1 /*
2 * Copyright © 2008, 2009 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23 #include <cstdlib>
24 #include <cstdio>
25 #include <getopt.h>
26
27 #include <sys/types.h>
28 #include <sys/stat.h>
29 #include <fcntl.h>
30 #include <unistd.h>
31
32 #include "ast.h"
33 #include "glsl_parser_extras.h"
34 #include "glsl_parser.h"
35 #include "ir_optimization.h"
36 #include "ir_print_visitor.h"
37 #include "program.h"
38 #include "loop_analysis.h"
39 #include "src/mesa/main/shaderobj.h"
40
41 static void
initialize_context(struct gl_context * ctx,gl_api api)42 initialize_context(struct gl_context *ctx, gl_api api)
43 {
44 memset(ctx, 0, sizeof(*ctx));
45
46 ctx->API = api;
47
48 ctx->Extensions.ARB_draw_buffers = GL_TRUE;
49 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
50 ctx->Extensions.EXT_texture_array = GL_TRUE;
51 ctx->Extensions.NV_texture_rectangle = GL_TRUE;
52
53 /* 1.10 minimums. */
54 ctx->Const.MaxLights = 8;
55 ctx->Const.MaxClipPlanes = 8;
56 ctx->Const.MaxTextureUnits = 2;
57
58 /* More than the 1.10 minimum to appease parser tests taken from
59 * apps that (hopefully) already checked the number of coords.
60 */
61 ctx->Const.MaxTextureCoordUnits = 4;
62
63 ctx->Const.VertexProgram.MaxAttribs = 16;
64 ctx->Const.VertexProgram.MaxUniformComponents = 512;
65 ctx->Const.MaxVarying = 8;
66 ctx->Const.MaxVertexTextureImageUnits = 0;
67 ctx->Const.MaxCombinedTextureImageUnits = 2;
68 ctx->Const.MaxTextureImageUnits = 2;
69 ctx->Const.FragmentProgram.MaxUniformComponents = 64;
70
71 ctx->Const.MaxDrawBuffers = 2;
72 }
73
74 /* Returned string will have 'ctx' as its hieralloc owner. */
75 static char *
load_text_file(void * ctx,const char * file_name)76 load_text_file(void *ctx, const char *file_name)
77 {
78 char *text = NULL;
79 struct stat st;
80 ssize_t total_read = 0;
81 int fd = open(file_name, O_RDONLY);
82
83 if (fd < 0) {
84 return NULL;
85 }
86
87 if (fstat(fd, & st) == 0) {
88 text = (char *) hieralloc_size(ctx, st.st_size + 1);
89 if (text != NULL) {
90 do {
91 ssize_t bytes = read(fd, text + total_read,
92 st.st_size - total_read);
93 if (bytes < 0) {
94 free(text);
95 text = NULL;
96 break;
97 }
98
99 if (bytes == 0) {
100 break;
101 }
102
103 total_read += bytes;
104 } while (total_read < st.st_size);
105
106 text[total_read] = '\0';
107 }
108 }
109
110 close(fd);
111
112 return text;
113 }
114
115 int glsl_es = 0;
116 int dump_ast = 0;
117 int dump_hir = 0;
118 int dump_lir = 0;
119 int do_link = 0;
120
121 const struct option compiler_opts[] = {
122 { "glsl-es", 0, &glsl_es, 1 },
123 { "dump-ast", 0, &dump_ast, 1 },
124 { "dump-hir", 0, &dump_hir, 1 },
125 { "dump-lir", 0, &dump_lir, 1 },
126 { "link", 0, &do_link, 1 },
127 { NULL, 0, NULL, 0 }
128 };
129
130 /**
131 * \brief Print proper usage and exit with failure.
