# HG changeset patch
# User nkeynes
# Date 1289461897 -36000
# Node ID 1038800cecd86c07a78934dcac4a95e7fbac484d
# Parent  da6124fceec6adb665a29051f9dc18cd2b33e09f
Add convenience gl_check_error() function

--- a/src/pvr2/glutil.c	Wed Nov 10 08:37:42 2010 +1000
+++ b/src/pvr2/glutil.c	Thu Nov 11 17:51:37 2010 +1000
@@ -167,3 +167,27 @@
         display_driver->print_info(out);
     }
 }
+
+gboolean gl_check_error(const char *context)
+{
+    GLint err = glGetError();
+    if( err != 0 ) {
+        const char *s;
+        switch( err ) {
+        case GL_INVALID_ENUM: s = "Invalid enum"; break;
+        case GL_INVALID_VALUE: s = "Invalid value"; break;
+        case GL_INVALID_OPERATION: s = "Invalid operation"; break;
+        case GL_STACK_OVERFLOW: s = "Stack overflow"; break;
+        case GL_STACK_UNDERFLOW: s = "Stack underflow"; break;
+        case GL_OUT_OF_MEMORY:   s = "Out of memory"; break;
+        default: s = "Unknown error"; break;
+        }
+        if( context ) {
+            WARN( "%s: GL error: %x (%s)\n", context, err, s );
+        } else {
+            WARN( "GL error: %x (%s)\n", err, s );
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
--- a/src/pvr2/glutil.h	Wed Nov 10 08:37:42 2010 +1000
+++ b/src/pvr2/glutil.h	Thu Nov 11 17:51:37 2010 +1000
@@ -40,6 +40,12 @@
 void glPrintInfo( FILE *out );
 
 /**
+ * Check for a GL error and print a message if there is one
+ * @param context If not null, a string to be printed along side an error message
+ * @return TRUE if there was an error, otherwise FALSE
+ */
+gboolean gl_check_error( const char *context );
+/**
  * Test if secondary color (GL_COLOR_SUM) is supported.
  */
 gboolean isGLSecondaryColorSupported();