How do you create a orthographic worldviewprojection for draw

6

Ah got it.

yposition has to be added negative though.

private void CameraPerSpriteBatchOrthographic()
        {
            view = Matrix.Identity;
            projection = Matrix.CreateOrthographic(GraphicsDevice.Viewport.Width, GraphicsDevice.Viewport.Height, -.5f, -1f);
        }
public void DrawEffectAOrtho(float xpos, float ypos, float width, float height)
        {
            world = Matrix.CreateScale(new Vector3(width, height, 1f));
            world.Translation = new Vector3(xpos, -ypos, 1f);
            //SetWorldPositon(xpos, ypos, zpos);
            worldviewprojection = world * view * projection;
            TestEffectA.Parameters["gworldviewprojection"].SetValue(worldviewprojection);

            JustOnce();

            foreach (EffectPass pass in TestEffectA.CurrentTechnique.Passes)
            {
                pass.Apply();
                GraphicsDevice.DrawUserIndexedPrimitives(PrimitiveType.TriangleList, vertices, 0, 4, indices, 0, 2);
            }
        }

Orthographictest01_zps0httzim3.png1024×630 378 KB

Now i just wanna get the matrixs on the gpu.
And be able to alter the vertices individually on the gpu as well in the vertex shader, which i have no idea how to do.