gdi: Port of the gdi mesa driver to gallium (Alan Hourihane).

1 files changed, 890 insertions, 0 deletions

diff --git a/src/gallium/winsys/gdi/wmesa.c b/src/gallium/winsys/gdi/wmesa.c
new file mode 100644
index 0000000000..74a8292352
--- /dev/null
+++ b/src/gallium/winsys/gdi/wmesa.c
@@ -0,0 +1,890 @@
+/*
+ * Windows (Win32/Win64) device driver for Mesa
+ *
+ */
+
+#include "mtypes.h"
+#include <GL/wmesa.h>
+#include "wmesadef.h"
+
+#undef Elements
+
+#include "pipe/p_winsys.h"
+#include "pipe/p_format.h"
+#include "pipe/p_context.h"
+#include "pipe/p_util.h"
+#include "pipe/p_inlines.h"
+#include "softpipe/sp_winsys.h"
+#include "glapi/glapi.h"
+#include "colors.h"
+
+extern GLvisual *
+_mesa_create_visual( GLboolean rgbFlag,
+                     GLboolean dbFlag,
+                     GLboolean stereoFlag,
+                     GLint redBits,
+                     GLint greenBits,
+                     GLint blueBits,
+                     GLint alphaBits,
+                     GLint indexBits,
+                     GLint depthBits,
+                     GLint stencilBits,
+                     GLint accumRedBits,
+                     GLint accumGreenBits,
+                     GLint accumBlueBits,
+                     GLint accumAlphaBits,
+                     GLint numSamples );
+
+/* linked list of our Framebuffers (windows) */
+WMesaFramebuffer FirstFramebuffer = NULL;
+
+struct wmesa_pipe_winsys
+{
+   struct pipe_winsys base;
+};
+
+/**
+ * Choose the pixel format for the given visual.
+ * This will tell the gallium driver how to pack pixel data into
+ * drawing surfaces.
+ */
+static GLuint
+choose_pixel_format(GLvisual *v)
+{
+#if 1
+   return PIPE_FORMAT_A8R8G8B8_UNORM;
+#else
+   if (   GET_REDMASK(v)   == 0x0000ff
+       && GET_GREENMASK(v) == 0x00ff00
+       && GET_BLUEMASK(v)  == 0xff0000
+       && v->BitsPerPixel == 32) {
+      if (CHECK_BYTE_ORDER(v)) {
+         /* no byteswapping needed */
+         return 0 /* PIXEL_FORMAT_U_A8_B8_G8_R8 */;
+      }
+      else {
+         return PIPE_FORMAT_R8G8B8A8_UNORM;
+      }
+   }
+   else if (   GET_REDMASK(v)   == 0xff0000
+            && GET_GREENMASK(v) == 0x00ff00
+            && GET_BLUEMASK(v)  == 0x0000ff
+            && v->BitsPerPixel == 32) {
+      if (CHECK_BYTE_ORDER(v)) {
+         /* no byteswapping needed */
+         return PIPE_FORMAT_A8R8G8B8_UNORM;
+      }
+      else {
+         return PIPE_FORMAT_B8G8R8A8_UNORM;
+      }
+   }
+   else if (   GET_REDMASK(v)   == 0xf800
+            && GET_GREENMASK(v) == 0x07e0
+            && GET_BLUEMASK(v)  == 0x001f
+            && CHECK_BYTE_ORDER(v)
+            && v->BitsPerPixel == 16) {
+      /* 5-6-5 RGB */
+      return PIPE_FORMAT_R5G6B5_UNORM;
+   }
+
+printf("BITS %d\n",v->BitsPerPixel);
+   assert(0);
+   return 0;
+#endif
+}
+
+/*
+ * Determine the pixel format based on the pixel size.
