[Mesa-stable] [PATCH] mesa: set _NEW_BUFFERS when updating texture bound to current buffers

[Ilia Mirkin]

When a glTexImage call updates the parameters of a currently bound
framebuffer, we might miss out on revalidating whether it is complete.
Make sure to set _NEW_BUFFERS which will trigger the revalidation in
that case.

Also while we're at it, fix the fb parameter passed in to the eventual
RenderTexture call.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94148
Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Cc: "11.2 12.0" <mesa-stable at lists.freedesktop.org>
---
 src/mesa/main/teximage.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 26a6c21..a97815f 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -2605,10 +2605,16 @@ check_rtt_cb(GLuint key, void *data, void *userData)
              att->Texture == texObj &&
              att->TextureLevel == level &&
              att->CubeMapFace == face) {
-            _mesa_update_texture_renderbuffer(ctx, ctx->DrawBuffer, att);
+            _mesa_update_texture_renderbuffer(ctx, fb, att);
             assert(att->Renderbuffer->TexImage);
             /* Mark fb status as indeterminate to force re-validation */
             fb->_Status = 0;
+
+            /* Make sure that the revalidation actually happens if this is
+             * being done to currently-bound buffers.
+             */
+            if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer)
+               ctx->NewState |= _NEW_BUFFERS;
          }
       }
    }
-- 
2.7.3