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glsl: Improve usage message for glsl_compiler

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The new usage message lists possible command line options. (Newcomers to Mesa
currently have to trawl through the source to find the command line options,
and we should save them from that trouble.)

Example Output
--------------
usage: ./glsl_compiler [options] <file.vert | file.geom | file.frag>

Possible options are:
    --glsl-es
    --dump-ast
    --dump-hir
    --dump-lir
    --link
This commit is contained in:
Chad Versace 2010-11-17 15:28:36 -08:00 • committed by Kenneth Graunke
parent 007f488150
commit 7819435f2e
1 changed files with 19 additions and 9 deletions
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28
src/glsl/main.cpp
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@ -146,15 +146,6 @@ load_text_file(void *ctx, const char *file_name)
return text;
}
void
usage_fail(const char *name)
{
printf("%s <filename.frag|filename.vert>\n", name);
exit(EXIT_FAILURE);
}
int glsl_es = 0;
int dump_ast = 0;
int dump_hir = 0;
@ -170,6 +161,25 @@ const struct option compiler_opts[] = {
{ NULL, 0, NULL, 0 }
};
/**
* \brief Print proper usage and exit with failure.
*/
void
usage_fail(const char *name)
{
const char *header =
"usage: %s [options] <file.vert | file.geom | file.frag>\n"
"\n"
"Possible options are:\n";
printf(header, name, name);
for (const struct option *o = compiler_opts; o->name != 0; ++o) {
printf(" --%s\n", o->name);
}
exit(EXIT_FAILURE);
}
void
compile_shader(struct gl_context *ctx, struct gl_shader *shader)
{