (*C->I != OP_END) {
1213
if (!parse_child_operation(C, O, oper, GL_FALSE))
1219
oper->type = SLANG_OPER_BREAK;
1222
oper->type = SLANG_OPER_CONTINUE;
1225
oper->type = SLANG_OPER_DISCARD;
1228
oper->type = SLANG_OPER_RETURN;
1229
if (!parse_child_operation(C, O, oper, GL_FALSE))
1233
oper->type = SLANG_OPER_EXPRESSION;
1234
if (!parse_child_operation(C, O, oper, GL_FALSE))
1238
oper->type = SLANG_OPER_IF;
1239
if (!parse_child_operation(C, O, oper, GL_FALSE))
1241
if (!parse_child_operation(C, O, oper, GL_TRUE))
1243
if (!parse_child_operation(C, O, oper, GL_TRUE))
1248
slang_output_ctx o = *O;
1250
oper->type = SLANG_OPER_WHILE;
1251
o.vars = oper->locals;
1252
if (!parse_child_operation(C, &o, oper, GL_TRUE))
1254
if (!parse_child_operation(C, &o, oper, GL_TRUE))
1259
oper->type = SLANG_OPER_DO;
1260
if (!parse_child_operation(C, O, oper, GL_TRUE))
1262
if (!parse_child_operation(C, O, oper, GL_FALSE))
1267
slang_output_ctx o = *O;
1269
oper->type = SLANG_OPER_FOR;
1270
o.vars = oper->locals;
1271
if (!parse_child_operation(C, &o, oper, GL_TRUE))
1273
if (!parse_child_operation(C, &o, oper, GL_TRUE))
1275
if (!parse_child_operation(C, &o, oper, GL_FALSE))
1277
if (!parse_child_operation(C, &o, oper, GL_TRUE))
1283
/* set default precision for a type in this scope */
1284
/* ignored at this time */
1285
int prec_qual = *C->I++;
1286
int datatype = *C->I++;
1292
/*printf("Unexpected operation %d\n", op);*/
1299
handle_nary_expression(slang_parse_ctx * C, slang_operation * op,
1300
slang_operation ** ops, unsigned int *total_ops,
1305
op->children = slang_operation_new(n);
1306
if (op->children == NULL) {
1307
slang_info_log_memory(C->L);
1310
op->num_children = n;
1312
for (i = 0; i < n; i++) {
1313
slang_operation_destruct(&op->children[i]);
1314
op->children[i] = (*ops)[*total_ops - (n + 1 - i)];
1317
(*ops)[*total_ops - (n + 1)] = (*ops)[*total_ops - 1];
1320
*ops = (slang_operation *)
1321
_slang_realloc(*ops,
1322
(*total_ops + n) * sizeof(slang_operation),
1323
*total_ops * sizeof(slang_operation));
1325
slang_info_log_memory(C->L);
1332
is_constructor_name(const char *name, slang_atom a_name,
1333
slang_struct_scope * structs)
1335
if (slang_type_specifier_type_from_string(name) != SLANG_SPEC_VOID)
1337
return slang_struct_scope_find(structs, a_name, 1) != NULL;
1340
#define FUNCTION_CALL_NONARRAY 0
1341
#define FUNCTION_CALL_ARRAY 1
1344
parse_expression(slang_parse_ctx * C, slang_output_ctx * O,
1345
slang_operation * oper)
1347
slang_operation *ops = NULL;
1348
unsigned int num_ops = 0;
1351
while (*C->I != OP_END) {
1352
slang_operation *op;
1353
const unsigned int op_code = *C->I++;
1355
/* allocate default operation, becomes a no-op if not used */
1356
ops = (slang_operation *)
1358
num_ops * sizeof(slang_operation),
1359
(num_ops + 1) * sizeof(slang_operation));
1361
slang_info_log_memory(C->L);
1365
if (!slang_operation_construct(op)) {
1366
slang_info_log_memory(C->L);
1370
op->locals->outer_scope = O->vars;
1374
op->type = SLANG_OPER_VOID;
1377
op->type = SLANG_OPER_LITERAL_BOOL;
1378
if (!parse_number(C, &number))
1383
op->literal[3] = (GLfloat) number;
1384
op->literal_size = 1;
1387
op->type = SLANG_OPER_LITERAL_INT;
1388
if (!parse_number(C, &number))
1393
op->literal[3] = (GLfloat) number;
1394
op->literal_size = 1;
1397
op->type = SLANG_OPER_LITERAL_FLOAT;
1398
if (!parse_float(C, &op->literal[0]))
1402
op->literal[3] = op->literal[0];
1403
op->literal_size = 1;
1405
case OP_PUSH_IDENTIFIER:
1406
op->type = SLANG_OPER_IDENTIFIER;
1407
op->a_id = parse_identifier(C);
1408
if (op->a_id == SLANG_ATOM_NULL)
1412
op->type = SLANG_OPER_SEQUENCE;
1413
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1417
op->type = SLANG_OPER_ASSIGN;
1418
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1422
op->type = SLANG_OPER_ADDASSIGN;
1423
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1427
op->type = SLANG_OPER_SUBASSIGN;
1428
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1432
op->type = SLANG_OPER_MULASSIGN;
1433
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1437
op->type = SLANG_OPER_DIVASSIGN;
1438
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1441
/*case OP_MODASSIGN: */
1442
/*case OP_LSHASSIGN: */
1443
/*case OP_RSHASSIGN: */
1444
/*case OP_ORASSIGN: */
1445
/*case OP_XORASSIGN: */
1446
/*case OP_ANDASSIGN: */
1448
op->type = SLANG_OPER_SELECT;
1449
if (!handle_nary_expression(C, op, &ops, &num_ops, 3))
1453
op->type = SLANG_OPER_LOGICALOR;
1454
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1458
op->type = SLANG_OPER_LOGICALXOR;
1459
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1463
op->type = SLANG_OPER_LOGICALAND;
1464
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1468
/*case OP_BITXOR: */
1469
/*case OP_BITAND: */
1471
op->type = SLANG_OPER_EQUAL;
1472
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1476
op->type = SLANG_OPER_NOTEQUAL;
1477
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1481
op->type = SLANG_OPER_LESS;
1482
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1486
op->type = SLANG_OPER_GREATER;
1487
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1491
op->type = SLANG_OPER_LESSEQUAL;
1492
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1495
case OP_GREATEREQUAL:
1496
op->type = SLANG_OPER_GREATEREQUAL;
1497
