2 files changed, 24 insertions, 5 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c
index 934f7aa187..15f4bc6f69 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -830,7 +830,7 @@ intelDestroyContext(__DRIcontextPrivate * driContextPriv)
       _vbo_DestroyContext(&intel->ctx);
 
       _swrast_DestroyContext(&intel->ctx);
-      intel->Fallback = 0;      /* don't call _swrast_Flush later */
+      intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 
       intel_batchbuffer_free(intel->batch);
       intel->batch = NULL;
@@ -935,10 +935,23 @@ intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
                  __DRIdrawablePrivate * driReadPriv)
 {
    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
+   struct intel_context *intel;
+   GET_CURRENT_CONTEXT(curCtx);
+
+   if (driContextPriv)
+      intel = (struct intel_context *) driContextPriv->driverPrivate;
+   else
+      intel = NULL;
+
+   /* According to the glXMakeCurrent() man page: "Pending commands to
+    * the previous context, if any, are flushed before it is released."
+    * But only flush if we're actually changing contexts.
+    */
+   if (intel_context(curCtx) && intel_context(curCtx) != intel) {
+      _mesa_flush(curCtx);
+   }
 
    if (driContextPriv) {
-      struct intel_context *intel =
-         (struct intel_context *) driContextPriv->driverPrivate;
       struct intel_framebuffer *intel_fb =
 	 (struct intel_framebuffer *) driDrawPriv->driverPrivate;
       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
diff --git a/src/mesa/drivers/dri/intel/intel_context.h b/src/mesa/drivers/dri/intel/intel_context.h
index b104096912..2778cc0136 100644
--- a/src/mesa/drivers/dri/intel/intel_context.h
+++ b/src/mesa/drivers/dri/intel/intel_context.h
@@ -61,6 +61,10 @@ typedef void (*intel_line_func) (struct intel_context *, intelVertex *,
                                  intelVertex *);
 typedef void (*intel_point_func) (struct intel_context *, intelVertex *);
 
+/**
+ * Bits for intel->Fallback field
+ */
+/*@{*/
 #define INTEL_FALLBACK_DRAW_BUFFER	 0x1
 #define INTEL_FALLBACK_READ_BUFFER	 0x2
 #define INTEL_FALLBACK_DEPTH_BUFFER      0x4
@@ -68,8 +72,10 @@ typedef void (*intel_point_func) (struct intel_context *, intelVertex *);
 #define INTEL_FALLBACK_USER		 0x10
 #define INTEL_FALLBACK_RENDERMODE	 0x20
 #define INTEL_FALLBACK_TEXTURE   	 0x40
+#define INTEL_FALLBACK_DRIVER            0x1000  /**< first for drivers */
+/*@}*/
 
-extern void intelFallback(struct intel_context *intel, GLuint bit,
+extern void intelFallback(struct intel_context *intel, GLbitfield bit,
                           GLboolean mode);
 #define FALLBACK( intel, bit, mode ) intelFallback( intel, bit, mode )
 
@@ -171,7 +177,7 @@ struct intel_context
    struct dri_metaops meta;
 
    GLint refcount;
-   GLuint Fallback;
+   GLbitfield Fallback;  /**< mask of INTEL_FALLBACK_x bits */
    GLuint NewGLState;
 
    dri_bufmgr *bufmgr;