/// <summary>
/// Creates a cached shader for the specifed shader, using the specified shader enumeration
/// as a lookup key.
/// </summary>
private ShaderProgram CreateCachedShader(EverlookShader shader)
{
if (!Enum.IsDefined(typeof(EverlookShader), shader))
{
throw new ArgumentException("An unknown shader was passed to the rendering cache.", nameof(shader));
}
Log.Info($"Creating cached shader for \"{shader}\"");
ShaderProgram shaderProgram;
switch (shader)
{
case EverlookShader.Plain2D:
{
shaderProgram = new Plain2DShader();
break;
}
case EverlookShader.WorldModel:
{
shaderProgram = new WorldModelShader();
break;
}
case EverlookShader.BoundingBox:
{
shaderProgram = new BoundingBoxShader();
break;
}
case EverlookShader.GameModel:
{
shaderProgram = new GameModelShader();
break;
}
case EverlookShader.BaseGrid:
{
shaderProgram = new BaseGridShader();
break;
}
default:
{
throw new ArgumentOutOfRangeException
(
nameof(shader),
"No implemented shader class for this shader."
);
}
}
_shaderCache.Add(shader, shaderProgram);
return(shaderProgram);
}
/// <summary>
/// Initializes a new instance of the <see cref="RenderableBoundingBox"/> class. The bounds data is taken from
/// the given <see cref="Box"/>, and the world translation is set to <paramref name="transform"/>.
/// </summary>
/// <param name="boundingBox">The BoundingBox to get data from.</param>
/// <param name="transform">The world transform of the box.</param>
public RenderableBoundingBox(Box boundingBox, Transform transform)
{
this.BoundingBoxData = boundingBox;
this.LineColour = Color4.LimeGreen;
this.ActorTransform = transform;
this.BoxShader = RenderCache.Instance.GetShader(EverlookShader.BoundingBox) as BoundingBoxShader;
this.IsInitialized = false;
}
private void RenderBoundingBox(ModelGroup modelGroup, Matrix4 modelViewProjection, Color4 colour)
{
BoundingBoxShader boxShader = this.Cache.GetShader(EverlookShader.BoundingBox) as BoundingBoxShader;
if (boxShader == null)
{
throw new ShaderNullException(typeof(BoundingBoxShader));
}
boxShader.Enable();
boxShader.SetMVPMatrix(modelViewProjection);
boxShader.SetLineColour(colour);
GL.Disable(EnableCap.CullFace);
// Render the object
// Send the vertices to the shader
GL.EnableVertexAttribArray(0);
GL.BindBuffer(BufferTarget.ArrayBuffer, this.BoundingBoxVertexBufferLookup[modelGroup]);
GL.VertexAttribPointer
(
0,
3,
VertexAttribPointerType.Float,
false,
0,
0
);
// Bind the index buffer
GL.BindBuffer(BufferTarget.ElementArrayBuffer, this.BoundingBoxVertexIndexBufferID);
// Now draw the box
GL.DrawRangeElements
(
PrimitiveType.LineLoop,
0,
23,
24,
DrawElementsType.UnsignedByte,
new IntPtr(0)
);
GL.DisableVertexAttribArray(0);
}