https://bugs.freedesktop.org/show_bug.cgi?id=92869
Bug ID: 92869
Summary: OpenGL ES 3.0 context creation failure
Product: Mesa
Version: 11.0
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: GLX
Assignee: mesa-dev@lists.freedesktop.org
Reporter: gustaf.ullb...@gmail.com
QA Contact: mesa-dev@lists.freedesktop.org
I am trying to create an OpenGL ES 3.0 context using GLX. But, when trying to
create an OpenGL ES context with glXCreateContextAttribsARB the call fails if I
request any version other that 2.0.
I think this part of the mesa code is responsible (src/glx/dri_common.c):
/* The GLX_EXT_create_context_es2_profile spec says:
*
* "... If the version requested is 2.0, and the
* GLX_CONTEXT_ES2_PROFILE_BIT_EXT bit is set in the
* GLX_CONTEXT_PROFILE_MASK_ARB attribute (see below), then the context
* returned will implement OpenGL ES 2.0. This is the only way in which
* an implementation may request an OpenGL ES 2.0 context."
*/
if (*api == __DRI_API_GLES2 && (*major_ver != 2 || *minor_ver != 0)) {
*error = __DRI_CTX_ERROR_BAD_API;
return false;
}
The code quotes the GLX_EXT_create_context_es2_profile spec but that quote is
NOT in the spec (maybe it has been in the past).
The mentioned spec however says that:
... If the version requested is a valid and supported OpenGL-ES version,
and the GLX_CONTEXT_ES_PROFILE_BIT_EXT bit is set in the
GLX_CONTEXT_PROFILE_MASK_ARB attribute (see below), then the context
returned will implement the OpenGL ES version requested.
I interpret this as "If OpenGL ES 3.0 is requested and supported, a context of
version 3.0 is returned". Since OpenGL ES 3.0 is supported, I expect a call
requesting that version to succeed.
Please tell if you want me to provide more information.
Best regards,
Gustaf
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