gdi32: Add a dib primitive function table.

dlls/gdi32/Makefile.in

@@ -15,6 +15,7 @@ C_SRCS = \
 	dc.c \
 	dib.c \
 	dibdrv/dc.c \
+	dibdrv/primitives.c \
 	driver.c \
 	enhmetafile.c \
 	enhmfdrv/bitblt.c \

dlls/gdi32/dibdrv/dc.c

@@ -36,6 +36,13 @@ static BOOL CDECL dibdrv_DeleteDC( PHYSDEV dev )
     return 0;
 }
 
+static void init_bit_fields(dib_info *dib, const DWORD *bit_fields)
+{
+    dib->red_mask    = bit_fields[0];
+    dib->green_mask  = bit_fields[1];
+    dib->blue_mask   = bit_fields[2];
+}
+
 static BOOL init_dib(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit_fields, void *bits)
 {
     dib->bit_count = bi->biBitCount;
@@ -55,8 +62,21 @@ static BOOL init_dib(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit
         dib->stride  = -dib->stride;
     }
 
+    dib->funcs = &funcs_null;
+
     switch(dib->bit_count)
     {
+    case 32:
+         init_bit_fields(dib, bit_fields);
+         if(dib->red_mask == 0xff0000 && dib->green_mask == 0x00ff00 && dib->blue_mask == 0x0000ff)
+             dib->funcs = &funcs_8888;
+         else
+         {
+             TRACE("32 bpp bitmasks not supported, will forward to graphics driver.\n");
+             return FALSE;
+         }
+         break;
+
     default:
         TRACE("bpp %d not supported, will forward to graphics driver.\n", dib->bit_count);
         return FALSE;

dlls/gdi32/dibdrv/dibdrv.h

@@ -22,3 +22,11 @@ static inline dibdrv_physdev *get_dibdrv_pdev( PHYSDEV dev )
 {
     return (dibdrv_physdev *)dev;
 }
+
+typedef struct primitive_funcs
+{
+    DWORD (* colorref_to_pixel)(const dib_info *dib, COLORREF color);
+} primitive_funcs;
+
+extern const primitive_funcs funcs_8888 DECLSPEC_HIDDEN;
+extern const primitive_funcs funcs_null DECLSPEC_HIDDEN;

dlls/gdi32/dibdrv/primitives.c

+/*
+ * DIB driver primitives.
+ *
+ * Copyright 2011 Huw Davies
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "gdi_private.h"
+#include "dibdrv.h"
+
+static DWORD colorref_to_pixel_888(const dib_info *dib, COLORREF color)
+{
+    return ( ((color >> 16) & 0xff) | (color & 0xff00) | ((color << 16) & 0xff0000) );
+}
+
+static DWORD colorref_to_pixel_null(const dib_info *dib, COLORREF color)
+{
+    return 0;
+}
+
+const primitive_funcs funcs_8888 =
+{
+    colorref_to_pixel_888
+};
+
+const primitive_funcs funcs_null =
+{
+    colorref_to_pixel_null
+};

dlls/gdi32/gdi_private.h

@@ -86,6 +86,8 @@ typedef struct
     void *bits; /* points to the top-left corner of the dib. */
 
     DWORD red_mask, green_mask, blue_mask;
+
+    const struct primitive_funcs *funcs;
 } dib_info;
 
 typedef struct dibdrv_physdev