Merge branch 'mesa_7_6_branch' into mesa_7_7_branch

Conflicts:
	src/gallium/auxiliary/util/u_network.c
	src/gallium/auxiliary/util/u_network.h
	src/gallium/drivers/i915/i915_state.c
	src/gallium/drivers/trace/tr_rbug.c
	src/gallium/state_trackers/vega/bezier.c
	src/gallium/state_trackers/vega/vg_context.c
	src/gallium/state_trackers/xorg/xorg_crtc.c
	src/gallium/state_trackers/xorg/xorg_driver.c
	src/gallium/winsys/xlib/xlib_brw_context.c
	src/mesa/main/mtypes.h

18 files changed, 251 insertions, 21 deletions

diff --git a/src/gallium/auxiliary/rbug/rbug_context.h b/src/gallium/auxiliary/rbug/rbug_context.h
index da61c2365b0..03126d6b123 100644
--- a/src/gallium/auxiliary/rbug/rbug_context.h
+++ b/src/gallium/auxiliary/rbug/rbug_context.h
@@ -46,7 +46,7 @@ typedef enum
 	RBUG_BLOCK_BEFORE = 1,
 	RBUG_BLOCK_AFTER = 2,
 	RBUG_BLOCK_RULE = 4,
-	RBUG_BLOCK_MASK = 7,
+	RBUG_BLOCK_MASK = 7
 } rbug_block_t;
 
 struct rbug_proto_context_list
diff --git a/src/gallium/auxiliary/rbug/rbug_proto.h b/src/gallium/auxiliary/rbug/rbug_proto.h
index d273be0166d..4f3eb75dc4d 100644
--- a/src/gallium/auxiliary/rbug/rbug_proto.h
+++ b/src/gallium/auxiliary/rbug/rbug_proto.h
@@ -65,7 +65,7 @@ enum rbug_opcode
 	RBUG_OP_SHADER_DISABLE = 770,
 	RBUG_OP_SHADER_REPLACE = 771,
 	RBUG_OP_SHADER_LIST_REPLY = -768,
-	RBUG_OP_SHADER_INFO_REPLY = -769,
+	RBUG_OP_SHADER_INFO_REPLY = -769
 };
 
 /**
diff --git a/src/gallium/auxiliary/util/u_clear.h b/src/gallium/auxiliary/util/u_clear.h
index 1e65a035aed..6be5ca2297d 100644
--- a/src/gallium/auxiliary/util/u_clear.h
+++ b/src/gallium/auxiliary/util/u_clear.h
@@ -46,7 +46,7 @@ util_clear(struct pipe_context *pipe,
 {
    if (buffers & PIPE_CLEAR_COLOR) {
       struct pipe_surface *ps = framebuffer->cbufs[0];
-      unsigned color;
+      unsigned color = 0;
 
       util_pack_color(rgba, ps->format, &color);
       if (pipe->surface_fill) {
diff --git a/src/gallium/auxiliary/util/u_debug.c b/src/gallium/auxiliary/util/u_debug.c
index 96d400c839b..be5eb87e474 100644
--- a/src/gallium/auxiliary/util/u_debug.c
+++ b/src/gallium/auxiliary/util/u_debug.c
@@ -452,7 +452,8 @@ debug_dump_flags(const struct debug_named_value *names,
 	    util_strncat(output, "|", sizeof(output));
 	 else
 	    first = 0;
-	 util_strncat(output, names->name, sizeof(output));
+	 util_strncat(output, names->name, sizeof(output) - 1);
+	 output[sizeof(output) - 1] = '\0';
 	 value &= ~names->value;
       }
       ++names;
@@ -465,7 +466,8 @@ debug_dump_flags(const struct debug_named_value *names,
 	 first = 0;
       
       util_snprintf(rest, sizeof(rest), "0x%08lx", value);
-      util_strncat(output, rest, sizeof(output));
+      util_strncat(output, rest, sizeof(output) - 1);
+      output[sizeof(output) - 1] = '\0';
    }
    
    if(first)
diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h
index 7b5b7fcda5b..bd27f346924 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -79,7 +79,7 @@ enum util_format_colorspace {
    UTIL_FORMAT_COLORSPACE_RGB = 0,
    UTIL_FORMAT_COLORSPACE_SRGB = 1,
    UTIL_FORMAT_COLORSPACE_YUV = 2,
-   UTIL_FORMAT_COLORSPACE_ZS = 3,
+   UTIL_FORMAT_COLORSPACE_ZS = 3
 };
 
