/*
* Copyright © 2009 Intel Corporation
*
* 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 (including the next
* paragraph) 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include "main/core.h" /* for Elements */
#include "glsl_symbol_table.h"
#include "glsl_parser_extras.h"
#include "glsl_types.h"
#include "builtin_types.h"
extern "C" {
#include "program/hash_table.h"
}
hash_table *glsl_type::array_types = NULL;
hash_table *glsl_type::record_types = NULL;
void *glsl_type::mem_ctx = NULL;
void
glsl_type::init_ralloc_type_ctx(void)
{
if (glsl_type::mem_ctx == NULL) {
glsl_type::mem_ctx = ralloc_autofree_context();
assert(glsl_type::mem_ctx != NULL);
}
}
glsl_type::glsl_type(GLenum gl_type,
glsl_base_type base_type, unsigned vector_elements,
unsigned matrix_columns, const char *name) :
gl_type(gl_type),
base_type(base_type),
sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
sampler_type(0),
vector_elements(vector_elements), matrix_columns(matrix_columns),
length(0)
{
init_ralloc_type_ctx();
this->name = ralloc_strdup(this->mem_ctx, name);
/* Neither dimension is zero or both dimensions are zero.
*/
assert((vector_elements == 0) == (matrix_columns == 0));
memset(& fields, 0, sizeof(fields));
}
glsl_type::glsl_type(GLenum gl_type,
enum glsl_sampler_dim dim, bool shadow, bool array,
unsigned type, const char *name) :
gl_type(gl_type),
base_type(GLSL_TYPE_SAMPLER),
sampler_dimensionality(dim), sampler_shadow(shadow),
sampler_array(array), sampler_type(type),
vector_elements(0), matrix_columns(0),
length(0)
{
init_ralloc_type_ctx();
this->name = ralloc_strdup(this->mem_ctx, name);
memset(& fields, 0, sizeof(fields));
}
glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields,
const char *name) :
base_type(GLSL_TYPE_STRUCT),
sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
sampler_type(0),
vector_elements(0), matrix_columns(0),
length(num_fields)
{
unsigned int i;
init_ralloc_type_ctx();
this->name = ralloc_strdup(this->mem_ctx, name);
this->fields.structure = ralloc_array(this->mem_ctx,
glsl_struct_field, length);
for (i = 0; i < length; i++) {
this->fields.structure[i].type = fields[i].type;
this->fields.structure[i].name = ralloc_strdup(this->fields.structure,
fields[i].name);
}
}
static void
add_types_to_symbol_table(glsl_symbol_table *symtab,
const struct glsl_type *types,
unsigned num_types, bool warn)
{
(void) warn;
for (unsigned i = 0; i < num_types; i++) {
symtab->add_type(types[i].name, & types[i]);
}
}
void
glsl_type::generate_100ES_types(glsl_symbol_table *symtab)
{
add_types_to_symbol_table(symtab, builtin_core_types,
Elements(builtin_core_types),
false);
add_types_to_symbol_table(symtab, builtin_structure_types,
Elements(builtin_structure_types),
false);
add_types_to_symbol_table(symtab, void_type, 1, false);
}
void
glsl_type::generate_110_types(glsl_symbol_table *symtab)
{
generate_100ES_types(symtab);
add_types_to_symbol_table(symtab, builtin_110_types,
Elements(builtin_110_types),
false);
add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types,
Elements(builtin_110_deprecated_structure_types),
false);
}
void
glsl_type::generate_120_types(glsl_symbol_table *symtab)
{
generate_110_types(symtab);
add_types_to_symbol_table(symtab, builtin_120_types,
Elements(builtin_120_types), false);
}
void
glsl_type::generate_130_types(glsl_symbol_table *symtab)
{
generate_120_types(symtab);
add_types_to_symbol_table(symtab, builtin_130_types,
Elements(builtin_130_types), false);
generate_EXT_texture_array_types(symtab, false);
}
void
glsl_type::generate_ARB_texture_rectangle_types(glsl_symbol_table *symtab,
bool warn)
{
add_types_to_symbol_table(symtab, builtin_ARB_texture_rectangle_types,
Elements(builtin_ARB_texture_rectangle_types),
warn);
}
void
glsl_type::generate_EXT_texture_array_types(glsl_symbol_table *symtab,
bool warn)
{
add_types_to_symbol_table(symtab, builtin_EXT_texture_array_types,
Elements(builtin_EXT_texture_array_types),
warn);
}
void
_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
{
switch (state->language_version) {
case 100:
assert(state->es_shader);
glsl_type::generate_100ES_types(state->symbols);
break;
case 110:
glsl_type::generate_110_types(state->symbols);
break;
case 120:
glsl_type::generate_120_types(state->symbols);
break;
case 130:
glsl_type::generate_130_types(state->symbols);
break;
default:
/* error */
break;
}
if (state->ARB_texture_rectangle_enable) {
glsl_type::generate_ARB_texture_rectangle_types(state->symbols,
state->ARB_texture_rectangle_warn);
}
if (state->EXT_texture_array_enable && state->language_version < 130) {
// These are already included in 130; don't create twice.
