From 0800342296fb9eeb6bac8f24965441dff0e71812 Mon Sep 17 00:00:00 2001
From: Brian <brian.paul@tungstengraphics.com>
Date: Tue, 6 Nov 2007 10:05:01 -0700
Subject: [PATCH] Remove last of core Mesa dependencies in intel_swapbuffers.c

Use the "dummyContext" pointer (for now) instead of GET_CURRENT_CONTEXT().
---
 src/mesa/drivers/dri/intel_winsys/intel_context.c  | 10 +++--
 src/mesa/drivers/dri/intel_winsys/intel_screen.h   |  6 ++-
 .../drivers/dri/intel_winsys/intel_swapbuffers.c   | 45 +++-------------------
 3 files changed, 17 insertions(+), 44 deletions(-)

diff --git a/src/mesa/drivers/dri/intel_winsys/intel_context.c b/src/mesa/drivers/dri/intel_winsys/intel_context.c
index 85ccb1b..ed64486 100644
--- a/src/mesa/drivers/dri/intel_winsys/intel_context.c
+++ b/src/mesa/drivers/dri/intel_winsys/intel_context.c
@@ -181,6 +181,9 @@ intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 	 intel->first_swap_fence = NULL;
       }
 
+      if (intel->intelScreen->dummyContext == intel)
+         intel->intelScreen->dummyContext = NULL;
+
       st_destroy_context(intel->st);
       free(intel);
    }
@@ -210,9 +213,10 @@ intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
       assert(draw_fb->stfb);
       assert(read_fb->stfb);
 
-      /* this is a hack so we have a valid context when the region allocation
-         is done. Need a per-screen context? */
-      intel->intelScreen->dummyctxptr = intel;
+      /* This is for situations in which we need a rendering context but
+       * there may not be any currently bound.
+       */
+      intel->intelScreen->dummyContext = intel;
 
       st_make_current(intel->st, draw_fb->stfb, read_fb->stfb);
 
diff --git a/src/mesa/drivers/dri/intel_winsys/intel_screen.h b/src/mesa/drivers/dri/intel_winsys/intel_screen.h
index 1d24ff7..3bcbc22 100644
--- a/src/mesa/drivers/dri/intel_winsys/intel_screen.h
+++ b/src/mesa/drivers/dri/intel_winsys/intel_screen.h
@@ -69,7 +69,11 @@ struct intel_screen
    struct _DriBufferPool *staticPool; /** for the X screen/framebuffer */
    boolean havePools;
 
-   struct intel_context *dummyctxptr;
+   /**
+    * Temporary(?) context to use for SwapBuffers or other situations in
+    * which we need a rendering context, but none is currently bound.
+    */
+   struct intel_context *dummyContext;
 };
 
 
diff --git a/src/mesa/drivers/dri/intel_winsys/intel_swapbuffers.c b/src/mesa/drivers/dri/intel_winsys/intel_swapbuffers.c
index 8e0f111..9fcb2da 100644
--- a/src/mesa/drivers/dri/intel_winsys/intel_swapbuffers.c
+++ b/src/mesa/drivers/dri/intel_winsys/intel_swapbuffers.c
@@ -31,7 +31,6 @@
 #include "intel_batchbuffer.h"
 #include "intel_reg.h"
 #include "intel_winsys.h"
-#include "context.h"
 
 #include "pipe/p_context.h"
 #include "state_tracker/st_public.h"
@@ -39,39 +38,6 @@
 #include "state_tracker/st_cb_fbo.h"
 
 
-
-/** Cast wrapper */
-static INLINE struct intel_context *
-intel_context_mesa(GLcontext * ctx)
-{
-   return (struct intel_context *) ctx->DriverCtx;
-}
-
-
-/** XXX temporary - want to get rid of this */
-static struct intel_context *
-intelScreenContext(struct intel_screen *intelScreen)
-{
-  /*
-   * This should probably change to have the screen allocate a dummy
-   * context at screen creation. For now just use the current context.
-   */
-
-  GET_CURRENT_CONTEXT(ctx);
-  if (ctx == NULL) {
-     /* need a context for the first time makecurrent is called (for hw lock
-        when allocating priv buffers) */
-     if (intelScreen->dummyctxptr == NULL) {
-        _mesa_problem(NULL, "No current context in intelScreenContext\n");
-        return NULL;
-     }
-     return intelScreen->dummyctxptr;
-  }
-
-  return intel_context_mesa(ctx);
-}
-
-
 /**
  * Display a colorbuffer surface in an X window.
  * Used for SwapBuffers and flushing front buffer rendering.
@@ -86,18 +52,17 @@ intelDisplaySurface(__DRIdrawablePrivate *dPriv,
                     const drm_clip_rect_t *rect)
 {
    struct intel_screen *intelScreen = intel_screen(dPriv->driScreenPriv);
-   struct intel_context *intel;
+   struct intel_context *intel = intelScreen->dummyContext;
 
    DBG(SWAP, "%s\n", __FUNCTION__);
 
-   assert(dPriv);
-
-   intel = intelScreenContext(intelScreen);
-   if (!intel)
+   if (!intel) {
+      /* XXX this is where some kind of extra/meta context could be useful */
       return;
+   }
 
    if (intel->last_swap_fence) {
-      driFenceFinish(intel->last_swap_fence, DRM_FENCE_TYPE_EXE, GL_TRUE);
+      driFenceFinish(intel->last_swap_fence, DRM_FENCE_TYPE_EXE, TRUE);
       driFenceUnReference(intel->last_swap_fence);
       intel->last_swap_fence = NULL;
    }
-- 
2.7.4