dri: Drop the unused dummyContext

src/mesa/drivers/dri/common/dri_util.c

@@ -129,11 +129,6 @@ static int driUnbindContext(__DRIcontext *pcp)
      */
     pcp->driDrawablePriv = pcp->driReadablePriv = NULL;
 
-#if 0
-    /* Unbind the drawable */
-    pdp->driContextPriv = &psp->dummyContextPriv;
-#endif
-
     return GL_TRUE;
 }
 
@@ -433,7 +428,6 @@ driCreateNewDrawable(__DRIscreen *psp, const __DRIconfig *config,
     pdp->vblFlags = 0;
 
     pdp->driScreenPriv = psp;
-    pdp->driContextPriv = &psp->dummyContextPriv;
 
     if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, &config->modes,
 					renderType == GLX_PIXMAP_BIT)) {
@@ -567,17 +561,6 @@ driCreateNewContext(__DRIscreen *psp, const __DRIconfig *config,
     
     pcp->dri2.draw_stamp = 0;
     pcp->dri2.read_stamp = 0;
-    /* When the first context is created for a screen, initialize a "dummy"
-     * context.
-     */
-
-    if (!psp->dri2.enabled && !psp->dummyContextPriv.driScreenPriv) {
-        psp->dummyContextPriv.hHWContext = psp->pSAREA->dummy_context;
-        psp->dummyContextPriv.driScreenPriv = psp;
-        psp->dummyContextPriv.driDrawablePriv = NULL;
-        psp->dummyContextPriv.driverPrivate = NULL;
-	/* No other fields should be used! */
-    }
 
     pcp->hHWContext = hwContext;
 
@@ -734,13 +717,6 @@ driCreateNewScreen(int scrn,
     psp->myNum = scrn;
     psp->dri2.enabled = GL_FALSE;
 
-    /*
-    ** Do not init dummy context here; actual initialization will be
-    ** done when the first DRI context is created.  Init screen priv ptr
-    ** to NULL to let CreateContext routine that it needs to be inited.
-    */
-    psp->dummyContextPriv.driScreenPriv = NULL;
-
     psp->DriverAPI = driDriverAPI;
 
     *driver_modes = driDriverAPI.InitScreen(psp);

src/mesa/drivers/dri/common/dri_util.h

@@ -505,18 +505,6 @@ struct __DRIscreenRec {
     int devPrivSize;
     /*@}*/
 
-    /**
-     * Dummy context to which drawables are bound when not bound to any
-     * other context. 
-     *
-     * A dummy hHWContext is created for this context, and is used by the GL
-     * core when a hardware lock is required but the drawable is not currently
-     * bound (e.g., potentially during a SwapBuffers request).  The dummy
-     * context is created when the first "real" context is created on this
-     * screen.
-     */
-    __DRIcontext dummyContextPriv;
-
     /**
      * Device-dependent private information (not stored in the SAREA).
      *