//Main Methods
protected override void OnRenderFrame(FrameEventArgs e)
{
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
uModelLocation = GL.GetUniformLocation(mShader.ShaderProgramID, "uModel");
float viewDistance = 200;
//Resets matrix
int uProjectionLocation = GL.GetUniformLocation(mShader.ShaderProgramID, "uProjection");
Matrix4 projection = Matrix4.CreatePerspectiveFieldOfView(1, (float)ClientRectangle.Width / ClientRectangle.Height, 0.5f, viewDistance);
GL.UniformMatrix4(uProjectionLocation, true, ref projection);
//Renders the objects to the screen buffer
Frame_Buffer.Unbind_Buffer();
Render_Objects();
GL.BindVertexArray(0);
this.SwapBuffers();
projection = Matrix4.CreatePerspectiveFieldOfView(1, Bottom_Portal.mWidth / Bottom_Portal.mHeight, 0.5f, viewDistance);
GL.UniformMatrix4(uProjectionLocation, true, ref projection);
//Renders to Texture for the portal
RenderToTexture_Bottom_Portal();
RenderToTexture_Top_Portal();
} //Draw
//Renders to Texture
private void RenderToTexture_Bottom_Portal()
{
//Bind
Bottom_Portal.Bind_Buffer();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
Portal_ViewportUpdate();
GL.Enable(EnableCap.CullFace);
int uView = GL.GetUniformLocation(mShader.ShaderProgramID, "uView");
Matrix4 previousView = mView;
mView = mTopPortalView;
GL.UniformMatrix4(uView, true, ref mView);
camera.UpdateLightPositions();
Material.silver.Assign_Material();
BrickWall.MakeActive();
//Draws Cubes
GL.BindVertexArray(mVAO[1]);
DrawTopBox(mBoxMatrix * mGroundModel * Level.Level0);
DrawBox(mBoxMatrix * mGroundModel * Level.Level1);
DrawBox(mBoxMatrix * mGroundModel * Level.Level2);
DrawBottomBox(mBoxMatrix * mGroundModel * Level.Level3);
//Draws the Spheres
GL.BindVertexArray(mVAO[0]);
foreach (Sphere s in Sphere.DrawList)
{
s.Draw();
}
//This stops the back of cylinders from not being drawn
GL.Disable(EnableCap.CullFace);
//Draws Cylinders
GL.BindVertexArray(mVAO[2]);
foreach (Cylinder c in Level.Level1_Cylinders) //LEVEL 1
{
Level.Draw_Cylinders(c, Level.Level1);
}
mView = previousView;
GL.UniformMatrix4(uView, true, ref mView);
//Unbind
Frame_Buffer.Unbind_Buffer();
}
private void RenderToTexture_Top_Portal()
{
//Bind
Top_Portal.Bind_Buffer();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
Portal_ViewportUpdate();
GL.Enable(EnableCap.CullFace);
int uView = GL.GetUniformLocation(mShader.ShaderProgramID, "uView");
Matrix4 previousView = mView;
mView = mBottomPortalView;
GL.UniformMatrix4(uView, true, ref mView);
camera.UpdateLightPositions();
//Draws the Spheres
GL.BindVertexArray(mVAO[0]);
foreach (Sphere s in Sphere.DrawList)
{
s.Draw();
}
GL.BindVertexArray(mVAO[1]);
DrawTopBox(mBoxMatrix * mGroundModel * Level.Level0);
DrawBox(mBoxMatrix * mGroundModel * Level.Level1);
DrawBox(mBoxMatrix * mGroundModel * Level.Level2);
DrawBottomBox(mBoxMatrix * mGroundModel * Level.Level3);
//SoD
GL.BindVertexArray(mVAO[0]);
Level.DoomSphere.Apply_MaterialValues();
Matrix4 DoomSphereLocation = Matrix4.CreateScale(Level.DoomSphere.mRadius) * Matrix4.CreateTranslation(Level.DoomSphere.mPosition) * Level.Level3 * mGroundModel;
GL.UniformMatrix4(uModelLocation, true, ref DoomSphereLocation);
GL.DrawElements(BeginMode.Triangles, mSphereModel.Indices.Length, DrawElementsType.UnsignedInt, 0);
mView = previousView;
GL.UniformMatrix4(uView, true, ref mView);
//Unbind
Frame_Buffer.Unbind_Buffer();
}