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1500
/*case OP_LSHIFT: */
1501
/*case OP_RSHIFT: */
1503
op->type = SLANG_OPER_ADD;
1504
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1508
op->type = SLANG_OPER_SUBTRACT;
1509
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1513
op->type = SLANG_OPER_MULTIPLY;
1514
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1518
op->type = SLANG_OPER_DIVIDE;
1519
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1522
/*case OP_MODULUS: */
1523
case OP_PREINCREMENT:
1524
op->type = SLANG_OPER_PREINCREMENT;
1525
if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
1528
case OP_PREDECREMENT:
1529
op->type = SLANG_OPER_PREDECREMENT;
1530
if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
1534
op->type = SLANG_OPER_PLUS;
1535
if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
1539
op->type = SLANG_OPER_MINUS;
1540
if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
1544
op->type = SLANG_OPER_NOT;
1545
if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
1548
/*case OP_COMPLEMENT: */
1550
op->type = SLANG_OPER_SUBSCRIPT;
1551
if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
1555
op->type = SLANG_OPER_METHOD;
1556
op->a_obj = parse_identifier(C);
1557
if (op->a_obj == SLANG_ATOM_NULL)
1560
op->a_id = parse_identifier(C);
1561
if (op->a_id == SLANG_ATOM_NULL)
1564
assert(*C->I == OP_END);
1567
while (*C->I != OP_END)
1568
if (!parse_child_operation(C, O, op, GL_FALSE))
1572
/* don't lookup the method (not yet anyway) */
1573
if (!C->parsing_builtin
1574
&& !slang_function_scope_find_by_name(O->funs, op->a_id, 1)) {
1577
id = slang_atom_pool_id(C->atoms, op->a_id);
1578
if (!is_constructor_name(id, op->a_id, O->structs)) {
1579
slang_info_log_error(C->L, "%s: undeclared function name.", id);
1587
GLboolean array_constructor = GL_FALSE;
1588
GLint array_constructor_size = 0;
1590
op->type = SLANG_OPER_CALL;
1591
op->a_id = parse_identifier(C);
1592
if (op->a_id == SLANG_ATOM_NULL)
1595
case FUNCTION_CALL_NONARRAY:
1596
/* Nothing to do. */
1598
case FUNCTION_CALL_ARRAY:
1599
/* Calling an array constructor. For example:
1600
* float[3](1.1, 2.2, 3.3);
1602
if (!O->allow_array_types) {
1603
slang_info_log_error(C->L,
1604
"array constructors not allowed "
1605
"in this GLSL version");
1609
/* parse the array constructor size */
1610
slang_operation array_size;
1611
array_constructor = GL_TRUE;
1612
slang_operation_construct(&array_size);
1613
if (!parse_expression(C, O, &array_size)) {
1614
slang_operation_destruct(&array_size);
1617
if (array_size.type != SLANG_OPER_LITERAL_INT) {
1618
slang_info_log_error(C->L,
1619
"constructor array size is not an integer");
1620
slang_operation_destruct(&array_size);
1623
array_constructor_size = (int) array_size.literal[0];
1624
op->array_constructor = GL_TRUE;
1625
slang_operation_destruct(&array_size);
1632
while (*C->I != OP_END)
1633
if (!parse_child_operation(C, O, op, GL_FALSE))
1637
if (array_constructor &&
1638
array_constructor_size != op->num_children) {
1639
slang_info_log_error(C->L, "number of parameters to array"
1640
" constructor does not match array size");
1644
if (!C->parsing_builtin
1645
&& !slang_function_scope_find_by_name(O->funs, op->a_id, 1)) {
1648
id = slang_atom_pool_id(C->atoms, op->a_id);
1649
if (!is_constructor_name(id, op->a_id, O->structs)) {
1650
slang_info_log_error(C->L, "%s: undeclared function name.", id);
1657
op->type = SLANG_OPER_FIELD;
1658
op->a_id = parse_identifier(C);
1659
if (op->a_id == SLANG_ATOM_NULL)
1661
if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
1664
case OP_POSTINCREMENT:
1665
op->type = SLANG_OPER_POSTINCREMENT;
1666
if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
1669
case OP_POSTDECREMENT:
1670
op->type = SLANG_OPER_POSTDECREMENT;
1671
if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
1680
slang_operation_destruct(oper);
1681
*oper = *ops; /* struct copy */
1687
/* parameter qualifier */
1688
#define PARAM_QUALIFIER_IN 0
1689
#define PARAM_QUALIFIER_OUT 1
1690
#define PARAM_QUALIFIER_INOUT 2
1692
/* function parameter array presence */
1693
#define PARAMETER_ARRAY_NOT_PRESENT 0
1694
#define PARAMETER_ARRAY_PRESENT 1
1697
parse_parameter_declaration(slang_parse_ctx * C, slang_output_ctx * O,
1698
slang_variable * param)
1700
int param_qual, precision_qual;
1702
/* parse and validate the parameter's type qualifiers (there can be
1703
* two at most) because not all combinations are valid
1705
if (!parse_type_qualifier(C, ¶m->type.qualifier))
1708
param_qual = *C->I++;
1709
switch (param_qual) {
1710
case PARAM_QUALIFIER_IN:
1711
if (param->type.qualifier != SLANG_QUAL_CONST
1712
&& param->type.qualifier != SLANG_QUAL_NONE) {
1713
slang_info_log_error(C->L, "Invalid type qualifier.");
1717
case PARAM_QUALIFIER_OUT:
1718
if (param->type.qualifier == SLANG_QUAL_NONE)
1719
param->type.qualifier = SLANG_QUAL_OUT;
1721
slang_info_log_error(C->L, "Invalid type qualifier.");
1725
case PARAM_QUALIFIER_INOUT:
1726
if (param->type.qualifier == SLANG_QUAL_NONE)
1727
param->type.qualifier = SLANG_QUAL_INOUT;
1729
slang_info_log_error(C->L, "Invalid type qualifier.");
1737
/* parse precision qualifier (lowp, mediump, highp */
1738
precision_qual = *C->I++;
1739
/* ignored at this time */
1740
(void) precision_qual;
1742
