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Diffstat (limited to 'src/mesa/slang/slang_compile.c')
-rw-r--r--src/mesa/slang/slang_compile.c3103
1 files changed, 0 insertions, 3103 deletions
diff --git a/src/mesa/slang/slang_compile.c b/src/mesa/slang/slang_compile.c
deleted file mode 100644
index de1bb56cd9..0000000000
--- a/src/mesa/slang/slang_compile.c
+++ /dev/null
@@ -1,3103 +0,0 @@
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
- * Copyright (C) 2008 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/**
- * \file slang_compile.c
- * slang front-end compiler
- * \author Michal Krol
- */
-
-#include "main/imports.h"
-#include "main/context.h"
-#include "program/program.h"
-#include "program/programopt.h"
-#include "program/prog_optimize.h"
-#include "program/prog_print.h"
-#include "program/prog_parameter.h"
-#include "../../glsl/pp/sl_pp_public.h"
-#include "../../glsl/pp/sl_pp_purify.h"
-#include "../../glsl/cl/sl_cl_parse.h"
-#include "slang_codegen.h"
-#include "slang_compile.h"
-#include "slang_storage.h"
-#include "slang_log.h"
-#include "slang_mem.h"
-#include "slang_vartable.h"
-#include "slang_simplify.h"
-
-/*
- * This is a straightforward implementation of the slang front-end
- * compiler. Lots of error-checking functionality is missing but
- * every well-formed shader source should compile successfully and
- * execute as expected. However, some semantically ill-formed shaders
- * may be accepted resulting in undefined behaviour.
- */
-
-
-/** re-defined below, should be the same though */
-#define TYPE_SPECIFIER_COUNT 36
-
-
-/**
- * Check if the given identifier is legal.
- */
-static GLboolean
-legal_identifier(slang_atom name)
-{
- /* "gl_" is a reserved prefix */
- if (strncmp((char *) name, "gl_", 3) == 0) {
- return GL_FALSE;
- }
- return GL_TRUE;
-}
-
-
-/*
- * slang_code_unit
- */
-
-GLvoid
-_slang_code_unit_ctr(slang_code_unit * self,
- struct slang_code_object_ * object)
-{
- _slang_variable_scope_ctr(&self->vars);
- _slang_function_scope_ctr(&self->funs);
- _slang_struct_scope_ctr(&self->structs);
- self->object = object;
-}
-
-GLvoid
-_slang_code_unit_dtr(slang_code_unit * self)
-{
- slang_variable_scope_destruct(&self->vars);
- slang_function_scope_destruct(&self->funs);
- slang_struct_scope_destruct(&self->structs);
-}
-
-/*
- * slang_code_object
- */
-
-GLvoid
-_slang_code_object_ctr(slang_code_object * self)
-{
- GLuint i;
-
- for (i = 0; i < SLANG_BUILTIN_TOTAL; i++)
- _slang_code_unit_ctr(&self->builtin[i], self);
- _slang_code_unit_ctr(&self->unit, self);
- slang_atom_pool_construct(&self->atompool);
-}
-
-GLvoid
-_slang_code_object_dtr(slang_code_object * self)
-{
- GLuint i;
-
- for (i = 0; i < SLANG_BUILTIN_TOTAL; i++)
- _slang_code_unit_dtr(&self->builtin[i]);
- _slang_code_unit_dtr(&self->unit);
- slang_atom_pool_destruct(&self->atompool);
-}
-
-
-/* slang_parse_ctx */
-
-typedef struct slang_parse_ctx_
-{
- const unsigned char *I;
- slang_info_log *L;
- int parsing_builtin;
- GLboolean global_scope; /**< Is object being declared a global? */
- slang_atom_pool *atoms;
- slang_unit_type type; /**< Vertex vs. Fragment */
- GLuint version; /**< user-specified (or default) #version */
-} slang_parse_ctx;
-
-/* slang_output_ctx */
-
-typedef struct slang_output_ctx_
-{
- slang_variable_scope *vars;
- slang_function_scope *funs;
- slang_struct_scope *structs;
- struct gl_program *program;
- struct gl_sl_pragmas *pragmas;
- slang_var_table *vartable;
- GLuint default_precision[TYPE_SPECIFIER_COUNT];
- GLboolean allow_precision;
- GLboolean allow_invariant;
- GLboolean allow_centroid;
- GLboolean allow_array_types; /* float[] syntax */
-} slang_output_ctx;
-
-/* _slang_compile() */
-
-
-/* Debugging aid, print file/line where parsing error is detected */
-#define RETURN0 \
- do { \
- if (0) \
- printf("slang error at %s:%d\n", __FILE__, __LINE__); \
- return 0; \
- } while (0)
-
-
-static void
-parse_identifier_str(slang_parse_ctx * C, char **id)
-{
- *id = (char *) C->I;
- C->I += strlen(*id) + 1;
-}
-
-static slang_atom
-parse_identifier(slang_parse_ctx * C)
-{
- const char *id;
-
- id = (const char *) C->I;
- C->I += strlen(id) + 1;
- return slang_atom_pool_atom(C->atoms, id);
-}
-
-static int
-is_hex_digit(char c)
-{
- return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
-}
-
-static int
-parse_general_number(slang_parse_ctx *ctx, float *number)
-{
- char *flt = NULL;
-
- if (*ctx->I == '0') {
- int value = 0;
- const unsigned char *pi;
-
- if (ctx->I[1] == 'x' || ctx->I[1] == 'X') {
- ctx->I += 2;
- if (!is_hex_digit(*ctx->I)) {
- return 0;
- }
- do {
- int digit;
-
- if (*ctx->I >= '0' && *ctx->I <= '9') {
- digit = (int)(*ctx->I - '0');
- } else if (*ctx->I >= 'a' && *ctx->I <= 'f') {
- digit = (int)(*ctx->I - 'a') + 10;
- } else {
- digit = (int)(*ctx->I - 'A') + 10;
- }
- value = value * 0x10 + digit;
- ctx->I++;
- } while (is_hex_digit(*ctx->I));
- if (*ctx->I != '\0') {
- return 0;
- }
- ctx->I++;
- *number = (float)value;
- return 1;
- }
-
- pi = ctx->I;
- pi++;
- while (*pi >= '0' && *pi <= '7') {
- int digit;
-
- digit = (int)(*pi - '0');
- value = value * 010 + digit;
- pi++;
- }
- if (*pi == '\0') {
- pi++;
- ctx->I = pi;
- *number = (float)value;
- return 1;
- }
- }
-
- parse_identifier_str(ctx, &flt);
- flt = _mesa_strdup(flt);
- if (!flt) {
- return 0;
- }
- if (flt[strlen(flt) - 1] == 'f' || flt[strlen(flt) - 1] == 'F') {
- flt[strlen(flt) - 1] = '\0';
- }
- *number = _mesa_strtof(flt, (char **)NULL);
- free(flt);
-
- return 1;
-}
-
-static int
-parse_number(slang_parse_ctx * C, int *number)
-{
- const int radix = (int) (*C->I++);
-
- if (radix == 1) {
- float f = 0.0f;
-
- parse_general_number(C, &f);
- *number = (int)f;
- } else {
- *number = 0;
- while (*C->I != '\0') {
- int digit;
- if (*C->I >= '0' && *C->I <= '9')
- digit = (int) (*C->I - '0');
- else if (*C->I >= 'A' && *C->I <= 'Z')
- digit = (int) (*C->I - 'A') + 10;
- else
- digit = (int) (*C->I - 'a') + 10;
- *number = *number * radix + digit;
- C->I++;
- }
- C->I++;
- }
- if (*number > 65535)
- slang_info_log_warning(C->L, "%d: literal integer overflow.", *number);
- return 1;
-}
-
-static int
-parse_float(slang_parse_ctx * C, float *number)
-{
- if (*C->I == 1) {
- C->I++;
- parse_general_number(C, number);
- } else {
- char *integral = NULL;
- char *fractional = NULL;
- char *exponent = NULL;
- char *whole = NULL;
-
- parse_identifier_str(C, &integral);
- parse_identifier_str(C, &fractional);
- parse_identifier_str(C, &exponent);
-
- whole = (char *) _slang_alloc((strlen(integral) +
- strlen(fractional) +
- strlen(exponent) + 3) * sizeof(char));
- if (whole == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
-
- slang_string_copy(whole, integral);
- slang_string_concat(whole, ".");
- slang_string_concat(whole, fractional);
- slang_string_concat(whole, "E");
- slang_string_concat(whole, exponent);
-
- *number = _mesa_strtof(whole, (char **) NULL);
-
- _slang_free(whole);
- }
-
- return 1;
-}
-
-/* revision number - increment after each change affecting emitted output */
-#define REVISION 5
-
-static int
-check_revision(slang_parse_ctx * C)
-{
- if (*C->I != REVISION) {
- slang_info_log_error(C->L, "Internal compiler error.");
- RETURN0;
- }
- C->I++;
- return 1;
-}
-
-static int parse_statement(slang_parse_ctx *, slang_output_ctx *,
- slang_operation *);
-static int parse_expression(slang_parse_ctx *, slang_output_ctx *,
- slang_operation *);
-static int parse_type_specifier(slang_parse_ctx *, slang_output_ctx *,
- slang_type_specifier *);
-static int
-parse_type_array_size(slang_parse_ctx *C,
- slang_output_ctx *O,
- GLint *array_len);
-
-static GLboolean
-parse_array_len(slang_parse_ctx * C, slang_output_ctx * O, GLuint * len)
-{
- slang_operation array_size;
- slang_name_space space;
- GLboolean result;
-
- if (!slang_operation_construct(&array_size))
- return GL_FALSE;
- if (!parse_expression(C, O, &array_size)) {
- slang_operation_destruct(&array_size);
- return GL_FALSE;
- }
-
- space.funcs = O->funs;
- space.structs = O->structs;
- space.vars = O->vars;
-
- /* evaluate compile-time expression which is array size */
- _slang_simplify(&array_size, &space, C->atoms);
-
- if (array_size.type == SLANG_OPER_LITERAL_INT) {
- result = GL_TRUE;
- *len = (GLint) array_size.literal[0];
- } else if (array_size.type == SLANG_OPER_IDENTIFIER) {
- slang_variable *var = _slang_variable_locate(array_size.locals, array_size.a_id, GL_TRUE);
- if (!var) {
- slang_info_log_error(C->L, "undefined variable '%s'",
- (char *) array_size.a_id);
- result = GL_FALSE;
- } else if (var->type.qualifier == SLANG_QUAL_CONST &&
- var->type.specifier.type == SLANG_SPEC_INT) {
- if (var->initializer &&
- var->initializer->type == SLANG_OPER_LITERAL_INT) {
- *len = (GLint) var->initializer->literal[0];
- result = GL_TRUE;
- } else {
- slang_info_log_error(C->L, "unable to parse array size declaration");
- result = GL_FALSE;
- }
- } else {
- slang_info_log_error(C->L, "unable to parse array size declaration");