 
diff --git a/src/gallium/auxiliary/util/u_network.c b/src/gallium/auxiliary/util/u_network.c
index 6269c72e121..9eb8f309cd1 100644
--- a/src/gallium/auxiliary/util/u_network.c
+++ b/src/gallium/auxiliary/util/u_network.c
@@ -6,7 +6,7 @@
 #if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
 #  include <winsock2.h>
 #  include <windows.h>
-#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_BSD)
+#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE)
 #  include <sys/socket.h>
 #  include <netinet/in.h>
 #  include <unistd.h>
@@ -54,7 +54,7 @@ u_socket_close(int s)
    if (s < 0)
       return;
 
-#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_BSD)
+#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE)
    shutdown(s, SHUT_RDWR);
    close(s);
 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
@@ -169,7 +169,7 @@ u_socket_listen_on_port(uint16_t portnum)
 void
 u_socket_block(int s, boolean block)
 {
-#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_BSD)
+#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE)
    int old = fcntl(s, F_GETFL, 0);
    if (old == -1)
       return;
diff --git a/src/gallium/auxiliary/util/u_network.h b/src/gallium/auxiliary/util/u_network.h
index 0aa898b9676..187dcab86e7 100644
--- a/src/gallium/auxiliary/util/u_network.h
+++ b/src/gallium/auxiliary/util/u_network.h
@@ -6,7 +6,7 @@
 
 #if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
 #  define PIPE_HAVE_SOCKETS
-#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_BSD)
+#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE)
 #  define PIPE_HAVE_SOCKETS
 #endif
 
diff --git a/src/gallium/auxiliary/util/u_stream_stdc.c b/src/gallium/auxiliary/util/u_stream_stdc.c
index 5cd05b29047..4d976d6dca4 100644
--- a/src/gallium/auxiliary/util/u_stream_stdc.c
+++ b/src/gallium/auxiliary/util/u_stream_stdc.c
@@ -32,7 +32,7 @@
 
 #include "pipe/p_config.h"
 
-#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_HAIKU)
+#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE)
 
 #include <stdio.h>
 
diff --git a/src/gallium/drivers/i915/i915_state.c b/src/gallium/drivers/i915/i915_state.c
index 71f00bc346a..a04668d32fa 100644
--- a/src/gallium/drivers/i915/i915_state.c
+++ b/src/gallium/drivers/i915/i915_state.c
@@ -58,10 +58,10 @@ translate_wrap_mode(unsigned wrap)
       return TEXCOORDMODE_CLAMP_EDGE;
    case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
       return TEXCOORDMODE_CLAMP_BORDER;
-/*
+   /*         
    case PIPE_TEX_WRAP_MIRRORED_REPEAT:
       return TEXCOORDMODE_MIRROR;
-*/
+    */
    default:
       return TEXCOORDMODE_WRAP;
    }
diff --git a/src/gallium/drivers/trace/tr_dump.c b/src/gallium/drivers/trace/tr_dump.c
index 7e2ccbcfdc5..0f45e211a32 100644
--- a/src/gallium/drivers/trace/tr_dump.c
+++ b/src/gallium/drivers/trace/tr_dump.c
@@ -40,7 +40,7 @@
 
 #include "pipe/p_config.h"
 
-#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_OS_SOLARIS)
+#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_APPLE)
 #include <stdlib.h>
 #endif
 
@@ -258,7 +258,7 @@ boolean trace_dump_trace_begin()
       trace_dump_writes("<?xml-stylesheet type='text/xsl' href='trace.xsl'?>\n");
       trace_dump_writes("<trace version='0.1'>\n");
 
-#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_OS_SOLARIS)
+#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_APPLE)
       /* Linux applications rarely cleanup GL / Gallium resources so catch
        * application exit here */
       atexit(trace_dump_trace_close);
diff --git a/src/gallium/drivers/trace/tr_rbug.c b/src/gallium/drivers/trace/tr_rbug.c
index 81e0a6f3b00..0372d92782b 100644
--- a/src/gallium/drivers/trace/tr_rbug.c
+++ b/src/gallium/drivers/trace/tr_rbug.c
@@ -44,7 +44,7 @@
 