/* parse parameter's type specifier and name */
1743
if (!parse_type_specifier(C, O, ¶m->type.specifier))
1745
if (!parse_type_array_size(C, O, ¶m->type.array_len))
1747
param->a_name = parse_identifier(C);
1748
if (param->a_name == SLANG_ATOM_NULL)
1751
/* first-class array
1753
if (param->type.array_len >= 0) {
1754
slang_type_specifier p;
1756
slang_type_specifier_ctr(&p);
1757
if (!slang_type_specifier_copy(&p, ¶m->type.specifier)) {
1758
slang_type_specifier_dtr(&p);
1761
if (!convert_to_array(C, param, &p)) {
1762
slang_type_specifier_dtr(&p);
1765
slang_type_specifier_dtr(&p);
1766
param->array_len = param->type.array_len;
1769
/* if the parameter is an array, parse its size (the size must be
1770
* explicitly defined
1772
if (*C->I++ == PARAMETER_ARRAY_PRESENT) {
1773
slang_type_specifier p;
1775
if (param->type.array_len >= 0) {
1776
slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
1779
slang_type_specifier_ctr(&p);
1780
if (!slang_type_specifier_copy(&p, ¶m->type.specifier)) {
1781
slang_type_specifier_dtr(&p);
1784
if (!convert_to_array(C, param, &p)) {
1785
slang_type_specifier_dtr(&p);
1788
slang_type_specifier_dtr(&p);
1789
if (!parse_array_len(C, O, ¶m->array_len))
1794
/* calculate the parameter size */
1795
if (!calculate_var_size(C, O, param))
1798
/* TODO: allocate the local address here? */
1803
#define FUNCTION_ORDINARY 0
1804
#define FUNCTION_CONSTRUCTOR 1
1805
#define FUNCTION_OPERATOR 2
1807
/* function parameter */
1808
#define PARAMETER_NONE 0
1809
#define PARAMETER_NEXT 1
1812
#define OPERATOR_ADDASSIGN 1
1813
#define OPERATOR_SUBASSIGN 2
1814
#define OPERATOR_MULASSIGN 3
1815
#define OPERATOR_DIVASSIGN 4
1816
/*#define OPERATOR_MODASSIGN 5*/
1817
/*#define OPERATOR_LSHASSIGN 6*/
1818
/*#define OPERATOR_RSHASSIGN 7*/
1819
/*#define OPERATOR_ANDASSIGN 8*/
1820
/*#define OPERATOR_XORASSIGN 9*/
1821
/*#define OPERATOR_ORASSIGN 10*/
1822
#define OPERATOR_LOGICALXOR 11
1823
/*#define OPERATOR_BITOR 12*/
1824
/*#define OPERATOR_BITXOR 13*/
1825
/*#define OPERATOR_BITAND 14*/
1826
#define OPERATOR_LESS 15
1827
#define OPERATOR_GREATER 16
1828
#define OPERATOR_LESSEQUAL 17
1829
#define OPERATOR_GREATEREQUAL 18
1830
/*#define OPERATOR_LSHIFT 19*/
1831
/*#define OPERATOR_RSHIFT 20*/
1832
#define OPERATOR_MULTIPLY 21
1833
#define OPERATOR_DIVIDE 22
1834
/*#define OPERATOR_MODULUS 23*/
1835
#define OPERATOR_INCREMENT 24
1836
#define OPERATOR_DECREMENT 25
1837
#define OPERATOR_PLUS 26
1838
#define OPERATOR_MINUS 27
1839
/*#define OPERATOR_COMPLEMENT 28*/
1840
#define OPERATOR_NOT 29
1844
unsigned int o_code;
1846
} operator_names[] = {
1847
{OPERATOR_INCREMENT, "++"},
1848
{OPERATOR_ADDASSIGN, "+="},
1849
{OPERATOR_PLUS, "+"},
1850
{OPERATOR_DECREMENT, "--"},
1851
{OPERATOR_SUBASSIGN, "-="},
1852
{OPERATOR_MINUS, "-"},
1853
{OPERATOR_NOT, "!"},
1854
{OPERATOR_MULASSIGN, "*="},
1855
{OPERATOR_MULTIPLY, "*"},
1856
{OPERATOR_DIVASSIGN, "/="},
1857
{OPERATOR_DIVIDE, "/"},
1858
{OPERATOR_LESSEQUAL, "<="},
1859
/*{ OPERATOR_LSHASSIGN, "<<=" }, */
1860
/*{ OPERATOR_LSHIFT, "<<" }, */
1861
{OPERATOR_LESS, "<"},
1862
{OPERATOR_GREATEREQUAL, ">="},
1863
/*{ OPERATOR_RSHASSIGN, ">>=" }, */
1864
/*{ OPERATOR_RSHIFT, ">>" }, */
1865
{OPERATOR_GREATER, ">"},
1866
/*{ OPERATOR_MODASSIGN, "%=" }, */
1867
/*{ OPERATOR_MODULUS, "%" }, */
1868
/*{ OPERATOR_ANDASSIGN, "&=" }, */
1869
/*{ OPERATOR_BITAND, "&" }, */
1870
/*{ OPERATOR_ORASSIGN, "|=" }, */
1871
/*{ OPERATOR_BITOR, "|" }, */
1872
/*{ OPERATOR_COMPLEMENT, "~" }, */
1873
/*{ OPERATOR_XORASSIGN, "^=" }, */
1874
{OPERATOR_LOGICALXOR, "^^"},
1875
/*{ OPERATOR_BITXOR, "^" } */
1879
parse_operator_name(slang_parse_ctx * C)
1883
for (i = 0; i < sizeof(operator_names) / sizeof(*operator_names); i++) {
1884
if (operator_names[i].o_code == (unsigned int) (*C->I)) {
1886
slang_atom_pool_atom(C->atoms, operator_names[i].o_name);
1887
if (atom == SLANG_ATOM_NULL) {
1888
slang_info_log_memory(C->L);
1900
parse_function_prototype(slang_parse_ctx * C, slang_output_ctx * O,
1901
slang_function * func)
1904
/* parse function type and name */
1905
if (!parse_fully_specified_type(C, O, &func->header.type))
1910
case FUNCTION_ORDINARY:
1911
func->kind = SLANG_FUNC_ORDINARY;
1912
func->header.a_name = parse_identifier(C);
1913
if (func->header.a_name == SLANG_ATOM_NULL)
1916
case FUNCTION_CONSTRUCTOR:
1917
func->kind = SLANG_FUNC_CONSTRUCTOR;
1918
if (func->header.type.specifier.type == SLANG_SPEC_STRUCT)
1920
func->header.a_name =
1921
slang_atom_pool_atom(C->atoms,
1922
slang_type_specifier_type_to_string
1923
(func->header.type.specifier.type));
1924
if (func->header.a_name == SLANG_ATOM_NULL) {
1925
slang_info_log_memory(C->L);
1929
case FUNCTION_OPERATOR:
1930
func->kind = SLANG_FUNC_OPERATOR;
1931
func->header.a_name = parse_operator_name(C);
1932
if (func->header.a_name == SLANG_ATOM_NULL)
1939
if (!legal_identifier(func->header.a_name)) {
1940
slang_info_log_error(C->L, "illegal function name '%s'",
1941
(char *) func->header.a_name);
1945
/* parse function parameters */
1946
while (*C->I++ == PARAMETER_NEXT) {
1947
slang_variable *p = slang_variable_scope_grow(func->parameters);
1949
slang_info_log_memory(C->L);
1952
if (!parse_parameter_declaration(C, O, p))
1956
/* if the function returns a value, append a hidden __retVal 'out'
1957
* parameter that corresponds to the return value.
