Roderick Colenbrander : wined3d: Request alpha in backbuffer mode, to work correctly with multiple opengl pixel formats.
Alexandre Julliard
julliard at winehq.org
Mon Feb 25 06:51:00 CST 2008
Module: wine
Branch: master
Commit: 68467cf344e51f0ee0773d7e876916a4f8998e68
URL: http://source.winehq.org/git/wine.git/?a=commit;h=68467cf344e51f0ee0773d7e876916a4f8998e68
Author: Roderick Colenbrander <thunderbird2k at gmx.net>
Date: Fri Feb 22 23:27:38 2008 +0000
wined3d: Request alpha in backbuffer mode, to work correctly with multiple opengl pixel formats.
---
dlls/wined3d/context.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/dlls/wined3d/context.c b/dlls/wined3d/context.c
index 19d2f30..769949a 100644
--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -210,6 +210,7 @@ WineD3DContext *CreateContext(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *tar
int attribs[256];
int nAttribs = 0;
unsigned int nFormats;
+ WINED3DFORMAT fmt = target->resource.format;
hdc = GetDC(win_handle);
if(hdc == NULL) {
@@ -224,7 +225,15 @@ WineD3DContext *CreateContext(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *tar
PUSH2(WGL_SUPPORT_OPENGL_ARB, GL_TRUE);
PUSH2(WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB); /* Make sure we receive an accelerated format. On windows (at least on ATI) this is not always the case */
- if(!getColorBits(target->resource.format, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits)) {
+ /* In case of ORM_BACKBUFFER, make sure to request an alpha component for X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
+ if(wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER) {
+ if(target->resource.format == WINED3DFMT_X4R4G4B4)
+ fmt = WINED3DFMT_A4R4G4B4;
+ else if(target->resource.format == WINED3DFMT_X8R8G8B8)
+ fmt = WINED3DFMT_A8R8G8B8;
+ }
+
+ if(!getColorBits(fmt, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits)) {
ERR("Unable to get color bits for format %#x!\n", target->resource.format);
return FALSE;
}
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