Merge remote branch 'upstream/gallium-0.1' into nouveau-gallium-0.1

1 files changed, 151 insertions, 180 deletions

diff --git a/src/gallium/winsys/xlib/xm_winsys.c b/src/gallium/winsys/xlib/xm_winsys.c
index 8a89278cde..14c3892559 100644
--- a/src/gallium/winsys/xlib/xm_winsys.c
+++ b/src/gallium/winsys/xlib/xm_winsys.c
@@ -37,6 +37,7 @@
 #include "xmesaP.h"
 
 #undef ASSERT
+#undef Elements
 
 #include "pipe/p_winsys.h"
 #include "pipe/p_format.h"
@@ -57,6 +58,7 @@
 
 
 /**
+ * Subclass of pipe_buffer for Xlib winsys.
  * Low-level OS/window system memory buffer
  */
 struct xm_buffer
@@ -73,12 +75,10 @@ struct xm_buffer
 #endif
 };
 
-#if defined(USE_XSHM) && !defined(XFree86Server)
-# define XSHM_ENABLED(b) ((b)->shm)
-#else
-# define XSHM_ENABLED(b) 0
-#endif
 
+/**
+ * Subclass of pipe_surface for Xlib winsys
+ */
 struct xmesa_surface
 {
    struct pipe_surface surface;
@@ -89,17 +89,8 @@ struct xmesa_surface
 
 
 /**
- * Derived from softpipe_winsys.
- * We just need one extra field which indicates the pixel format to use for
- * drawing surfaces so that we're compatible with the XVisual/window format.
+ * Subclass of pipe_winsys for Xlib winsys
  */
-struct xmesa_softpipe_winsys
-{
-   struct softpipe_winsys spws;
-   enum pipe_format pixelformat;
-};
-
-
 struct xmesa_pipe_winsys
 {
    struct pipe_winsys base;
@@ -108,35 +99,147 @@ struct xmesa_pipe_winsys
 };
 
 
-static void alloc_shm_ximage(struct xm_buffer *b, struct xmesa_buffer *xmb,
-    unsigned width, unsigned height);
 
 /** Cast wrapper */
 static INLINE struct xmesa_surface *
 xmesa_surface(struct pipe_surface *ps)
 {
-//   assert(0);
    return (struct xmesa_surface *) ps;
 }
 
-/** cast wrapper */
-static INLINE struct xmesa_softpipe_winsys *
-xmesa_softpipe_winsys(struct softpipe_winsys *spws)
+
+/** Cast wrapper */
+static INLINE struct xm_buffer *
+xm_buffer( struct pipe_buffer *buf )
 {
-   return (struct xmesa_softpipe_winsys *) spws;
+   return (struct xm_buffer *)buf;
 }
 
+
 /**
- * Turn the softpipe opaque buffer pointer into a dri_bufmgr opaque
- * buffer pointer...
+ * X Shared Memory Image extension code
  */
-static INLINE struct xm_buffer *
-xm_buffer( struct pipe_buffer *buf )
+#if defined(USE_XSHM) && !defined(XFree86Server)
+
+#define XSHM_ENABLED(b) ((b)->shm)
+
+static volatile int mesaXErrorFlag = 0;
+
+/**
+ * Catches potential Xlib errors.
+ */
+static int
+mesaHandleXError(XMesaDisplay *dpy, XErrorEvent *event)
 {
-   return (struct xm_buffer *)buf;
+   (void) dpy;
+   (void) event;
+   mesaXErrorFlag = 1;
+   return 0;
 }
 
