charcoal/CharcoalBuiltin/SpriteBatch.h

#pragma once

#include <charcoal/Poseable2D.h>
#include <charcoal/TextureRenderable.h>

#include "PoseableBatch.h"

namespace charcoal
{
	namespace builtin
	{
		template <typename VertexType, typename IndexType, int position_offset, int uv_offset>
		class SpriteBatch : public PoseableBatch<VertexType, IndexType, TextureRenderable<VertexType, IndexType> >
		{
		public:
			// Note: This is VERY similar to builtin::textured::Batch
			// Note: Uses GL_TEXTURE0. The uniform for this texture should be set in the scene before rendering.
			using PoseableBatch<VertexType, IndexType, TextureRenderable<VertexType, IndexType> >::PoseableBatch;

			void preprender() const override
			{
				// Note: Uses GL_TEXTURE0. The uniform for this texture should be set in the scene.
				glActiveTexture(GL_TEXTURE0);
				glBindTexture(GL_TEXTURE_2D, charcoal::Batch<VertexType, IndexType, 1, TextureRenderable<VertexType, IndexType> >::m_p_renderable->get_texture()->get_texture());
				glBindSampler(0, charcoal::Batch<VertexType, IndexType, 1, TextureRenderable<VertexType, IndexType> >::m_p_renderable->get_sampler()->get_sampler());
			}
		};
	}
}