1959
if (_slang_function_has_return_value(func)) {
1960
slang_variable *p = slang_variable_scope_grow(func->parameters);
1961
slang_atom a_retVal = slang_atom_pool_atom(C->atoms, "__retVal");
1963
p->a_name = a_retVal;
1964
p->type = func->header.type;
1965
p->type.qualifier = SLANG_QUAL_OUT;
1968
/* function formal parameters and local variables share the same
1969
* scope, so save the information about param count in a seperate
1970
* place also link the scope to the global variable scope so when a
1971
* given identifier is not found here, the search process continues
1972
* in the global space
1974
func->param_count = func->parameters->num_variables;
1975
func->parameters->outer_scope = O->vars;
1981
parse_function_definition(slang_parse_ctx * C, slang_output_ctx * O,
1982
slang_function * func)
1984
slang_output_ctx o = *O;
1986
if (!parse_function_prototype(C, O, func))
1989
/* create function's body operation */
1990
func->body = (slang_operation *) _slang_alloc(sizeof(slang_operation));
1991
if (func->body == NULL) {
1992
slang_info_log_memory(C->L);
1995
if (!slang_operation_construct(func->body)) {
1996
_slang_free(func->body);
1998
slang_info_log_memory(C->L);
2002
/* to parse the body the parse context is modified in order to
2003
* capture parsed variables into function's local variable scope
2005
C->global_scope = GL_FALSE;
2006
o.vars = func->parameters;
2007
if (!parse_statement(C, &o, func->body))
2010
C->global_scope = GL_TRUE;
2015
initialize_global(slang_assemble_ctx * A, slang_variable * var)
2017
slang_operation op_id, op_assign;
2020
/* construct the left side of assignment */
2021
if (!slang_operation_construct(&op_id))
2023
op_id.type = SLANG_OPER_IDENTIFIER;
2024
op_id.a_id = var->a_name;
2026
/* put the variable into operation's scope */
2027
op_id.locals->variables =
2028
(slang_variable **) _slang_alloc(sizeof(slang_variable *));
2029
if (op_id.locals->variables == NULL) {
2030
slang_operation_destruct(&op_id);
2033
op_id.locals->num_variables = 1;
2034
op_id.locals->variables[0] = var;
2036
/* construct the assignment expression */
2037
if (!slang_operation_construct(&op_assign)) {
2038
op_id.locals->num_variables = 0;
2039
slang_operation_destruct(&op_id);
2042
op_assign.type = SLANG_OPER_ASSIGN;
2043
op_assign.children =
2044
(slang_operation *) _slang_alloc(2 * sizeof(slang_operation));
2045
if (op_assign.children == NULL) {
2046
slang_operation_destruct(&op_assign);
2047
op_id.locals->num_variables = 0;
2048
slang_operation_destruct(&op_id);
2051
op_assign.num_children = 2;
2052
op_assign.children[0] = op_id;
2053
op_assign.children[1] = *var->initializer;
2057
/* carefully destroy the operations */
2058
op_assign.num_children = 0;
2059
_slang_free(op_assign.children);
2060
op_assign.children = NULL;
2061
slang_operation_destruct(&op_assign);
2062
op_id.locals->num_variables = 0;
2063
slang_operation_destruct(&op_id);
2071
/* init declarator list */
2072
#define DECLARATOR_NONE 0
2073
#define DECLARATOR_NEXT 1
2075
/* variable declaration */
2076
#define VARIABLE_NONE 0
2077
#define VARIABLE_IDENTIFIER 1
2078
#define VARIABLE_INITIALIZER 2
2079
#define VARIABLE_ARRAY_EXPLICIT 3
2080
#define VARIABLE_ARRAY_UNKNOWN 4
2084
* Check if it's OK to re-declare a variable with the given new type.
2085
* This happens when applying layout qualifiers to gl_FragCoord or
2086
* (re)setting an array size.
2087
* If redeclaration is OK, return a pointer to the incoming variable
2088
* updated with new type info. Else return NULL;
2090
static slang_variable *
2091
redeclare_variable(slang_variable *var,
2092
const slang_fully_specified_type *type)
2094
if (slang_fully_specified_types_compatible(&var->type, type)) {
2095
/* replace orig var layout with new layout */
2096
var->type.layout = type->layout;
2098
/* XXX there may be other type updates in the future here */
2108
* Parse the initializer for a variable declaration.
2111
parse_init_declarator(slang_parse_ctx * C, slang_output_ctx * O,
2112
const slang_fully_specified_type * type)
2114
GET_CURRENT_CONTEXT(ctx); /* a hack */
2115
slang_variable *var = NULL, *prevDecl;
2118
/* empty init declatator (without name, e.g. "float ;") */
2119
if (*C->I++ == VARIABLE_NONE)
2122
a_name = parse_identifier(C);
2124
/* check if name is already in this scope */
2125
prevDecl = _slang_variable_locate(O->vars, a_name, C->global_scope);
2127
/* A var with this name has already been declared.
2128
* Check if redeclaring the var with a different type/layout is legal.