+ */
+static void wmSetPixelFormat(WMesaFramebuffer pwfb, HDC hDC)
+{
+    /* Only 16 and 32 bit targets are supported now */
+    assert(pwfb->cColorBits == 0 ||
+	   pwfb->cColorBits == 16 || 
+	   pwfb->cColorBits == 32);
+
+    switch(pwfb->cColorBits){
+    case 8:
+	pwfb->pixelformat = PF_INDEX8;
+	break;
+    case 16:
+	pwfb->pixelformat = PF_5R6G5B;
+	break;
+    case 32:
+	pwfb->pixelformat = PF_8R8G8B;
+	break;
+    default:
+	pwfb->pixelformat = PF_BADFORMAT;
+    }
+}
+
+
+/**
+ * Create DIB for back buffer.
+ * We write into this memory with the span routines and then blit it
+ * to the window on a buffer swap.
+ */
+BOOL wmCreateBackingStore(WMesaFramebuffer pwfb, long lxSize, long lySize)
+{
+    HDC          hdc = pwfb->hDC;
+    BITMAPINFO   bmi;
+    LPBITMAPINFO pbmi = &bmi;
+    HDC          hic;
+
+    pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    pbmi->bmiHeader.biWidth = lxSize;
+    pbmi->bmiHeader.biHeight= -lySize;
+    pbmi->bmiHeader.biPlanes = 1;
+    pbmi->bmiHeader.biBitCount = pwfb->cColorBits;
+    pbmi->bmiHeader.biCompression = BI_RGB;
+    pbmi->bmiHeader.biSizeImage = 0;
+    pbmi->bmiHeader.biXPelsPerMeter = 0;
+    pbmi->bmiHeader.biYPelsPerMeter = 0;
+    pbmi->bmiHeader.biClrUsed = 0;
+    pbmi->bmiHeader.biClrImportant = 0;
+    
+    hic = CreateIC("display", NULL, NULL, NULL);
+    pwfb->dib_hDC = CreateCompatibleDC(hic);
+    
+    pwfb->hbmDIB = CreateDIBSection(hic,
+				   pbmi,
+				   DIB_RGB_COLORS,
+				   (void **)&(pwfb->pbPixels),
+				   0,
+				   0);
+    pwfb->hOldBitmap = SelectObject(pwfb->dib_hDC, pwfb->hbmDIB);
+    
+    DeleteDC(hic);
+
+    wmSetPixelFormat(pwfb, pwfb->hDC);
+    return TRUE;
+}
+
+/**
+ * Create a new WMesaFramebuffer object which will correspond to the
+ * given HDC (Window handle).
+ */
+WMesaFramebuffer
+wmesa_new_framebuffer(HDC hdc, GLvisual *visual, GLuint width, GLuint height)
+{
+    WMesaFramebuffer pwfb
+        = (WMesaFramebuffer) malloc(sizeof(struct wmesa_framebuffer));
+    if (pwfb) {
+   	enum pipe_format colorFormat, depthFormat, stencilFormat;
+
+   	/* determine PIPE_FORMATs for buffers */
+   	colorFormat = choose_pixel_format(visual);
+
+   	if (visual->depthBits == 0)
+      		depthFormat = PIPE_FORMAT_NONE;
+	else if (visual->depthBits <= 16)
+      		depthFormat = PIPE_FORMAT_Z16_UNORM;
+	else if (visual->depthBits <= 24)
+      		depthFormat = PIPE_FORMAT_S8Z24_UNORM;
+	else
+      		depthFormat = PIPE_FORMAT_Z32_UNORM;
+
+	if (visual->stencilBits == 8) {
+      		if (depthFormat == PIPE_FORMAT_S8Z24_UNORM)
+			stencilFormat = depthFormat;
+		else
+			stencilFormat = PIPE_FORMAT_S8_UNORM;
+   	}
+   	else {
+      		stencilFormat = PIPE_FORMAT_NONE;
+   	}
+
+   	pwfb->stfb = st_create_framebuffer(visual,
+                                   colorFormat, depthFormat, stencilFormat,
