#include "BasicBatch.h"

namespace charcoal
{
	namespace builtin
	{
		namespace basic
		{
			void Batch::setup_vao()
			{
				glBindBuffer(GL_ARRAY_BUFFER, m_vertex_vbo);
				glEnableVertexAttribArray(0);
				glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), NULL);
				glBindBuffer(GL_ARRAY_BUFFER, m_element_buffers[0]);
				glEnableVertexAttribArray(1);
				glEnableVertexAttribArray(2);
				glEnableVertexAttribArray(3);
				glEnableVertexAttribArray(4);
				glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, sizeof(Poseable), (void*)(0 * sizeof(vec4)));
				glVertexAttribPointer(2, 4, GL_FLOAT, GL_FALSE, sizeof(Poseable), (void*)(1 * sizeof(vec4)));
				glVertexAttribPointer(3, 4, GL_FLOAT, GL_FALSE, sizeof(Poseable), (void*)(2 * sizeof(vec4)));
				glVertexAttribPointer(4, 4, GL_FLOAT, GL_FALSE, sizeof(Poseable), (void*)(3 * sizeof(vec4)));

				glVertexAttribDivisor(0, 0); // Send the mesh data once
				glVertexAttribDivisor(1, 1); // Send the offset data for each instance drawn
				glVertexAttribDivisor(2, 1); // Send the offset data for each instance drawn
				glVertexAttribDivisor(3, 1); // Send the offset data for each instance drawn
				glVertexAttribDivisor(4, 1); // Send the offset data for each instance drawn
			}
		}
	}
}