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From 9d6e12eb6b06202519e48a7321f32944d7a34b0f Mon Sep 17 00:00:00 2001
From: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
Date: Sat, 24 May 2014 14:08:16 -0700
Subject: [PATCH 1003/1003] darwin: Guard Core Profile usage behind a testing
envvar
Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
(cherry picked from commit 04ce3be4010305902cc5ae81e8e0c8550d043a1e)
---
src/glx/apple/apple_visual.c | 30 ++++++++++++++++++++----------
1 file changed, 20 insertions(+), 10 deletions(-)
diff --git a/src/glx/apple/apple_visual.c b/src/glx/apple/apple_visual.c
index 951b213..046581b 100644
--- a/src/glx/apple/apple_visual.c
+++ b/src/glx/apple/apple_visual.c
@@ -82,16 +82,7 @@ apple_visual_create_pfobj(CGLPixelFormatObj * pfobj, const struct glx_config * m
int numattr = 0;
GLint vsref = 0;
CGLError error = 0;
-
- /* Request an OpenGL 3.2 profile if one is available and supported */
- attr[numattr++] = kCGLPFAOpenGLProfile;
- attr[numattr++] = kCGLOGLPVersion_3_2_Core;
-
- /* Test for kCGLPFAOpenGLProfile support at runtime and roll it out if not supported */
- attr[numattr] = 0;
- error = apple_cgl.choose_pixel_format(attr, pfobj, &vsref);
- if (error == kCGLBadAttribute)
- numattr -= 2;
+ bool use_core_profile = getenv("LIBGL_PROFILE_CORE");
if (offscreen) {
apple_glx_diagnostic
@@ -167,12 +158,31 @@ apple_visual_create_pfobj(CGLPixelFormatObj * pfobj, const struct glx_config * m
attr[numattr++] = mode->samples;
}
+ /* Debugging support for Core profiles to support newer versions of OpenGL */
+ if (use_core_profile) {
+ attr[numattr++] = kCGLPFAOpenGLProfile;
+ attr[numattr++] = kCGLOGLPVersion_3_2_Core;
+ }
+
attr[numattr++] = 0;
assert(numattr < MAX_ATTR);
error = apple_cgl.choose_pixel_format(attr, pfobj, &vsref);
+ if ((error == kCGLBadAttribute || vsref == 0) && use_core_profile) {
+ apple_glx_diagnostic
+ ("Trying again without CoreProfile: error=%s, vsref=%d\n", apple_cgl.error_string(error), vsref);
+
+ if (!error)
+ apple_cgl.destroy_pixel_format(*pfobj);
+
+ numattr -= 3;
+ attr[numattr++] = 0;
+
+ error = apple_cgl.choose_pixel_format(attr, pfobj, &vsref);
+ }
+
if (error) {
snprintf(__crashreporter_info_buff__, sizeof(__crashreporter_info_buff__),
"CGLChoosePixelFormat error: %s\n", apple_cgl.error_string(error));
--
1.9.2 (Apple Git-49)
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