132 */
133 void
usage_fail(const char * name)134 usage_fail(const char *name)
135 {
136
137 const char *header =
138 "usage: %s [options] <file.vert | file.geom | file.frag>\n"
139 "\n"
140 "Possible options are:\n";
141 printf(header, name, name);
142 for (const struct option *o = compiler_opts; o->name != 0; ++o) {
143 printf(" --%s\n", o->name);
144 }
145 exit(EXIT_FAILURE);
146 }
147
148
149 void
compile_shader(struct gl_context * ctx,struct gl_shader * shader)150 compile_shader(struct gl_context *ctx, struct gl_shader *shader)
151 {
152 struct _mesa_glsl_parse_state *state =
153 new(shader) _mesa_glsl_parse_state(ctx, shader->Type, shader);
154
155 const char *source = shader->Source;
156 state->error = preprocess(state, &source, &state->info_log,
157 state->extensions, ctx->API);
158
159 if (!state->error) {
160 _mesa_glsl_lexer_ctor(state, source);
161 _mesa_glsl_parse(state);
162 _mesa_glsl_lexer_dtor(state);
163 }
164
165 if (dump_ast) {
166 foreach_list_const(n, &state->translation_unit) {
167 ast_node *ast = exec_node_data(ast_node, n, link);
168 ast->print();
169 }
170 printf("\n\n");
171 }
172
173 shader->ir = new(shader) exec_list;
174 if (!state->error && !state->translation_unit.is_empty())
175 _mesa_ast_to_hir(shader->ir, state);
176
177 /* Print out the unoptimized IR. */
178 if (!state->error && dump_hir) {
179 validate_ir_tree(shader->ir);
180 _mesa_print_ir(shader->ir, state);
181 }
182
183 /* Optimization passes */
184 if (!state->error && !shader->ir->is_empty()) {
185 bool progress;
186 do {
187 progress = do_common_optimization(shader->ir, false, 32);
188 } while (progress);
189
190 validate_ir_tree(shader->ir);
191 }
192
193
194 /* Print out the resulting IR */
195 if (!state->error && dump_lir) {
196 _mesa_print_ir(shader->ir, state);
197 }
198
199 shader->symbols = state->symbols;
200 shader->CompileStatus = !state->error;
201 shader->Version = state->language_version;
202 memcpy(shader->builtins_to_link, state->builtins_to_link,
203 sizeof(shader->builtins_to_link[0]) * state->num_builtins_to_link);
204 shader->num_builtins_to_link = state->num_builtins_to_link;
205
206 if (shader->InfoLog)
207 hieralloc_free(shader->InfoLog);
208
209 shader->InfoLog = state->info_log;
210
211 /* Retain any live IR, but trash the rest. */
212 reparent_ir(shader->ir, shader);
213
214 hieralloc_free(state);
215
216 return;
217 }
218
219 int
main(int argc,char ** argv)220 main(int argc, char **argv)
221 {
222 int status = EXIT_SUCCESS;
223 struct gl_context local_ctx;
224 struct gl_context *ctx = &local_ctx;
225
226 int c;
227 int idx = 0;
228 while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1)
229 /* empty */ ;
230
231
232 if (argc <= optind)
233 usage_fail(argv[0]);
234
235 initialize_context(ctx, (glsl_es) ? API_OPENGLES2 : API_OPENGL);
236
237 struct gl_shader_program *whole_program;
238
239 whole_program = hieralloc_zero (NULL, struct gl_shader_program);
240 assert(whole_program != NULL);
241
242 for (/* empty */; argc > optind; optind++) {
243 whole_program->Shaders = (struct gl_shader **)
244 hieralloc_realloc(whole_program, whole_program->Shaders,
245 struct gl_shader *, whole_program->NumShaders + 1);
246 assert(whole_program->Shaders != NULL);
247
248 struct gl_shader *shader = hieralloc_zero(whole_program, gl_shader);
249
250 whole_program->Shaders[whole_program->NumShaders] = shader;
251 whole_program->NumShaders++;
252
253 const unsigned len = strlen(argv[optind]);
254 if (len < 6)
255 usage_fail(argv[0]);
256
257 const char *const ext = & argv[optind][len - 5];
258 if (strncmp(".vert", ext, 5) == 0)
259 shader->Type = GL_VERTEX_SHADER;
260 else if (strncmp(".geom", ext, 5) == 0)
261 shader->Type = GL_GEOMETRY_SHADER;
262 else if (strncmp(".frag", ext, 5) == 0)
263 shader->Type = GL_FRAGMENT_SHADER;
264 else
265 usage_fail(argv[0]);
266
267 shader->Source = load_text_file(whole_program, argv[optind]);
268 if (shader->Source == NULL) {
269 printf("File \"%s\" does not exist.\n", argv[optind]);
270 exit(EXIT_FAILURE);
271 }
272
273 compile_shader(ctx, shader);
274
275 if (!shader->CompileStatus) {
276 printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog);
277 status = EXIT_FAILURE;
278 break;
279 }
280 }
281
282 if ((status == EXIT_SUCCESS) && do_link) {
283 link_shaders(ctx, whole_program);
284 status = (whole_program->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
285
286 if (strlen(whole_program->InfoLog) > 0)
287 printf("Info log for linking:\n%s\n", whole_program->InfoLog);
288 }
289
290 for (unsigned i = 0; i < MESA_SHADER_TYPES; i++)
291 hieralloc_free(whole_program->_LinkedShaders[i]);
292
293 hieralloc_free(whole_program);
294 _mesa_glsl_release_types();
295 _mesa_glsl_release_functions();
296
297 return status;
298 }
299