 #if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
 #  define sleep Sleep
-#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD)
+#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_APPLE)
 void usleep(int);
 #  define sleep usleep
 #else
@@ -179,7 +179,7 @@ static int
 trace_rbug_texture_info(struct trace_rbug *tr_rbug, struct rbug_header *header, uint32_t serial)
 {
    struct trace_screen *tr_scr = tr_rbug->tr_scr;
-   struct trace_texture *tr_tex;
+   struct trace_texture *tr_tex = NULL;
    struct rbug_proto_texture_info *gpti = (struct rbug_proto_texture_info *)header;
    struct tr_list *ptr;
    struct pipe_texture *t;
@@ -220,7 +220,7 @@ trace_rbug_texture_read(struct trace_rbug *tr_rbug, struct rbug_header *header,
    struct rbug_proto_texture_read *gptr = (struct rbug_proto_texture_read *)header;
 
    struct trace_screen *tr_scr = tr_rbug->tr_scr;
-   struct trace_texture *tr_tex;
+   struct trace_texture *tr_tex = NULL;
    struct tr_list *ptr;
 
    struct pipe_screen *screen = tr_scr->screen;
diff --git a/src/gallium/state_trackers/egl/egl_surface.c b/src/gallium/state_trackers/egl/egl_surface.c
index 91615abebee..61b7f986831 100644
--- a/src/gallium/state_trackers/egl/egl_surface.c
+++ b/src/gallium/state_trackers/egl/egl_surface.c
@@ -171,9 +171,9 @@ drm_takedown_shown_screen(_EGLDisplay *dpy, struct drm_screen *screen)
 	drmModeSetCrtc(
 		dev->drmFD,
 		screen->crtcID,
-		0, // FD
+		0, /* FD */
 		0, 0,
-		NULL, 0, // List of output ids
+		NULL, 0, /* List of output ids */
 		NULL);
 
 	drmModeRmFB(dev->drmFD, screen->fbID);
diff --git a/src/gallium/state_trackers/vega/arc.c b/src/gallium/state_trackers/vega/arc.c
index 8b04d21ea76..db26e010a05 100644
--- a/src/gallium/state_trackers/vega/arc.c
+++ b/src/gallium/state_trackers/vega/arc.c
@@ -538,6 +538,7 @@ static INLINE int num_beziers_needed(struct arc *arc)
       double d_eta = (max_eta - min_eta) / n;
       if (d_eta <= 0.5 * M_PI) {
          double eta_b = min_eta;
+         int i;
          found = VG_TRUE;
          for (i = 0; found && (i < n); ++i) {
             double etaA = eta_b;
@@ -561,6 +562,7 @@ static void arc_to_beziers(struct arc *arc,
       sin_eta_b, a_cos_eta_b, b_sin_eta_b, a_sin_eta_b,
       b_cos_eta_b, x_b, y_b, x_b_dot, y_b_dot, lx, ly;
    double t, alpha;
+   int i;
 
    { /* always move to the start of the arc */
       VGfloat x = arc->x1;
diff --git a/src/gallium/state_trackers/vega/bezier.c b/src/gallium/state_trackers/vega/bezier.c
index 0d5504004cc..5fc17fbb72d 100644
--- a/src/gallium/state_trackers/vega/bezier.c
+++ b/src/gallium/state_trackers/vega/bezier.c
@@ -256,7 +256,6 @@ static enum shift_result good_offset(const struct bezier *b1,
    const float max_dist_normal = threshold*offset;
    const float spacing = 0.25;
    float i;
-
    for (i = spacing; i < 0.99; i += spacing) {
       float p1[2],p2[2], d, l;
       float normal[2];
@@ -344,6 +343,8 @@ static enum shift_result shift(const struct bezier *orig,
    float points_shifted[4][2];
    float prev_normal[2];
 
+   int i;
+
    points[np][0] = orig->x1;
    points[np][1] = orig->y1;
    map[0] = 0;
diff --git a/src/gallium/state_trackers/vega/vg_context.c b/src/gallium/state_trackers/vega/vg_context.c
index 00d23f5c227..571e6b67d13 100644
--- a/src/gallium/state_trackers/vega/vg_context.c
+++ b/src/gallium/state_trackers/vega/vg_context.c
@@ -232,7 +232,10 @@ static void update_clip_state(struct vg_context *ctx)
       struct pipe_blend_state *blend = &ctx->state.g3d.blend;
       struct pipe_framebuffer_state *fb = &ctx->state.g3d.fb;
       int i;
+<<<<<<< HEAD:src/gallium/state_trackers/vega/vg_context.c
 
