diff options
Diffstat (limited to 'main.cpp')
| -rw-r--r-- | main.cpp | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/main.cpp b/main.cpp new file mode 100644 index 0000000000..a6d6c47bfd --- /dev/null +++ b/main.cpp @@ -0,0 +1,237 @@ +/* + * 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 <getopt.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> + +extern "C" { +#include <talloc.h> +} + +#include "ast.h" +#include "glsl_parser_extras.h" +#include "glsl_parser.h" +#include "ir_optimization.h" +#include "ir_print_visitor.h" +#include "program.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; +} + + +void +usage_fail(const char *name) +{ + printf("%s <filename.frag|filename.vert>\n", name); + exit(EXIT_FAILURE); +} + + +int dump_ast = 0; +int dump_lir = 0; +int do_link = 0; + +const struct option compiler_opts[] = { + { "dump-ast", 0, &dump_ast, 1 }, + { "dump-lir", 0, &dump_lir, 1 }, + { "link", 0, &do_link, 1 }, + { NULL, 0, NULL, 0 } +}; + +void +compile_shader(struct glsl_shader *shader) +{ + struct _mesa_glsl_parse_state state; + + memset(& state, 0, sizeof(state)); + switch (shader->Type) { + case GL_VERTEX_SHADER: state.target = vertex_shader; break; + case GL_FRAGMENT_SHADER: state.target = fragment_shader; break; + case GL_GEOMETRY_SHADER: state.target = geometry_shader; break; + } + + state.scanner = NULL; + state.translation_unit.make_empty(); + state.symbols = new glsl_symbol_table; + state.info_log = talloc_strdup(shader, ""); + state.error = false; + state.temp_index = 0; + state.loop_or_switch_nesting = NULL; + state.ARB_texture_rectangle_enable = true; + + _mesa_glsl_lexer_ctor(& state, shader->Source, shader->SourceLen); + _mesa_glsl_parse(& state); + _mesa_glsl_lexer_dtor(& state); + + if (dump_ast) { + foreach_list_const(n, &state.translation_unit) { + ast_node *ast = exec_node_data(ast_node, n, link); + ast->print(); + } + printf("\n\n"); + } + + shader->ir.make_empty(); + if (!state.error && !state.translation_unit.is_empty()) + _mesa_ast_to_hir(&shader->ir, &state); + + /* Optimization passes */ + if (!state.error && !shader->ir.is_empty()) { + bool progress; + do { + progress = false; + + progress = do_function_inlining(&shader->ir) || progress; + progress = do_if_simplification(&shader->ir) || progress; + progress = do_copy_propagation(&shader->ir) || progress; + progress = do_dead_code_local(&shader->ir) || progress; + progress = do_dead_code_unlinked(&shader->ir) || progress; + progress = do_constant_variable_unlinked(&shader->ir) || progress; + progress = do_constant_folding(&shader->ir) || progress; + progress = do_vec_index_to_swizzle(&shader->ir) || progress; + progress = do_swizzle_swizzle(&shader->ir) || progress; + } while (progress); + } + + /* Print out the resulting IR */ + if (!state.error && dump_lir) { + _mesa_print_ir(&shader->ir, &state); + } + + shader->symbols = state.symbols; + shader->CompileStatus = !state.error; + + if (shader->InfoLog) + talloc_free(shader->InfoLog); + + shader->InfoLog = state.info_log; + + return; +} + +int +main(int argc, char **argv) +{ + int status = EXIT_SUCCESS; + + int c; + int idx = 0; + while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1) + /* empty */ ; + + + if (argc <= optind) + usage_fail(argv[0]); + + struct glsl_program whole_program; + memset(&whole_program, 0, sizeof(whole_program)); + + for (/* empty */; argc > optind; optind++) { + whole_program.Shaders = (struct glsl_shader **) + realloc(whole_program.Shaders, + sizeof(struct glsl_shader *) * (whole_program.NumShaders + 1)); + assert(whole_program.Shaders != NULL); + + /* talloc context should probably be whole_program */ + struct glsl_shader *shader = talloc_zero(NULL, glsl_shader); + + whole_program.Shaders[whole_program.NumShaders] = shader; + whole_program.NumShaders++; + + const unsigned len = strlen(argv[optind]); + if (len < 6) + usage_fail(argv[0]); + + const char *const ext = & argv[optind][len - 5]; + if (strncmp(".vert", ext, 5) == 0) + shader->Type = GL_VERTEX_SHADER; + else if (strncmp(".geom", ext, 5) == 0) + shader->Type = GL_GEOMETRY_SHADER; + else if (strncmp(".frag", ext, 5) == 0) + shader->Type = GL_FRAGMENT_SHADER; + else + usage_fail(argv[0]); + + shader->Source = load_text_file(argv[optind], &shader->SourceLen); + + compile_shader(shader); + + if (!shader->CompileStatus) { + printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog); + status = EXIT_FAILURE; + break; + } + } + + if ((status == EXIT_SUCCESS) && do_link) { + link_shaders(&whole_program); + status = (whole_program.LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE; + } + + return status; +} |