+                                   width, height,
+                                   (void *) pwfb);
+
+        pwfb->cColorBits = GetDeviceCaps(hdc, BITSPIXEL);
+
+#if 0
+	wmCreateBackingStore(pwfb, width, height);
+#endif
+
+        pwfb->hDC = hdc;
+        /* insert at head of list */
+	pwfb->next = FirstFramebuffer;
+        FirstFramebuffer = pwfb;
+    }
+    return pwfb;
+}
+
+/**
+ * Given an hdc, free the corresponding WMesaFramebuffer
+ */
+void
+wmesa_free_framebuffer(HDC hdc)
+{
+    WMesaFramebuffer pwfb, prev;
+    for (pwfb = FirstFramebuffer; pwfb; pwfb = pwfb->next) {
+        if (pwfb->hDC == hdc)
+            break;
+	prev = pwfb;
+    }
+    if (pwfb) {
+	if (pwfb == FirstFramebuffer)
+	    FirstFramebuffer = pwfb->next;
+	else
+	    prev->next = pwfb->next;
+	free(pwfb);
+    }
+}
+
+/**
+ * Given an hdc, return the corresponding WMesaFramebuffer
+ */
+WMesaFramebuffer
+wmesa_lookup_framebuffer(HDC hdc)
+{
+    WMesaFramebuffer pwfb;
+    for (pwfb = FirstFramebuffer; pwfb; pwfb = pwfb->next) {
+        if (pwfb->hDC == hdc)
+            return pwfb;
+    }
+    return NULL;
+}
+
+
+/**
+ * Given a GLframebuffer, return the corresponding WMesaFramebuffer.
+ */
+static WMesaFramebuffer wmesa_framebuffer(GLframebuffer *fb)
+{
+    return (WMesaFramebuffer) fb;
+}
+
+
+/**
+ * Given a GLcontext, return the corresponding WMesaContext.
+ */
+static WMesaContext wmesa_context(const GLcontext *ctx)
+{
+    return (WMesaContext) ctx;
+}
+
+static wmDeleteBackingStore(WMesaFramebuffer pwfb)
+{
+    if (pwfb->hbmDIB) {
+	SelectObject(pwfb->dib_hDC, pwfb->hOldBitmap);
+	DeleteDC(pwfb->dib_hDC);
+	DeleteObject(pwfb->hbmDIB);
+    }
+}
+
+
+/**
+ * Find the width and height of the window named by hdc.
+ */
+static void
+get_window_size(HDC hdc, GLuint *width, GLuint *height)
+{
+    if (WindowFromDC(hdc)) {
+        RECT rect;
+        GetClientRect(WindowFromDC(hdc), &rect);
+        *width = rect.right - rect.left;
+        *height = rect.bottom - rect.top;
+    }
+    else { /* Memory context */
+        /* From contributed code - use the size of the desktop
+         * for the size of a memory context (?) */
+        *width = GetDeviceCaps(hdc, HORZRES);
+        *height = GetDeviceCaps(hdc, VERTRES);
+    }
+}
+
+/**
+ * Low-level OS/window system memory buffer
+ */
+struct wm_buffer
+{
+   struct pipe_buffer base;
+   boolean userBuffer;  /** Is this a user-space buffer? */
+   void *data;
+   void *mapped;
+};
+
+struct wmesa_surface
+{
+   struct pipe_surface surface;
+
+   int no_swap;
+};
+
+
+/** Cast wrapper */
+static INLINE struct wmesa_surface *
+wmesa_surface(struct pipe_surface *ps)
+{
+//   assert(0);
+   return (struct wmesa_surface *) ps;
+}
+
+/**
+ * Turn the softpipe opaque buffer pointer into a dri_bufmgr opaque
+ * buffer pointer...
