Mesa (master): mesa: add new MESA_GLSL flag for printing shader cache debug info

[Timothy Arceri]

Module: Mesa
Branch: master
Commit: 30aa22dec0db401abd919b051bdfed54aa9258d1
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=30aa22dec0db401abd919b051bdfed54aa9258d1

Author: Timothy Arceri <timothy.arceri at collabora.com>
Date:   Fri Jul  8 12:44:44 2016 +1000

mesa: add new MESA_GLSL flag for printing shader cache debug info

Reviewed-by: Eric Anholt <eric at anholt.net>

---

 docs/shading.html         | 1 +
 src/mesa/main/mtypes.h    | 1 +
 src/mesa/main/shaderapi.c | 2 ++
 3 files changed, 4 insertions(+)

diff --git a/docs/shading.html b/docs/shading.html
index b0ed249..e44035a 100644
--- a/docs/shading.html
+++ b/docs/shading.html
@@ -49,6 +49,7 @@ execution.  These are generally used for debugging.
 <li><b>log</b> - log all GLSL shaders to files.
     The filenames will be "shader_X.vert" or "shader_X.frag" where X
     the shader ID.
+<li><b>cache_info</b> - print debug information about shader cache
 <li><b>nopt</b> - disable compiler optimizations
 <li><b>opt</b> - force compiler optimizations
 <li><b>uniform</b> - print message to stdout when glUniform is called
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 1cc8322..a2280e2 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2837,6 +2837,7 @@ struct gl_shader_program
 #define GLSL_USE_PROG 0x80  /**< Log glUseProgram calls */
 #define GLSL_REPORT_ERRORS 0x100  /**< Print compilation errors */
 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
+#define GLSL_CACHE_INFO 0x400 /**< Print debug information about shader cache */
 
 
 /**
diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 272aa51..4667866 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -77,6 +77,8 @@ _mesa_get_shader_flags(void)
          flags |= GLSL_DUMP;
       if (strstr(env, "log"))
          flags |= GLSL_LOG;
+      if (strstr(env, "cache_info"))
+         flags |= GLSL_CACHE_INFO;
       if (strstr(env, "nopvert"))
          flags |= GLSL_NOP_VERT;
       if (strstr(env, "nopfrag"))