2130
if (C->global_scope) {
2131
var = redeclare_variable(prevDecl, type);
2134
slang_info_log_error(C->L,
2135
"declaration of '%s' conflicts with previous declaration",
2142
/* make room for a new variable and initialize it */
2143
var = slang_variable_scope_grow(O->vars);
2145
slang_info_log_memory(C->L);
2149
/* copy the declarator type qualifier/etc info, parse the identifier */
2150
var->type.qualifier = type->qualifier;
2151
var->type.centroid = type->centroid;
2152
var->type.precision = type->precision;
2153
var->type.specifier = type->specifier;/*new*/
2154
var->type.variant = type->variant;
2155
var->type.layout = type->layout;
2156
var->type.array_len = type->array_len;
2157
var->a_name = a_name;
2158
if (var->a_name == SLANG_ATOM_NULL)
2164
/* simple variable declarator - just copy the specifier */
2165
if (!slang_type_specifier_copy(&var->type.specifier, &type->specifier))
2168
case VARIABLE_INITIALIZER:
2169
/* initialized variable - copy the specifier and parse the expression */
2170
if (0 && type->array_len >= 0) {
2171
/* The type was something like "float[4]" */
2172
convert_to_array(C, var, &type->specifier);
2173
var->array_len = type->array_len;
2176
if (!slang_type_specifier_copy(&var->type.specifier, &type->specifier))
2180
(slang_operation *) _slang_alloc(sizeof(slang_operation));
2181
if (var->initializer == NULL) {
2182
slang_info_log_memory(C->L);
2185
if (!slang_operation_construct(var->initializer)) {
2186
_slang_free(var->initializer);
2187
var->initializer = NULL;
2188
slang_info_log_memory(C->L);
2191
if (!parse_expression(C, O, var->initializer))
2194
case VARIABLE_ARRAY_UNKNOWN:
2195
/* unsized array - mark it as array and copy the specifier to
2198
if (type->array_len >= 0) {
2199
slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
2202
if (!convert_to_array(C, var, &type->specifier))
2205
case VARIABLE_ARRAY_EXPLICIT:
2206
if (type->array_len >= 0) {
2207
/* the user is trying to do something like: float[2] x[3]; */
2208
slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
2211
if (!convert_to_array(C, var, &type->specifier))
2213
if (!parse_array_len(C, O, &var->array_len))
2220
/* allocate global address space for a variable with a known size */
2222
&& !(var->type.specifier.type == SLANG_SPEC_ARRAY
2223
&& var->array_len == 0)) {
2224
if (!calculate_var_size(C, O, var))
2228
/* emit code for global var decl */
2229
if (C->global_scope) {
2230
slang_assemble_ctx A;
2231
memset(&A, 0, sizeof(slang_assemble_ctx));
2232
A.allow_uniform_initializers = C->version > 110;
2234
A.space.funcs = O->funs;
2235
A.space.structs = O->structs;
2236
A.space.vars = O->vars;
2237
A.program = O->program;
2238
A.pragmas = O->pragmas;
2239
A.vartable = O->vartable;
2241
A.curFuncEndLabel = NULL;
2242
A.EmitContReturn = ctx->Shader.EmitContReturn;
2243
if (!_slang_codegen_global_variable(&A, var, C->type))
2247
/* initialize global variable */
2248
if (C->global_scope) {
2249
if (var->initializer != NULL) {
2250
slang_assemble_ctx A;
2251
memset(&A, 0, sizeof(slang_assemble_ctx));
2252
A.allow_uniform_initializers = C->version > 110;
2254
A.space.funcs = O->funs;
2255
A.space.structs = O->structs;
2256
A.space.vars = O->vars;
2257
if (!initialize_global(&A, var))
2262
if (var->type.qualifier == SLANG_QUAL_FIXEDINPUT &&
2263
var->a_name == slang_atom_pool_atom(C->atoms, "gl_FragCoord")) {
2264
/* set the program's PixelCenterInteger, OriginUpperLeft fields */
2265
struct gl_fragment_program *fragProg =
2266
(struct gl_fragment_program *) O->program;
2268
if (var->type.layout & SLANG_LAYOUT_UPPER_LEFT_BIT) {
2269
fragProg->OriginUpperLeft = GL_TRUE;
2271
if (var->type.layout & SLANG_LAYOUT_PIXEL_CENTER_INTEGER_BIT) {
2272
fragProg->PixelCenterInteger = GL_TRUE;
2280
* Parse a list of variable declarations. Each variable may have an
2284
parse_init_declarator_list(slang_parse_ctx * C, slang_output_ctx * O)
2286
slang_fully_specified_type type;
2288
/* parse the fully specified type, common to all declarators */
2289
if (!slang_fully_specified_type_construct(&type))
2291
if (!parse_fully_specified_type(C, O, &type)) {
2292
slang_fully_specified_type_destruct(&type);
2296
/* parse declarators, pass-in the parsed type */
2298
if (!parse_init_declarator(C, O, &type)) {
2299
slang_fully_specified_type_destruct(&type);
2303
while (*C->I++ == DECLARATOR_NEXT);
2305
slang_fully_specified_type_destruct(&type);
2311
* Parse a function definition or declaration.
2312
* \param C parsing context
2313
* \param O output context
2314
* \param definition if non-zero expect a definition, else a declaration
2315
* \param parsed_func_ret returns the parsed function
2316
* \return GL_TRUE if success, GL_FALSE if failure
2319
parse_function(slang_parse_ctx * C, slang_output_ctx * O, int definition,
2320
slang_function ** parsed_func_ret)
2322
slang_function parsed_func, *found_func;
2324
/* parse function definition/declaration */
2325
if (!slang_function_construct(&parsed_func))
2328
if (!parse_function_definition(C, O, &parsed_func)) {
2329
slang_function_destruct(&parsed_func);
2334
if (!parse_function_prototype(C, O, &parsed_func)) {
2335
slang_function_destruct(&parsed_func);
2340
/* find a function with a prototype matching the parsed one - only
2341
* the current scope is being searched to allow built-in function
2344
found_func = slang_function_scope_find(O->funs, &parsed_func, 0);
2345
if (found_func == NULL) {
2346
/* New function, add it to the function list */
2347
O->funs->functions =
2348
(slang_function *) _slang_realloc(O->funs->functions,
2349
O->funs->num_functions
2350
* sizeof(slang_function),
2351
(O->funs->num_functions + 1)
2352
* sizeof(slang_function));
2353
if (O->funs->functions == NULL) {
2354
/* Make sure that there are no functions marked, as the
2355
* allocation is currently NULL, in order to avoid
2356
* a potental segfault as we clean up later.
