public void Draw()
{
if (updated)
{
UpdateBuffer();
updated = false;
}
GLStates.ActiveTexture(TextureUnit.Texture0);
GLStates.BindTexture(TextureTarget.Texture2D, TiledTexture.TextureId);
GLStates.BindBuffer(BufferTarget.ElementArrayBuffer, Quad.IBO);
GLStates.UseProgram(program.ProgramId);
GLStates.BindBuffer(BufferTarget.ArrayBuffer, Quad.VBO);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("vertex_position"));
GL.VertexAttribPointer(program.GetAttribLocation("vertex_position"), 2, VertexAttribPointerType.Float, false, 0, 0);
if (BackColor)
{
GLStates.BindBuffer(BufferTarget.ArrayBuffer, tileBO);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("tex_position"));
GL.VertexAttribPointer(program.GetAttribLocation("tex_position"), 2, VertexAttribPointerType.Float, false, 10 * sizeof(float), 0);
GL.VertexAttribDivisor(program.GetAttribLocation("tex_position"), 1);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("vx_color"));
GL.VertexAttribPointer(program.GetAttribLocation("vx_color"), 4, VertexAttribPointerType.Float, false, 10 * sizeof(float), 2 * sizeof(float));
GL.VertexAttribDivisor(program.GetAttribLocation("vx_color"), 1);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("vx_back_color"));
GL.VertexAttribPointer(program.GetAttribLocation("vx_back_color"), 4, VertexAttribPointerType.Float, false, 10 * sizeof(float), 6 * sizeof(float));
GL.VertexAttribDivisor(program.GetAttribLocation("vx_back_color"), 1);
}
else
{
GLStates.BindBuffer(BufferTarget.ArrayBuffer, tileBO);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("tex_position"));
GL.VertexAttribPointer(program.GetAttribLocation("tex_position"), 2, VertexAttribPointerType.Float, false, 6 * sizeof(float), 0);
GL.VertexAttribDivisor(program.GetAttribLocation("tex_position"), 1);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("vx_color"));
GL.VertexAttribPointer(program.GetAttribLocation("vx_color"), 4, VertexAttribPointerType.Float, false, 6 * sizeof(float), 2 * sizeof(float));
GL.VertexAttribDivisor(program.GetAttribLocation("vx_color"), 1);
}
GL.DrawElementsInstanced(PrimitiveType.Triangles, 6, DrawElementsType.UnsignedByte, IntPtr.Zero, drawCount);
}
public void Draw()
{
UpdateBuffer();
GLStates.Enable(EnableCap.Blend);
GLStates.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GLStates.ActiveTexture(TextureUnit.Texture0);
GLStates.BindTexture(TextureTarget.Texture2D, TiledTexture.TextureId);
GLStates.BindBuffer(BufferTarget.ElementArrayBuffer, Quad.IBO);
GLStates.UseProgram(program.ProgramId);
GLStates.BindBuffer(BufferTarget.ArrayBuffer, Quad.VBO);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("vertex_position"));
GL.VertexAttribPointer(program.GetAttribLocation("vertex_position"), 2, VertexAttribPointerType.Float, false, 0, 0);
GLStates.BindBuffer(BufferTarget.ArrayBuffer, bufferObject.Id);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("sprite_position"));
GL.VertexAttribPointer(program.GetAttribLocation("sprite_position"), 2, VertexAttribPointerType.Float, false, 13 * sizeof(float), 0);
GL.VertexAttribDivisor(program.GetAttribLocation("sprite_position"), 1);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("size"));
GL.VertexAttribPointer(program.GetAttribLocation("size"), 2, VertexAttribPointerType.Float, false, 13 * sizeof(float), 2 * sizeof(float));
GL.VertexAttribDivisor(program.GetAttribLocation("size"), 1);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("tex_position"));
GL.VertexAttribPointer(program.GetAttribLocation("tex_position"), 2, VertexAttribPointerType.Float, false, 13 * sizeof(float), 4 * sizeof(float));
GL.VertexAttribDivisor(program.GetAttribLocation("tex_position"), 1);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("scale"));
GL.VertexAttribPointer(program.GetAttribLocation("scale"), 2, VertexAttribPointerType.Float, false, 13 * sizeof(float), 6 * sizeof(float));
GL.VertexAttribDivisor(program.GetAttribLocation("scale"), 1);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("rotation"));
GL.VertexAttribPointer(program.GetAttribLocation("rotation"), 1, VertexAttribPointerType.Float, false, 13 * sizeof(float), 8 * sizeof(float));
GL.VertexAttribDivisor(program.GetAttribLocation("rotation"), 1);
GLStates.EnableVertexAttribArray(program.GetAttribLocation("vx_color"));
GL.VertexAttribPointer(program.GetAttribLocation("vx_color"), 4, VertexAttribPointerType.Float, false, 13 * sizeof(float), 9 * sizeof(float));
GL.VertexAttribDivisor(program.GetAttribLocation("vx_color"), 1);
GL.DrawElementsInstanced(PrimitiveType.Triangles, 6, DrawElementsType.UnsignedByte, IntPtr.Zero, Sprites.Count);
}