http://bugs.freedesktop.org/show_bug.cgi?id=13800
Summary: [FBO] default bound framebuffer returned by glGet should
be 0
Product: Mesa
Version: unspecified
Platform: Other
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Mesa core
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
System Environment:
--------------------------
--Mesa:e54329233522591bbe8aad8a3fd6bcdc1e430f03
Bug detailed description:
--------------------------
according to OpenGL spec:
" In the initial state, the reserved name zero is bound to the target
FRAMEBUFFER_EXT. There is no application-created framebuffer object
corresponding to the name zero. Instead, the name zero refers to
the window-system-provided framebuffer."
when there's no application-created framebuffer object bound,
GetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &fb_binding) should return 0, as
default framebuffer should be window-system-provided framebuffer
Reproduce steps:
----------------
start X
compile and run the attached test case
Current result:
----------------
GetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &fb_binding) does not return 0
Expected result:
----------------
GetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &fb_binding) should return 0
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