Move stand-alone compiler main routine to main.cpp
This commit is contained in:
Ian Romanick
175
main.cpp
Normal file
175
main.cpp
Normal file
@@ -0,0 +1,175 @@
|
||||
/*
|
||||
* Copyright © 2008, 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 <cstdlib>
|
||||
#include <cstdio>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <fcntl.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "ast.h"
|
||||
#include "glsl_parser_extras.h"
|
||||
#include "glsl_parser.h"
|
||||
#include "ir_optimization.h"
|
||||
#include "ir_print_visitor.h"
|
||||
#include "ir_reader.h"
|
||||
|
||||
|
||||
static char *
|
||||
load_text_file(const char *file_name, size_t *size)
|
||||
{
|
||||
char *text = NULL;
|
||||
struct stat st;
|
||||
ssize_t total_read = 0;
|
||||
int fd = open(file_name, O_RDONLY);
|
||||
|
||||
*size = 0;
|
||||
if (fd < 0) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (fstat(fd, & st) == 0) {
|
||||
text = (char *) malloc(st.st_size + 1);
|
||||
if (text != NULL) {
|
||||
do {
|
||||
ssize_t bytes = read(fd, text + total_read,
|
||||
st.st_size - total_read);
|
||||
if (bytes < 0) {
|
||||
free(text);
|
||||
text = NULL;
|
||||
break;
|
||||
}
|
||||
|
||||
if (bytes == 0) {
|
||||
break;
|
||||
}
|
||||
|
||||
total_read += bytes;
|
||||
} while (total_read < st.st_size);
|
||||
|
||||
text[total_read] = '\0';
|
||||
*size = total_read;
|
||||
}
|
||||
}
|
||||
|
||||
close(fd);
|
||||
|
||||
return text;
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
struct _mesa_glsl_parse_state state;
|
||||
char *shader;
|
||||
size_t shader_len;
|
||||
exec_list instructions;
|
||||
|
||||
if (argc < 3) {
|
||||
printf("Usage: %s [v|g|f|i] <shader_file>\n", argv[0]);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
memset(& state, 0, sizeof(state));
|
||||
|
||||
switch (argv[1][0]) {
|
||||
case 'v':
|
||||
state.target = vertex_shader;
|
||||
break;
|
||||
case 'g':
|
||||
state.target = geometry_shader;
|
||||
break;
|
||||
case 'f':
|
||||
state.target = fragment_shader;
|
||||
break;
|
||||
case 'i':
|
||||
state.target = ir_shader;
|
||||
break;
|
||||
default:
|
||||
printf("Usage: %s [v|g|f|i] <shader_file>\n", argv[0]);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
shader = load_text_file(argv[2], & shader_len);
|
||||
|
||||
state.scanner = NULL;
|
||||
state.translation_unit.make_empty();
|
||||
state.symbols = new glsl_symbol_table;
|
||||
state.error = false;
|
||||
state.temp_index = 0;
|
||||
state.loop_or_switch_nesting = NULL;
|
||||
state.ARB_texture_rectangle_enable = true;
|
||||
|
||||
if (state.target != ir_shader) {
|
||||
_mesa_glsl_lexer_ctor(& state, shader, shader_len);
|
||||
_mesa_glsl_parse(& state);
|
||||
_mesa_glsl_lexer_dtor(& state);
|
||||
|
||||
foreach_list_const(n, &state.translation_unit) {
|
||||
ast_node *ast = exec_node_data(ast_node, n, link);
|
||||
ast->print();
|
||||
}
|
||||
|
||||
if (!state.error && !state.translation_unit.is_empty())
|
||||
_mesa_ast_to_hir(&instructions, &state);
|
||||
} else {
|
||||
/* FINISHME: We should initialize this to the max GLSL version supported
|
||||
* FINISHME: by the driver. At the moment, we don't know what that is.
|
||||
*/
|
||||
state.language_version = 130;
|
||||
_mesa_glsl_initialize_types(&state);
|
||||
|
||||
_mesa_glsl_read_ir(&state, &instructions, shader);
|
||||
}
|
||||
|
||||
/* Optimization passes */
|
||||
if (!state.error && !instructions.is_empty()) {
|
||||
bool progress;
|
||||
do {
|
||||
progress = false;
|
||||
|
||||
progress = do_function_inlining(&instructions) || progress;
|
||||
progress = do_if_simplification(&instructions) || progress;
|
||||
progress = do_copy_propagation(&instructions) || progress;
|
||||
progress = do_dead_code_local(&instructions) || progress;
|
||||
progress = do_dead_code_unlinked(&instructions) || progress;
|
||||
progress = do_constant_variable_unlinked(&instructions) || progress;
|
||||
progress = do_constant_folding(&instructions) || progress;
|
||||
progress = do_vec_index_to_swizzle(&instructions) || progress;
|
||||
progress = do_swizzle_swizzle(&instructions) || progress;
|
||||
} while (progress);
|
||||
}
|
||||
|
||||
/* Print out the resulting IR */
|
||||
printf("\n\n");
|
||||
|
||||
if (!state.error) {
|
||||
_mesa_print_ir(&instructions, &state);
|
||||
}
|
||||
|
||||
delete state.symbols;
|
||||
|
||||
return state.error != 0;
|
||||
}
|
||||
Reference in New Issue
Block a user