 
+static GLboolean alloc_shm(struct xm_buffer *buf, unsigned size)
+{
+   XShmSegmentInfo *const shminfo = & buf->shminfo;
+
+   shminfo->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT|0777);
+   if (shminfo->shmid < 0) {
+      return GL_FALSE;
+   }
+
+   shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
+   if (shminfo->shmaddr == (char *) -1) {
+      shmctl(shminfo->shmid, IPC_RMID, 0);
+      return GL_FALSE;
+   }
+
+   shminfo->readOnly = False;
+   return GL_TRUE;
+}
+
+
+/**
+ * Allocate a shared memory XImage back buffer for the given XMesaBuffer.
+ */
+static void
+alloc_shm_ximage(struct xm_buffer *b, struct xmesa_buffer *xmb,
+                 unsigned width, unsigned height)
+{
+   /*
+    * We have to do a _lot_ of error checking here to be sure we can
+    * really use the XSHM extension.  It seems different servers trigger
+    * errors at different points if the extension won't work.  Therefore
+    * we have to be very careful...
+    */
+#if 0
+   GC gc;
+#endif
+   int (*old_handler)(XMesaDisplay *, XErrorEvent *);
+
+   b->tempImage = XShmCreateImage(xmb->xm_visual->display,
+                                  xmb->xm_visual->visinfo->visual,
+                                  xmb->xm_visual->visinfo->depth,
+                                  ZPixmap,
+                                  NULL,
+                                  &b->shminfo,
+                                  width, height);
+   if (b->tempImage == NULL) {
+      b->shm = 0;
+      return;
+   }
+
+
+   mesaXErrorFlag = 0;
+   old_handler = XSetErrorHandler(mesaHandleXError);
+   /* This may trigger the X protocol error we're ready to catch: */
+   XShmAttach(xmb->xm_visual->display, &b->shminfo);
+   XSync(xmb->xm_visual->display, False);
+
+   if (mesaXErrorFlag) {
+      /* we are on a remote display, this error is normal, don't print it */
+      XFlush(xmb->xm_visual->display);
+      mesaXErrorFlag = 0;
+      XDestroyImage(b->tempImage);
+      b->tempImage = NULL;
+      b->shm = 0;
+      (void) XSetErrorHandler(old_handler);
+      return;
+   }
+
+
+   /* Finally, try an XShmPutImage to be really sure the extension works */
+#if 0
+   gc = XCreateGC(xmb->xm_visual->display, xmb->drawable, 0, NULL);
+   XShmPutImage(xmb->xm_visual->display, xmb->drawable, gc,
+                b->tempImage, 0, 0, 0, 0, 1, 1 /*one pixel*/, False);
+   XSync(xmb->xm_visual->display, False);
+   XFreeGC(xmb->xm_visual->display, gc);
+   (void) XSetErrorHandler(old_handler);
+   if (mesaXErrorFlag) {
+      XFlush(xmb->xm_visual->display);
+      mesaXErrorFlag = 0;
+      XDestroyImage(b->tempImage);
+      b->tempImage = NULL;
+      b->shm = 0;
+      return;
+   }
+#endif
+}
+
+#else
+
+#define XSHM_ENABLED(b) 0
+
+static void
+alloc_shm_ximage(struct xm_buffer *b, struct xmesa_buffer *xmb,
+                 unsigned width, unsigned height)
+{
+   b->shm = 0;
+}
+#endif /* USE_XSHM */
+
+
+
 
 /* Most callbacks map direcly onto dri_bufmgr operations:
  */
@@ -313,119 +416,6 @@ xm_get_name(struct pipe_winsys *pws)
 }
 
 
-#if defined(USE_XSHM) && !defined(XFree86Server)
-static volatile int mesaXErrorFlag = 0;
-
-/**
- * Catches potential Xlib errors.
- */
-static int
-mesaHandleXError(XMesaDisplay *dpy, XErrorEvent *event)
-{
-   (void) dpy;
-   (void) event;
-   mesaXErrorFlag = 1;
-   return 0;
-}
-
-
-static GLboolean alloc_shm(struct xm_buffer *buf, unsigned size)
-{
-   XShmSegmentInfo *const shminfo = & buf->shminfo;
-
-   shminfo->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT|0777);
-   if (shminfo->shmid < 0) {
-      return GL_FALSE;
-   }
-
-   shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
-   if (shminfo->shmaddr == (char *) -1) {
-      shmctl(shminfo->shmid, IPC_RMID, 0);
-      return GL_FALSE;
-   }
-
-   shminfo->readOnly = False;
-   return GL_TRUE;
-}
-
-
-/**
- * Allocate a shared memory XImage back buffer for the given XMesaBuffer.
- */
-static void
-alloc_shm_ximage(struct xm_buffer *b, struct xmesa_buffer *xmb,
-                 unsigned width, unsigned height)
-{
-   /*
-    * We have to do a _lot_ of error checking here to be sure we can
-    * really use the XSHM extension.  It seems different servers trigger
-    * errors at different points if the extension won't work.  Therefore
-    * we have to be very careful...
-    */
-#if 0
-   GC gc;
-#endif
-   int (*old_handler)(XMesaDisplay *, XErrorEvent *);
-
-   b->tempImage = XShmCreateImage(xmb->xm_visual->display,
-                                  xmb->xm_visual->visinfo->visual,
-                                  xmb->xm_visual->visinfo->depth,
-                                  ZPixmap,
-                                  NULL,
-                                  &b->shminfo,
-                                  width, height);
-   if (b->tempImage == NULL) {
-      b->shm = 0;
-      return;
-   }
-
-
-   mesaXErrorFlag = 0;
-   old_handler = XSetErrorHandler(mesaHandleXError);
-   /* This may trigger the X protocol error we're ready to catch: */
-   XShmAttach(xmb->xm_visual->display, &b->shminfo);
-   XSync(xmb->xm_visual->display, False);
-
-   if (mesaXErrorFlag) {
-      /* we are on a remote display, this error is normal, don't print it */
-      XFlush(xmb->xm_visual->display);
-      mesaXErrorFlag = 0;
-      XDestroyImage(b->tempImage);
-      b->tempImage = NULL;
-      b->shm = 0;
-      (void) XSetErrorHandler(old_handler);
-      return;
-   }
-
-
-   /* Finally, try an XShmPutImage to be really sure the extension works */
-#if 0
-   gc = XCreateGC(xmb->xm_visual->display, xmb->drawable, 0, NULL);
-   XShmPutImage(xmb->xm_visual->display, xmb->drawable, gc,
-                b->tempImage, 0, 0, 0, 0, 1, 1 /*one pixel*/, False);
-   XSync(xmb->xm_visual->display, False);
-   XFreeGC(xmb->xm_visual->display, gc);
-   (void) XSetErrorHandler(old_handler);
-   if (mesaXErrorFlag) {
-      XFlush(xmb->xm_visual->display);
-      mesaXErrorFlag = 0;
-      XDestroyImage(b->tempImage);
-      b->tempImage = NULL;
-      b->shm = 0;
-      return;
-   }
-#endif
-}
-#else
-static void
-alloc_shm_ximage(struct xm_buffer *b, struct xmesa_buffer *xmb,
-                 unsigned width, unsigned height)
-{
-   b->shm = 0;
-}
-#endif
-
-
 static struct pipe_buffer *
 xm_buffer_create(struct pipe_winsys *pws, 
                  unsigned alignment, 
@@ -525,8 +515,7 @@ xm_surface_alloc_storage(struct pipe_winsys *winsys,
 
