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/*
* Mesa 3-D graphics library
* Version: 6.3
*
* Copyright (C) 2005 Brian Paul 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_storage.c
* slang variable storage
* \author Michal Krol
*/
#include "imports.h"
#include "slang_utility.h"
#include "slang_storage.h"
#include "slang_assemble.h"
/* slang_storage_array */
void slang_storage_array_construct (slang_storage_array *arr)
{
arr->type = slang_stor_aggregate;
arr->aggregate = NULL;
arr->length = 0;
}
void slang_storage_array_destruct (slang_storage_array *arr)
{
if (arr->aggregate != NULL)
{
slang_storage_aggregate_destruct (arr->aggregate);
slang_alloc_free (arr->aggregate);
}
}
/* slang_storage_aggregate */
void slang_storage_aggregate_construct (slang_storage_aggregate *agg)
{
agg->arrays = NULL;
agg->count = 0;
}
void slang_storage_aggregate_destruct (slang_storage_aggregate *agg)
{
unsigned int i;
for (i = 0; i < agg->count; i++)
slang_storage_array_destruct (agg->arrays + i);
slang_alloc_free (agg->arrays);
}
static slang_storage_array *slang_storage_aggregate_push_new (slang_storage_aggregate *agg)
{
slang_storage_array *arr = NULL;
agg->arrays = (slang_storage_array *) slang_alloc_realloc (agg->arrays, agg->count * sizeof (
slang_storage_array), (agg->count + 1) * sizeof (slang_storage_array));
if (agg->arrays != NULL)
{
arr = agg->arrays + agg->count;
slang_storage_array_construct (arr);
agg->count++;
}
return arr;
}
/* _slang_aggregate_variable() */
static int aggregate_vector (slang_storage_aggregate *agg, slang_storage_type basic_type,
unsigned int row_count)
{
slang_storage_array *arr = slang_storage_aggregate_push_new (agg);
if (arr == NULL)
return 0;
arr->type = basic_type;
arr->length = row_count;
return 1;
}
static int aggregate_matrix (slang_storage_aggregate *agg, slang_storage_type basic_type,
unsigned int dimension)
{
slang_storage_array *arr = slang_storage_aggregate_push_new (agg);
if (arr == NULL)
return 0;
arr->type = slang_stor_aggregate;
arr->length = dimension;
arr->aggregate = (slang_storage_aggregate *) slang_alloc_malloc (sizeof (
slang_storage_aggregate));
if (arr->aggregate == NULL)
return 0;
slang_storage_aggregate_construct (arr->aggregate);
if (!aggregate_vector (arr->aggregate, basic_type, dimension))
return 0;
return 1;
}
static int aggregate_variables (slang_storage_aggregate *agg, const slang_variable_scope *vars,
slang_function_scope *funcs, slang_struct_scope *structs)
{
unsigned int i;
for (i = 0; i < vars->num_variables; i++)
if (!_slang_aggregate_variable (agg, &vars->variables[i].type.specifier,
vars->variables[i].array_size, funcs, structs))
return 0;
return 1;
}
int _slang_aggregate_variable (slang_storage_aggregate *agg, slang_type_specifier *spec,
slang_operation *array_size, slang_function_scope *funcs, slang_struct_scope *structs)
{
switch (spec->type)
{
case slang_spec_bool:
return aggregate_vector (agg, slang_stor_bool, 1);
case slang_spec_bvec2:
return aggregate_vector (agg, slang_stor_bool, 2);
case slang_spec_bvec3:
return aggregate_vector (agg, slang_stor_bool, 3);
case slang_spec_bvec4:
return aggregate_vector (agg, slang_stor_bool, 4);
case slang_spec_int:
return aggregate_vector (agg, slang_stor_int, 1);
case slang_spec_ivec2:
return aggregate_vector (agg, slang_stor_int, 2);
case slang_spec_ivec3:
return aggregate_vector (agg, slang_stor_int, 3);
case slang_spec_ivec4:
return aggregate_vector (agg, slang_stor_int, 4);
case slang_spec_float:
return aggregate_vector (agg, slang_stor_float, 1);
case slang_spec_vec2:
return aggregate_vector (agg, slang_stor_float, 2);
case slang_spec_vec3:
return aggregate_vector (agg, slang_stor_float, 3);
case slang_spec_vec4:
return aggregate_vector (agg, slang_stor_float, 4);
case slang_spec_mat2:
return aggregate_matrix (agg, slang_stor_float, 2);
case slang_spec_mat3:
return aggregate_matrix (agg, slang_stor_float, 3);
case slang_spec_mat4:
return aggregate_matrix (agg, slang_stor_float, 4);
case slang_spec_sampler1D:
case slang_spec_sampler2D:
case slang_spec_sampler3D:
case slang_spec_samplerCube:
case slang_spec_sampler1DShadow:
case slang_spec_sampler2DShadow:
return aggregate_vector (agg, slang_stor_int, 1);
case slang_spec_struct:
return aggregate_variables (agg, spec->_struct->fields, funcs, structs);
case slang_spec_array:
{
slang_storage_array *arr;
slang_assembly_file file;
slang_assembly_flow_control flow;
slang_assembly_name_space space;
slang_assembly_local_info info;
slang_assembly_stack_info stk;
arr = slang_storage_aggregate_push_new (agg);
if (arr == NULL)
return 0;
arr->type = slang_stor_aggregate;
arr->aggregate = (slang_storage_aggregate *) slang_alloc_malloc (sizeof (
slang_storage_aggregate));
if (arr->aggregate == NULL)
return 0;
slang_storage_aggregate_construct (arr->aggregate);
if (!_slang_aggregate_variable (arr->aggregate, spec->_array, NULL, funcs, structs))
return 0;
slang_assembly_file_construct (&file);
space.funcs = funcs;
space.structs = structs;
/* XXX: vars! */
space.vars = NULL;
if (!_slang_assemble_operation (&file, array_size, 0, &flow, &space, &info, &stk))
{
slang_assembly_file_destruct (&file);
return 0;
}
/* TODO: evaluate array size */
slang_assembly_file_destruct (&file);
arr->length = 256;
}
return 1;
default:
return 0;
}
}
/* _slang_sizeof_aggregate() */
unsigned int _slang_sizeof_aggregate (const slang_storage_aggregate *agg)
{
unsigned int i, size = 0;
for (i = 0; i < agg->count; i++)
{
unsigned int element_size;
if (agg->arrays[i].type == slang_stor_aggregate)
element_size = _slang_sizeof_aggregate (agg->arrays[i].aggregate);
else
element_size = sizeof (GLfloat);
size += element_size * agg->arrays[i].length;
}
return size;
}
/* _slang_flatten_aggregate () */
int _slang_flatten_aggregate (slang_storage_aggregate *flat, const slang_storage_aggregate *agg)
{
unsigned int i;
for (i = 0; i < agg->count; i++)
{
unsigned int j;
for (j = 0; j < agg->arrays[i].length; j++)
{
if (agg->arrays[i].type == slang_stor_aggregate)
{
if (!_slang_flatten_aggregate (flat, agg->arrays[i].aggregate))
return 0;
}
else
{
slang_storage_array *arr;
arr = slang_storage_aggregate_push_new (flat);
if (arr == NULL)
return 0;
arr->type = agg->arrays[i].type;
arr->length = 1;
}
}
}
return 1;
}
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