gsdx-d3d11: Set maximum allowed texture size to d3d10 limits which is…

… 8192.

Should prevent any issues if we ever go over the limit.

plugins/GSdx/Renderers/DX11/GSDevice11.cpp

@@ -638,8 +638,8 @@ GSTexture* GSDevice11::CreateSurface(int type, int w, int h, int format)
 
 	memset(&desc, 0, sizeof(desc));
 
-	desc.Width = std::max(1, w); // texture min is 1 for dx
-	desc.Height = std::max(1, h);
+	desc.Width = std::max(1, std::min(w, 8192)); // Texture limit for D3D10 min 1, max 8192
+	desc.Height = std::max(1, std::min(h, 8192));
 	desc.Format = (DXGI_FORMAT)format;
 	desc.MipLevels = 1;
 	desc.ArraySize = 1;