public void BeginUI()
{
if (renderType == RenderType.World)
{
// Complete world rendering
Flush();
worldBuffer.Unbind();
// Render the world buffer into the UI buffer
screenBuffer.Bind();
var scale = Window.EffectiveWindowScale;
var bufferSize = new Size((int)(screenSprite.Bounds.Width / scale), (int)(-screenSprite.Bounds.Height / scale));
SpriteRenderer.SetAntialiasingPixelsPerTexel(Window.SurfaceSize.Height * 1f / worldSprite.Bounds.Height);
RgbaSpriteRenderer.DrawSprite(worldSprite, float3.Zero, new float2(bufferSize));
Flush();
SpriteRenderer.SetAntialiasingPixelsPerTexel(0);
}
else
{
// World rendering was skipped
BeginFrame();
screenBuffer.Bind();
}
renderType = RenderType.UI;
}
public void BeginFrame(int2 scroll, float zoom)
{
Context.Clear();
var surfaceSize = Window.SurfaceSize;
var surfaceBufferSize = surfaceSize.NextPowerOf2();
if (screenSprite == null || screenSprite.Sheet.Size != surfaceBufferSize)
{
if (screenBuffer != null)
{
screenBuffer.Dispose();
}
// Render the screen into a frame buffer to simplify reading back screenshots
screenBuffer = Context.CreateFrameBuffer(surfaceBufferSize, Color.FromArgb(0xFF, 0, 0, 0));
}
if (screenSprite == null || surfaceSize.Width != screenSprite.Bounds.Width || -surfaceSize.Height != screenSprite.Bounds.Height)
{
var screenSheet = new Sheet(SheetType.BGRA, screenBuffer.Texture);
// Flip sprite in Y to match OpenGL's bottom-left origin
var screenBounds = Rectangle.FromLTRB(0, surfaceSize.Height, surfaceSize.Width, 0);
screenSprite = new Sprite(screenSheet, screenBounds, TextureChannel.RGBA);
}
screenBuffer.Bind();
SetViewportParams(scroll, zoom);
}
public void BeginWorld(Rectangle worldViewport)
{
if (renderType != RenderType.None)
{
throw new InvalidOperationException("BeginWorld called with renderType = {0}, expected RenderType.None.".F(renderType));
}
BeginFrame();
var worldBufferSize = worldViewport.Size.NextPowerOf2();
if (worldSprite == null || worldSprite.Sheet.Size != worldBufferSize)
{
if (worldBuffer != null)
{
worldBuffer.Dispose();
}
// Render the world into a framebuffer at 1:1 scaling to allow the depth buffer to match the artwork at all zoom levels
worldBuffer = Context.CreateFrameBuffer(worldBufferSize);
// Pixel art scaling mode is a customized bilinear sampling
worldBuffer.Texture.ScaleFilter = TextureScaleFilter.Linear;
}
if (worldSprite == null || worldViewport.Size != worldSprite.Bounds.Size)
{
var worldSheet = new Sheet(SheetType.BGRA, worldBuffer.Texture);
worldSprite = new Sprite(worldSheet, new Rectangle(int2.Zero, worldViewport.Size), TextureChannel.RGBA);
}
worldBuffer.Bind();
if (worldBufferSize != lastWorldBufferSize || lastWorldViewport != worldViewport)
{
var depthScale = worldBufferSize.Height / (worldBufferSize.Height + depthMargin);
WorldSpriteRenderer.SetViewportParams(worldBufferSize, depthScale, depthScale / 2, worldViewport.Location);
WorldModelRenderer.SetViewportParams(worldBufferSize, worldViewport.Location);
lastWorldViewport = worldViewport;
lastWorldBufferSize = worldBufferSize;
}
renderType = RenderType.World;
}
public void BeginWorld(Rectangle worldViewport)
{
if (renderType != RenderType.None)
{
throw new InvalidOperationException($"BeginWorld called with renderType = {renderType}, expected RenderType.None.");
}
BeginFrame();
if (worldSheet == null)
{
throw new InvalidOperationException($"BeginWorld called before SetMaximumViewportSize has been set.");
}
if (worldSprite == null || worldViewport.Size != lastWorldViewportSize)
{
// Downscale world rendering if needed to fit within the framebuffer
var vw = worldViewport.Size.Width;
var vh = worldViewport.Size.Height;
var bw = worldSheet.Size.Width;
var bh = worldSheet.Size.Height;
worldDownscaleFactor = 1;
while (vw / worldDownscaleFactor > bw || vh / worldDownscaleFactor > bh)
{
worldDownscaleFactor++;
}
var s = new Size(vw / worldDownscaleFactor, vh / worldDownscaleFactor);
worldSprite = new Sprite(worldSheet, new Rectangle(int2.Zero, s), TextureChannel.RGBA);
lastWorldViewportSize = worldViewport.Size;
}
worldBuffer.Bind();
if (lastWorldViewport != worldViewport)
{
WorldSpriteRenderer.SetViewportParams(worldSheet.Size, worldDownscaleFactor, depthMargin, worldViewport.Location);
WorldModelRenderer.SetViewportParams(worldSheet.Size, worldViewport.Location);
lastWorldViewport = worldViewport;
}
renderType = RenderType.World;
}