+ */
+static INLINE struct wm_buffer *
+wm_buffer( struct pipe_buffer *buf )
+{
+   return (struct wm_buffer *)buf;
+}
+
+
+
+/* Most callbacks map direcly onto dri_bufmgr operations:
+ */
+static void *
+wm_buffer_map(struct pipe_winsys *pws, struct pipe_buffer *buf,
+              unsigned flags)
+{
+   struct wm_buffer *wm_buf = wm_buffer(buf);
+   wm_buf->mapped = wm_buf->data;
+   return wm_buf->mapped;
+}
+
+static void
+wm_buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer *buf)
+{
+   struct wm_buffer *wm_buf = wm_buffer(buf);
+   wm_buf->mapped = NULL;
+}
+
+static void
+wm_buffer_destroy(struct pipe_winsys *pws,
+                  struct pipe_buffer *buf)
+{
+   struct wm_buffer *oldBuf = wm_buffer(buf);
+
+   if (oldBuf->data) {
+      {
+         if (!oldBuf->userBuffer) {
+            align_free(oldBuf->data);
+         }
+      }
+
+      oldBuf->data = NULL;
+   }
+
+   free(oldBuf);
+}
+
+
+static void
+wm_flush_frontbuffer(struct pipe_winsys *pws,
+                     struct pipe_surface *surf,
+                     void *context_private)
+{
+    WMesaContext pwc = context_private;
+    WMesaFramebuffer pwfb = wmesa_lookup_framebuffer(pwc->hDC);
+   struct wm_buffer *wm_buf;
+    BITMAPINFO bmi, *pbmi;
+
+#if 0
+    if (pwfb)
+	BitBlt(pwfb->hDC, 0, 0, pwfb->stfb->Base.Width, pwfb->stfb->Base.Height,
+	       pwfb->dib_hDC, 0, 0, SRCCOPY);
+#else
+    wm_buf = wm_buffer(surf->buffer);
+
+    pbmi = &bmi;
+    memset(pbmi, 0, sizeof(BITMAPINFO));
+    pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    pbmi->bmiHeader.biWidth = pwfb->stfb->Base.Width;
+    pbmi->bmiHeader.biHeight= -((long)pwfb->stfb->Base.Height);
+    pbmi->bmiHeader.biPlanes = 1;
+    pbmi->bmiHeader.biBitCount = pwfb->cColorBits;
+    pbmi->bmiHeader.biCompression = BI_RGB;
+    pbmi->bmiHeader.biSizeImage = 0;
+    pbmi->bmiHeader.biXPelsPerMeter = 0;
+    pbmi->bmiHeader.biYPelsPerMeter = 0;
+    pbmi->bmiHeader.biClrUsed = 0;
+    pbmi->bmiHeader.biClrImportant = 0;
+
+    StretchDIBits(pwfb->hDC, 0, 0, pwfb->stfb->Base.Width, pwfb->stfb->Base.Height, 0, 0, pwfb->stfb->Base.Width, pwfb->stfb->Base.Height, wm_buf->data, pbmi, 0, SRCCOPY);
+#endif
+}
+
+
+
+static const char *
+wm_get_name(struct pipe_winsys *pws)
+{
+   return "gdi";
+}
+
+static struct pipe_buffer *
+wm_buffer_create(struct pipe_winsys *pws, 
+                 unsigned alignment, 
+                 unsigned usage,
+                 unsigned size)
+{
+   struct wm_buffer *buffer = CALLOC_STRUCT(wm_buffer);
+
+   buffer->base.refcount = 1;
+   buffer->base.alignment = alignment;
+   buffer->base.usage = usage;
+   buffer->base.size = size;
+
+   if (buffer->data == NULL) {
+      /* align to 16-byte multiple for Cell */
+      buffer->data = align_malloc(size, max(alignment, 16));
+   }
+
+   return &buffer->base;
+}
+
+
+/**
+ * Create buffer which wraps user-space data.
