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mesa: add GLSL_SOURCE

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many times I just want to dump glsl and not a trillion lines of IR

Reviewed-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18280>
This commit is contained in:
Mike Blumenkrantz 2022-08-22 10:48:45 -04:00 committed by Marge Bot
parent 9701b9098f
commit 8b15025a2b
3 changed files with 6 additions and 2 deletions
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3
docs/shading.rst
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@ -13,7 +13,8 @@ The **MESA_GLSL** environment variable can be set to a comma-separated
list of keywords to control some aspects of the GLSL compiler and shader
execution. These are generally used for debugging.
- **dump** - print GLSL shader code to stdout at link time
- **dump** - print GLSL shader code, IR, and NIR to stdout at link time
- **source** - print GLSL shader code to stdout at link time
- **log** - log all GLSL shaders to files. The filenames will be
"shader_X.vert" or "shader_X.frag" where X the shader ID.
- **cache_info** - print debug information about shader cache

1
src/mesa/main/mtypes.h
View File

@ -2296,6 +2296,7 @@ struct gl_ati_fragment_shader_state
#define GLSL_DUMP_ON_ERROR 0x80 /**< Dump shaders to stderr on compile error */
#define GLSL_CACHE_INFO 0x100 /**< Print debug information about shader cache */
#define GLSL_CACHE_FALLBACK 0x200 /**< Force shader cache fallback paths */
#define GLSL_SOURCE 0x400 /**< Only dump GLSL */
/**

4
src/mesa/main/shaderapi.c
View File

@ -135,6 +135,8 @@ _mesa_get_shader_flags(void)
flags |= GLSL_DUMP;
if (strstr(env, "log"))
flags |= GLSL_LOG;
if (strstr(env, "source"))
flags |= GLSL_SOURCE;
#endif
if (strstr(env, "cache_fb"))
flags |= GLSL_CACHE_FALLBACK;
@ -1216,7 +1218,7 @@ _mesa_compile_shader(struct gl_context *ctx, struct gl_shader *sh)
*/
sh->CompileStatus = COMPILE_FAILURE;
} else {
if (ctx->_Shader->Flags & GLSL_DUMP) {
if (ctx->_Shader->Flags & (GLSL_DUMP | GLSL_SOURCE)) {
_mesa_log("GLSL source for %s shader %d:\n",
_mesa_shader_stage_to_string(sh->Stage), sh->Name);
_mesa_log_direct(sh->Source);