- result = GL_FALSE;
- }
- } else {
- result = GL_FALSE;
- }
-
- slang_operation_destruct(&array_size);
- return result;
-}
-
-static GLboolean
-calculate_var_size(slang_parse_ctx * C, slang_output_ctx * O,
- slang_variable * var)
-{
- slang_storage_aggregate agg;
-
- if (!slang_storage_aggregate_construct(&agg))
- return GL_FALSE;
- if (!_slang_aggregate_variable(&agg, &var->type.specifier, var->array_len,
- O->funs, O->structs, O->vars, C->atoms)) {
- slang_storage_aggregate_destruct(&agg);
- return GL_FALSE;
- }
- var->size = _slang_sizeof_aggregate(&agg);
- slang_storage_aggregate_destruct(&agg);
- return GL_TRUE;
-}
-
-static void
-promote_type_to_array(slang_parse_ctx *C,
- slang_fully_specified_type *type,
- GLint array_len)
-{
- slang_type_specifier *baseType =
- slang_type_specifier_new(type->specifier.type, NULL, NULL);
-
- type->specifier.type = SLANG_SPEC_ARRAY;
- type->specifier._array = baseType;
- type->array_len = array_len;
-}
-
-
-static GLboolean
-convert_to_array(slang_parse_ctx * C, slang_variable * var,
- const slang_type_specifier * sp)
-{
- /* sized array - mark it as array, copy the specifier to the array element
- * and parse the expression */
- var->type.specifier.type = SLANG_SPEC_ARRAY;
- var->type.specifier._array = (slang_type_specifier *)
- _slang_alloc(sizeof(slang_type_specifier));
- if (var->type.specifier._array == NULL) {
- slang_info_log_memory(C->L);
- return GL_FALSE;
- }
- slang_type_specifier_ctr(var->type.specifier._array);
- return slang_type_specifier_copy(var->type.specifier._array, sp);
-}
-
-/* structure field */
-#define FIELD_NONE 0
-#define FIELD_NEXT 1
-#define FIELD_ARRAY 2
-
-static GLboolean
-parse_struct_field_var(slang_parse_ctx * C, slang_output_ctx * O,
- slang_variable * var, slang_atom a_name,
- const slang_type_specifier * sp,
- GLuint array_len)
-{
- var->a_name = a_name;
- if (var->a_name == SLANG_ATOM_NULL)
- return GL_FALSE;
-
- switch (*C->I++) {
- case FIELD_NONE:
- if (array_len != -1) {
- if (!convert_to_array(C, var, sp))
- return GL_FALSE;
- var->array_len = array_len;
- }
- else {
- if (!slang_type_specifier_copy(&var->type.specifier, sp))
- return GL_FALSE;
- }
- break;
- case FIELD_ARRAY:
- if (array_len != -1)
- return GL_FALSE;
- if (!convert_to_array(C, var, sp))
- return GL_FALSE;
- if (!parse_array_len(C, O, &var->array_len))
- return GL_FALSE;
- break;
- default:
- return GL_FALSE;
- }
-
- return calculate_var_size(C, O, var);
-}
-
-static int
-parse_struct_field(slang_parse_ctx * C, slang_output_ctx * O,
- slang_struct * st, slang_type_specifier * sp)
-{
- slang_output_ctx o = *O;
- GLint array_len;
-
- o.structs = st->structs;
- if (!parse_type_specifier(C, &o, sp))
- RETURN0;
- if (!parse_type_array_size(C, &o, &array_len))
- RETURN0;
-
- do {
- slang_atom a_name;
- slang_variable *var = slang_variable_scope_grow(st->fields);
- if (!var) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- a_name = parse_identifier(C);
- if (_slang_variable_locate(st->fields, a_name, GL_FALSE)) {
- slang_info_log_error(C->L, "duplicate field '%s'", (char *) a_name);
- RETURN0;
- }
-
- if (!parse_struct_field_var(C, &o, var, a_name, sp, array_len))
- RETURN0;
- }
- while (*C->I++ != FIELD_NONE);
-
- return 1;
-}
-
-static int
-parse_struct(slang_parse_ctx * C, slang_output_ctx * O, slang_struct ** st)
-{
- slang_atom a_name;
- const char *name;
-
- /* parse struct name (if any) and make sure it is unique in current scope */
- a_name = parse_identifier(C);
- if (a_name == SLANG_ATOM_NULL)
- RETURN0;
-
- name = slang_atom_pool_id(C->atoms, a_name);
- if (name[0] != '\0'
- && slang_struct_scope_find(O->structs, a_name, 0) != NULL) {
- slang_info_log_error(C->L, "%s: duplicate type name.", name);
- RETURN0;
- }
-
- /* set-up a new struct */
- *st = (slang_struct *) _slang_alloc(sizeof(slang_struct));
- if (*st == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- if (!slang_struct_construct(*st)) {
- _slang_free(*st);
- *st = NULL;
- slang_info_log_memory(C->L);
- RETURN0;
- }
- (**st).a_name = a_name;
- (**st).structs->outer_scope = O->structs;
-
- /* parse individual struct fields */
- do {
- slang_type_specifier sp;
-
- slang_type_specifier_ctr(&sp);
- if (!parse_struct_field(C, O, *st, &sp)) {
- slang_type_specifier_dtr(&sp);
- RETURN0;
- }
- slang_type_specifier_dtr(&sp);
- }
- while (*C->I++ != FIELD_NONE);
-
- /* if named struct, copy it to current scope */
- if (name[0] != '\0') {
- slang_struct *s;
-
- O->structs->structs =
- (slang_struct *) _slang_realloc(O->structs->structs,
- O->structs->num_structs
- * sizeof(slang_struct),
- (O->structs->num_structs + 1)
- * sizeof(slang_struct));
- if (O->structs->structs == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- s = &O->structs->structs[O->structs->num_structs];
- if (!slang_struct_construct(s))
- RETURN0;
- O->structs->num_structs++;
- if (!slang_struct_copy(s, *st))
- RETURN0;
- }
-
- return 1;
-}
-
-
-/* invariant qualifer */
-#define TYPE_VARIANT 90
-#define TYPE_INVARIANT 91
-
-static int
-parse_type_variant(slang_parse_ctx * C, slang_type_variant *variant)
-{
- GLuint invariant = *C->I++;
- switch (invariant) {
- case TYPE_VARIANT:
- *variant = SLANG_VARIANT;
- return 1;
- case TYPE_INVARIANT:
- *variant = SLANG_INVARIANT;
- return 1;
- default:
- RETURN0;
- }
-}
-
-
-/* centroid qualifer */
-#define TYPE_CENTER 95
-#define TYPE_CENTROID 96
-
-static int
-parse_type_centroid(slang_parse_ctx * C, slang_type_centroid *centroid)
-{
- GLuint c = *C->I++;
- switch (c) {
- case TYPE_CENTER:
- *centroid = SLANG_CENTER;
- return 1;
- case TYPE_CENTROID:
- *centroid = SLANG_CENTROID;
- return 1;
- default:
- RETURN0;
- }
-}
-
-
-/* Layout qualifiers */
-#define LAYOUT_QUALIFIER_NONE 0
-#define LAYOUT_QUALIFIER_UPPER_LEFT 1
-#define LAYOUT_QUALIFIER_PIXEL_CENTER_INTEGER 2
-
-static int
-parse_layout_qualifiers(slang_parse_ctx * C, slang_layout_qualifier *layout)
-{
- *layout = 0x0;
-
- /* the layout qualifiers come as a list of LAYOUT_QUALIFER_x tokens,
- * terminated by LAYOUT_QUALIFIER_NONE.
- */
- while (1) {
- GLuint c = *C->I++;
- switch (c) {
- case LAYOUT_QUALIFIER_NONE:
- /* end of list of qualifiers */
- return 1;
- case LAYOUT_QUALIFIER_UPPER_LEFT:
- *layout |= SLANG_LAYOUT_UPPER_LEFT_BIT;
- break;
- case LAYOUT_QUALIFIER_PIXEL_CENTER_INTEGER:
- *layout |= SLANG_LAYOUT_PIXEL_CENTER_INTEGER_BIT;
- break;
- default:
- assert(0 && "Bad layout qualifier");
- }
- }
-}
-
-
-/* type qualifier */
-#define TYPE_QUALIFIER_NONE 0
-#define TYPE_QUALIFIER_CONST 1
-#define TYPE_QUALIFIER_ATTRIBUTE 2
-#define TYPE_QUALIFIER_VARYING 3
-#define TYPE_QUALIFIER_UNIFORM 4
-#define TYPE_QUALIFIER_FIXEDOUTPUT 5
-#define TYPE_QUALIFIER_FIXEDINPUT 6
-
-static int
-parse_type_qualifier(slang_parse_ctx * C, slang_type_qualifier * qual)
-{
- GLuint qualifier = *C->I++;
- switch (qualifier) {
- case TYPE_QUALIFIER_NONE:
- *qual = SLANG_QUAL_NONE;
- break;
- case TYPE_QUALIFIER_CONST:
- *qual = SLANG_QUAL_CONST;
- break;
- case TYPE_QUALIFIER_ATTRIBUTE:
- *qual = SLANG_QUAL_ATTRIBUTE;
- break;
- case TYPE_QUALIFIER_VARYING:
- *qual = SLANG_QUAL_VARYING;
- break;
- case TYPE_QUALIFIER_UNIFORM:
- *qual = SLANG_QUAL_UNIFORM;
- break;
- case TYPE_QUALIFIER_FIXEDOUTPUT:
- *qual = SLANG_QUAL_FIXEDOUTPUT;
- break;
- case TYPE_QUALIFIER_FIXEDINPUT:
- *qual = SLANG_QUAL_FIXEDINPUT;
- break;
- default:
- RETURN0;
- }
- return 1;
-}
-
-/* type specifier */
-#define TYPE_SPECIFIER_VOID 0
-#define TYPE_SPECIFIER_BOOL 1
-#define TYPE_SPECIFIER_BVEC2 2
-#define TYPE_SPECIFIER_BVEC3 3
-#define TYPE_SPECIFIER_BVEC4 4
-#define TYPE_SPECIFIER_INT 5
-#define TYPE_SPECIFIER_IVEC2 6
-#define TYPE_SPECIFIER_IVEC3 7
-#define TYPE_SPECIFIER_IVEC4 8
-#define TYPE_SPECIFIER_FLOAT 9
-#define TYPE_SPECIFIER_VEC2 10
-#define TYPE_SPECIFIER_VEC3 11
-#define TYPE_SPECIFIER_VEC4 12
-#define TYPE_SPECIFIER_MAT2 13
-#define TYPE_SPECIFIER_MAT3 14
-#define TYPE_SPECIFIER_MAT4 15
-#define TYPE_SPECIFIER_SAMPLER1D 16
-#define TYPE_SPECIFIER_SAMPLER2D 17
-#define TYPE_SPECIFIER_SAMPLER3D 18
-#define TYPE_SPECIFIER_SAMPLERCUBE 19
-#define TYPE_SPECIFIER_SAMPLER1DSHADOW 20
-#define TYPE_SPECIFIER_SAMPLER2DSHADOW 21
-#define TYPE_SPECIFIER_SAMPLER2DRECT 22
-#define TYPE_SPECIFIER_SAMPLER2DRECTSHADOW 23
-#define TYPE_SPECIFIER_STRUCT 24
-#define TYPE_SPECIFIER_TYPENAME 25
-#define TYPE_SPECIFIER_MAT23 26
-#define TYPE_SPECIFIER_MAT32 27
-#define TYPE_SPECIFIER_MAT24 28
-#define TYPE_SPECIFIER_MAT42 29
-#define TYPE_SPECIFIER_MAT34 30
-#define TYPE_SPECIFIER_MAT43 31
-#define TYPE_SPECIFIER_SAMPLER_1D_ARRAY 32
-#define TYPE_SPECIFIER_SAMPLER_2D_ARRAY 33
-#define TYPE_SPECIFIER_SAMPLER_1D_ARRAY_SHADOW 34
-#define TYPE_SPECIFIER_SAMPLER_2D_ARRAY_SHADOW 35
-#define TYPE_SPECIFIER_COUNT 36
-
-static int
-parse_type_specifier(slang_parse_ctx * C, slang_output_ctx * O,
- slang_type_specifier * spec)
-{
- int type = *C->I++;
- switch (type) {
- case TYPE_SPECIFIER_VOID:
- spec->type = SLANG_SPEC_VOID;
- break;
- case TYPE_SPECIFIER_BOOL:
- spec->type = SLANG_SPEC_BOOL;