glsl_type::generate_EXT_texture_array_types(state->symbols,
state->EXT_texture_array_warn);
}
}
const glsl_type *glsl_type::get_base_type() const
{
switch (base_type) {
case GLSL_TYPE_UINT:
return uint_type;
case GLSL_TYPE_INT:
return int_type;
case GLSL_TYPE_FLOAT:
return float_type;
case GLSL_TYPE_BOOL:
return bool_type;
default:
return error_type;
}
}
void
_mesa_glsl_release_types(void)
{
if (glsl_type::array_types != NULL) {
hash_table_dtor(glsl_type::array_types);
glsl_type::array_types = NULL;
}
if (glsl_type::record_types != NULL) {
hash_table_dtor(glsl_type::record_types);
glsl_type::record_types = NULL;
}
}
glsl_type::glsl_type(const glsl_type *array, unsigned length) :
base_type(GLSL_TYPE_ARRAY),
sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
sampler_type(0),
vector_elements(0), matrix_columns(0),
name(NULL), length(length)
{
this->fields.array = array;
/* Inherit the gl type of the base. The GL type is used for
* uniform/statevar handling in Mesa and the arrayness of the type
* is represented by the size rather than the type.
*/
this->gl_type = array->gl_type;
/* Allow a maximum of 10 characters for the array size. This is enough
* for 32-bits of ~0. The extra 3 are for the '[', ']', and terminating
* NUL.
*/
const unsigned name_length = strlen(array->name) + 10 + 3;
char *const n = (char *) ralloc_size(this->mem_ctx, name_length);
if (length == 0)
snprintf(n, name_length, "%s[]", array->name);
else
snprintf(n, name_length, "%s[%u]", array->name, length);
this->name = n;
}
const glsl_type *
glsl_type::get_instance(unsigned base_type, unsigned rows, unsigned columns)
{
if (base_type == GLSL_TYPE_VOID)
return void_type;
if ((rows < 1) || (rows > 4) || (columns < 1) || (columns > 4))
return error_type;
/* Treat GLSL vectors as Nx1 matrices.
*/
if (columns == 1) {
switch (base_type) {
case GLSL_TYPE_UINT:
return uint_type + (rows - 1);
case GLSL_TYPE_INT:
return int_type + (rows - 1);
case GLSL_TYPE_FLOAT:
return float_type + (rows - 1);
case GLSL_TYPE_BOOL:
return bool_type + (rows - 1);
default:
return error_type;
}
} else {
if ((base_type != GLSL_TYPE_FLOAT) || (rows == 1))
return error_type;
/* GLSL matrix types are named mat{COLUMNS}x{ROWS}. Only the following
* combinations are valid:
*
* 1 2 3 4
* 1
* 2 x x x
* 3 x x x
* 4 x x x
*/
#define IDX(c,r) (((c-1)*3) + (r-1))
switch (IDX(columns, rows)) {
case IDX(2,2): return mat2_type;
case IDX(2,3): return mat2x3_type;
case IDX(2,4): return mat2x4_type;
case IDX(3,2): return mat3x2_type;
case IDX(3,3): return mat3_type;
case IDX(3,4): return mat3x4_type;
case IDX(4,2): return mat4x2_type;
case IDX(4,3): return mat4x3_type;
case IDX(4,4): return mat4_type;
default: return error_type;
}
}
assert(!"Should not get here.");
return error_type;
}
const glsl_type *
glsl_type::get_array_instance(const glsl_type *base, unsigned array_size)
{
if (array_types == NULL) {
array_types = hash_table_ctor(64, hash_table_string_hash,
hash_table_string_compare);
}
/* Generate a name using the base type pointer in the key. This is
* done because the name of the base type may not be unique across
* shaders. For example, two shaders may have different record types
* named 'foo'.