 
 /**
- * Called via pipe->surface_alloc() to create new surfaces (textures,
- * renderbuffers, etc.
+ * Called via winsys->surface_alloc() to create new surfaces.
  */
 static struct pipe_surface *
 xm_surface_alloc(struct pipe_winsys *ws)
@@ -610,10 +599,19 @@ xmesa_get_pipe_winsys_aub(struct xmesa_visual *xm_vis)
 {
    static struct xmesa_pipe_winsys *ws = NULL;
 
-   if (!ws && getenv("XM_AUB")) {
+   if (!ws) {
       ws = (struct xmesa_pipe_winsys *) xmesa_create_pipe_winsys_aub();
    }
-   else if (!ws) {
+   return &ws->base;
+}
+
+
+static struct pipe_winsys *
+xmesa_get_pipe_winsys(struct xmesa_visual *xm_vis)
+{
+   static struct xmesa_pipe_winsys *ws = NULL;
+
+   if (!ws) {
       ws = CALLOC_STRUCT(xmesa_pipe_winsys);
 
       ws->xm_visual = xm_vis;
@@ -644,45 +642,19 @@ xmesa_get_pipe_winsys_aub(struct xmesa_visual *xm_vis)
 }
 
 
-/**
- * Called via softpipe_winsys->is_format_supported().
- * This function is only called to test formats for front/back color surfaces.
- * The winsys being queried will have been created at glXCreateContext
- * time, with a pixel format corresponding to the context's visual.
- */
-static boolean
-xmesa_is_format_supported(struct softpipe_winsys *sws,
-                          enum pipe_format format)
-{
-   struct xmesa_softpipe_winsys *xmws = xmesa_softpipe_winsys(sws);
-   return (format == xmws->pixelformat);
-}
-
-
-/**
- * Return pointer to a softpipe_winsys object.
- */
-static struct softpipe_winsys *
-xmesa_get_softpipe_winsys(uint pixelformat)
-{
-   struct xmesa_softpipe_winsys *xmws
-      = CALLOC_STRUCT(xmesa_softpipe_winsys);
-   if (!xmws)
-      return NULL;
-
-   xmws->spws.is_format_supported = xmesa_is_format_supported;
-   xmws->pixelformat = pixelformat;
-
-   return &xmws->spws;
-}
-
-
 struct pipe_context *
 xmesa_create_pipe_context(XMesaContext xmesa, uint pixelformat)
 {
-   struct pipe_winsys *pws = xmesa_get_pipe_winsys_aub(xmesa->xm_visual);
+   struct pipe_winsys *pws;
    struct pipe_context *pipe;
    
+   if (getenv("XM_AUB")) {
+      pws = xmesa_get_pipe_winsys_aub(xmesa->xm_visual);
+   }
+   else {
+      pws = xmesa_get_pipe_winsys(xmesa->xm_visual);
+   }
+
 #ifdef GALLIUM_CELL
    if (!getenv("GALLIUM_NOCELL")) {
       struct cell_winsys *cws = cell_get_winsys(pixelformat);
@@ -693,10 +665,9 @@ xmesa_create_pipe_context(XMesaContext xmesa, uint pixelformat)
    else
 #endif
    {
-      struct softpipe_winsys *spws = xmesa_get_softpipe_winsys(pixelformat);
       struct pipe_screen *screen = softpipe_create_screen(pws);
 
-      pipe = softpipe_create(screen, pws, spws);
+      pipe = softpipe_create(screen, pws, NULL);
    }
 
    if (pipe)