Stefan Dösinger : wined3d: Disable blending when clearing.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: fb8fde81d1cfaad2ee488aa5216ee853e000301e
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=fb8fde81d1cfaad2ee488aa5216ee853e000301e

Author: Stefan Dösinger <stefan at codeweavers.com>
Date:   Sun Apr  6 00:49:00 2008 +0200

wined3d: Disable blending when clearing.

---

 dlls/wined3d/context.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/dlls/wined3d/context.c b/dlls/wined3d/context.c
index fb96584..f8fda6e 100644
--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -997,6 +997,12 @@ void ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, ContextU
                 }
             }
 
+            /* Blending and clearing should be orthogonal, but tests on the nvidia driver show that disabling
+             * blending when clearing improves the clearing performance increadibly
+             */
+            glDisable(GL_BLEND);
+            Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
+
             glEnable(GL_SCISSOR_TEST);
             checkGLcall("glEnable GL_SCISSOR_TEST");
             context->last_was_blit = FALSE;