*/
char key[128];
snprintf(key, sizeof(key), "%p[%u]", (void *) base, array_size);
const glsl_type *t = (glsl_type *) hash_table_find(array_types, key);
if (t == NULL) {
t = new glsl_type(base, array_size);
hash_table_insert(array_types, (void *) t, ralloc_strdup(mem_ctx, key));
}
assert(t->base_type == GLSL_TYPE_ARRAY);
assert(t->length == array_size);
assert(t->fields.array == base);
return t;
}
int
glsl_type::record_key_compare(const void *a, const void *b)
{
const glsl_type *const key1 = (glsl_type *) a;
const glsl_type *const key2 = (glsl_type *) b;
/* Return zero is the types match (there is zero difference) or non-zero
* otherwise.
*/
if (strcmp(key1->name, key2->name) != 0)
return 1;
if (key1->length != key2->length)
return 1;
for (unsigned i = 0; i < key1->length; i++) {
if (key1->fields.structure[i].type != key2->fields.structure[i].type)
return 1;
if (strcmp(key1->fields.structure[i].name,
key2->fields.structure[i].name) != 0)
return 1;
}
return 0;
}
unsigned
glsl_type::record_key_hash(const void *a)
{
const glsl_type *const key = (glsl_type *) a;
char hash_key[128];
unsigned size = 0;
size = snprintf(hash_key, sizeof(hash_key), "%08x", key->length);
for (unsigned i = 0; i < key->length; i++) {
if (size >= sizeof(hash_key))
break;
size += snprintf(& hash_key[size], sizeof(hash_key) - size,
"%p", (void *) key->fields.structure[i].type);
}
return hash_table_string_hash(& hash_key);
}
const glsl_type *
glsl_type::get_record_instance(const glsl_struct_field *fields,
unsigned num_fields,
const char *name)
{
const glsl_type key(fields, num_fields, name);
if (record_types == NULL) {
record_types = hash_table_ctor(64, record_key_hash, record_key_compare);
}
const glsl_type *t = (glsl_type *) hash_table_find(record_types, & key);
if (t == NULL) {
t = new glsl_type(fields, num_fields, name);
hash_table_insert(record_types, (void *) t, t);
}
assert(t->base_type == GLSL_TYPE_STRUCT);
assert(t->length == num_fields);
assert(strcmp(t->name, name) == 0);
return t;
}
const glsl_type *
glsl_type::field_type(const char *name) const
{
if (this->base_type != GLSL_TYPE_STRUCT)
return error_type;
for (unsigned i = 0; i < this->length; i++) {
if (strcmp(name, this->fields.structure[i].name) == 0)
return this->fields.structure[i].type;
}
return error_type;
}
int
glsl_type::field_index(const char *name) const
{
if (this->base_type != GLSL_TYPE_STRUCT)
return -1;
for (unsigned i = 0; i < this->length; i++) {
if (strcmp(name, this->fields.structure[i].name) == 0)
return i;
}
return -1;
}
unsigned
glsl_type::component_slots() const
{
switch (this->base_type) {
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
case GLSL_TYPE_FLOAT:
case GLSL_TYPE_BOOL:
return this->components();
case GLSL_TYPE_STRUCT: {
unsigned size = 0;
for (unsigned i = 0; i < this->length; i++)
size += this->fields.structure[i].type->component_slots();
return size;
}
case GLSL_TYPE_ARRAY:
return this->length * this->fields.array->component_slots();
default:
return 0;
}
}