- break;
- case TYPE_SPECIFIER_BVEC2:
- spec->type = SLANG_SPEC_BVEC2;
- break;
- case TYPE_SPECIFIER_BVEC3:
- spec->type = SLANG_SPEC_BVEC3;
- break;
- case TYPE_SPECIFIER_BVEC4:
- spec->type = SLANG_SPEC_BVEC4;
- break;
- case TYPE_SPECIFIER_INT:
- spec->type = SLANG_SPEC_INT;
- break;
- case TYPE_SPECIFIER_IVEC2:
- spec->type = SLANG_SPEC_IVEC2;
- break;
- case TYPE_SPECIFIER_IVEC3:
- spec->type = SLANG_SPEC_IVEC3;
- break;
- case TYPE_SPECIFIER_IVEC4:
- spec->type = SLANG_SPEC_IVEC4;
- break;
- case TYPE_SPECIFIER_FLOAT:
- spec->type = SLANG_SPEC_FLOAT;
- break;
- case TYPE_SPECIFIER_VEC2:
- spec->type = SLANG_SPEC_VEC2;
- break;
- case TYPE_SPECIFIER_VEC3:
- spec->type = SLANG_SPEC_VEC3;
- break;
- case TYPE_SPECIFIER_VEC4:
- spec->type = SLANG_SPEC_VEC4;
- break;
- case TYPE_SPECIFIER_MAT2:
- spec->type = SLANG_SPEC_MAT2;
- break;
- case TYPE_SPECIFIER_MAT3:
- spec->type = SLANG_SPEC_MAT3;
- break;
- case TYPE_SPECIFIER_MAT4:
- spec->type = SLANG_SPEC_MAT4;
- break;
- case TYPE_SPECIFIER_MAT23:
- spec->type = SLANG_SPEC_MAT23;
- break;
- case TYPE_SPECIFIER_MAT32:
- spec->type = SLANG_SPEC_MAT32;
- break;
- case TYPE_SPECIFIER_MAT24:
- spec->type = SLANG_SPEC_MAT24;
- break;
- case TYPE_SPECIFIER_MAT42:
- spec->type = SLANG_SPEC_MAT42;
- break;
- case TYPE_SPECIFIER_MAT34:
- spec->type = SLANG_SPEC_MAT34;
- break;
- case TYPE_SPECIFIER_MAT43:
- spec->type = SLANG_SPEC_MAT43;
- break;
- case TYPE_SPECIFIER_SAMPLER1D:
- spec->type = SLANG_SPEC_SAMPLER_1D;
- break;
- case TYPE_SPECIFIER_SAMPLER2D:
- spec->type = SLANG_SPEC_SAMPLER_2D;
- break;
- case TYPE_SPECIFIER_SAMPLER3D:
- spec->type = SLANG_SPEC_SAMPLER_3D;
- break;
- case TYPE_SPECIFIER_SAMPLERCUBE:
- spec->type = SLANG_SPEC_SAMPLER_CUBE;
- break;
- case TYPE_SPECIFIER_SAMPLER2DRECT:
- spec->type = SLANG_SPEC_SAMPLER_RECT;
- break;
- case TYPE_SPECIFIER_SAMPLER1DSHADOW:
- spec->type = SLANG_SPEC_SAMPLER_1D_SHADOW;
- break;
- case TYPE_SPECIFIER_SAMPLER2DSHADOW:
- spec->type = SLANG_SPEC_SAMPLER_2D_SHADOW;
- break;
- case TYPE_SPECIFIER_SAMPLER2DRECTSHADOW:
- spec->type = SLANG_SPEC_SAMPLER_RECT_SHADOW;
- break;
- case TYPE_SPECIFIER_SAMPLER_1D_ARRAY:
- spec->type = SLANG_SPEC_SAMPLER_1D_ARRAY;
- break;
- case TYPE_SPECIFIER_SAMPLER_2D_ARRAY:
- spec->type = SLANG_SPEC_SAMPLER_2D_ARRAY;
- break;
- case TYPE_SPECIFIER_SAMPLER_1D_ARRAY_SHADOW:
- spec->type = SLANG_SPEC_SAMPLER_1D_ARRAY_SHADOW;
- break;
- case TYPE_SPECIFIER_SAMPLER_2D_ARRAY_SHADOW:
- spec->type = SLANG_SPEC_SAMPLER_2D_ARRAY_SHADOW;
- break;
- case TYPE_SPECIFIER_STRUCT:
- spec->type = SLANG_SPEC_STRUCT;
- if (!parse_struct(C, O, &spec->_struct))
- RETURN0;
- break;
- case TYPE_SPECIFIER_TYPENAME:
- spec->type = SLANG_SPEC_STRUCT;
- {
- slang_atom a_name;
- slang_struct *stru;
-
- a_name = parse_identifier(C);
- if (a_name == NULL)
- RETURN0;
-
- stru = slang_struct_scope_find(O->structs, a_name, 1);
- if (stru == NULL) {
- slang_info_log_error(C->L, "undeclared type name '%s'",
- slang_atom_pool_id(C->atoms, a_name));
- RETURN0;
- }
-
- spec->_struct = (slang_struct *) _slang_alloc(sizeof(slang_struct));
- if (spec->_struct == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- if (!slang_struct_construct(spec->_struct)) {
- _slang_free(spec->_struct);
- spec->_struct = NULL;
- RETURN0;
- }
- if (!slang_struct_copy(spec->_struct, stru))
- RETURN0;
- }
- break;
- default:
- RETURN0;
- }
- return 1;
-}
-
-#define TYPE_SPECIFIER_NONARRAY 0
-#define TYPE_SPECIFIER_ARRAY 1
-
-static int
-parse_type_array_size(slang_parse_ctx *C,
- slang_output_ctx *O,
- GLint *array_len)
-{
- GLuint size;
-
- switch (*C->I++) {
- case TYPE_SPECIFIER_NONARRAY:
- *array_len = -1; /* -1 = not an array */
- break;
- case TYPE_SPECIFIER_ARRAY:
- if (!parse_array_len(C, O, &size))
- RETURN0;
- *array_len = (GLint) size;
- break;
- default:
- assert(0);
- RETURN0;
- }
- return 1;
-}
-
-#define PRECISION_DEFAULT 0
-#define PRECISION_LOW 1
-#define PRECISION_MEDIUM 2
-#define PRECISION_HIGH 3
-
-static int
-parse_type_precision(slang_parse_ctx *C,
- slang_type_precision *precision)
-{
- GLint prec = *C->I++;
- switch (prec) {
- case PRECISION_DEFAULT:
- *precision = SLANG_PREC_DEFAULT;
- return 1;
- case PRECISION_LOW:
- *precision = SLANG_PREC_LOW;
- return 1;
- case PRECISION_MEDIUM:
- *precision = SLANG_PREC_MEDIUM;
- return 1;
- case PRECISION_HIGH:
- *precision = SLANG_PREC_HIGH;
- return 1;
- default:
- RETURN0;
- }
-}
-
-
-/* parameter qualifier */
-#define PARAM_QUALIFIER_IN 0
-#define PARAM_QUALIFIER_OUT 1
-#define PARAM_QUALIFIER_INOUT 2
-#define PARAM_QUALIFIER_NONE 3
-static int
-parse_varying_qualifier(slang_parse_ctx * C, slang_fully_specified_type *type)
-{
- int param_qual = *C->I++;
-
- if (type->qualifier != SLANG_QUAL_VARYING &&
- param_qual != PARAM_QUALIFIER_NONE) {
- slang_info_log_error(C->L, "Invalid type qualifier.");
- RETURN0;
- }
- switch (param_qual) {
- case PARAM_QUALIFIER_IN:
- case PARAM_QUALIFIER_NONE:
- type->varying_kind = SLANG_VARYING_IN;
- break;
- case PARAM_QUALIFIER_OUT:
- type->varying_kind = SLANG_VARYING_OUT;
- break;
- case PARAM_QUALIFIER_INOUT:
- slang_info_log_error(C->L, "Invalid type qualifier.");
- RETURN0;
- break;
- default:
- RETURN0;
- }
- return 1;
-}
-
-static int
-parse_fully_specified_type(slang_parse_ctx * C, slang_output_ctx * O,
- slang_fully_specified_type * type)
-{
- if (!parse_layout_qualifiers(C, &type->layout))
- RETURN0;
-
- if (!parse_type_variant(C, &type->variant))
- RETURN0;
-
- if (!parse_type_centroid(C, &type->centroid))
- RETURN0;
-
- if (!parse_type_qualifier(C, &type->qualifier))
- RETURN0;
-
- if (!parse_varying_qualifier(C, type))
- RETURN0;
-
- if (!parse_type_precision(C, &type->precision))
- RETURN0;
-
- if (!parse_type_specifier(C, O, &type->specifier))
- RETURN0;
-
- if (!parse_type_array_size(C, O, &type->array_len))
- RETURN0;
-
- if (!O->allow_invariant && type->variant == SLANG_INVARIANT) {
- slang_info_log_error(C->L,
- "'invariant' keyword not allowed (perhaps set #version 120)");
- RETURN0;
- }
-
- if (!O->allow_centroid && type->centroid == SLANG_CENTROID) {
- slang_info_log_error(C->L,
- "'centroid' keyword not allowed (perhaps set #version 120)");
- RETURN0;
- }
- else if (type->centroid == SLANG_CENTROID &&
- type->qualifier != SLANG_QUAL_VARYING) {
- slang_info_log_error(C->L,
- "'centroid' keyword only allowed for varying vars");
- RETURN0;
- }
-
-
- /* need this?
- if (type->qualifier != SLANG_QUAL_VARYING &&
- type->variant == SLANG_INVARIANT) {
- slang_info_log_error(C->L,
- "invariant qualifer only allowed for varying vars");
- RETURN0;
- }
- */
-
- if (O->allow_precision) {
- if (type->precision == SLANG_PREC_DEFAULT) {
- assert(type->specifier.type < TYPE_SPECIFIER_COUNT);
- /* use the default precision for this datatype */
- type->precision = O->default_precision[type->specifier.type];
- }
- }
- else {
- /* only default is allowed */
- if (type->precision != SLANG_PREC_DEFAULT) {
- slang_info_log_error(C->L, "precision qualifiers not allowed");
- RETURN0;
- }
- }
-
- if (!O->allow_array_types && type->array_len >= 0) {
- slang_info_log_error(C->L, "first-class array types not allowed");
- RETURN0;
- }
-
- if (type->array_len >= 0) {
- /* convert type to array type (ex: convert "int" to "array of int" */
- promote_type_to_array(C, type, type->array_len);
- }
-
- return 1;
-}
-
-/* operation */
-#define OP_END 0
-#define OP_BLOCK_BEGIN_NO_NEW_SCOPE 1
-#define OP_BLOCK_BEGIN_NEW_SCOPE 2
-#define OP_DECLARE 3
-#define OP_ASM 4
-#define OP_BREAK 5
-#define OP_CONTINUE 6
-#define OP_DISCARD 7
-#define OP_RETURN 8
-#define OP_EXPRESSION 9
-#define OP_IF 10
-#define OP_WHILE 11
-#define OP_DO 12
-#define OP_FOR 13
-#define OP_PUSH_VOID 14
-#define OP_PUSH_BOOL 15
-#define OP_PUSH_INT 16
-#define OP_PUSH_FLOAT 17
-#define OP_PUSH_IDENTIFIER 18
-#define OP_SEQUENCE 19
-#define OP_ASSIGN 20
-#define OP_ADDASSIGN 21
-#define OP_SUBASSIGN 22
-#define OP_MULASSIGN 23
-#define OP_DIVASSIGN 24
-/*#define OP_MODASSIGN 25*/
-/*#define OP_LSHASSIGN 26*/
-/*#define OP_RSHASSIGN 27*/
-/*#define OP_ORASSIGN 28*/
-/*#define OP_XORASSIGN 29*/
-/*#define OP_ANDASSIGN 30*/
-#define OP_SELECT 31
-#define OP_LOGICALOR 32
-#define OP_LOGICALXOR 33
-#define OP_LOGICALAND 34
-/*#define OP_BITOR 35*/
-/*#define OP_BITXOR 36*/
-/*#define OP_BITAND 37*/
-#define OP_EQUAL 38
-#define OP_NOTEQUAL 39
-#define OP_LESS 40
-#define OP_GREATER 41
-#define OP_LESSEQUAL 42
-#define OP_GREATEREQUAL 43
-/*#define OP_LSHIFT 44*/
-/*#define OP_RSHIFT 45*/
-#define OP_ADD 46
-#define OP_SUBTRACT 47
-#define OP_MULTIPLY 48
-#define OP_DIVIDE 49
-/*#define OP_MODULUS 50*/
-#define OP_PREINCREMENT 51
-#define OP_PREDECREMENT 52
-#define OP_PLUS 53
-#define OP_MINUS 54
-/*#define OP_COMPLEMENT 55*/
-#define OP_NOT 56
-#define OP_SUBSCRIPT 57
-#define OP_CALL 58
-#define OP_FIELD 59
-#define OP_POSTINCREMENT 60
-#define OP_POSTDECREMENT 61
-#define OP_PRECISION 62
-#define OP_METHOD 63
-
-
-/**
- * When parsing a compound production, this function is used to parse the
- * children.
