[reactos] 01/01: [DDRAW] Handle DDLOCK_WRITEONLY in wined3dmapflags_from_ddrawmapflags() CORE-18378 (#4713)

[Joachim Henze]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=305aae75f59a9e0e43b921...

commit 305aae75f59a9e0e43b9213d86dbafe9e750c525
Author:     Joachim Henze [e-mail]
AuthorDate: Sun Sep 18 20:53:30 2022 +0200
Commit:     GitHub [e-mail]
CommitDate: Sun Sep 18 20:53:30 2022 +0200

[DDRAW] Handle DDLOCK_WRITEONLY in wined3dmapflags_from_ddrawmapflags() CORE-18378 (#4713)

Mutes the logging:
    fixme:(dll/directx/wine/ddraw/utils.c:584) Unhandled flags 0x20.
    gets logged many times per second.

It does affect several applications, e.g. the game 'Anno 1602' from 1998, and the 'Diablo 2 demo' from rapps,
    For both games it can be observed with both: our VBEMP driver and the VBox4.3.12 3D-accelerated-driver.

Muting may improve performance a bit in such apps.
    It gets logged although no missing features can be perceived visually in the rendering.

Fix it by importing Wine-commit b943c7910b3261c9603343369cd632f7a3b56bba
     ddraw: Handle DDLOCK_WRITEONLY in wined3dmapflags_from_ddrawmapflags().
     Signed-off-by: Henri Verbeet [e-mail]
     Signed-off-by: Alexandre Julliard [e-mail]
---
 dll/directx/wine/ddraw/utils.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dll/directx/wine/ddraw/utils.c b/dll/directx/wine/ddraw/utils.c
index 65f24dc13fd..b0a028d4a57 100644
--- a/dll/directx/wine/ddraw/utils.c
+++ b/dll/directx/wine/ddraw/utils.c
@@ -570,7 +570,7 @@ unsigned int wined3dmapflags_from_ddrawmapflags(unsigned int flags)
     unsigned int wined3d_flags;

wined3d_flags = flags & handled;
-    if (!(flags & (DDLOCK_NOOVERWRITE | DDLOCK_DISCARDCONTENTS)))
+    if (!(flags & (DDLOCK_NOOVERWRITE | DDLOCK_DISCARDCONTENTS | DDLOCK_WRITEONLY)))
         wined3d_flags |= WINED3D_MAP_READ;
     if (!(flags & DDLOCK_READONLY))
         wined3d_flags |= WINED3D_MAP_WRITE;
@@ -578,7 +578,7 @@ unsigned int wined3dmapflags_from_ddrawmapflags(unsigned int flags)
         wined3d_flags |= WINED3D_MAP_READ | WINED3D_MAP_WRITE;
     if (flags & DDLOCK_NODIRTYUPDATE)
         wined3d_flags |= WINED3D_MAP_NO_DIRTY_UPDATE;
-    flags &= ~(handled | DDLOCK_WAIT | DDLOCK_READONLY | DDLOCK_NODIRTYUPDATE);
+    flags &= ~(handled | DDLOCK_WAIT | DDLOCK_READONLY | DDLOCK_WRITEONLY | DDLOCK_NODIRTYUPDATE);

if (flags)
         FIXME("Unhandled flags %#x.\n", flags);