+ */
+static struct pipe_buffer *
+wm_user_buffer_create(struct pipe_winsys *pws, void *ptr, unsigned bytes)
+{
+   struct wm_buffer *buffer = CALLOC_STRUCT(wm_buffer);
+   buffer->base.refcount = 1;
+   buffer->base.size = bytes;
+   buffer->userBuffer = TRUE;
+   buffer->data = ptr;
+
+   return &buffer->base;
+}
+
+
+
+/**
+ * Round n up to next multiple.
+ */
+static INLINE unsigned
+round_up(unsigned n, unsigned multiple)
+{
+   return (n + multiple - 1) & ~(multiple - 1);
+}
+
+static int
+wm_surface_alloc_storage(struct pipe_winsys *winsys,
+                         struct pipe_surface *surf,
+                         unsigned width, unsigned height,
+                         enum pipe_format format, 
+                         unsigned flags)
+{
+   const unsigned alignment = 64;
+
+   surf->width = width;
+   surf->height = height;
+   surf->format = format;
+   surf->cpp = pf_get_size(format);
+   surf->pitch = round_up(width, alignment / surf->cpp);
+
+   assert(!surf->buffer);
+   surf->buffer = winsys->buffer_create(winsys, alignment,
+                                        PIPE_BUFFER_USAGE_PIXEL,
+                                        surf->pitch * surf->cpp * height);
+   if(!surf->buffer)
+      return -1;
+   
+   return 0;
+}
+
+
+/**
+ * Called via winsys->surface_alloc() to create new surfaces.
+ */
+static struct pipe_surface *
+wm_surface_alloc(struct pipe_winsys *ws)
+{
+   struct wmesa_surface *wms = CALLOC_STRUCT(wmesa_surface);
+   static boolean no_swap = 0;
+   static boolean firsttime = 1;
+
+   if (firsttime) {
+      no_swap = getenv("SP_NO_RAST") != NULL;
+      firsttime = 0;
+   }
+
+   assert(ws);
+
+   wms->surface.refcount = 1;
+   wms->surface.winsys = ws;
+
+   wms->no_swap = no_swap;
+   
+   return &wms->surface;
+}
+
+static void
+wm_surface_release(struct pipe_winsys *winsys, struct pipe_surface **s)
+{
+   struct pipe_surface *surf = *s;
+   surf->refcount--;
+   if (surf->refcount == 0) {
+      if (surf->buffer)
+	pipe_buffer_reference(winsys, &surf->buffer, NULL);
+      free(surf);
+   }
+   *s = NULL;
+}
+
+
+/*
+ * Fence functions - basically nothing to do, as we don't create any actual
+ * fence objects.
+ */
+
+static void
+wm_fence_reference(struct pipe_winsys *sws, struct pipe_fence_handle **ptr,
+                   struct pipe_fence_handle *fence)
+{
+}
+
+
+static int
+wm_fence_signalled(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
+                   unsigned flag)
+{
+   return 0;
+}
+
+
+static int
+wm_fence_finish(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
+                unsigned flag)
+{
+   return 0;
+}
+
+
+
+struct pipe_winsys *
+wmesa_get_pipe_winsys(GLvisual *visual)
+{
+   static struct wmesa_pipe_winsys *ws = NULL;
+
+   if (!ws) {
+      ws = CALLOC_STRUCT(wmesa_pipe_winsys);
+
+      /* Fill in this struct with callbacks that pipe will need to
+       * communicate with the window system, buffer manager, etc. 