- * For example, a while-loop compound will have two children, the
- * while condition expression and the loop body. So, this function will
- * be called twice to parse those two sub-expressions.
- * \param C the parsing context
- * \param O the output context
- * \param oper the operation we're parsing
- * \param statement indicates whether parsing a statement, or expression
- * \return 1 if success, 0 if error
- */
-static int
-parse_child_operation(slang_parse_ctx * C, slang_output_ctx * O,
- slang_operation * oper, GLboolean statement)
-{
- slang_operation *ch;
-
- /* grow child array */
- ch = slang_operation_grow(&oper->num_children, &oper->children);
- if (statement)
- return parse_statement(C, O, ch);
- return parse_expression(C, O, ch);
-}
-
-static int parse_declaration(slang_parse_ctx * C, slang_output_ctx * O);
-
-static int
-parse_statement(slang_parse_ctx * C, slang_output_ctx * O,
- slang_operation * oper)
-{
- int op;
-
- oper->locals->outer_scope = O->vars;
-
- op = *C->I++;
- switch (op) {
- case OP_BLOCK_BEGIN_NO_NEW_SCOPE:
- /* parse child statements, do not create new variable scope */
- oper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
- while (*C->I != OP_END)
- if (!parse_child_operation(C, O, oper, GL_TRUE))
- RETURN0;
- C->I++;
- break;
- case OP_BLOCK_BEGIN_NEW_SCOPE:
- /* parse child statements, create new variable scope */
- {
- slang_output_ctx o = *O;
-
- oper->type = SLANG_OPER_BLOCK_NEW_SCOPE;
- o.vars = oper->locals;
- while (*C->I != OP_END)
- if (!parse_child_operation(C, &o, oper, GL_TRUE))
- RETURN0;
- C->I++;
- }
- break;
- case OP_DECLARE:
- /* local variable declaration, individual declarators are stored as
- * children identifiers
- */
- oper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
- {
- const unsigned int first_var = O->vars->num_variables;
-
- /* parse the declaration, note that there can be zero or more
- * than one declarators
- */
- if (!parse_declaration(C, O))
- RETURN0;
- if (first_var < O->vars->num_variables) {
- const unsigned int num_vars = O->vars->num_variables - first_var;
- unsigned int i;
- assert(oper->num_children == 0);
- oper->num_children = num_vars;
- oper->children = slang_operation_new(num_vars);
- if (oper->children == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- for (i = first_var; i < O->vars->num_variables; i++) {
- slang_operation *o = &oper->children[i - first_var];
- slang_variable *var = O->vars->variables[i];
- o->type = SLANG_OPER_VARIABLE_DECL;
- o->locals->outer_scope = O->vars;
- o->a_id = var->a_name;
-
- /* new/someday...
- calculate_var_size(C, O, var);
- */
-
- if (!legal_identifier(o->a_id)) {
- slang_info_log_error(C->L, "illegal variable name '%s'",
- (char *) o->a_id);
- RETURN0;
- }
- }
- }
- }
- break;
- case OP_ASM:
- /* the __asm statement, parse the mnemonic and all its arguments
- * as expressions
- */
- oper->type = SLANG_OPER_ASM;
- oper->a_id = parse_identifier(C);
- if (oper->a_id == SLANG_ATOM_NULL)
- RETURN0;
- while (*C->I != OP_END) {
- if (!parse_child_operation(C, O, oper, GL_FALSE))
- RETURN0;
- }
- C->I++;
- break;
- case OP_BREAK:
- oper->type = SLANG_OPER_BREAK;
- break;
- case OP_CONTINUE:
- oper->type = SLANG_OPER_CONTINUE;
- break;
- case OP_DISCARD:
- oper->type = SLANG_OPER_DISCARD;
- break;
- case OP_RETURN:
- oper->type = SLANG_OPER_RETURN;
- if (!parse_child_operation(C, O, oper, GL_FALSE))
- RETURN0;
- break;
- case OP_EXPRESSION:
- oper->type = SLANG_OPER_EXPRESSION;
- if (!parse_child_operation(C, O, oper, GL_FALSE))
- RETURN0;
- break;
- case OP_IF:
- oper->type = SLANG_OPER_IF;
- if (!parse_child_operation(C, O, oper, GL_FALSE))
- RETURN0;
- if (!parse_child_operation(C, O, oper, GL_TRUE))
- RETURN0;
- if (!parse_child_operation(C, O, oper, GL_TRUE))
- RETURN0;
- break;
- case OP_WHILE:
- {
- slang_output_ctx o = *O;
-
- oper->type = SLANG_OPER_WHILE;
- o.vars = oper->locals;
- if (!parse_child_operation(C, &o, oper, GL_TRUE))
- RETURN0;
- if (!parse_child_operation(C, &o, oper, GL_TRUE))
- RETURN0;
- }
- break;
- case OP_DO:
- oper->type = SLANG_OPER_DO;
- if (!parse_child_operation(C, O, oper, GL_TRUE))
- RETURN0;
- if (!parse_child_operation(C, O, oper, GL_FALSE))
- RETURN0;
- break;
- case OP_FOR:
- {
- slang_output_ctx o = *O;
-
- oper->type = SLANG_OPER_FOR;
- o.vars = oper->locals;
- if (!parse_child_operation(C, &o, oper, GL_TRUE))
- RETURN0;
- if (!parse_child_operation(C, &o, oper, GL_TRUE))
- RETURN0;
- if (!parse_child_operation(C, &o, oper, GL_FALSE))
- RETURN0;
- if (!parse_child_operation(C, &o, oper, GL_TRUE))
- RETURN0;
- }
- break;
- case OP_PRECISION:
- {
- /* set default precision for a type in this scope */
- /* ignored at this time */
- int prec_qual = *C->I++;
- int datatype = *C->I++;
- (void) prec_qual;
- (void) datatype;
- }
- break;
- default:
- /*printf("Unexpected operation %d\n", op);*/
- RETURN0;
- }
- return 1;
-}
-
-static int
-handle_nary_expression(slang_parse_ctx * C, slang_operation * op,
- slang_operation ** ops, unsigned int *total_ops,
- unsigned int n)
-{
- unsigned int i;
-
- op->children = slang_operation_new(n);
- if (op->children == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- op->num_children = n;
-
- for (i = 0; i < n; i++) {
- slang_operation_destruct(&op->children[i]);
- op->children[i] = (*ops)[*total_ops - (n + 1 - i)];
- }
-
- (*ops)[*total_ops - (n + 1)] = (*ops)[*total_ops - 1];
- *total_ops -= n;
-
- *ops = (slang_operation *)
- _slang_realloc(*ops,
- (*total_ops + n) * sizeof(slang_operation),
- *total_ops * sizeof(slang_operation));
- if (*ops == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- return 1;
-}
-
-static int
-is_constructor_name(const char *name, slang_atom a_name,
- slang_struct_scope * structs)
-{
- if (slang_type_specifier_type_from_string(name) != SLANG_SPEC_VOID)
- return 1;
- return slang_struct_scope_find(structs, a_name, 1) != NULL;
-}
-
-#define FUNCTION_CALL_NONARRAY 0
-#define FUNCTION_CALL_ARRAY 1
-
-static int
-parse_expression(slang_parse_ctx * C, slang_output_ctx * O,
- slang_operation * oper)
-{
- slang_operation *ops = NULL;
- unsigned int num_ops = 0;
- int number;
-
- while (*C->I != OP_END) {
- slang_operation *op;
- const unsigned int op_code = *C->I++;
-
- /* allocate default operation, becomes a no-op if not used */
- ops = (slang_operation *)
- _slang_realloc(ops,
- num_ops * sizeof(slang_operation),
- (num_ops + 1) * sizeof(slang_operation));
- if (ops == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- op = &ops[num_ops];
- if (!slang_operation_construct(op)) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- num_ops++;
- op->locals->outer_scope = O->vars;
-
- switch (op_code) {
- case OP_PUSH_VOID:
- op->type = SLANG_OPER_VOID;
- break;
- case OP_PUSH_BOOL:
- op->type = SLANG_OPER_LITERAL_BOOL;
- if (!parse_number(C, &number))
- RETURN0;
- op->literal[0] =
- op->literal[1] =
- op->literal[2] =
- op->literal[3] = (GLfloat) number;
- op->literal_size = 1;
- break;
- case OP_PUSH_INT:
- op->type = SLANG_OPER_LITERAL_INT;
- if (!parse_number(C, &number))
- RETURN0;
- op->literal[0] =
- op->literal[1] =
- op->literal[2] =
- op->literal[3] = (GLfloat) number;
- op->literal_size = 1;
- break;
- case OP_PUSH_FLOAT:
- op->type = SLANG_OPER_LITERAL_FLOAT;
- if (!parse_float(C, &op->literal[0]))
- RETURN0;
- op->literal[1] =
- op->literal[2] =
- op->literal[3] = op->literal[0];
- op->literal_size = 1;
- break;
- case OP_PUSH_IDENTIFIER:
- op->type = SLANG_OPER_IDENTIFIER;
- op->a_id = parse_identifier(C);
- if (op->a_id == SLANG_ATOM_NULL)
- RETURN0;
- break;
- case OP_SEQUENCE:
- op->type = SLANG_OPER_SEQUENCE;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_ASSIGN:
- op->type = SLANG_OPER_ASSIGN;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_ADDASSIGN:
- op->type = SLANG_OPER_ADDASSIGN;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_SUBASSIGN:
- op->type = SLANG_OPER_SUBASSIGN;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_MULASSIGN:
- op->type = SLANG_OPER_MULASSIGN;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_DIVASSIGN:
- op->type = SLANG_OPER_DIVASSIGN;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- /*case OP_MODASSIGN: */
- /*case OP_LSHASSIGN: */
- /*case OP_RSHASSIGN: */
- /*case OP_ORASSIGN: */
- /*case OP_XORASSIGN: */
- /*case OP_ANDASSIGN: */
- case OP_SELECT:
- op->type = SLANG_OPER_SELECT;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 3))
- RETURN0;
- break;
- case OP_LOGICALOR:
- op->type = SLANG_OPER_LOGICALOR;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_LOGICALXOR:
- op->type = SLANG_OPER_LOGICALXOR;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_LOGICALAND:
- op->type = SLANG_OPER_LOGICALAND;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- /*case OP_BITOR: */
- /*case OP_BITXOR: */
- /*case OP_BITAND: */
- case OP_EQUAL:
- op->type = SLANG_OPER_EQUAL;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_NOTEQUAL:
- op->type = SLANG_OPER_NOTEQUAL;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_LESS:
- op->type = SLANG_OPER_LESS;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_GREATER:
- op->type = SLANG_OPER_GREATER;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_LESSEQUAL:
- op->type = SLANG_OPER_LESSEQUAL;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_GREATEREQUAL:
- op->type = SLANG_OPER_GREATEREQUAL;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- /*case OP_LSHIFT: */
- /*case OP_RSHIFT: */
- case OP_ADD:
- op->type = SLANG_OPER_ADD;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_SUBTRACT:
- op->type = SLANG_OPER_SUBTRACT;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_MULTIPLY:
- op->type = SLANG_OPER_MULTIPLY;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_DIVIDE:
- op->type = SLANG_OPER_DIVIDE;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- /*case OP_MODULUS: */
- case OP_PREINCREMENT:
- op->type = SLANG_OPER_PREINCREMENT;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
- RETURN0;
- break;
- case OP_PREDECREMENT:
- op->type = SLANG_OPER_PREDECREMENT;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
- RETURN0;
- break;
- case OP_PLUS:
- op->type = SLANG_OPER_PLUS;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
- RETURN0;
- break;
- case OP_MINUS:
- op->type = SLANG_OPER_MINUS;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
- RETURN0;
- break;
- case OP_NOT:
