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dri3: Fix MakeCurrent without a default framebuffer 

In OpenGL 3.0 and later it is legal to make a context current without
a default framebuffer.

This has been broken since DRI3 support was introduced.

Cc: "13.0 12.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Fredrik Höglund 2017-01-01 15:34:17 +01:00
parent e16245b339
commit b6670157d7
1 changed files with 10 additions and 4 deletions
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14
src/glx/dri3_glx.c
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@ -209,18 +209,24 @@ dri3_bind_context(struct glx_context *context, struct glx_context *old,
struct dri3_context *pcp = (struct dri3_context *) context;
struct dri3_screen *psc = (struct dri3_screen *) pcp->base.psc;
struct dri3_drawable *pdraw, *pread;
__DRIdrawable *dri_draw = NULL, *dri_read = NULL;
pdraw = (struct dri3_drawable *) driFetchDrawable(context, draw);
pread = (struct dri3_drawable *) driFetchDrawable(context, read);
driReleaseDrawables(&pcp->base);
if (pdraw == NULL || pread == NULL)
if (pdraw)
dri_draw = pdraw->loader_drawable.dri_drawable;
else if (draw != None)
return GLXBadDrawable;
if (!(*psc->core->bindContext) (pcp->driContext,
pdraw->loader_drawable.dri_drawable,
pread->loader_drawable.dri_drawable))
if (pread)
dri_read = pread->loader_drawable.dri_drawable;
else if (read != None)
return GLXBadDrawable;
if (!(*psc->core->bindContext) (pcp->driContext, dri_draw, dri_read))
return GLXBadContext;
return Success;