+       */
+      ws->base.buffer_create = wm_buffer_create;
+      ws->base.user_buffer_create = wm_user_buffer_create;
+      ws->base.buffer_map = wm_buffer_map;
+      ws->base.buffer_unmap = wm_buffer_unmap;
+      ws->base.buffer_destroy = wm_buffer_destroy;
+
+      ws->base.surface_alloc = wm_surface_alloc;
+      ws->base.surface_alloc_storage = wm_surface_alloc_storage;
+      ws->base.surface_release = wm_surface_release;
+
+      ws->base.fence_reference = wm_fence_reference;
+      ws->base.fence_signalled = wm_fence_signalled;
+      ws->base.fence_finish = wm_fence_finish;
+
+      ws->base.flush_frontbuffer = wm_flush_frontbuffer;
+      ws->base.get_name = wm_get_name;
+   }
+
+   return &ws->base;
+}
+
+
+
+/**********************************************************************/
+/*****                   WMESA Functions                          *****/
+/**********************************************************************/
+
+WMesaContext WMesaCreateContext(HDC hDC, 
+				HPALETTE* Pal,
+				GLboolean rgb_flag,
+				GLboolean db_flag,
+				GLboolean alpha_flag)
+{
+   WMesaContext c;
+   struct pipe_winsys *pws;
+   struct pipe_context *pipe;
+   struct pipe_screen *screen;
+   GLint red_bits, green_bits, blue_bits, alpha_bits;
+   GLvisual *visual;
+
+   (void) Pal;
+    
+   /* Indexed mode not supported */
+   if (!rgb_flag)
+	return NULL;
+
+   /* Allocate wmesa context */
+   c = CALLOC_STRUCT(wmesa_context);
+   if (!c)
+	return NULL;
+
+   c->hDC = hDC;
+
+    /* Get data for visual */
+    /* Dealing with this is actually a bit of overkill because Mesa will end
+     * up treating all color component size requests less than 8 by using 
+     * a single byte per channel.  In addition, the interface to the span
+     * routines passes colors as an entire byte per channel anyway, so there
+     * is nothing to be saved by telling the visual to be 16 bits if the device
+     * is 16 bits.  That is, Mesa is going to compute colors down to 8 bits per
+     * channel anyway.
+     * But we go through the motions here anyway.
+     */
+    c->cColorBits = GetDeviceCaps(c->hDC, BITSPIXEL);
+
+    switch (c->cColorBits) {
+    case 16:
+	red_bits = green_bits = blue_bits = 5;
+	alpha_bits = 0;
+	break;
+    default:
+	red_bits = green_bits = blue_bits = 8;
+	alpha_bits = 8;
+	break;
+    }
+    /* Create visual based on flags */
+    visual = _mesa_create_visual(rgb_flag,
+                                 db_flag,    /* db_flag */
+                                 GL_FALSE,   /* stereo */
+                                 red_bits, green_bits, blue_bits, /* color RGB */
+                                 alpha_flag ? alpha_bits : 0, /* color A */
+                                 0,          /* index bits */
+                                 DEFAULT_SOFTWARE_DEPTH_BITS, /* depth_bits */
+                                 8,          /* stencil_bits */
+                                 16,16,16,   /* accum RGB */
+                                 alpha_flag ? 16 : 0, /* accum A */
+                                 1);         /* num samples */
+    
+    if (!visual) {
+	_mesa_free(c);
+	return NULL;
+    }
+
+    pws = wmesa_get_pipe_winsys(visual);