- op->type = SLANG_OPER_NOT;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
- RETURN0;
- break;
- /*case OP_COMPLEMENT: */
- case OP_SUBSCRIPT:
- op->type = SLANG_OPER_SUBSCRIPT;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
- RETURN0;
- break;
- case OP_METHOD:
- op->type = SLANG_OPER_METHOD;
- op->a_obj = parse_identifier(C);
- if (op->a_obj == SLANG_ATOM_NULL)
- RETURN0;
-
- op->a_id = parse_identifier(C);
- if (op->a_id == SLANG_ATOM_NULL)
- RETURN0;
-
- assert(*C->I == OP_END);
- C->I++;
-
- while (*C->I != OP_END)
- if (!parse_child_operation(C, O, op, GL_FALSE))
- RETURN0;
- C->I++;
-#if 0
- /* don't lookup the method (not yet anyway) */
- if (!C->parsing_builtin
- && !slang_function_scope_find_by_name(O->funs, op->a_id, 1)) {
- const char *id;
-
- id = slang_atom_pool_id(C->atoms, op->a_id);
- if (!is_constructor_name(id, op->a_id, O->structs)) {
- slang_info_log_error(C->L, "%s: undeclared function name.", id);
- RETURN0;
- }
- }
-#endif
- break;
- case OP_CALL:
- {
- GLboolean array_constructor = GL_FALSE;
- GLint array_constructor_size = 0;
-
- op->type = SLANG_OPER_CALL;
- op->a_id = parse_identifier(C);
- if (op->a_id == SLANG_ATOM_NULL)
- RETURN0;
- switch (*C->I++) {
- case FUNCTION_CALL_NONARRAY:
- /* Nothing to do. */
- break;
- case FUNCTION_CALL_ARRAY:
- /* Calling an array constructor. For example:
- * float[3](1.1, 2.2, 3.3);
- */
- if (!O->allow_array_types) {
- slang_info_log_error(C->L,
- "array constructors not allowed "
- "in this GLSL version");
- RETURN0;
- }
- else {
- /* parse the array constructor size */
- slang_operation array_size;
- array_constructor = GL_TRUE;
- slang_operation_construct(&array_size);
- if (!parse_expression(C, O, &array_size)) {
- slang_operation_destruct(&array_size);
- return GL_FALSE;
- }
- if (array_size.type != SLANG_OPER_LITERAL_INT) {
- slang_info_log_error(C->L,
- "constructor array size is not an integer");
- slang_operation_destruct(&array_size);
- RETURN0;
- }
- array_constructor_size = (int) array_size.literal[0];
- op->array_constructor = GL_TRUE;
- slang_operation_destruct(&array_size);
- }
- break;
- default:
- assert(0);
- RETURN0;
- }
- while (*C->I != OP_END)
- if (!parse_child_operation(C, O, op, GL_FALSE))
- RETURN0;
- C->I++;
-
- if (array_constructor &&
- array_constructor_size != op->num_children) {
- slang_info_log_error(C->L, "number of parameters to array"
- " constructor does not match array size");
- RETURN0;
- }
-
- if (!C->parsing_builtin
- && !slang_function_scope_find_by_name(O->funs, op->a_id, 1)) {
- const char *id;
-
- id = slang_atom_pool_id(C->atoms, op->a_id);
- if (!is_constructor_name(id, op->a_id, O->structs)) {
- slang_info_log_error(C->L, "%s: undeclared function name.", id);
- RETURN0;
- }
- }
- }
- break;
- case OP_FIELD:
- op->type = SLANG_OPER_FIELD;
- op->a_id = parse_identifier(C);
- if (op->a_id == SLANG_ATOM_NULL)
- RETURN0;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
- RETURN0;
- break;
- case OP_POSTINCREMENT:
- op->type = SLANG_OPER_POSTINCREMENT;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
- RETURN0;
- break;
- case OP_POSTDECREMENT:
- op->type = SLANG_OPER_POSTDECREMENT;
- if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
- RETURN0;
- break;
- default:
- RETURN0;
- }
- }
- C->I++;
-
- slang_operation_destruct(oper);
- *oper = *ops; /* struct copy */
- _slang_free(ops);
-
- return 1;
-}
-
-/* function parameter array presence */
-#define PARAMETER_ARRAY_NOT_PRESENT 0
-#define PARAMETER_ARRAY_PRESENT 1
-
-static int
-parse_parameter_declaration(slang_parse_ctx * C, slang_output_ctx * O,
- slang_variable * param)
-{
- int param_qual, precision_qual;
-
- /* parse and validate the parameter's type qualifiers (there can be
- * two at most) because not all combinations are valid
- */
- if (!parse_type_qualifier(C, &param->type.qualifier))
- RETURN0;
-
- param_qual = *C->I++;
- switch (param_qual) {
- case PARAM_QUALIFIER_IN:
- if (param->type.qualifier != SLANG_QUAL_CONST
- && param->type.qualifier != SLANG_QUAL_NONE) {
- slang_info_log_error(C->L, "Invalid type qualifier.");
- RETURN0;
- }
- break;
- case PARAM_QUALIFIER_OUT:
- if (param->type.qualifier == SLANG_QUAL_NONE)
- param->type.qualifier = SLANG_QUAL_OUT;
- else {
- slang_info_log_error(C->L, "Invalid type qualifier.");
- RETURN0;
- }
- break;
- case PARAM_QUALIFIER_INOUT:
- if (param->type.qualifier == SLANG_QUAL_NONE)
- param->type.qualifier = SLANG_QUAL_INOUT;
- else {
- slang_info_log_error(C->L, "Invalid type qualifier.");
- RETURN0;
- }
- break;
- case PARAM_QUALIFIER_NONE:
- /* like IN but doesn't throw error */
- break;
- default:
- RETURN0;
- }
-
- /* parse precision qualifier (lowp, mediump, highp */
- precision_qual = *C->I++;
- /* ignored at this time */
- (void) precision_qual;
-
- /* parse parameter's type specifier and name */
- if (!parse_type_specifier(C, O, &param->type.specifier))
- RETURN0;
- if (!parse_type_array_size(C, O, &param->type.array_len))
- RETURN0;
- param->a_name = parse_identifier(C);
- if (param->a_name == SLANG_ATOM_NULL)
- RETURN0;
-
- /* first-class array
- */
- if (param->type.array_len >= 0) {
- slang_type_specifier p;
-
- slang_type_specifier_ctr(&p);
- if (!slang_type_specifier_copy(&p, &param->type.specifier)) {
- slang_type_specifier_dtr(&p);
- RETURN0;
- }
- if (!convert_to_array(C, param, &p)) {
- slang_type_specifier_dtr(&p);
- RETURN0;
- }
- slang_type_specifier_dtr(&p);
- param->array_len = param->type.array_len;
- }
-
- /* if the parameter is an array, parse its size (the size must be
- * explicitly defined
- */
- if (*C->I++ == PARAMETER_ARRAY_PRESENT) {
- slang_type_specifier p;
-
- if (param->type.array_len >= 0) {
- slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
- RETURN0;
- }
- slang_type_specifier_ctr(&p);
- if (!slang_type_specifier_copy(&p, &param->type.specifier)) {
- slang_type_specifier_dtr(&p);
- RETURN0;
- }
- if (!convert_to_array(C, param, &p)) {
- slang_type_specifier_dtr(&p);
- RETURN0;
- }
- slang_type_specifier_dtr(&p);
- if (!parse_array_len(C, O, &param->array_len))
- RETURN0;
- }
-
-#if 0
- /* calculate the parameter size */
- if (!calculate_var_size(C, O, param))
- RETURN0;
-#endif
- /* TODO: allocate the local address here? */
- return 1;
-}
-
-/* function type */
-#define FUNCTION_ORDINARY 0
-#define FUNCTION_CONSTRUCTOR 1
-#define FUNCTION_OPERATOR 2
-
-/* function parameter */
-#define PARAMETER_NONE 0
-#define PARAMETER_NEXT 1
-
-/* operator type */
-#define OPERATOR_ADDASSIGN 1
-#define OPERATOR_SUBASSIGN 2
-#define OPERATOR_MULASSIGN 3
-#define OPERATOR_DIVASSIGN 4
-/*#define OPERATOR_MODASSIGN 5*/
-/*#define OPERATOR_LSHASSIGN 6*/
-/*#define OPERATOR_RSHASSIGN 7*/
-/*#define OPERATOR_ANDASSIGN 8*/
-/*#define OPERATOR_XORASSIGN 9*/
-/*#define OPERATOR_ORASSIGN 10*/
-#define OPERATOR_LOGICALXOR 11
-/*#define OPERATOR_BITOR 12*/
-/*#define OPERATOR_BITXOR 13*/
-/*#define OPERATOR_BITAND 14*/
-#define OPERATOR_LESS 15
-#define OPERATOR_GREATER 16
-#define OPERATOR_LESSEQUAL 17
-#define OPERATOR_GREATEREQUAL 18
-/*#define OPERATOR_LSHIFT 19*/
-/*#define OPERATOR_RSHIFT 20*/
-#define OPERATOR_MULTIPLY 21
-#define OPERATOR_DIVIDE 22
-/*#define OPERATOR_MODULUS 23*/
-#define OPERATOR_INCREMENT 24
-#define OPERATOR_DECREMENT 25
-#define OPERATOR_PLUS 26
-#define OPERATOR_MINUS 27
-/*#define OPERATOR_COMPLEMENT 28*/
-#define OPERATOR_NOT 29
-
-static const struct
-{
- unsigned int o_code;
- const char *o_name;
-} operator_names[] = {
- {OPERATOR_INCREMENT, "++"},
- {OPERATOR_ADDASSIGN, "+="},
- {OPERATOR_PLUS, "+"},
- {OPERATOR_DECREMENT, "--"},
- {OPERATOR_SUBASSIGN, "-="},
- {OPERATOR_MINUS, "-"},
- {OPERATOR_NOT, "!"},
- {OPERATOR_MULASSIGN, "*="},
- {OPERATOR_MULTIPLY, "*"},
- {OPERATOR_DIVASSIGN, "/="},
- {OPERATOR_DIVIDE, "/"},
- {OPERATOR_LESSEQUAL, "<="},
- /*{ OPERATOR_LSHASSIGN, "<<=" }, */
- /*{ OPERATOR_LSHIFT, "<<" }, */
- {OPERATOR_LESS, "<"},
- {OPERATOR_GREATEREQUAL, ">="},
- /*{ OPERATOR_RSHASSIGN, ">>=" }, */
- /*{ OPERATOR_RSHIFT, ">>" }, */
- {OPERATOR_GREATER, ">"},
- /*{ OPERATOR_MODASSIGN, "%=" }, */
- /*{ OPERATOR_MODULUS, "%" }, */
- /*{ OPERATOR_ANDASSIGN, "&=" }, */
- /*{ OPERATOR_BITAND, "&" }, */
- /*{ OPERATOR_ORASSIGN, "|=" }, */
- /*{ OPERATOR_BITOR, "|" }, */
- /*{ OPERATOR_COMPLEMENT, "~" }, */
- /*{ OPERATOR_XORASSIGN, "^=" }, */
- {OPERATOR_LOGICALXOR, "^^"},
- /*{ OPERATOR_BITXOR, "^" } */
-};
-
-static slang_atom
-parse_operator_name(slang_parse_ctx * C)
-{
- unsigned int i;
-
- for (i = 0; i < sizeof(operator_names) / sizeof(*operator_names); i++) {
- if (operator_names[i].o_code == (unsigned int) (*C->I)) {
- slang_atom atom =
- slang_atom_pool_atom(C->atoms, operator_names[i].o_name);
- if (atom == SLANG_ATOM_NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- C->I++;
- return atom;
- }
- }
- RETURN0;
-}
-
-
-static int
-parse_function_prototype(slang_parse_ctx * C, slang_output_ctx * O,
- slang_function * func)
-{
- GLuint functype;
- /* parse function type and name */
- if (!parse_fully_specified_type(C, O, &func->header.type))
- RETURN0;
-
- functype = *C->I++;
- switch (functype) {
- case FUNCTION_ORDINARY:
- func->kind = SLANG_FUNC_ORDINARY;
- func->header.a_name = parse_identifier(C);
- if (func->header.a_name == SLANG_ATOM_NULL)
- RETURN0;
- break;
- case FUNCTION_CONSTRUCTOR:
- func->kind = SLANG_FUNC_CONSTRUCTOR;
- if (func->header.type.specifier.type == SLANG_SPEC_STRUCT)
- RETURN0;
- func->header.a_name =
- slang_atom_pool_atom(C->atoms,
- slang_type_specifier_type_to_string
- (func->header.type.specifier.type));
- if (func->header.a_name == SLANG_ATOM_NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- break;
- case FUNCTION_OPERATOR:
- func->kind = SLANG_FUNC_OPERATOR;
- func->header.a_name = parse_operator_name(C);
- if (func->header.a_name == SLANG_ATOM_NULL)
- RETURN0;
- break;
- default:
- RETURN0;
- }
-
- if (!legal_identifier(func->header.a_name)) {
- slang_info_log_error(C->L, "illegal function name '%s'",
- (char *) func->header.a_name);
- RETURN0;
- }
-
- /* parse function parameters */
- while (*C->I++ == PARAMETER_NEXT) {
- slang_variable *p = slang_variable_scope_grow(func->parameters);
- if (!p) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- if (!parse_parameter_declaration(C, O, p))
- RETURN0;
- }
-
- /* if the function returns a value, append a hidden __retVal 'out'
- * parameter that corresponds to the return value.
