OpenGL: enhance debug output

When running blender --debug-gpu

Display which debug facilities are available. One of these, in order of preference:
- OpenGL 4.3
- KHR_debug
- ARB_debug_output
- AMD_debug_output

All messages are logged now, not just errors. Will probably turn some of these off later.

GL_DEBUG_OUTPUT_SYNCHRONOUS lets us break on errors and backtrace to the exact trouble spot.

Callers of GPU_string_marker no longer pass in a message length, just the message itself (null terminated).

Apple provides no GL debug logging features.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/gpu/GPU_debug.h b/source/blender/gpu/GPU_debug.h
index 2c1728bfff1..ec0db43c38c 100644
--- a/source/blender/gpu/GPU_debug.h
+++ b/source/blender/gpu/GPU_debug.h
@@ -62,7 +62,7 @@ void GPU_assert_no_gl_errors(const char *file, int line, const char *str);
 
 
 /* inserts a debug marker message for the debug context messaging system */
-void GPU_string_marker(size_t size, const char *str);
+void GPU_string_marker(const char *str);
 
 #ifdef __cplusplus
 }