ICustomDrawable Interface Reference

Interface for objects with specialized rendering requirements. More...

#include <IDrawable.h>

Inheritance diagram for ICustomDrawable:

Collaboration diagram for ICustomDrawable:

Public Member Functions
virtual void	draw () const =0
	Performs custom rendering for this object.
Public Member Functions inherited from IDrawable
virtual	~IDrawable ()=default
	Virtual destructor for proper cleanup of derived classes.
virtual Shader *	getShader () const =0
	Gets the shader used to render this object.
virtual Mesh *	getMesh () const =0
	Gets the mesh geometry for this object.
virtual uint32_t	getObjectID () const =0
	Gets the unique identifier for this object.

Detailed Description

Interface for objects with specialized rendering requirements.

Objects implementing this interface have full control over their rendering process. This is used for objects that:

• Cannot be efficiently batched (e.g., Gizmos with dynamic geometry)
• Require special rendering state (e.g., depth testing disabled)
• Need custom draw logic (e.g., multiple passes, compute shaders)

Custom drawables bypass the instancing system and are rendered individually after all instanced objects.

Warning

Custom rendering has higher overhead than instanced rendering. Use IInstancedDrawable when possible.

Example usage:

class Gizmo : public ICustomDrawable {
    void draw() const override {
        glDisable(GL_DEPTH_TEST);
        shader->use();
        mesh->drawInstanced(handleInstances);
        glEnable(GL_DEPTH_TEST);
    }
};

See also

Scene::draw()

Gizmo

Definition at line 181 of file IDrawable.h.

Member Function Documentation

draw()

virtual void ICustomDrawable::draw ( ) const

pure virtual

Performs custom rendering for this object.

Implementations are responsible for:

• Binding appropriate shaders and setting uniforms
• Managing OpenGL state (depth testing, blending, etc.)
• Issuing draw calls (direct or instanced)
• Restoring OpenGL state if modified

This method is called after all instanced objects are rendered.

Note

The camera matrices uniform buffer is already bound when called.

See also

Scene::draw()

Implemented in Gizmo, Colliders, Forces, and PathTraces.

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The documentation for this interface was generated from the following file:

• src/graphics/core/IDrawable.h