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using OpenTK.Graphics.OpenGL;
using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.OpenGL.Image;
using System;
namespace Ryujinx.Graphics.OpenGL
{
class Window : IWindow, IDisposable
{
private const int TextureCount = 3;
private readonly OpenGLRenderer _renderer;
private int _width;
private int _height;
private bool _sizeChanged;
private int _copyFramebufferHandle;
private int _stagingFrameBuffer;
private int[] _stagingTextures;
private int _currentTexture;
internal BackgroundContextWorker BackgroundContext { get; private set; }
internal bool ScreenCaptureRequested { get; set; }
public Window(OpenGLRenderer renderer)
{
_renderer = renderer;
_stagingTextures = new int[TextureCount];
}
public void Present(ITexture texture, ImageCrop crop, Action<object> swapBuffersCallback)
{
GL.Disable(EnableCap.FramebufferSrgb);
if (_sizeChanged)
{
if (_stagingFrameBuffer != 0)
{
GL.DeleteTextures(_stagingTextures.Length, _stagingTextures);
GL.DeleteFramebuffer(_stagingFrameBuffer);
}
CreateStagingFramebuffer();
_sizeChanged = false;
}
(int oldDrawFramebufferHandle, int oldReadFramebufferHandle) = ((Pipeline)_renderer.Pipeline).GetBoundFramebuffers();
CopyTextureToFrameBufferRGB(_stagingFrameBuffer, GetCopyFramebufferHandleLazy(), (TextureView)texture, crop, swapBuffersCallback);
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, oldReadFramebufferHandle);
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, oldDrawFramebufferHandle);
GL.Enable(EnableCap.FramebufferSrgb);
// Restore unpack alignment to 4, as performance overlays such as RTSS may change this to load their resources.
GL.PixelStore(PixelStoreParameter.UnpackAlignment, 4);
}
public void ChangeVSyncMode(bool vsyncEnabled) { }
private void CreateStagingFramebuffer()
{
_stagingFrameBuffer = GL.GenFramebuffer();
GL.GenTextures(_stagingTextures.Length, _stagingTextures);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, _stagingFrameBuffer);
foreach (var stagingTexture in _stagingTextures)
{
GL.BindTexture(TextureTarget.Texture2D, stagingTexture);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba8, _width, _height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, IntPtr.Zero);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0, TextureTarget.Texture2D, stagingTexture, 0);
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
public void SetSize(int width, int height)
{
_width = width;
_height = height;
_sizeChanged = true;
}
private void CopyTextureToFrameBufferRGB(int drawFramebuffer, int readFramebuffer, TextureView view, ImageCrop crop, Action<object> swapBuffersCallback)
{
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, drawFramebuffer);
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, readFramebuffer);
GL.FramebufferTexture2D(FramebufferTarget.DrawFramebuffer, FramebufferAttachment.ColorAttachment0, TextureTarget.Texture2D, _stagingTextures[_currentTexture], 0);
TextureView viewConverted = view.Format.IsBgr() ? _renderer.TextureCopy.BgraSwap(view) : view;
GL.FramebufferTexture(
FramebufferTarget.ReadFramebuffer,
FramebufferAttachment.ColorAttachment0,
viewConverted.Handle,
0);
GL.ReadBuffer(ReadBufferMode.ColorAttachment0);
GL.Disable(EnableCap.RasterizerDiscard);
GL.Disable(IndexedEnableCap.ScissorTest, 0);
GL.Clear(ClearBufferMask.ColorBufferBit);
int srcX0, srcX1, srcY0, srcY1;
float scale = view.ScaleFactor;
if (crop.Left == 0 && crop.Right == 0)
{
srcX0 = 0;
