opengl32: Copy to the wow64 buffer even for write maps.

GL_MAP_WRITE_BIT does not mean that the buffer will be filled, unless an INVALIDATE bit is explicitly set. The application is free to partially update the buffer, even if it does not read from it. Thanks to Aida Jonikienė for doing most of the debugging here. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55045

opengl32: Copy to the wow64 buffer even for write maps.
77981d45 · Zebediah Figura · Alexandre Julliard · 1fca47b7 · 77981d45
Commit 77981d45 authored Jul 13, 2023 by Zebediah Figura Committed by Alexandre Julliard Jul 14, 2023
Hide whitespace changes
Inline Side-by-side

Showing with 1 addition and 1 deletion

unix_wgl.c dlls/opengl32/unix_wgl.c +1 -1

No files found.
--- a/dlls/opengl32/unix_wgl.c
+++ b/dlls/opengl32/unix_wgl.c
@@ -1827,7 +1827,7 @@ static NTSTATUS wow64_map_buffer( TEB *teb, GLint buffer, GLenum target, void *p
 {
    if (*ret)  /* wow64 pointer provided, map buffer to it */
    {
-        if (access & GL_MAP_READ_BIT)
+        if (!(access & (GL_MAP_INVALIDATE_RANGE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT)))
        {
            TRACE( "Copying %#zx from buffer at %p to wow64 buffer %p\n", size, ptr, UlongToPtr(*ret) );
            memcpy( UlongToPtr(*ret), ptr, size );