xwininfo libXft mesa git update 29 sep 2011

1 files changed, 25 insertions, 1 deletions

diff --git a/mesalib/src/mesa/main/version.c b/mesalib/src/mesa/main/version.c
index a5deeabd2..c49731747 100644
--- a/mesalib/src/mesa/main/version.c
+++ b/mesalib/src/mesa/main/version.c
@@ -44,7 +44,7 @@ override_version(struct gl_context *ctx, GLuint *major, GLuint *minor)
       return;
    }
 
-   n = sscanf(version, "%d.%d", major, minor);
+   n = sscanf(version, "%u.%u", major, minor);
    if (n != 2) {
       fprintf(stderr, "error: invalid value for %s: %s\n", env_var, version);
       return;
@@ -52,6 +52,30 @@ override_version(struct gl_context *ctx, GLuint *major, GLuint *minor)
 }
 
 /**
+ * Override the context's GLSL version if the environment variable
+ * MESA_GLSL_VERSION_OVERRIDE is set. Valid values for
+ * MESA_GLSL_VERSION_OVERRIDE are integers, such as "130".
+ */
+void
+_mesa_override_glsl_version(struct gl_context *ctx)
+{
+   const char *env_var = "MESA_GLSL_VERSION_OVERRIDE";
+   const char *version;
+   int n;
+
+   version = getenv(env_var);
+   if (!version) {
+      return;
+   }
+
+   n = sscanf(version, "%u", &ctx->Const.GLSLVersion);
+   if (n != 1) {
+      fprintf(stderr, "error: invalid value for %s: %s\n", env_var, version);
+      return;
+   }
+}
+
+/**
  * Examine enabled GL extensions to determine GL version.
  * Return major and minor version numbers.
  */