srcX1 = (int)(view.Width / scale);
}
else
{
srcX0 = crop.Left;
srcX1 = crop.Right;
}
if (crop.Top == 0 && crop.Bottom == 0)
{
srcY0 = 0;
srcY1 = (int)(view.Height / scale);
}
else
{
srcY0 = crop.Top;
srcY1 = crop.Bottom;
}
if (scale != 1f)
{
srcX0 = (int)(srcX0 * scale);
srcY0 = (int)(srcY0 * scale);
srcX1 = (int)Math.Ceiling(srcX1 * scale);
srcY1 = (int)Math.Ceiling(srcY1 * scale);
}
float ratioX = crop.IsStretched ? 1.0f : MathF.Min(1.0f, _height * crop.AspectRatioX / (_width * crop.AspectRatioY));
float ratioY = crop.IsStretched ? 1.0f : MathF.Min(1.0f, _width * crop.AspectRatioY / (_height * crop.AspectRatioX));
int dstWidth = (int)(_width * ratioX);
int dstHeight = (int)(_height * ratioY);
int dstPaddingX = (_width - dstWidth) / 2;
int dstPaddingY = (_height - dstHeight) / 2;
int dstX0 = crop.FlipX ? _width - dstPaddingX : dstPaddingX;
int dstX1 = crop.FlipX ? dstPaddingX : _width - dstPaddingX;
int dstY0 = crop.FlipY ? dstPaddingY : _height - dstPaddingY;
int dstY1 = crop.FlipY ? _height - dstPaddingY : dstPaddingY;
if (ScreenCaptureRequested)
{
CaptureFrame(srcX0, srcY0, srcX1, srcY1, view.Format.IsBgr(), crop.FlipX, crop.FlipY);
ScreenCaptureRequested = false;
}
GL.BlitFramebuffer(
srcX0,
srcY0,
srcX1,
srcY1,
dstX0,
dstY0,
dstX1,
dstY1,
ClearBufferMask.ColorBufferBit,
BlitFramebufferFilter.Linear);
// Remove Alpha channel
GL.ColorMask(false, false, false, true);
GL.ClearColor(0.0f, 0.0f, 0.0f, 1.0f);
GL.Clear(ClearBufferMask.ColorBufferBit);
for (int i = 0; i < Constants.MaxRenderTargets; i++)
{
((Pipeline)_renderer.Pipeline).RestoreComponentMask(i);
}
// Set clip control, viewport and the framebuffer to the output to placate overlays and OBS capture.
GL.ClipControl(ClipOrigin.LowerLeft, ClipDepthMode.NegativeOneToOne);
GL.Viewport(0, 0, _width, _height);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, drawFramebuffer);
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, _stagingFrameBuffer);
swapBuffersCallback((object)_stagingTextures[_currentTexture]);
_currentTexture = ++_currentTexture % _stagingTextures.Length;
((Pipeline)_renderer.Pipeline).RestoreClipControl();
((Pipeline)_renderer.Pipeline).RestoreScissor0Enable();
((Pipeline)_renderer.Pipeline).RestoreRasterizerDiscard();
((Pipeline)_renderer.Pipeline).RestoreViewport0();
if (viewConverted != view)
{
viewConverted.Dispose();
}
}
private int GetCopyFramebufferHandleLazy()
{
int handle = _copyFramebufferHandle;
if (handle == 0)
{
handle = GL.GenFramebuffer();
_copyFramebufferHandle = handle;
}
return handle;
}
public void InitializeBackgroundContext(IOpenGLContext baseContext)
{
BackgroundContext = new BackgroundContextWorker(baseContext);
}
public void CaptureFrame(int x, int y, int width, int height, bool isBgra, bool flipX, bool flipY)
{
long size = Math.Abs(4 * width * height);
byte[] bitmap = new byte[size];
GL.ReadPixels(x, y, width, height, isBgra ? PixelFormat.Bgra : PixelFormat.Rgba, PixelType.UnsignedByte, bitmap);
_renderer.OnScreenCaptured(new ScreenCaptureImageInfo(width, height, isBgra, bitmap, flipX, flipY));
}
public void Dispose()
{
BackgroundContext.Dispose();
if (_copyFramebufferHandle != 0)
{
GL.DeleteFramebuffer(_copyFramebufferHandle);
_copyFramebufferHandle = 0;
}
if (_stagingFrameBuffer != 0)
{
GL.DeleteTextures(_stagingTextures.Length, _stagingTextures);
GL.DeleteFramebuffer(_stagingFrameBuffer);
_stagingFrameBuffer = 0;
_stagingTextures = null;
}
}
}
}
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