2358
O->funs->num_functions = 0;
2360
slang_info_log_memory(C->L);
2361
slang_function_destruct(&parsed_func);
2364
O->funs->functions[O->funs->num_functions] = parsed_func;
2365
O->funs->num_functions++;
2367
/* return the newly parsed function */
2368
*parsed_func_ret = &O->funs->functions[O->funs->num_functions - 1];
2371
/* previously defined or declared */
2372
/* TODO: check function return type qualifiers and specifiers */
2374
if (found_func->body != NULL) {
2375
slang_info_log_error(C->L, "%s: function already has a body.",
2376
slang_atom_pool_id(C->atoms,
2379
slang_function_destruct(&parsed_func);
2383
/* destroy the existing function declaration and replace it
2386
slang_function_destruct(found_func);
2387
*found_func = parsed_func;
2390
/* another declaration of the same function prototype - ignore it */
2391
slang_function_destruct(&parsed_func);
2394
/* return the found function */
2395
*parsed_func_ret = found_func;
2402
#define DECLARATION_FUNCTION_PROTOTYPE 1
2403
#define DECLARATION_INIT_DECLARATOR_LIST 2
2406
parse_declaration(slang_parse_ctx * C, slang_output_ctx * O)
2409
case DECLARATION_INIT_DECLARATOR_LIST:
2410
if (!parse_init_declarator_list(C, O))
2413
case DECLARATION_FUNCTION_PROTOTYPE:
2415
slang_function *dummy_func;
2417
if (!parse_function(C, O, 0, &dummy_func))
2428
parse_default_precision(slang_parse_ctx * C, slang_output_ctx * O)
2430
int precision, type;
2432
if (!O->allow_precision) {
2433
slang_info_log_error(C->L, "syntax error at \"precision\"");
2437
precision = *C->I++;
2438
switch (precision) {
2440
case PRECISION_MEDIUM:
2441
case PRECISION_HIGH:
2445
_mesa_problem(NULL, "unexpected precision %d at %s:%d\n",
2446
precision, __FILE__, __LINE__);
2452
case TYPE_SPECIFIER_FLOAT:
2453
case TYPE_SPECIFIER_INT:
2454
case TYPE_SPECIFIER_SAMPLER1D:
2455
case TYPE_SPECIFIER_SAMPLER2D:
2456
case TYPE_SPECIFIER_SAMPLER3D:
2457
case TYPE_SPECIFIER_SAMPLERCUBE:
2458
case TYPE_SPECIFIER_SAMPLER1DSHADOW:
2459
case TYPE_SPECIFIER_SAMPLER2DSHADOW:
2460
case TYPE_SPECIFIER_SAMPLER2DRECT:
2461
case TYPE_SPECIFIER_SAMPLER2DRECTSHADOW:
2462
case TYPE_SPECIFIER_SAMPLER_1D_ARRAY:
2463
case TYPE_SPECIFIER_SAMPLER_2D_ARRAY:
2464
case TYPE_SPECIFIER_SAMPLER_1D_ARRAY_SHADOW:
2465
case TYPE_SPECIFIER_SAMPLER_2D_ARRAY_SHADOW:
2469
_mesa_problem(NULL, "unexpected type %d at %s:%d\n",
2470
type, __FILE__, __LINE__);
2474
assert(type < TYPE_SPECIFIER_COUNT);
2475
O->default_precision[type] = precision;
2482
* Initialize the default precision for all types.
2483
* XXX this info isn't used yet.
2486
init_default_precision(slang_output_ctx *O, slang_unit_type type)
2489
for (i = 0; i < TYPE_SPECIFIER_COUNT; i++) {
2490
#if FEATURE_es2_glsl
2491
O->default_precision[i] = PRECISION_LOW;
2493
O->default_precision[i] = PRECISION_HIGH;
2497
if (type == SLANG_UNIT_VERTEX_SHADER) {
2498
O->default_precision[TYPE_SPECIFIER_FLOAT] = PRECISION_HIGH;
2499
O->default_precision[TYPE_SPECIFIER_INT] = PRECISION_HIGH;
2502
O->default_precision[TYPE_SPECIFIER_INT] = PRECISION_MEDIUM;
2508
parse_invariant(slang_parse_ctx * C, slang_output_ctx * O)
2510
if (O->allow_invariant) {
2511
slang_atom *a = parse_identifier(C);
2512
/* XXX not doing anything with this var yet */
2513
/*printf("ID: %s\n", (char*) a);*/
2517
slang_info_log_error(C->L, "syntax error at \"invariant\"");
2523
/* external declaration or default precision specifier */
2524
#define EXTERNAL_NULL 0
2525
#define EXTERNAL_FUNCTION_DEFINITION 1
2526
#define EXTERNAL_DECLARATION 2
2527
#define DEFAULT_PRECISION 3
2528
#define INVARIANT_STMT 4
2532
parse_code_unit(slang_parse_ctx * C, slang_code_unit * unit,
2533
struct gl_shader *shader)
2535
GET_CURRENT_CONTEXT(ctx);
2539
slang_function *mainFunc = NULL;
2541
if (unit->type == SLANG_UNIT_FRAGMENT_BUILTIN ||
2542
unit->type == SLANG_UNIT_FRAGMENT_SHADER) {
2543
maxRegs = ctx->Const.FragmentProgram.MaxTemps;
2546
assert(unit->type == SLANG_UNIT_VERTEX_BUILTIN ||
2547
unit->type == SLANG_UNIT_VERTEX_SHADER);
2548
maxRegs = ctx->Const.VertexProgram.MaxTemps;
2551
/* setup output context */
2552
o.funs = &unit->funs;
2553
o.structs = &unit->structs;
2554
o.vars = &unit->vars;
2555
o.program = shader ? shader->Program : NULL;
2556
o.pragmas = shader ? &shader->Pragmas : NULL;
2557
o.vartable = _slang_new_var_table(maxRegs);
2558
_slang_push_var_table(o.vartable);
2560
/* allow 'invariant' keyword? */
2561
#if FEATURE_es2_glsl
2562
o.allow_invariant = GL_TRUE;
2564
o.allow_invariant = (C->version >= 120) ? GL_TRUE : GL_FALSE;
2567
/* allow 'centroid' keyword? */
2568
o.allow_centroid = (C->version >= 120) ? GL_TRUE : GL_FALSE;
2570
/* allow 'lowp/mediump/highp' keywords? */
2571
#if FEATURE_es2_glsl
2572
o.allow_precision = GL_TRUE;
2574
o.allow_precision = (C->version >= 120) ? GL_TRUE : GL_FALSE;
2576
init_default_precision(&o, unit->type);
2578
/* allow 'float[]' keyword? */
2579
o.allow_array_types = (C->version >= 120) ? GL_TRUE : GL_FALSE;
2581
/* parse individual functions and declarations */
2582
while (*C->I != EXTERNAL_NULL) {
2584
case EXTERNAL_FUNCTION_DEFINITION:
2586
slang_function *func;