+=======
+>>>>>>> mesa_7_6_branch:src/gallium/state_trackers/vega/vg_context.c
       dsa->depth.writemask = 1;/*glDepthMask(TRUE);*/
       dsa->depth.func = PIPE_FUNC_ALWAYS;
       dsa->depth.enabled = 1;
diff --git a/src/gallium/state_trackers/xorg/xorg_crtc.c b/src/gallium/state_trackers/xorg/xorg_crtc.c
index 337449a7451..68ddeae470f 100644
--- a/src/gallium/state_trackers/xorg/xorg_crtc.c
+++ b/src/gallium/state_trackers/xorg/xorg_crtc.c
@@ -70,6 +70,8 @@ struct crtc_private
 static void
 crtc_dpms(xf86CrtcPtr crtc, int mode)
 {
+    /* ScrnInfoPtr pScrn = crtc->scrn; */
+
     switch (mode) {
     case DPMSModeOn:
     case DPMSModeStandby:
@@ -146,18 +148,23 @@ crtc_gamma_set(xf86CrtcPtr crtc, CARD16 * red, CARD16 * green, CARD16 * blue,
 static void *
 crtc_shadow_allocate(xf86CrtcPtr crtc, int width, int height)
 {
+    /* ScrnInfoPtr pScrn = crtc->scrn; */
+
     return NULL;
 }
 
 static PixmapPtr
 crtc_shadow_create(xf86CrtcPtr crtc, void *data, int width, int height)
 {
+    /* ScrnInfoPtr pScrn = crtc->scrn; */
+
     return NULL;
 }
 
 static void
 crtc_shadow_destroy(xf86CrtcPtr crtc, PixmapPtr rotate_pixmap, void *data)
 {
+    /* ScrnInfoPtr pScrn = crtc->scrn; */
 }
 
 /*
diff --git a/src/gallium/state_trackers/xorg/xorg_driver.c b/src/gallium/state_trackers/xorg/xorg_driver.c
index 8a24aa10a3c..bf0a23fe9c2 100644
--- a/src/gallium/state_trackers/xorg/xorg_driver.c
+++ b/src/gallium/state_trackers/xorg/xorg_driver.c
@@ -220,6 +220,12 @@ static Bool
 drv_init_resource_management(ScrnInfoPtr pScrn)
 {
     modesettingPtr ms = modesettingPTR(pScrn);
+    /*
+    ScreenPtr pScreen = pScrn->pScreen;
+    PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
+    Bool fbAccessDisabled;
+    CARD8 *fbstart;
+     */
 
