From fb8fde81d1cfaad2ee488aa5216ee853e000301e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20D=C3=B6singer?= <stefan@codeweavers.com>
Date: Sun, 6 Apr 2008 00:49:00 +0200
Subject: [PATCH] wined3d: Disable blending when clearing.

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

diff --git a/dlls/wined3d/context.c b/dlls/wined3d/context.c
index fb965847acb..f8fda6e725a 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;