2587
success = parse_function(C, &o, 1, &func);
2588
if (success && strcmp((char *) func->header.a_name, "main") == 0) {
2594
case EXTERNAL_DECLARATION:
2595
success = parse_declaration(C, &o);
2597
case DEFAULT_PRECISION:
2598
success = parse_default_precision(C, &o);
2600
case INVARIANT_STMT:
2601
success = parse_invariant(C, &o);
2608
/* xxx free codegen */
2609
_slang_pop_var_table(o.vartable);
2616
/* assemble (generate code) for main() */
2617
slang_assemble_ctx A;
2618
memset(&A, 0, sizeof(slang_assemble_ctx));
2620
A.space.funcs = o.funs;
2621
A.space.structs = o.structs;
2622
A.space.vars = o.vars;
2623
A.program = o.program;
2624
A.pragmas = &shader->Pragmas;
2625
A.vartable = o.vartable;
2626
A.EmitContReturn = ctx->Shader.EmitContReturn;
2628
A.allow_uniform_initializers = C->version > 110;
2630
/* main() takes no parameters */
2631
if (mainFunc->param_count > 0) {
2632
slang_info_log_error(A.log, "main() takes no arguments");
2636
_slang_codegen_function(&A, mainFunc);
2638
shader->Main = GL_TRUE; /* this shader defines main() */
2640
shader->UnresolvedRefs = A.UnresolvedRefs;
2643
_slang_pop_var_table(o.vartable);
2644
_slang_delete_var_table(o.vartable);
2650
compile_binary(const unsigned char * prod, slang_code_unit * unit,
2652
slang_unit_type type, slang_info_log * infolog,
2653
slang_code_unit * builtin, slang_code_unit * downlink,
2654
struct gl_shader *shader)
2660
/* setup parse context */
2663
C.parsing_builtin = (builtin == NULL);
2664
C.global_scope = GL_TRUE;
2665
C.atoms = &unit->object->atompool;
2667
C.version = version;
2669
if (!check_revision(&C))
2672
if (downlink != NULL) {
2673
unit->vars.outer_scope = &downlink->vars;
2674
unit->funs.outer_scope = &downlink->funs;
2675
unit->structs.outer_scope = &downlink->structs;
2678
/* parse translation unit */
2679
return parse_code_unit(&C, unit, shader);
2683
compile_with_grammar(const char *source,
2684
slang_code_unit *unit,
2685
slang_unit_type type,
2686
slang_info_log *infolog,
2687
slang_code_unit *builtin,
2688
struct gl_shader *shader,
2689
struct gl_sl_pragmas *pragmas,
2690
unsigned int shader_type,
2691
unsigned int parsing_builtin)
2693
struct sl_pp_purify_options options;
2694
struct sl_pp_context *context;
2695
unsigned char *prod;
2697
unsigned int version;
2698
unsigned int maxVersion;
2700
char errmsg[200] = "";
2702
assert(shader_type == 1 || shader_type == 2);
2704
memset(&options, 0, sizeof(options));
2706
context = sl_pp_context_create(source, &options);
2708
slang_info_log_error(infolog, "out of memory");
2712
if (sl_pp_version(context, &version)) {
2713
slang_info_log_error(infolog, "%s", sl_pp_context_error_message(context));
2714
sl_pp_context_destroy(context);
2718
if (sl_pp_context_add_extension(context, "GL_ARB_draw_buffers") ||
2719
sl_pp_context_add_extension(context, "GL_ARB_texture_rectangle")) {
2720
slang_info_log_error(infolog, "%s", sl_pp_context_error_message(context));
2721
sl_pp_context_destroy(context);
2725
if (type == SLANG_UNIT_FRAGMENT_SHADER) {
2726
sl_pp_context_add_extension(context, "GL_ARB_fragment_coord_conventions");
2730
#if FEATURE_es2_glsl
2731
if (sl_pp_context_add_predefined(context, "GL_ES", "1") ||
2732
sl_pp_context_add_predefined(context, "GL_FRAGMENT_PRECISION_HIGH", "1")) {
2733
slang_info_log_error(infolog, "%s", sl_pp_context_error_message(context));
2734
sl_pp_context_destroy(context);
2739
#if FEATURE_ARB_shading_language_120
2741
#elif FEATURE_es2_glsl
2747
if (version > maxVersion ||
2748
(version != 100 && version != 110 && version != 120)) {
2749
slang_info_log_error(infolog,
2750
"language version %.2f is not supported.",
2752
sl_pp_context_destroy(context);
2756
/* Finally check the syntax and generate its binary representation. */
2757
result = sl_cl_compile(context,
2765
sl_pp_context_destroy(context);
2770
slang_info_log_error(infolog, errmsg);
2771
/* syntax error (possibly in library code) */
2776
s = (char *) _mesa_find_line_column((const GLubyte *) source,
2777
(const GLubyte *) source + pos,
2779
printf("Error on line %d, col %d: %s\n", line, col, s);
2785
/* Syntax is okay - translate it to internal representation. */
2786
if (!compile_binary(prod, unit, version, type, infolog, builtin,
2787
&builtin[SLANG_BUILTIN_TOTAL - 1],
2796
static const unsigned char slang_core_gc[] = {
2797
#include "library/slang_core_gc.h"
2800
static const unsigned char slang_120_core_gc[] = {
2801
#include "library/slang_120_core_gc.h"
2804
static const unsigned char slang_120_fragment_gc[] = {
2805
#include "library/slang_builtin_120_fragment_gc.h"
2808
static const unsigned char slang_common_builtin_gc[] = {
2809
#include "library/slang_common_builtin_gc.h"
2812
static const unsigned char slang_fragment_builtin_gc[] = {
2813
#include "library/slang_fragment_builtin_gc.h"
2816
static const unsigned char slang_vertex_builtin_gc[] = {
2817
#include "library/slang_vertex_builtin_gc.h"
2821
compile_object(const char *source,
2822
slang_code_object *object,
2823
slang_unit_type type,
2824
slang_info_log *infolog,
2825
struct gl_shader *shader,
2826
struct gl_sl_pragmas *pragmas)
