internal static Texture2D ApplyEffects(Texture2D texture, Queue <Effect> effects)
{
// If there are no effects then return a new sprite with the texture attached.
if (effects.Count == 0)
{
return(texture);
}
// We are going to have to create a new RenderTarget2D, and then draw the texture multiple times on said render target in order to apply every effect.
float x = texture.Width * 0.5f;
float y = -texture.Height * 0.5f;
Camera camera =
new OrthographicCamera()
.SetProjection(texture.Width, texture.Height, 0.5f, 2)
.SetPosition(x, y, 1);
// In order to apply multiple effects, and avoid weird visual artifacts, we need to create a RenderTarget2D for each effect.
RenderTarget2D[] renderTargets = new RenderTarget2D[effects.Count];
for (int i = 0; i < renderTargets.Length; i++)
{
renderTargets[i] = new RenderTarget2D(graphicsDevice, texture.Width, texture.Height);
}
int totalEffects = effects.Count;
for (int i = 0; i < totalEffects; i++)
{
graphicsDevice.SetRenderTarget(renderTargets[i]);
graphicsDevice.Clear(Color.Transparent);
Sprite sprite = new Sprite()
{
// The first pass starts with the initial texture. Every pass after that will use the last render target (which means the effects will accumulate).
Texture = i == 0 ? texture : renderTargets[i - 1],
RenderOptions = new RenderOptions()
{
Effect = effects.Dequeue()
}
};
Sketch.DrawSprite(sprite, camera);
graphicsDevice.SetRenderTarget(null);
}
// Dispose all render targets except for the last one.
for (int i = 0; i < renderTargets.Length - 1; i++)
{
renderTargets[i].Dispose();
}
// We cannot dispose of the last render target just yet. Instead we are going to have to add it to a list, and deal with it later.
Decomission(renderTargets[^ 1]);
static DebugManager()
{
camera = new OrthographicCamera()
.SetProjection(WindowManager.WindowWidth, WindowManager.WindowHeight, 0.25f, 8);
camera.SetPosition(WindowManager.WindowWidth * 0.5f, -WindowManager.WindowHeight * 0.5f, 1);
WindowManager.WindowResize += HandleResize;
font = AssetManager.GetFont("Relatus_Probity");
fontShader = new BMFontShader();
}
internal static void Draw()
{
graphicsDevice.Clear(Color.Black);
float x = WindowManager.WindowWidth * 0.5f;
float y = -WindowManager.WindowHeight * 0.5f;
Camera camera = new OrthographicCamera()
.SetProjection(WindowManager.WindowWidth, WindowManager.WindowHeight, 0.5f, 2)
.SetPosition(x, y, 1);
if (effects.Count == 0)
{
// Draw all the saved RenderTargets.
Sketch.SpriteBatcher
.AttachCamera(camera)
.SetBatchExecution(batchExecution)
.Begin()
.AddRange(layers)
.End();
}
else
{
// We need flatten all the layers into a single layer.
RenderTarget2D flatten = new RenderTarget2D(graphicsDevice, WindowManager.WindowWidth, WindowManager.WindowHeight);
graphicsDevice.SetRenderTarget(flatten);
graphicsDevice.Clear(Color.Transparent);
Sketch.SpriteBatcher
.AttachCamera(camera)
.SetBatchExecution(batchExecution)
.Begin()
.AddRange(layers)
.End();
graphicsDevice.SetRenderTarget(null);
// Now that we have a single texture to work with we can apply all of the effects to said texture.
Sprite sprite = new Sprite()
{
Texture = ApplyEffects(flatten, effects)
};
Sketch.DrawSprite(sprite, camera);
flatten.Dispose();
}
// Clean up.
for (int i = 0; i < decommissioned.Count; i++)
{
decommissioned[i].Dispose();
}
for (int i = 0; i < layers.Count; i++)
{
layers[i].Texture.Dispose();
}
decommissioned.Clear();
layers.Clear();
}