[Mesa-dev] [PATCH] egl: reset 'ViewportInitialized' when unbinding current context

[Dongwon Kim]

'ViewportInitialized' flag in gl_context has to be reset to '0'
when the current context is unbound via a eglMakeCurrent call with
all of 'NULL' resources (surfaces and context).

This is to make sure the viewport of the context is re-initialized
when the same context is bound to new read and draw surfaces
(or same surfaces but with different size.) next time when the
context is made current again.

Signed-off-by: Dongwon Kim <dongwon.kim at intel.com>
---
 src/mesa/main/context.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 574c0fb..477e543 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1642,6 +1642,10 @@ _mesa_make_current( struct gl_context *newCtx,
    assert(_mesa_get_current_context() == newCtx);
 
    if (!newCtx) {
+      /* We reset ViewportInitialized for new bindings of surfaces to the
+       * same context in a new _mesa_make_current call.
+       */
+      curCtx->ViewportInitialized = GL_FALSE;
       _glapi_set_dispatch(NULL);  /* none current */
    }
    else {
-- 
2.7.4