mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-20 15:48:43 +02:00
249 lines
7.1 KiB
C#
249 lines
7.1 KiB
C#
using OpenTK.Graphics.OpenGL;
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using Ryujinx.Graphics.GAL;
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using System;
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using System.Collections.Generic;
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namespace Ryujinx.Graphics.OpenGL
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{
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class Window : IWindow
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{
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private const int NativeWidth = 1280;
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private const int NativeHeight = 720;
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private int _width = 1280;
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private int _height = 720;
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private int _blitFramebufferHandle;
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private int _copyFramebufferHandle;
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private int _screenTextureHandle;
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private TextureReleaseCallback _release;
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private struct PresentationTexture
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{
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public TextureView Texture { get; }
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public ImageCrop Crop { get; }
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public object Context { get; }
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public PresentationTexture(TextureView texture, ImageCrop crop, object context)
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{
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Texture = texture;
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Crop = crop;
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Context = context;
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}
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}
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private Queue<PresentationTexture> _textures;
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public Window()
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{
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_textures = new Queue<PresentationTexture>();
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}
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public void Present()
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{
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GL.Disable(EnableCap.FramebufferSrgb);
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CopyTextureFromQueue();
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int oldReadFramebufferHandle = GL.GetInteger(GetPName.ReadFramebufferBinding);
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int oldDrawFramebufferHandle = GL.GetInteger(GetPName.DrawFramebufferBinding);
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GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, 0);
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GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, GetCopyFramebufferHandleLazy());
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GL.ReadBuffer(ReadBufferMode.ColorAttachment0);
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GL.Clear(ClearBufferMask.ColorBufferBit);
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GL.BlitFramebuffer(
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0,
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0,
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1280,
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720,
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0,
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0,
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1280,
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720,
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ClearBufferMask.ColorBufferBit,
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BlitFramebufferFilter.Linear);
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GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, oldReadFramebufferHandle);
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GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, oldDrawFramebufferHandle);
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GL.Enable(EnableCap.FramebufferSrgb);
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}
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private void CopyTextureFromQueue()
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{
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if (!_textures.TryDequeue(out PresentationTexture presentationTexture))
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{
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return;
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}
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TextureView texture = presentationTexture.Texture;
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ImageCrop crop = presentationTexture.Crop;
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object context = presentationTexture.Context;
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int oldReadFramebufferHandle = GL.GetInteger(GetPName.ReadFramebufferBinding);
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int oldDrawFramebufferHandle = GL.GetInteger(GetPName.DrawFramebufferBinding);
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GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, GetCopyFramebufferHandleLazy());
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GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, GetBlitFramebufferHandleLazy());
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GL.FramebufferTexture(
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FramebufferTarget.ReadFramebuffer,
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FramebufferAttachment.ColorAttachment0,
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texture.Handle,
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0);
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GL.ReadBuffer(ReadBufferMode.ColorAttachment0);
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GL.Clear(ClearBufferMask.ColorBufferBit);
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int srcX0, srcX1, srcY0, srcY1;
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if (crop.Left == 0 && crop.Right == 0)
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{
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srcX0 = 0;
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srcX1 = texture.Width;
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}
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else
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{
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srcX0 = crop.Left;
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srcX1 = crop.Right;
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}
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if (crop.Top == 0 && crop.Bottom == 0)
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{
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srcY0 = 0;
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srcY1 = texture.Height;
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}
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else
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{
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srcY0 = crop.Top;
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srcY1 = crop.Bottom;
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}
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float ratioX = MathF.Min(1f, (_height * (float)NativeWidth) / ((float)NativeHeight * _width));
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float ratioY = MathF.Min(1f, (_width * (float)NativeHeight) / ((float)NativeWidth * _height));
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int dstWidth = (int)(_width * ratioX);
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int dstHeight = (int)(_height * ratioY);
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int dstPaddingX = (_width - dstWidth) / 2;
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int dstPaddingY = (_height - dstHeight) / 2;
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int dstX0 = crop.FlipX ? _width - dstPaddingX : dstPaddingX;
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int dstX1 = crop.FlipX ? dstPaddingX : _width - dstPaddingX;
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int dstY0 = crop.FlipY ? dstPaddingY : _height - dstPaddingY;
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int dstY1 = crop.FlipY ? _height - dstPaddingY : dstPaddingY;
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GL.BlitFramebuffer(
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srcX0,
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srcY0,
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srcX1,
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srcY1,
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dstX0,
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dstY0,
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dstX1,
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dstY1,
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ClearBufferMask.ColorBufferBit,
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BlitFramebufferFilter.Linear);
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GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, oldReadFramebufferHandle);
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GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, oldDrawFramebufferHandle);
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texture.Release();
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Release(context);
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}
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public void QueueTexture(ITexture texture, ImageCrop crop, object context)
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{
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if (texture == null)
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{
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Release(context);
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return;
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}
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TextureView textureView = (TextureView)texture;
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textureView.Acquire();
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_textures.Enqueue(new PresentationTexture(textureView, crop, context));
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}
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public void RegisterTextureReleaseCallback(TextureReleaseCallback callback)
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{
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_release = callback;
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}
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private void Release(object context)
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{
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if (_release != null)
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{
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_release(context);
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}
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}
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private int GetBlitFramebufferHandleLazy()
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{
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int handle = _blitFramebufferHandle;
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if (handle == 0)
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{
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handle = GL.GenFramebuffer();
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_blitFramebufferHandle = handle;
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}
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return handle;
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}
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private int GetCopyFramebufferHandleLazy()
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{
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int handle = _copyFramebufferHandle;
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if (handle == 0)
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{
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int textureHandle = GL.GenTexture();
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GL.BindTexture(TextureTarget.Texture2D, textureHandle);
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GL.TexImage2D(
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TextureTarget.Texture2D,
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0,
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PixelInternalFormat.Rgba8,
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1280,
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720,
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0,
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PixelFormat.Rgba,
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PixelType.UnsignedByte,
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IntPtr.Zero);
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handle = GL.GenFramebuffer();
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GL.BindFramebuffer(FramebufferTarget.Framebuffer, handle);
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GL.FramebufferTexture(
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FramebufferTarget.Framebuffer,
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FramebufferAttachment.ColorAttachment0,
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textureHandle,
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0);
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_screenTextureHandle = textureHandle;
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_copyFramebufferHandle = handle;
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}
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return handle;
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}
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}
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}
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