module evael.renderer.graphics_command;

public
{
    import evael.renderer.graphics_buffer;
    import evael.renderer.pipeline;
    import evael.renderer.texture;
    import evael.renderer.enums;
}

import evael.utils.color;
import evael.lib.memory;

/**
 * Command is the base class for all the API commands.
 */
abstract class GraphicsCommand : NoGCClass
{
    protected Pipeline m_pipeline;

    protected VertexBuffer m_vertexBuffer;
    protected IndexBuffer m_indexBuffer;

    /**
     * Command constructor.
     */
    @nogc
    public this(Pipeline pipeline)
    {
        this.m_pipeline = pipeline;

        this.verifyPipeline();
    }

    /**
     * Command destructor.
     */
    @nogc
    public ~this()
    {
    }

    /**
     * Specifies clear values for the color buffers.
     * Params:
     *		color : clear color
     */
    @nogc
    public void clearColor(in Color color = Color.Black) const nothrow;
    
    @nogc
    protected void verifyPipeline() const
    {
        assert(this.m_pipeline.shader !is null);
    }

    /**
     * Properties.
     */
    @nogc
    @property nothrow
    {
        public void pipeline(Pipeline value) 
        {
            this.m_pipeline = value;
        }

        public void vertexBuffer(VertexBuffer value)
        {
            this.m_vertexBuffer = value;
        }

        public void indexBuffer(IndexBuffer value)
        {
            this.m_indexBuffer = value;
        }
    }
}