+
+    screen = softpipe_create_screen(pws);
+
+    if (!screen) {
+        _mesa_free(c);
+	return NULL;
+   }
+
+   pipe = softpipe_create(screen, pws, NULL);
+
+   if (!pipe) {
+      /* FIXME - free screen */
+      _mesa_free(c);
+      return NULL;
+   }
+
+   pipe->priv = c;
+
+   c->st = st_create_context(pipe, visual, NULL);
+
+   c->st->ctx->DriverCtx = c;
+
+   return c;
+}
+
+
+void WMesaDestroyContext( WMesaContext pwc )
+{
+    GLcontext *ctx = pwc->st->ctx;
+    WMesaFramebuffer pwfb;
+    GET_CURRENT_CONTEXT(cur_ctx);
+
+    if (cur_ctx == ctx) {
+        /* unbind current if deleting current context */
+        WMesaMakeCurrent(NULL, NULL);
+    }
+
+    /* clean up frame buffer resources */
+    pwfb = wmesa_lookup_framebuffer(pwc->hDC);
+    if (pwfb) {
+#if 0
+	wmDeleteBackingStore(pwfb);
+#endif
+	wmesa_free_framebuffer(pwc->hDC);
+    }
+
+    /* Release for device, not memory contexts */
+    if (WindowFromDC(pwc->hDC) != NULL)
+    {
+      ReleaseDC(WindowFromDC(pwc->hDC), pwc->hDC);
+    }
+    
+    st_destroy_context(pwc->st);
+    _mesa_free(pwc);
+}
+
+
+void WMesaMakeCurrent(WMesaContext c, HDC hdc)
+{
+    GLuint width = 0, height = 0;
+    WMesaFramebuffer pwfb;
+
+    {
+        /* return if already current */
+        GET_CURRENT_CONTEXT(ctx);
+        WMesaContext pwc = wmesa_context(ctx);
+        if (pwc && c == pwc && pwc->hDC == hdc)
+            return;
+    }
+
+    pwfb = wmesa_lookup_framebuffer(hdc);
+
+    if (hdc) {
+        get_window_size(hdc, &width, &height);
+    }
+
+    /* Lazy creation of framebuffers */
+    if (c && !pwfb && (hdc != 0)) {
+        GLvisual *visual = &c->st->ctx->Visual;
+
+        pwfb = wmesa_new_framebuffer(hdc, visual, width, height);
+    }
+
+    if (c && pwfb) {
+      	st_make_current(c->st, pwfb->stfb, pwfb->stfb);
+
+	st_resize_framebuffer(pwfb->stfb, width, height);
+   }
+   else {
+      /* Detach */
+      st_make_current( NULL, NULL, NULL );
+   }
+}
+
+
+void WMesaSwapBuffers( HDC hdc )
+{
+   struct pipe_surface *surf;
+   struct wm_buffer *wm_buf;
+    WMesaFramebuffer pwfb = wmesa_lookup_framebuffer(hdc);
+    BITMAPINFO bmi, *pbmi;
+
+    if (!pwfb) {
+        _mesa_problem(NULL, "wmesa: swapbuffers on unknown hdc");
+        return;
+    }
+
+
+    /* If we're swapping the buffer associated with the current context
+     * we have to flush any pending rendering commands first.
+     */
+    st_notify_swapbuffers(pwfb->stfb);
+
+#if 0
+    BitBlt(pwfb->hDC, 0, 0, pwfb->stfb->Base.Width, pwfb->stfb->Base.Height,
+	       pwfb->dib_hDC, 0, 0, SRCCOPY);
+#else
+    surf = st_get_framebuffer_surface(pwfb->stfb, ST_SURFACE_BACK_LEFT);
+    wm_buf = wm_buffer(surf->buffer);
+
+    pbmi = &bmi;
+    memset(pbmi, 0, sizeof(BITMAPINFO));
+    pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    pbmi->bmiHeader.biWidth = pwfb->stfb->Base.Width;
+    pbmi->bmiHeader.biHeight= -((long)pwfb->stfb->Base.Height);
+    pbmi->bmiHeader.biPlanes = 1;
+    pbmi->bmiHeader.biBitCount = pwfb->cColorBits;
+    pbmi->bmiHeader.biCompression = BI_RGB;
+    pbmi->bmiHeader.biSizeImage = 0;
+    pbmi->bmiHeader.biXPelsPerMeter = 0;
+    pbmi->bmiHeader.biYPelsPerMeter = 0;
