WINTERMUTE: Implement proper 3d setup function

engines/wintermute/base/gfx/base_renderer.cpp

@@ -256,6 +256,11 @@ bool BaseRenderer::setup2D(bool Force) {
 	return STATUS_FAILED;
 }
 
+//////////////////////////////////////////////////////////////////////////
+bool BaseRenderer::setup3D(Camera3D* camera, bool force) {
+	return STATUS_FAILED;
+}
+
 
 //////////////////////////////////////////////////////////////////////////
 bool BaseRenderer::setupLines() {

engines/wintermute/base/gfx/base_renderer.h

@@ -41,6 +41,7 @@ class BaseActiveRect;
 class BaseObject;
 class BaseSurface;
 class BasePersistenceManager;
+class Camera3D;
 
 /**
  * @class BaseRenderer a common interface for the rendering portion of WME
@@ -120,6 +121,7 @@ public:
 	virtual bool forcedFlip() = 0;
 	virtual void initLoop();
 	virtual bool setup2D(bool force = false);
+	virtual bool setup3D(Camera3D* camera = nullptr, bool force = false);
 	virtual bool setupLines();
 
 	/**

engines/wintermute/base/gfx/opengl/base_render_opengl3d.cpp

@@ -256,8 +256,20 @@ bool BaseRenderOpenGL3D::setup2D(bool force) {
 	return true;
 }
 
-bool BaseRenderOpenGL3D::setup3D(bool force) {
+bool BaseRenderOpenGL3D::setup3D(Camera3D* camera, bool force) {
-	warning("BaseRenderOpenGL3D::setup3D not yet implemented");
+	if (!_state3D || force) {
+		_state3D = true;
+
+		glEnable(GL_DEPTH_TEST);
+		glEnable(GL_BLEND);
+		glAlphaFunc(GL_GEQUAL, 0x08);
+
+		// no culling for the moment
+		glDisable(GL_CULL_FACE);
+
+		setProjection();
+	}
+
 	return true;
 }
 

engines/wintermute/base/gfx/opengl/base_render_opengl3d.h

@@ -101,7 +101,7 @@ public:
 	bool forcedFlip() override;
 	void initLoop() override;
 	bool setup2D(bool force = false) override;
-	bool setup3D(bool force = false);
+	bool setup3D(Camera3D *camera, bool force = false) override;
 	bool setupLines() override;
 
 	/**