/// <summary>
/// Render Method
/// </summary>
public void Render()
{
int wid2 = m_WindowWidth / 2;
// Draw demo 1 on the first half of the window
GL.Viewport(0, 0, wid2, m_WindowHeight);
m_Demo01.Render();
// Draw demo 2 on the second half of the window.
GL.Viewport(wid2, 0, wid2, m_WindowHeight);
m_Demo02.Render();
}
/// <summary>
/// Render
/// </summary>
public override void Render()
{
//
// First Render to our frame buffer.
//
// bind to our frame buffer
GL.BindFramebuffer(FramebufferTarget.Framebuffer, m_Fbo);
GL.Enable(EnableCap.DepthTest);
// we need to clear our frame buffer ourselves.
GL.ClearColor(0.0f, 0.0f, 0.0f, 1f);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
// render the triangle from the triangle demo onto our frame buffer.
m_TriangleDemo.OnResize(FRAME_BUFFER_DIM, FRAME_BUFFER_DIM);
m_TriangleDemo.Render();
//
// Now render the frame buffer texture to our screen.
//
// back to the standard frame buffer.
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.ClearColor(0.2f, 0.2f, 0.2f, 1f);
// ensure viewport set correctly.
OnResize(m_Width, m_Height);
// begin using the shader.
m_Shader.Begin();
// reset the model view matrix.
m_ModelViewMatrix = Matrix4.Identity;
// apply a rotation to the model view.
m_ModelViewMatrix = Matrix4.Mult(m_ModelViewMatrix, Matrix4.CreateRotationZ(MathHelper.DegreesToRadians(angle)));
m_ModelViewMatrix = Matrix4.Mult(m_ModelViewMatrix, Matrix4.CreateRotationY(MathHelper.DegreesToRadians(angle)));
m_Shader.UpdateProjectionMatrix(m_ProjectionMatrix);
m_Shader.UpdateModelViewMatrix(m_ModelViewMatrix);
// ensure vertex and tex coords attrib arrays are enabled.
GL.EnableVertexAttribArray(m_Shader.VertexAttribLocation);
GL.EnableVertexAttribArray(m_Shader.TextureCoordAttribLocation);
// set up where to find the data in the buffer.
GL.BindBuffer(BufferTarget.ArrayBuffer, m_CubBuffer);
GL.VertexAttribPointer(m_Shader.VertexAttribLocation, 3, VertexAttribPointerType.Float, true, sizeof(float) * 5, 0);
GL.VertexAttribPointer(m_Shader.TextureCoordAttribLocation, 2, VertexAttribPointerType.Float, true, sizeof(float) * 5, sizeof(float) * 3);
// set up to look at the Frame buffer texture.
m_Shader.SetTextureSlot(0);
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, m_FboColorTexture);
// draw the cube (made up of triangle strip)
GL.DrawArrays(BeginMode.TriangleStrip, 0, 14);
GL.BindTexture(TextureTarget.Texture2D, 0);
// finished with the shader.
m_Shader.End();
// increment our rotation
angle += 1;
if (angle > 360)
{
angle = 0f;
}
;
}
