mesa: allow GL_BITMAP type in _mesa_image_image_stride()

It's possible to hand a GL_COLOR_INDEX/GL_BITMAP image to glTexImage3D()
which gets converted to RGBA via the glPixelMap tables.

This fixes a failure with piglit/fdo10370 with Gallium.

diff --git a/src/mesa/main/image.c b/src/mesa/main/image.c
index ddae456fa129b4b4c6f03bb80ed415c20d05c90d..332febf91f9ac6d27d49cc876f34d84411ffe943 100644 (file)
--- a/src/mesa/main/image.c
+++ b/src/mesa/main/image.c
@@ -1,8 +1,9 @@
 /*
  * Mesa 3-D graphics library
- * Version:  7.1
+ * Version:  7.5
  *
  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  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"),
@@ -755,12 +756,20 @@ _mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
                           GLint width, GLint height,
                           GLenum format, GLenum type )
 {
+   GLint bytesPerRow, bytesPerImage, remainder;
+
    ASSERT(packing);
-   ASSERT(type != GL_BITMAP);
 
-   {
+   if (type == GL_BITMAP) {
+      if (packing->RowLength == 0) {
+         bytesPerRow = (width + 7) / 8;
+      }
+      else {
+         bytesPerRow = (packing->RowLength + 7) / 8;
+      }
+   }
+   else {
       const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);
-      GLint bytesPerRow, bytesPerImage, remainder;
 
       if (bytesPerPixel <= 0)
          return -1;  /* error */
@@ -770,17 +779,18 @@ _mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
       else {
          bytesPerRow = bytesPerPixel * packing->RowLength;
       }
-      remainder = bytesPerRow % packing->Alignment;
-      if (remainder > 0)
-         bytesPerRow += (packing->Alignment - remainder);
+   }
 
-      if (packing->ImageHeight == 0)
-         bytesPerImage = bytesPerRow * height;
-      else
-         bytesPerImage = bytesPerRow * packing->ImageHeight;
+   remainder = bytesPerRow % packing->Alignment;
+   if (remainder > 0)
+      bytesPerRow += (packing->Alignment - remainder);
 
-      return bytesPerImage;
-   }
+   if (packing->ImageHeight == 0)
+      bytesPerImage = bytesPerRow * height;
+   else
+      bytesPerImage = bytesPerRow * packing->ImageHeight;
+
+   return bytesPerImage;
 }