Added shadow maps

src/Character.h

@@ -34,6 +34,8 @@ public:
     void setTarget(const Eigen::Vector3f& target,
                    std::function<void()> onArrived = nullptr);
     void draw(Renderer& renderer);
+    void drawShadowDepth(Renderer& renderer);
+    void drawWithShadow(Renderer& renderer, const Eigen::Matrix4f& lightFromCamera, GLuint shadowMapTex, const Eigen::Vector3f& lightDirCamera);
 
     // Public: read by Game for camera tracking and ray-cast origin
     Eigen::Vector3f position = Eigen::Vector3f(0.f, 0.f, 0.f);
@@ -97,6 +99,12 @@ private:
     void prepareGpuSkinningVBOs(AnimationData& anim);
     // GPU skinning: draw using shader-based skinning
     void drawGpuSkinning(Renderer& renderer);
+    // Shadow: draw into depth map (no texture, no projection push)
+    void drawShadowDepthGpuSkinning(Renderer& renderer);
+    void drawShadowDepthCpu(Renderer& renderer);
+    // Shadow: draw with shadow-aware shaders
+    void drawGpuSkinningWithShadow(Renderer& renderer, const Eigen::Matrix4f& lightFromCamera, GLuint shadowMapTex, const Eigen::Vector3f& lightDirCamera);
+    void drawCpuWithShadow(Renderer& renderer, const Eigen::Matrix4f& lightFromCamera, GLuint shadowMapTex, const Eigen::Vector3f& lightDirCamera);
 };
 
 } // namespace ZL