+    pbmi->bmiHeader.biClrUsed = 0;
+    pbmi->bmiHeader.biClrImportant = 0;
+
+    StretchDIBits(pwfb->hDC, 0, 0, pwfb->stfb->Base.Width, pwfb->stfb->Base.Height, 0, 0, pwfb->stfb->Base.Width, pwfb->stfb->Base.Height, wm_buf->data, pbmi, 0, SRCCOPY);
+
+    {
+        GLuint width = 0, height = 0;
+
+        get_window_size(pwfb->hDC, &width, &height);
+
+	st_resize_framebuffer(pwfb->stfb, width, height);
+    }
+#endif
+}
+
+/* This is hopefully a temporary hack to define some needed dispatch
+ * table entries.  Hopefully, I'll find a better solution.  The
+ * dispatch table generation scripts ought to be making these dummy
+ * stubs as well. */
+#if !defined(__MINGW32__) || !defined(GL_NO_STDCALL)
+void gl_dispatch_stub_543(void){}
+void gl_dispatch_stub_544(void){}
+void gl_dispatch_stub_545(void){}
+void gl_dispatch_stub_546(void){}
+void gl_dispatch_stub_547(void){}
+void gl_dispatch_stub_548(void){}
+void gl_dispatch_stub_549(void){}
+void gl_dispatch_stub_550(void){}
+void gl_dispatch_stub_551(void){}
+void gl_dispatch_stub_552(void){}
+void gl_dispatch_stub_553(void){}
+void gl_dispatch_stub_554(void){}
+void gl_dispatch_stub_555(void){}
+void gl_dispatch_stub_556(void){}
+void gl_dispatch_stub_557(void){}
+void gl_dispatch_stub_558(void){}
+void gl_dispatch_stub_559(void){}
+void gl_dispatch_stub_560(void){}
+void gl_dispatch_stub_561(void){}
+void gl_dispatch_stub_565(void){}
+void gl_dispatch_stub_566(void){}
+void gl_dispatch_stub_577(void){}
+void gl_dispatch_stub_578(void){}
+void gl_dispatch_stub_603(void){}
+void gl_dispatch_stub_645(void){}
+void gl_dispatch_stub_646(void){}
+void gl_dispatch_stub_647(void){}
+void gl_dispatch_stub_648(void){}
+void gl_dispatch_stub_649(void){}
+void gl_dispatch_stub_650(void){}
+void gl_dispatch_stub_651(void){}
+void gl_dispatch_stub_652(void){}
+void gl_dispatch_stub_653(void){}
+void gl_dispatch_stub_733(void){}
+void gl_dispatch_stub_734(void){}
+void gl_dispatch_stub_735(void){}
+void gl_dispatch_stub_736(void){}
+void gl_dispatch_stub_737(void){}
+void gl_dispatch_stub_738(void){}
+void gl_dispatch_stub_744(void){}
+void gl_dispatch_stub_745(void){}
+void gl_dispatch_stub_746(void){}
+void gl_dispatch_stub_760(void){}
+void gl_dispatch_stub_761(void){}
+void gl_dispatch_stub_763(void){}
+void gl_dispatch_stub_765(void){}
+void gl_dispatch_stub_766(void){}
+void gl_dispatch_stub_767(void){}
+void gl_dispatch_stub_768(void){}
+
+void gl_dispatch_stub_562(void){}
+void gl_dispatch_stub_563(void){}
+void gl_dispatch_stub_564(void){}
+void gl_dispatch_stub_567(void){}
+void gl_dispatch_stub_568(void){}
+void gl_dispatch_stub_569(void){}
+void gl_dispatch_stub_580(void){}
+void gl_dispatch_stub_581(void){}
+void gl_dispatch_stub_606(void){}
+void gl_dispatch_stub_654(void){}
+void gl_dispatch_stub_655(void){}
+void gl_dispatch_stub_656(void){}
+void gl_dispatch_stub_739(void){}
+void gl_dispatch_stub_740(void){}
+void gl_dispatch_stub_741(void){}
+void gl_dispatch_stub_748(void){}
+void gl_dispatch_stub_749(void){}
+void gl_dispatch_stub_769(void){}
+void gl_dispatch_stub_770(void){}
+void gl_dispatch_stub_771(void){}
+void gl_dispatch_stub_772(void){}
+void gl_dispatch_stub_773(void){}
+
+#endif