2828
slang_code_unit *builtins = NULL;
2829
GLuint base_version = 110;
2830
unsigned int shader_type;
2831
unsigned int parsing_builtin;
2833
/* set shader type - the syntax is slightly different for different shaders */
2834
if (type == SLANG_UNIT_FRAGMENT_SHADER || type == SLANG_UNIT_FRAGMENT_BUILTIN) {
2840
/* enable language extensions */
2841
parsing_builtin = 1;
2843
/* if parsing user-specified shader, load built-in library */
2844
if (type == SLANG_UNIT_FRAGMENT_SHADER || type == SLANG_UNIT_VERTEX_SHADER) {
2845
/* compile core functionality first */
2846
if (!compile_binary(slang_core_gc,
2847
&object->builtin[SLANG_BUILTIN_CORE],
2849
SLANG_UNIT_FRAGMENT_BUILTIN, infolog,
2853
#if FEATURE_ARB_shading_language_120
2854
if (!compile_binary(slang_120_core_gc,
2855
&object->builtin[SLANG_BUILTIN_120_CORE],
2857
SLANG_UNIT_FRAGMENT_BUILTIN, infolog,
2858
NULL, &object->builtin[SLANG_BUILTIN_CORE], NULL))
2862
/* compile common functions and variables, link to core */
2863
if (!compile_binary(slang_common_builtin_gc,
2864
&object->builtin[SLANG_BUILTIN_COMMON],
2865
#if FEATURE_ARB_shading_language_120
2870
SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
2871
#if FEATURE_ARB_shading_language_120
2872
&object->builtin[SLANG_BUILTIN_120_CORE],
2874
&object->builtin[SLANG_BUILTIN_CORE],
2879
/* compile target-specific functions and variables, link to common */
2880
if (type == SLANG_UNIT_FRAGMENT_SHADER) {
2881
if (!compile_binary(slang_fragment_builtin_gc,
2882
&object->builtin[SLANG_BUILTIN_TARGET],
2884
SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
2885
&object->builtin[SLANG_BUILTIN_COMMON], NULL))
2887
#if FEATURE_ARB_shading_language_120
2888
if (!compile_binary(slang_120_fragment_gc,
2889
&object->builtin[SLANG_BUILTIN_TARGET],
2891
SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
2892
&object->builtin[SLANG_BUILTIN_COMMON], NULL))
2896
else if (type == SLANG_UNIT_VERTEX_SHADER) {
2897
if (!compile_binary(slang_vertex_builtin_gc,
2898
&object->builtin[SLANG_BUILTIN_TARGET],
2900
SLANG_UNIT_VERTEX_BUILTIN, infolog, NULL,
2901
&object->builtin[SLANG_BUILTIN_COMMON], NULL))
2905
/* disable language extensions */
2906
parsing_builtin = 0;
2908
builtins = object->builtin;
2911
/* compile the actual shader - pass-in built-in library for external shader */
2912
return compile_with_grammar(source,
2925
_slang_compile(GLcontext *ctx, struct gl_shader *shader)
2928
slang_info_log info_log;
2929
slang_code_object obj;
2930
slang_unit_type type;
2933
if (shader->Type == GL_VERTEX_SHADER) {
2934
type = SLANG_UNIT_VERTEX_SHADER;
2937
assert(shader->Type == GL_FRAGMENT_SHADER);
2938
type = SLANG_UNIT_FRAGMENT_SHADER;
2941
if (!shader->Source)
2944
ctx->Shader.MemPool = _slang_new_mempool(1024*1024);
2946
shader->Main = GL_FALSE;
2948
/* free the shader's old instructions, etc */
2949
_mesa_reference_program(ctx, &shader->Program, NULL);
2951
/* allocate new GPU program, parameter lists, etc. */
2952
if (shader->Type == GL_VERTEX_SHADER)
2953
progTarget = GL_VERTEX_PROGRAM_ARB;
2955
progTarget = GL_FRAGMENT_PROGRAM_ARB;
2956
shader->Program = ctx->Driver.NewProgram(ctx, progTarget, 1);
2957
shader->Program->Parameters = _mesa_new_parameter_list();
2958
shader->Program->Varying = _mesa_new_parameter_list();
2959
shader->Program->Attributes = _mesa_new_parameter_list();
2961
slang_info_log_construct(&info_log);
2962
_slang_code_object_ctr(&obj);
2964
success = compile_object(shader->Source,
2971
/* free shader's prev info log */
2972
if (shader->InfoLog) {
2973
free(shader->InfoLog);
2974
shader->InfoLog = NULL;
2977
if (info_log.text) {
2978
/* copy info-log string to shader object */
2979
shader->InfoLog = _mesa_strdup(info_log.text);
2982
if (info_log.error_flag) {
2986
slang_info_log_destruct(&info_log);
2987
_slang_code_object_dtr(&obj);
2989
_slang_delete_mempool((slang_mempool *) ctx->Shader.MemPool);
2990
ctx->Shader.MemPool = NULL;
2992
/* remove any reads of output registers */
2994
printf("Pre-remove output reads:\n");
2995
_mesa_print_program(shader->Program);
2997
_mesa_remove_output_reads(shader->Program, PROGRAM_OUTPUT);
2998
if (shader->Type == GL_VERTEX_SHADER) {
2999
/* and remove writes to varying vars in vertex programs */
3000
_mesa_remove_output_reads(shader->Program, PROGRAM_VARYING);
3003
printf("Post-remove output reads:\n");
3004
_mesa_print_program(shader->Program);
3007
shader->CompileStatus = success;
3010
if (shader->Pragmas.Optimize &&
3011
(ctx->Shader.Flags & GLSL_NO_OPT) == 0) {
3012
_mesa_optimize_program(ctx, shader->Program);
3014
if ((ctx->Shader.Flags & GLSL_NOP_VERT) &&
3015
shader->Program->Target == GL_VERTEX_PROGRAM_ARB) {
3016
_mesa_nop_vertex_program(ctx,
3017
(struct gl_vertex_program *) shader->Program);
3019
if ((ctx->Shader.Flags & GLSL_NOP_FRAG) &&
3020
shader->Program->Target == GL_FRAGMENT_PROGRAM_ARB) {
3021
_mesa_nop_fragment_program(ctx,
3022
(struct gl_fragment_program *) shader->Program);
3026
if (ctx->Shader.Flags & GLSL_LOG) {
3027
_mesa_write_shader_to_file(shader);
added
removed
src/mesa/shader/slang/slang_compile.c