- */
- if (_slang_function_has_return_value(func)) {
- slang_variable *p = slang_variable_scope_grow(func->parameters);
- slang_atom a_retVal = slang_atom_pool_atom(C->atoms, "__retVal");
- assert(a_retVal);
- p->a_name = a_retVal;
- p->type = func->header.type;
- p->type.qualifier = SLANG_QUAL_OUT;
- }
-
- /* function formal parameters and local variables share the same
- * scope, so save the information about param count in a seperate
- * place also link the scope to the global variable scope so when a
- * given identifier is not found here, the search process continues
- * in the global space
- */
- func->param_count = func->parameters->num_variables;
- func->parameters->outer_scope = O->vars;
-
- return 1;
-}
-
-static int
-parse_function_definition(slang_parse_ctx * C, slang_output_ctx * O,
- slang_function * func)
-{
- slang_output_ctx o = *O;
-
- if (!parse_function_prototype(C, O, func))
- RETURN0;
-
- /* create function's body operation */
- func->body = (slang_operation *) _slang_alloc(sizeof(slang_operation));
- if (func->body == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- if (!slang_operation_construct(func->body)) {
- _slang_free(func->body);
- func->body = NULL;
- slang_info_log_memory(C->L);
- RETURN0;
- }
-
- /* to parse the body the parse context is modified in order to
- * capture parsed variables into function's local variable scope
- */
- C->global_scope = GL_FALSE;
- o.vars = func->parameters;
- if (!parse_statement(C, &o, func->body))
- RETURN0;
-
- C->global_scope = GL_TRUE;
- return 1;
-}
-
-static GLboolean
-initialize_global(slang_assemble_ctx * A, slang_variable * var)
-{
- slang_operation op_id, op_assign;
- GLboolean result;
-
- /* construct the left side of assignment */
- if (!slang_operation_construct(&op_id))
- return GL_FALSE;
- op_id.type = SLANG_OPER_IDENTIFIER;
- op_id.a_id = var->a_name;
-
- /* put the variable into operation's scope */
- op_id.locals->variables =
- (slang_variable **) _slang_alloc(sizeof(slang_variable *));
- if (op_id.locals->variables == NULL) {
- slang_operation_destruct(&op_id);
- return GL_FALSE;
- }
- op_id.locals->num_variables = 1;
- op_id.locals->variables[0] = var;
-
- /* construct the assignment expression */
- if (!slang_operation_construct(&op_assign)) {
- op_id.locals->num_variables = 0;
- slang_operation_destruct(&op_id);
- return GL_FALSE;
- }
- op_assign.type = SLANG_OPER_ASSIGN;
- op_assign.children =
- (slang_operation *) _slang_alloc(2 * sizeof(slang_operation));
- if (op_assign.children == NULL) {
- slang_operation_destruct(&op_assign);
- op_id.locals->num_variables = 0;
- slang_operation_destruct(&op_id);
- return GL_FALSE;
- }
- op_assign.num_children = 2;
- op_assign.children[0] = op_id;
- op_assign.children[1] = *var->initializer;
-
- result = 1;
-
- /* carefully destroy the operations */
- op_assign.num_children = 0;
- _slang_free(op_assign.children);
- op_assign.children = NULL;
- slang_operation_destruct(&op_assign);
- op_id.locals->num_variables = 0;
- slang_operation_destruct(&op_id);
-
- if (!result)
- return GL_FALSE;
-
- return GL_TRUE;
-}
-
-/* init declarator list */
-#define DECLARATOR_NONE 0
-#define DECLARATOR_NEXT 1
-
-/* variable declaration */
-#define VARIABLE_NONE 0
-#define VARIABLE_IDENTIFIER 1
-#define VARIABLE_INITIALIZER 2
-#define VARIABLE_ARRAY_EXPLICIT 3
-#define VARIABLE_ARRAY_UNKNOWN 4
-
-
-/**
- * Check if it's OK to re-declare a variable with the given new type.
- * This happens when applying layout qualifiers to gl_FragCoord or
- * (re)setting an array size.
- * If redeclaration is OK, return a pointer to the incoming variable
- * updated with new type info. Else return NULL;
- */
-static slang_variable *
-redeclare_variable(slang_variable *var,
- const slang_fully_specified_type *type)
-{
- if (slang_fully_specified_types_compatible(&var->type, type)) {
- /* replace orig var layout with new layout */
- var->type.layout = type->layout;
-
- /* XXX there may be other type updates in the future here */
-
- return var;
- }
- else
- return NULL;
-}
-
-
-/**
- * Parse the initializer for a variable declaration.
- */
-static int
-parse_init_declarator(slang_parse_ctx * C, slang_output_ctx * O,
- const slang_fully_specified_type * type)
-{
- GET_CURRENT_CONTEXT(ctx); /* a hack */
- slang_variable *var = NULL, *prevDecl;
- slang_atom a_name;
-
- /* empty init declatator (without name, e.g. "float ;") */
- if (*C->I++ == VARIABLE_NONE)
- return 1;
-
- a_name = parse_identifier(C);
-
- /* check if name is already in this scope */
- prevDecl = _slang_variable_locate(O->vars, a_name, C->global_scope);
- if (prevDecl) {
- /* A var with this name has already been declared.
- * Check if redeclaring the var with a different type/layout is legal.
- */
- if (C->global_scope) {
- var = redeclare_variable(prevDecl, type);
- }
- if (!var) {
- slang_info_log_error(C->L,
- "declaration of '%s' conflicts with previous declaration",
- (char *) a_name);
- RETURN0;
- }
- }
-
- if (!var) {
- /* make room for a new variable and initialize it */
- var = slang_variable_scope_grow(O->vars);
- if (!var) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
-
- /* copy the declarator type qualifier/etc info, parse the identifier */
- var->type.qualifier = type->qualifier;
- var->type.centroid = type->centroid;
- var->type.precision = type->precision;
- var->type.specifier = type->specifier;/*new*/
- var->type.variant = type->variant;
- var->type.layout = type->layout;
- var->type.array_len = type->array_len;
- var->type.varying_kind = type->varying_kind;
- var->a_name = a_name;
- if (var->a_name == SLANG_ATOM_NULL)
- RETURN0;
- }
-
- switch (*C->I++) {
- case VARIABLE_NONE:
- /* simple variable declarator - just copy the specifier */
- if (!slang_type_specifier_copy(&var->type.specifier, &type->specifier))
- RETURN0;
- break;
- case VARIABLE_INITIALIZER:
- /* initialized variable - copy the specifier and parse the expression */
- if (0 && type->array_len >= 0) {
- /* The type was something like "float[4]" */
- convert_to_array(C, var, &type->specifier);
- var->array_len = type->array_len;
- }
- else {
- if (!slang_type_specifier_copy(&var->type.specifier, &type->specifier))
- RETURN0;
- }
- var->initializer =
- (slang_operation *) _slang_alloc(sizeof(slang_operation));
- if (var->initializer == NULL) {
- slang_info_log_memory(C->L);
- RETURN0;
- }
- if (!slang_operation_construct(var->initializer)) {
- _slang_free(var->initializer);
- var->initializer = NULL;
- slang_info_log_memory(C->L);
- RETURN0;
- }
- if (!parse_expression(C, O, var->initializer))
- RETURN0;
- break;
- case VARIABLE_ARRAY_UNKNOWN:
- /* unsized array - mark it as array and copy the specifier to
- * the array element
- */
- if (type->array_len >= 0) {
- slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
- RETURN0;
- }
- if (!convert_to_array(C, var, &type->specifier))
- return GL_FALSE;
- break;
- case VARIABLE_ARRAY_EXPLICIT:
- if (type->array_len >= 0) {
- /* the user is trying to do something like: float[2] x[3]; */
- slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
- RETURN0;
- }
- if (!convert_to_array(C, var, &type->specifier))
- return GL_FALSE;
- if (!parse_array_len(C, O, &var->array_len))
- return GL_FALSE;
- break;
- default:
- RETURN0;
- }
-
- /* allocate global address space for a variable with a known size */
- if (C->global_scope
- && !(var->type.specifier.type == SLANG_SPEC_ARRAY
- && var->array_len == 0)) {
- if (!calculate_var_size(C, O, var))
- return GL_FALSE;
- }
-
- /* emit code for global var decl */
- if (C->global_scope) {
- slang_assemble_ctx A;
- memset(&A, 0, sizeof(slang_assemble_ctx));
- A.allow_uniform_initializers = C->version > 110;
- A.atoms = C->atoms;
- A.space.funcs = O->funs;
- A.space.structs = O->structs;
- A.space.vars = O->vars;
- A.program = O->program;
- A.pragmas = O->pragmas;
- A.vartable = O->vartable;
- A.log = C->L;
- A.curFuncEndLabel = NULL;
- A.EmitContReturn = ctx->Shader.EmitContReturn;
- if (!_slang_codegen_global_variable(&A, var, C->type))
- RETURN0;
- }
-
- /* initialize global variable */
- if (C->global_scope) {
- if (var->initializer != NULL) {
- slang_assemble_ctx A;
- memset(&A, 0, sizeof(slang_assemble_ctx));
- A.allow_uniform_initializers = C->version > 110;
- A.atoms = C->atoms;
- A.space.funcs = O->funs;
- A.space.structs = O->structs;
- A.space.vars = O->vars;
- if (!initialize_global(&A, var))
- RETURN0;
- }
- }
-
- if (var->type.qualifier == SLANG_QUAL_FIXEDINPUT &&
- var->a_name == slang_atom_pool_atom(C->atoms, "gl_FragCoord")) {
- /* set the program's PixelCenterInteger, OriginUpperLeft fields */
- struct gl_fragment_program *fragProg =
- (struct gl_fragment_program *) O->program;
-
- if (var->type.layout & SLANG_LAYOUT_UPPER_LEFT_BIT) {
- fragProg->OriginUpperLeft = GL_TRUE;
- }
- if (var->type.layout & SLANG_LAYOUT_PIXEL_CENTER_INTEGER_BIT) {
- fragProg->PixelCenterInteger = GL_TRUE;
- }
- }
-
- return 1;
-}
-
-/**
- * Parse a list of variable declarations. Each variable may have an
- * initializer.
- */
-static int
-parse_init_declarator_list(slang_parse_ctx * C, slang_output_ctx * O)
-{
- slang_fully_specified_type type;
-
- /* parse the fully specified type, common to all declarators */
- if (!slang_fully_specified_type_construct(&type))
- RETURN0;
- if (!parse_fully_specified_type(C, O, &type)) {
- slang_fully_specified_type_destruct(&type);
- RETURN0;
- }
-
- /* parse declarators, pass-in the parsed type */
- do {
- if (!parse_init_declarator(C, O, &type)) {
- slang_fully_specified_type_destruct(&type);
- RETURN0;
- }
- }
- while (*C->I++ == DECLARATOR_NEXT);
-
- slang_fully_specified_type_destruct(&type);
- return 1;
-}
-
-
-/**
- * Parse a function definition or declaration.