     if (ms->screen || ms->kms)
 	return TRUE;
diff --git a/src/gallium/winsys/xlib/xlib_brw_context.c b/src/gallium/winsys/xlib/xlib_brw_context.c
new file mode 100644
index 00000000000..fc9addd09e3
--- /dev/null
+++ b/src/gallium/winsys/xlib/xlib_brw_context.c
@@ -0,0 +1,209 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * 
+ **************************************************************************/
+
+/*
+ * Authors:
+ *   Keith Whitwell
+ *   Brian Paul
+ */
+
+
+/* #include "glxheader.h" */
+/* #include "xmesaP.h" */
+
+#include "pipe/internal/p_winsys_screen.h"
+#include "pipe/p_inlines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "i965simple/brw_winsys.h"
+#include "xlib_brw_aub.h"
+#include "xlib_brw.h"
+
+
+
+
+#define XBCWS_BATCHBUFFER_SIZE 1024
+
+
+/* The backend to the brw driver (ie struct brw_winsys) is actually a
+ * per-context entity.
+ */
+struct xlib_brw_context_winsys {
+   struct brw_winsys brw_context_winsys;   /**< batch buffer funcs */
+   struct aub_context *aub;
+                         
+   struct pipe_winsys *pipe_winsys;
+
+   unsigned batch_data[XBCWS_BATCHBUFFER_SIZE];
+   unsigned batch_nr;
+   unsigned batch_size;
+   unsigned batch_alloc;
+};
+
+
+/* Turn a brw_winsys into an xlib_brw_context_winsys:
+ */
+static inline struct xlib_brw_context_winsys *
+xlib_brw_context_winsys( struct brw_winsys *sws )
+{
+   return (struct xlib_brw_context_winsys *)sws;
+}
+
+
+/* Simple batchbuffer interface:
+ */
+
+static unsigned *xbcws_batch_start( struct brw_winsys *sws,
+					 unsigned dwords,
+					 unsigned relocs )
+{
+   struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
+
+   if (xbcws->batch_size < xbcws->batch_nr + dwords)
+      return NULL;
+
+   xbcws->batch_alloc = xbcws->batch_nr + dwords;
+   return (void *)1;			/* not a valid pointer! */
+}
+
+static void xbcws_batch_dword( struct brw_winsys *sws,
+				    unsigned dword )
+{
+   struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
+
+   assert(xbcws->batch_nr < xbcws->batch_alloc);
+   xbcws->batch_data[xbcws->batch_nr++] = dword;
+}
+
+static void xbcws_batch_reloc( struct brw_winsys *sws,
+			     struct pipe_buffer *buf,
+			     unsigned access_flags,
+			     unsigned delta )
+{
+   struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
+
+   assert(xbcws->batch_nr < xbcws->batch_alloc);
+   xbcws->batch_data[xbcws->batch_nr++] = 
+      ( xlib_brw_get_buffer_offset( NULL, buf, access_flags ) +
+        delta );
+}
+
+static void xbcws_batch_end( struct brw_winsys *sws )
+{
+   struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
+
+   assert(xbcws->batch_nr <= xbcws->batch_alloc);
+   xbcws->batch_alloc = 0;
+}
+
+static void xbcws_batch_flush( struct brw_winsys *sws,
+				    struct pipe_fence_handle **fence )
+{
+   struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
+   assert(xbcws->batch_nr <= xbcws->batch_size);
+
+   if (xbcws->batch_nr) {
+      xlib_brw_commands_aub( xbcws->pipe_winsys,
+                             xbcws->batch_data,
+                             xbcws->batch_nr );
+   }
+
+   xbcws->batch_nr = 0;
+}
+
+  
+
+/* Really a per-device function, just pass through:
+ */
+static unsigned xbcws_get_buffer_offset( struct brw_winsys *sws,
+                                         struct pipe_buffer *buf,
+                                         unsigned access_flags )
+{
+   struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
+
+   return xlib_brw_get_buffer_offset( xbcws->pipe_winsys,
+                                      buf,
+                                      access_flags );
+}
+
+
+/* Really a per-device function, just pass through:
+ */
+static void xbcws_buffer_subdata_typed( struct brw_winsys *sws,
+                                       struct pipe_buffer *buf,
+                                       unsigned long offset, 
+                                       unsigned long size, 
+                                       const void *data,
+                                       unsigned data_type )
+{
+   struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
+
+   xlib_brw_buffer_subdata_typed( xbcws->pipe_winsys,
+                                  buf,
+                                  offset,
+                                  size,
+                                  data,
+                                  data_type );
+}
+
+
+/**
+ * Create i965 hardware rendering context, but plugged into a
+ * dump-to-aubfile backend.
+ */
+struct pipe_context *
+xlib_create_brw_context( struct pipe_screen *screen,
+                         void *unused )
+{
+   struct xlib_brw_context_winsys *xbcws = CALLOC_STRUCT( xlib_brw_context_winsys );
+   
+   /* Fill in this struct with callbacks that i965simple will need to
+    * communicate with the window system, buffer manager, etc. 
+    */
+   xbcws->brw_context_winsys.batch_start = xbcws_batch_start;
+   xbcws->brw_context_winsys.batch_dword = xbcws_batch_dword;
+   xbcws->brw_context_winsys.batch_reloc = xbcws_batch_reloc;
+   xbcws->brw_context_winsys.batch_end = xbcws_batch_end;
+   xbcws->brw_context_winsys.batch_flush = xbcws_batch_flush;
+   xbcws->brw_context_winsys.buffer_subdata_typed = xbcws_buffer_subdata_typed;
+   xbcws->brw_context_winsys.get_buffer_offset = xbcws_get_buffer_offset;
+
+   xbcws->pipe_winsys = screen->winsys; /* redundant */
+
+   xbcws->batch_size = XBCWS_BATCHBUFFER_SIZE;
+
+   /* Create the i965simple context:
+    */
+#ifdef GALLIUM_CELL
+   return NULL;
+#else
+   return brw_create( screen,
+		      &xbcws->brw_context_winsys,
+		      0 );
+#endif
+}