public VertexArrayObject(BufferObject <TVerexType> vbo, BufferObject <TIndexType> ibo)
{
_id = GL.GenVertexArray();
Bind();
vbo.Bind();
ibo.Bind();
}
public SpriteBatch(JackApp jack, int batchSize = 1000)
{
_batchSize = batchSize;
_quadShader = Shader.FromStrings(_quadVertShaderSource, _quadFragmentShaderSource);
// the amount of quads times the size of a vertex times 4 vertices per quad
_indices = GenerateIndices(batchSize);
// make a dynamic vbo and set it's data to null
_quadVbo = new BufferObject <float>(_vertices, BufferTarget.ArrayBuffer, BufferUsageHint.DynamicDraw);
GL.BufferData(BufferTarget.ArrayBuffer, VerticesAmount * sizeof(float), IntPtr.Zero, BufferUsageHint.DynamicDraw);
_quadIbo = new BufferObject <int>(_indices, BufferTarget.ElementArrayBuffer);
// add descriptions for the vertices inside the vao
_quadVao = new VertexArrayObject <float, int>(_quadVbo, _quadIbo);
_quadVao.VertexAttribPointer(0, POSITION_SIZE, VertexAttribPointerType.Float, VertexSize, 0);
_quadVao.VertexAttribPointer(1, COLOR_SIZE, VertexAttribPointerType.Float, VertexSize, POSITION_SIZE);
_quadVao.VertexAttribPointer(2, TEX_COORDS_SIZE, VertexAttribPointerType.Float, VertexSize, POSITION_SIZE + COLOR_SIZE);
_quadVao.VertexAttribPointer(3, TEX_INDEX_SIZE, VertexAttribPointerType.Float, VertexSize, POSITION_SIZE + COLOR_SIZE + TEX_COORDS_SIZE);
JackApp.OnExit += Dispose;
}
