[6/7] WineD3D: Disable depth stencil related states without a depth stencil buffer

[Stefan Dösinger]

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From e638bb37df11284514bd09aec5be56ce715f4855 Mon Sep 17 00:00:00 2001
From: Stefan Doesinger <stefan at codeweavers.com>
Date: Tue, 6 Mar 2007 13:54:05 +0100
Subject: [PATCH] WineD3D: Disable depth stencil related states without a depth stencil buffer

Except with fbos, it is not possible to remove the depth stencil buffer from the opengl frame buffer, so when
the d3d app sets a NULL depth stencil disable all states that work with the depth stencil buffer.
---
 dlls/wined3d/device.c |    7 +++++++
 dlls/wined3d/state.c  |   20 +++++++++++++++++++-
 2 files changed, 26 insertions(+), 1 deletions(-)

diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index 7436ecb..654bf13 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -5175,6 +5175,13 @@ static HRESULT WINAPI IWineD3DDeviceImpl_SetDepthStencilSurface(IWineD3DDevice *
         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO) {
             set_depth_stencil_fbo(iface, pNewZStencil);
         }
+
+        if((!tmp && pNewZStencil) || (!pNewZStencil && tmp)) {
+            /* Swapping NULL / non NULL depth stencil affects the depth and tests */
+            IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_ZENABLE));
+            IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_STENCILENABLE));
+            IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_STENCILWRITEMASK));
+        }
     }
 
     return hr;
diff --git a/dlls/wined3d/state.c b/dlls/wined3d/state.c
index c56ce67..00f4876 100644
--- a/dlls/wined3d/state.c
+++ b/dlls/wined3d/state.c
@@ -105,6 +105,13 @@ static void state_lighting(DWORD state, IWineD3DStateBlockImpl *stateblock, Wine
 }
 
 static void state_zenable(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
+    /* No z test without depth stencil buffers */
+    if(stateblock->wineD3DDevice->stencilBufferTarget == NULL) {
+        glDisable(GL_DEPTH_TEST); /* This also disables z writing in gl */
+        checkGLcall("glDisable GL_DEPTH_TEST");
+        return;
+    }
+
     switch ((WINED3DZBUFFERTYPE) stateblock->renderState[WINED3DRS_ZENABLE]) {
         case WINED3DZB_FALSE:
             glDisable(GL_DEPTH_TEST);
@@ -611,6 +618,13 @@ state_stencil(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *c
     GLint depthFail_ccw = GL_KEEP;
     GLint stencilPass_ccw = GL_KEEP;
 
+    /* No stencil test without a stencil buffer */
+    if(stateblock->wineD3DDevice->stencilBufferTarget == NULL) {
+        glDisable(GL_STENCIL_TEST);
+        checkGLcall("glDisable GL_STENCIL_TEST");
+        return;
+    }
+
     if( stateblock->set.renderState[WINED3DRS_STENCILENABLE] )
         onesided_enable = stateblock->renderState[WINED3DRS_STENCILENABLE];
     if( stateblock->set.renderState[WINED3DRS_TWOSIDEDSTENCILMODE] )
@@ -664,7 +678,11 @@ state_stencil(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *c
 }
 
 static void state_stencilwrite(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
-    glStencilMask(stateblock->renderState[WINED3DRS_STENCILWRITEMASK]);
+    if(stateblock->wineD3DDevice->stencilBufferTarget) {
+        glStencilMask(stateblock->renderState[WINED3DRS_STENCILWRITEMASK]);
+    } else {
+        glStencilMask(0);
+    }
     checkGLcall("glStencilMask");
 }
 
-- 
1.4.4.3