wined3d: Fix an issue in buffer_get_sysmem.

Checking for the doublebuffer flag can cause confusion if no VBO has been allocated for the buffer. Checking for allocatedMemory is the more direct approach.

wined3d: Fix an issue in buffer_get_sysmem.
1fbc6e56 · Stefan Dösinger · Alexandre Julliard · 926fe798 · 1fbc6e56
Commit 1fbc6e56 authored Apr 22, 2009 by Stefan Dösinger Committed by Alexandre Julliard Apr 28, 2009
Hide whitespace changes
Inline Side-by-side

Showing with 2 additions and 1 deletion

buffer.c dlls/wined3d/buffer.c +2 -1

No files found.
--- a/dlls/wined3d/buffer.c
+++ b/dlls/wined3d/buffer.c
@@ -590,7 +590,8 @@ static ULONG STDMETHODCALLTYPE buffer_AddRef(IWineD3DBuffer *iface)
 const BYTE *buffer_get_sysmem(struct wined3d_buffer *This)
 {
-    if(This->flags & WINED3D_BUFFER_DOUBLEBUFFER) return This->resource.allocatedMemory;
+    /* AllocatedMemory exists if the buffer is double buffered or has no buffer object at all */
+    if(This->resource.allocatedMemory) return This->resource.allocatedMemory;
    This->resource.heapMemory = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->resource.size + RESOURCE_ALIGNMENT);
    This->resource.allocatedMemory = (BYTE *)(((ULONG_PTR)This->resource.heapMemory + (RESOURCE_ALIGNMENT - 1)) & ~(RESOURCE_ALIGNMENT - 1));