diff options
| author | Ian Romanick <ian.d.romanick@intel.com> | 2012-07-18 14:26:24 -0700 |
|---|---|---|
| committer | Ian Romanick <ian.d.romanick@intel.com> | 2012-08-06 15:37:04 -0700 |
| commit | 63adb6b9eaa723f6bf9603f3f567e04451df857e (patch) | |
| tree | e38014650a01a9fbfdb9e643bcfad581179aa05a /src | |
| parent | 102617bc5206e459bb1743d2d72341dbfe77bc58 (diff) | |
dri2: Fix bug in attribute handling for non-desktop OpenGL contexts
Previously an error would be generated if any attributes were specified when
creating a non-desktop OpenGL context. This was a mistake, and it will
prevent old drivers from working with new EGL libraries that add support for
the createContextAttribs interface. Instead, match the behavior of
EGL_KHR_create_context: allow versions that make sense, reject non-zero flags.
NOTE: This is a candidate for the 8.0 branch.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/common/dri_util.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c index f9b2a73b256..91ae186fe4b 100644 --- a/src/mesa/drivers/dri/common/dri_util.c +++ b/src/mesa/drivers/dri/common/dri_util.c @@ -197,12 +197,6 @@ dri2CreateContextAttribs(__DRIscreen *screen, int api, return NULL; } - if (mesa_api != API_OPENGL && num_attribs != 0) { - *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; - assert(!"Should not get here."); - return NULL; - } - for (unsigned i = 0; i < num_attribs; i++) { switch (attribs[i * 2]) { case __DRI_CTX_ATTRIB_MAJOR_VERSION: @@ -224,6 +218,23 @@ dri2CreateContextAttribs(__DRIscreen *screen, int api, } } + /* The EGL_KHR_create_context spec says: + * + * "Flags are only defined for OpenGL context creation, and specifying + * a flags value other than zero for other types of contexts, + * including OpenGL ES contexts, will generate an error." + * + * The GLX_EXT_create_context_es2_profile specification doesn't say + * anything specific about this case. However, none of the known flags + * have any meaning in an ES context, so this seems safe. + */ + if (mesa_api != __DRI_API_OPENGL + && mesa_api != __DRI_API_OPENGL_CORE + && flags != 0) { + *error = __DRI_CTX_ERROR_BAD_FLAG; + return NULL; + } + /* There are no forward-compatible contexts before OpenGL 3.0. The * GLX_ARB_create_context spec says: * |