fix voodoo3 errmsg by not requiring unneeded caps bits

panda/src/dxgsg/dxGraphicsStateGuardian.cxx

@@ -395,12 +395,16 @@ init_dx(  LPDIRECTDRAW7		context,
   if(((dx_decal_type==GDT_blend)||(dx_decal_type==GDT_mask)) && !(D3DDevDesc.dpcTriCaps.dwMiscCaps & D3DPMISCCAPS_MASKZ))
          dxgsg_cat.error() << "dx-decal-type mask impossible to implement, no hardware support for Z-masking, decals will not appear correctly\n";
 
-#define REQUIRED_BLENDCAPS (D3DPBLENDCAPS_ZERO|D3DPBLENDCAPS_ONE|D3DPBLENDCAPS_SRCCOLOR|D3DPBLENDCAPS_INVSRCCOLOR| \
-                            D3DPBLENDCAPS_SRCALPHA|D3DPBLENDCAPS_INVSRCALPHA | D3DPBLENDCAPS_DESTALPHA|D3DPBLENDCAPS_INVDESTALPHA|D3DPBLENDCAPS_DESTCOLOR|D3DPBLENDCAPS_INVDESTCOLOR)
+//#define REQUIRED_BLENDCAPS (D3DPBLENDCAPS_ZERO|D3DPBLENDCAPS_ONE|D3DPBLENDCAPS_SRCCOLOR|D3DPBLENDCAPS_INVSRCCOLOR| \
+//                            D3DPBLENDCAPS_SRCALPHA|D3DPBLENDCAPS_INVSRCALPHA | D3DPBLENDCAPS_DESTALPHA|D3DPBLENDCAPS_INVDESTALPHA|D3DPBLENDCAPS_DESTCOLOR|D3DPBLENDCAPS_INVDESTCOLOR)
+// voodoo3 doesnt support commented out ones, & we dont need them now
+                            
+#define REQUIRED_BLENDCAPS (D3DPBLENDCAPS_ZERO|D3DPBLENDCAPS_ONE|  /*D3DPBLENDCAPS_SRCCOLOR|D3DPBLENDCAPS_INVSRCCOLOR| */ \
+                            D3DPBLENDCAPS_SRCALPHA|D3DPBLENDCAPS_INVSRCALPHA /* | D3DPBLENDCAPS_DESTALPHA|D3DPBLENDCAPS_INVDESTALPHA|D3DPBLENDCAPS_DESTCOLOR|D3DPBLENDCAPS_INVDESTCOLOR*/)
 
   if(((D3DDevDesc.dpcTriCaps.dwSrcBlendCaps & REQUIRED_BLENDCAPS)!=REQUIRED_BLENDCAPS) ||
      ((D3DDevDesc.dpcTriCaps.dwDestBlendCaps & REQUIRED_BLENDCAPS)!=REQUIRED_BLENDCAPS)) {
-         dxgsg_cat.error() << "device is missing alpha blending capabilities, blending may not work correctly\n";
+         dxgsg_cat.error() << "device is missing alpha blending capabilities, blending may not work correctly: SrcBlendCaps: "<< (void*) D3DDevDesc.dpcTriCaps.dwSrcBlendCaps << "  DestBlendCaps: "<< (void*) D3DDevDesc.dpcTriCaps.dwDestBlendCaps << endl;
   }
 
   if(!(D3DDevDesc.dpcTriCaps.dwTextureCaps & D3DPTEXTURECAPS_TRANSPARENCY)) {