- * \param C parsing context
- * \param O output context
- * \param definition if non-zero expect a definition, else a declaration
- * \param parsed_func_ret returns the parsed function
- * \return GL_TRUE if success, GL_FALSE if failure
- */
-static GLboolean
-parse_function(slang_parse_ctx * C, slang_output_ctx * O, int definition,
- slang_function ** parsed_func_ret)
-{
- slang_function parsed_func, *found_func;
-
- /* parse function definition/declaration */
- if (!slang_function_construct(&parsed_func))
- return GL_FALSE;
- if (definition) {
- if (!parse_function_definition(C, O, &parsed_func)) {
- slang_function_destruct(&parsed_func);
- return GL_FALSE;
- }
- }
- else {
- if (!parse_function_prototype(C, O, &parsed_func)) {
- slang_function_destruct(&parsed_func);
- return GL_FALSE;
- }
- }
-
- /* find a function with a prototype matching the parsed one - only
- * the current scope is being searched to allow built-in function
- * overriding
- */
- found_func = slang_function_scope_find(O->funs, &parsed_func, 0);
- if (found_func == NULL) {
- /* New function, add it to the function list */
- O->funs->functions =
- (slang_function *) _slang_realloc(O->funs->functions,
- O->funs->num_functions
- * sizeof(slang_function),
- (O->funs->num_functions + 1)
- * sizeof(slang_function));
- if (O->funs->functions == NULL) {
- /* Make sure that there are no functions marked, as the
- * allocation is currently NULL, in order to avoid
- * a potental segfault as we clean up later.
- */
- O->funs->num_functions = 0;
-
- slang_info_log_memory(C->L);
- slang_function_destruct(&parsed_func);
- return GL_FALSE;
- }
- O->funs->functions[O->funs->num_functions] = parsed_func;
- O->funs->num_functions++;
-
- /* return the newly parsed function */
- *parsed_func_ret = &O->funs->functions[O->funs->num_functions - 1];
- }
- else {
- /* previously defined or declared */
- /* TODO: check function return type qualifiers and specifiers */
- if (definition) {
- if (found_func->body != NULL) {
- slang_info_log_error(C->L, "%s: function already has a body.",
- slang_atom_pool_id(C->atoms,
- parsed_func.header.
- a_name));
- slang_function_destruct(&parsed_func);
- return GL_FALSE;
- }
-
- /* destroy the existing function declaration and replace it
- * with the new one
- */
- slang_function_destruct(found_func);
- *found_func = parsed_func;
- }
- else {
- /* another declaration of the same function prototype - ignore it */
- slang_function_destruct(&parsed_func);
- }
-
- /* return the found function */
- *parsed_func_ret = found_func;
- }
-
- return GL_TRUE;
-}
-
-/* declaration */
-#define DECLARATION_FUNCTION_PROTOTYPE 1
-#define DECLARATION_INIT_DECLARATOR_LIST 2
-
-static int
-parse_declaration(slang_parse_ctx * C, slang_output_ctx * O)
-{
- switch (*C->I++) {
- case DECLARATION_INIT_DECLARATOR_LIST:
- if (!parse_init_declarator_list(C, O))
- RETURN0;
- break;
- case DECLARATION_FUNCTION_PROTOTYPE:
- {
- slang_function *dummy_func;
-
- if (!parse_function(C, O, 0, &dummy_func))
- RETURN0;
- }
- break;
- default:
- RETURN0;
- }
- return 1;
-}
-
-static int
-parse_default_precision(slang_parse_ctx * C, slang_output_ctx * O)
-{
- int precision, type;
-
- if (!O->allow_precision) {
- slang_info_log_error(C->L, "syntax error at \"precision\"");
- RETURN0;
- }
-
- precision = *C->I++;
- switch (precision) {
- case PRECISION_LOW:
- case PRECISION_MEDIUM:
- case PRECISION_HIGH:
- /* OK */
- break;
- default:
- _mesa_problem(NULL, "unexpected precision %d at %s:%d\n",
- precision, __FILE__, __LINE__);
- RETURN0;
- }
-
- type = *C->I++;
- switch (type) {
- case TYPE_SPECIFIER_FLOAT:
- case TYPE_SPECIFIER_INT:
- case TYPE_SPECIFIER_SAMPLER1D:
- case TYPE_SPECIFIER_SAMPLER2D:
- case TYPE_SPECIFIER_SAMPLER3D:
- case TYPE_SPECIFIER_SAMPLERCUBE:
- case TYPE_SPECIFIER_SAMPLER1DSHADOW:
- case TYPE_SPECIFIER_SAMPLER2DSHADOW:
- case TYPE_SPECIFIER_SAMPLER2DRECT:
- case TYPE_SPECIFIER_SAMPLER2DRECTSHADOW:
- case TYPE_SPECIFIER_SAMPLER_1D_ARRAY:
- case TYPE_SPECIFIER_SAMPLER_2D_ARRAY:
- case TYPE_SPECIFIER_SAMPLER_1D_ARRAY_SHADOW:
- case TYPE_SPECIFIER_SAMPLER_2D_ARRAY_SHADOW:
- /* OK */
- break;
- default:
- _mesa_problem(NULL, "unexpected type %d at %s:%d\n",
- type, __FILE__, __LINE__);
- RETURN0;
- }
-
- assert(type < TYPE_SPECIFIER_COUNT);
- O->default_precision[type] = precision;
-
- return 1;
-}
-
-
-/**
- * Initialize the default precision for all types.
- * XXX this info isn't used yet.
- */
-static void
-init_default_precision(slang_output_ctx *O, slang_unit_type type)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < TYPE_SPECIFIER_COUNT; i++) {
-#if FEATURE_es2_glsl
- if (ctx->API == API_OPENGLES2)
- O->default_precision[i] = PRECISION_LOW;
- else
- O->default_precision[i] = PRECISION_HIGH;
-#else
- (void) ctx;
- O->default_precision[i] = PRECISION_HIGH;
-#endif
- }
-
- if (type == SLANG_UNIT_VERTEX_SHADER || type == SLANG_UNIT_GEOMETRY_SHADER) {
- O->default_precision[TYPE_SPECIFIER_FLOAT] = PRECISION_HIGH;
- O->default_precision[TYPE_SPECIFIER_INT] = PRECISION_HIGH;
- }
- else {
- O->default_precision[TYPE_SPECIFIER_INT] = PRECISION_MEDIUM;
- }
-}
-
-
-static int
-parse_invariant(slang_parse_ctx * C, slang_output_ctx * O)
-{
- if (O->allow_invariant) {
- slang_atom *a = parse_identifier(C);
- /* XXX not doing anything with this var yet */
- /*printf("ID: %s\n", (char*) a);*/
- return a ? 1 : 0;
- }
- else {
- slang_info_log_error(C->L, "syntax error at \"invariant\"");
- RETURN0;
- }
-}
-
-
-/* external declaration or default precision specifier */
-#define EXTERNAL_NULL 0
-#define EXTERNAL_FUNCTION_DEFINITION 1
-#define EXTERNAL_DECLARATION 2
-#define DEFAULT_PRECISION 3
-#define INVARIANT_STMT 4
-
-
-static GLboolean
-parse_code_unit(slang_parse_ctx * C, slang_code_unit * unit,
- struct gl_shader *shader)
-{
- GET_CURRENT_CONTEXT(ctx);
- slang_output_ctx o;
- GLboolean success;
- GLuint maxRegs;
- slang_function *mainFunc = NULL;
-
- if (unit->type == SLANG_UNIT_FRAGMENT_BUILTIN ||
- unit->type == SLANG_UNIT_FRAGMENT_SHADER) {
- maxRegs = ctx->Const.FragmentProgram.MaxTemps;
- }
- else if (unit->type == SLANG_UNIT_VERTEX_BUILTIN ||
- unit->type == SLANG_UNIT_VERTEX_SHADER) {
- maxRegs = ctx->Const.VertexProgram.MaxTemps;
- } else {
- assert(unit->type == SLANG_UNIT_GEOMETRY_BUILTIN ||
- unit->type == SLANG_UNIT_GEOMETRY_SHADER);
- maxRegs = ctx->Const.GeometryProgram.MaxTemps;
- }
-
- /* setup output context */
- o.funs = &unit->funs;
- o.structs = &unit->structs;
- o.vars = &unit->vars;
- o.program = shader ? shader->Program : NULL;
- o.pragmas = shader ? &shader->Pragmas : NULL;
- o.vartable = _slang_new_var_table(maxRegs);
- _slang_push_var_table(o.vartable);
-
- /* allow 'invariant' keyword? */
-#if FEATURE_es2_glsl
- o.allow_invariant =
- (ctx->API == API_OPENGLES2 || C->version >= 120) ? GL_TRUE : GL_FALSE;
-#else
- o.allow_invariant = (C->version >= 120) ? GL_TRUE : GL_FALSE;
-#endif
-
- /* allow 'centroid' keyword? */
- o.allow_centroid = (C->version >= 120) ? GL_TRUE : GL_FALSE;
-
- /* allow 'lowp/mediump/highp' keywords? */
-#if FEATURE_es2_glsl
- o.allow_precision =
- (ctx->API == API_OPENGLES2 || C->version >= 120) ? GL_TRUE : GL_FALSE;
-#else
- o.allow_precision = (C->version >= 120) ? GL_TRUE : GL_FALSE;
-#endif
- init_default_precision(&o, unit->type);
-
- /* allow 'float[]' keyword? */
- o.allow_array_types = (C->version >= 120) ? GL_TRUE : GL_FALSE;
-
- /* parse individual functions and declarations */
- while (*C->I != EXTERNAL_NULL) {
- switch (*C->I++) {
- case EXTERNAL_FUNCTION_DEFINITION:
- {
- slang_function *func;
- success = parse_function(C, &o, 1, &func);
- if (success && strcmp((char *) func->header.a_name, "main") == 0) {
- /* found main() */
- mainFunc = func;
- }
- }
- break;
- case EXTERNAL_DECLARATION:
- success = parse_declaration(C, &o);
- break;
- case DEFAULT_PRECISION:
- success = parse_default_precision(C, &o);
- break;
- case INVARIANT_STMT:
- success = parse_invariant(C, &o);
- break;
- default:
- success = GL_FALSE;
- }
-
- if (!success) {
- /* xxx free codegen */
- _slang_pop_var_table(o.vartable);
- return GL_FALSE;
- }
- }
- C->I++;
-
- if (mainFunc) {
- /* assemble (generate code) for main() */
- slang_assemble_ctx A;
- memset(&A, 0, sizeof(slang_assemble_ctx));
- A.atoms = C->atoms;
- A.space.funcs = o.funs;
- A.space.structs = o.structs;
- A.space.vars = o.vars;
- A.program = o.program;
- A.pragmas = &shader->Pragmas;
- A.vartable = o.vartable;
- A.EmitContReturn = ctx->Shader.EmitContReturn;
- A.log = C->L;
- A.allow_uniform_initializers = C->version > 110;
-
- /* main() takes no parameters */
- if (mainFunc->param_count > 0) {
- slang_info_log_error(A.log, "main() takes no arguments");
- return GL_FALSE;
- }
-
- _slang_codegen_function(&A, mainFunc);
-
- shader->Main = GL_TRUE; /* this shader defines main() */
-
- shader->UnresolvedRefs = A.UnresolvedRefs;
- }
-
- _slang_pop_var_table(o.vartable);
- _slang_delete_var_table(o.vartable);
-
- return GL_TRUE;
-}
-
-static GLboolean
-compile_binary(const unsigned char * prod, slang_code_unit * unit,
- GLuint version,
- slang_unit_type type, slang_info_log * infolog,
- slang_code_unit * builtin, slang_code_unit * downlink,
- struct gl_shader *shader)
-{
- slang_parse_ctx C;
-
- unit->type = type;
-
- /* setup parse context */
- C.I = prod;
- C.L = infolog;
- C.parsing_builtin = (builtin == NULL);
- C.global_scope = GL_TRUE;
- C.atoms = &unit->object->atompool;
- C.type = type;
- C.version = version;
-
- if (!check_revision(&C))
- return GL_FALSE;
-
- if (downlink != NULL) {
- unit->vars.outer_scope = &downlink->vars;
- unit->funs.outer_scope = &downlink->funs;
- unit->structs.outer_scope = &downlink->structs;
- }
-
- /* parse translation unit */
- return parse_code_unit(&C, unit, shader);
-}
-
-static GLboolean
-compile_with_grammar(const char *source,
- slang_code_unit *unit,
- slang_unit_type type,
- slang_info_log *infolog,
- slang_code_unit *builtin,
- struct gl_shader *shader,
- struct gl_sl_pragmas *pragmas,
- unsigned int shader_type,
- unsigned int parsing_builtin)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct sl_pp_purify_options options;
- struct sl_pp_context *context;
- unsigned char *prod;
- GLuint size;
- unsigned int version;
- unsigned int maxVersion;
- int result;
- char errmsg[200] = "";
-
- assert(shader_type == 1 || shader_type == 2);
-
- memset(&options, 0, sizeof(options));
-
- context = sl_pp_context_create(source, &options);
- if (!context) {
- slang_info_log_error(infolog, "out of memory");
- return GL_FALSE;
- }
-
- if (sl_pp_version(context, &version)) {
- slang_info_log_error(infolog, "%s", sl_pp_context_error_message(context));
- sl_pp_context_destroy(context);
- return GL_FALSE;
- }
-
- if (sl_pp_context_add_extension(context, "GL_ARB_draw_buffers") ||
- sl_pp_context_add_extension(context, "GL_ARB_texture_rectangle")) {
- slang_info_log_error(infolog, "%s", sl_pp_context_error_message(context));
- sl_pp_context_destroy(context);
- return GL_FALSE;
- }
-
- if (type == SLANG_UNIT_FRAGMENT_SHADER) {
- sl_pp_context_add_extension(context, "GL_ARB_fragment_coord_conventions");
- }
-
-
-#if FEATURE_es2_glsl
- if (ctx->API == API_OPENGLES2) {
- if (sl_pp_context_add_predefined(context, "GL_ES", "1") ||
- sl_pp_context_add_predefined(context, "GL_FRAGMENT_PRECISION_HIGH", "1")) {
- slang_info_log_error(infolog, "%s", sl_pp_context_error_message(context));
- sl_pp_context_destroy(context);
- return GL_FALSE;
- }
- }
-#else
- (void) ctx;
-#endif
-
-#if FEATURE_ARB_shading_language_120
- maxVersion = 120;
-#elif FEATURE_es2_glsl
- maxVersion = 100;
-#else
- maxVersion = 110;
-#endif
-
- if (version > maxVersion ||
- (version != 100 && version != 110 && version != 120)) {
- slang_info_log_error(infolog,
- "language version %.2f is not supported.",
- version * 0.01);
- sl_pp_context_destroy(context);
- return GL_FALSE;
- }
-
- /* Finally check the syntax and generate its binary representation. */
- result = sl_cl_compile(context,
- shader_type,
- parsing_builtin,
- &prod,
- &size,
- errmsg,
- sizeof(errmsg));
-
- sl_pp_context_destroy(context);
-
- if (result) {
- /*GLint pos;*/
-
- slang_info_log_error(infolog, errmsg);
- /* syntax error (possibly in library code) */
-#if 0
- {
- int line, col;
- char *s;
- s = (char *) _mesa_find_line_column((const GLubyte *) source,
- (const GLubyte *) source + pos,
- &line, &col);
- printf("Error on line %d, col %d: %s\n", line, col, s);
- }
-#endif
- return GL_FALSE;
- }
-
- /* Syntax is okay - translate it to internal representation. */
- if (!compile_binary(prod, unit, version, type, infolog, builtin,
- &builtin[SLANG_BUILTIN_TOTAL - 1],
- shader)) {
- free(prod);
- return GL_FALSE;
- }
- free(prod);
- return GL_TRUE;
-}
-
-static const unsigned char slang_core_gc[] = {
-#include "library/slang_core_gc.h"
-};
-
-static const unsigned char slang_120_core_gc[] = {
-#include "library/slang_120_core_gc.h"
-};
-
-static const unsigned char slang_120_fragment_gc[] = {
-#include "library/slang_builtin_120_fragment_gc.h"
-};
-
-static const unsigned char slang_common_builtin_gc[] = {
-#include "library/slang_common_builtin_gc.h"
-};
-
-static const unsigned char slang_fragment_builtin_gc[] = {
-#include "library/slang_fragment_builtin_gc.h"
-};
-
-static const unsigned char slang_vertex_builtin_gc[] = {
-#include "library/slang_vertex_builtin_gc.h"
-};
-
-static const unsigned char slang_geometry_builtin_gc[] = {
-#include "library/slang_geometry_builtin_gc.h"
-};
-
-static GLboolean
-compile_object(const char *source,
- slang_code_object *object,
- slang_unit_type type,
- slang_info_log *infolog,
- struct gl_shader *shader,
- struct gl_sl_pragmas *pragmas)
-{
- slang_code_unit *builtins = NULL;
- GLuint base_version = 110;
- unsigned int shader_type;
- unsigned int parsing_builtin;
-
- /* set shader type - the syntax is slightly different for different shaders */
- if (type == SLANG_UNIT_FRAGMENT_SHADER || type == SLANG_UNIT_FRAGMENT_BUILTIN) {
- shader_type = 1;
- } else {
- shader_type = 2;
- }
-
- /* enable language extensions */
- parsing_builtin = 1;
-
- /* if parsing user-specified shader, load built-in library */
- if (type == SLANG_UNIT_FRAGMENT_SHADER || type == SLANG_UNIT_VERTEX_SHADER ||
- type == SLANG_UNIT_GEOMETRY_SHADER) {
- /* compile core functionality first */
- if (!compile_binary(slang_core_gc,
- &object->builtin[SLANG_BUILTIN_CORE],
- base_version,
- SLANG_UNIT_FRAGMENT_BUILTIN, infolog,
- NULL, NULL, NULL))
- return GL_FALSE;
-
-#if FEATURE_ARB_shading_language_120
- if (!compile_binary(slang_120_core_gc,
- &object->builtin[SLANG_BUILTIN_120_CORE],
- 120,
- SLANG_UNIT_FRAGMENT_BUILTIN, infolog,
- NULL, &object->builtin[SLANG_BUILTIN_CORE], NULL))
- return GL_FALSE;
-#endif
-
- /* compile common functions and variables, link to core */
- if (!compile_binary(slang_common_builtin_gc,
- &object->builtin[SLANG_BUILTIN_COMMON],
-#if FEATURE_ARB_shading_language_120
- 120,
-#else
- base_version,
-#endif
- SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
-#if FEATURE_ARB_shading_language_120
- &object->builtin[SLANG_BUILTIN_120_CORE],
-#else
- &object->builtin[SLANG_BUILTIN_CORE],
-#endif
- NULL))
- return GL_FALSE;
-
- /* compile target-specific functions and variables, link to common */
- if (type == SLANG_UNIT_FRAGMENT_SHADER) {
- if (!compile_binary(slang_fragment_builtin_gc,
- &object->builtin[SLANG_BUILTIN_TARGET],
- base_version,
- SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
- &object->builtin[SLANG_BUILTIN_COMMON], NULL))
- return GL_FALSE;
-#if FEATURE_ARB_shading_language_120
- if (!compile_binary(slang_120_fragment_gc,
- &object->builtin[SLANG_BUILTIN_TARGET],
- 120,
- SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
- &object->builtin[SLANG_BUILTIN_COMMON], NULL))
- return GL_FALSE;
-#endif
- }
- else if (type == SLANG_UNIT_VERTEX_SHADER) {
- if (!compile_binary(slang_vertex_builtin_gc,
- &object->builtin[SLANG_BUILTIN_TARGET],
- base_version,
- SLANG_UNIT_VERTEX_BUILTIN, infolog, NULL,
- &object->builtin[SLANG_BUILTIN_COMMON], NULL))
- return GL_FALSE;
- }
-#if FEATURE_ARB_geometry_shader4
- else if (type == SLANG_UNIT_GEOMETRY_SHADER) {
- if (!compile_binary(slang_geometry_builtin_gc,
- &object->builtin[SLANG_BUILTIN_TARGET],
- base_version,
- SLANG_UNIT_GEOMETRY_BUILTIN, infolog, NULL,
- &object->builtin[SLANG_BUILTIN_COMMON], NULL))
- return GL_FALSE;
- }
-#endif
-
- /* disable language extensions */
- parsing_builtin = 0;
-
- builtins = object->builtin;
- }
-
- /* compile the actual shader - pass-in built-in library for external shader */
- return compile_with_grammar(source,
- &object->unit,
- type,
- infolog,
- builtins,
- shader,
- pragmas,
- shader_type,
- parsing_builtin);
-}
-
-
-GLboolean
-_slang_compile(GLcontext *ctx, struct gl_shader *shader)
-{
- GLboolean success;
- slang_info_log info_log;
- slang_code_object obj;
- slang_unit_type type;
- GLenum progTarget;
-
- if (shader->Type == GL_VERTEX_SHADER) {
- type = SLANG_UNIT_VERTEX_SHADER;
- }
- else if (shader->Type == GL_FRAGMENT_SHADER) {
- type = SLANG_UNIT_FRAGMENT_SHADER;
- } else {
- assert(shader->Type == GL_GEOMETRY_SHADER_ARB);
- type = SLANG_UNIT_GEOMETRY_SHADER;
- }
-
- if (!shader->Source)
- return GL_FALSE;
-
- ctx->Shader.MemPool = _slang_new_mempool(1024*1024);
-
- shader->Main = GL_FALSE;
-
- /* free the shader's old instructions, etc */
- _mesa_reference_program(ctx, &shader->Program, NULL);
-
- /* allocate new GPU program, parameter lists, etc. */
- if (shader->Type == GL_VERTEX_SHADER)
- progTarget = GL_VERTEX_PROGRAM_ARB;
- else if (shader->Type == GL_FRAGMENT_SHADER)
- progTarget = GL_FRAGMENT_PROGRAM_ARB;
- else
- progTarget = MESA_GEOMETRY_PROGRAM;
- shader->Program = ctx->Driver.NewProgram(ctx, progTarget, 1);
- shader->Program->Parameters = _mesa_new_parameter_list();
- shader->Program->Varying = _mesa_new_parameter_list();
- shader->Program->Attributes = _mesa_new_parameter_list();
-
- slang_info_log_construct(&info_log);
- _slang_code_object_ctr(&obj);
-
- success = compile_object(shader->Source,
- &obj,
- type,
- &info_log,
- shader,
- &shader->Pragmas);
-
- /* free shader's prev info log */
- if (shader->InfoLog) {
- free(shader->InfoLog);
- shader->InfoLog = NULL;
- }
-
- if (info_log.text) {
- /* copy info-log string to shader object */
- shader->InfoLog = _mesa_strdup(info_log.text);
- }
-
- if (info_log.error_flag) {
- success = GL_FALSE;
- }
-
- slang_info_log_destruct(&info_log);
- _slang_code_object_dtr(&obj);
-
- _slang_delete_mempool((slang_mempool *) ctx->Shader.MemPool);
- ctx->Shader.MemPool = NULL;
-
- /* remove any reads of output registers */
-#if 0
- printf("Pre-remove output reads:\n");
- _mesa_print_program(shader->Program);
-#endif
- _mesa_remove_output_reads(shader->Program, PROGRAM_OUTPUT);
- if (shader->Type == GL_VERTEX_SHADER) {
- /* and remove writes to varying vars in vertex programs */
- _mesa_remove_output_reads(shader->Program, PROGRAM_VARYING);
- }
-#if 0
- printf("Post-remove output reads:\n");
- _mesa_print_program(shader->Program);
-#endif
-
- shader->CompileStatus = success;
-
- if (success) {
- if (shader->Pragmas.Optimize &&
- (ctx->Shader.Flags & GLSL_NO_OPT) == 0) {
- _mesa_optimize_program(ctx, shader->Program);
- }
- if ((ctx->Shader.Flags & GLSL_NOP_VERT) &&
- shader->Program->Target == GL_VERTEX_PROGRAM_ARB) {
- _mesa_nop_vertex_program(ctx,
- (struct gl_vertex_program *) shader->Program);
- }
- if ((ctx->Shader.Flags & GLSL_NOP_FRAG) &&
- shader->Program->Target == GL_FRAGMENT_PROGRAM_ARB) {
- _mesa_nop_fragment_program(ctx,
- (struct gl_fragment_program *) shader->Program);
- }
- }
-
- if (ctx->Shader.Flags & GLSL_LOG) {
- _mesa_write_shader_to_file(shader);
- }
-
- return success;
-}
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-05 20:53:59 +0000