From 1876b346fea647e8284a66bb6d62c38801035cff Mon Sep 17 00:00:00 2001
From: gdk <gab.dark.100@gmail.com>
Date: Sun, 13 Oct 2019 03:02:07 -0300
Subject: Initial work
---
Ryujinx.Graphics.OpenGL/Framebuffer.cs | 116 +++++++++++++++++++++++++++++++++
1 file changed, 116 insertions(+)
create mode 100644 Ryujinx.Graphics.OpenGL/Framebuffer.cs
(limited to 'Ryujinx.Graphics.OpenGL/Framebuffer.cs')
diff --git a/Ryujinx.Graphics.OpenGL/Framebuffer.cs b/Ryujinx.Graphics.OpenGL/Framebuffer.cs
new file mode 100644
index 00000000..40913009
--- /dev/null
+++ b/Ryujinx.Graphics.OpenGL/Framebuffer.cs
@@ -0,0 +1,116 @@
+using OpenTK.Graphics.OpenGL;
+using Ryujinx.Graphics.GAL;
+using System;
+
+namespace Ryujinx.Graphics.OpenGL
+{
+ class Framebuffer : IDisposable
+ {
+ public int Handle { get; private set; }
+
+ private FramebufferAttachment _lastDsAttachment;
+
+ public Framebuffer()
+ {
+ Handle = GL.GenFramebuffer();
+ }
+
+ public void Bind()
+ {
+ GL.BindFramebuffer(FramebufferTarget.Framebuffer, Handle);
+ }
+
+ public void AttachColor(int index, TextureView color)
+ {
+ GL.FramebufferTexture(
+ FramebufferTarget.Framebuffer,
+ FramebufferAttachment.ColorAttachment0 + index,
+ color?.Handle ?? 0,
+ 0);
+ }
+
+ public void AttachColor(int index, TextureView color, int layer)
+ {
+ GL.FramebufferTextureLayer(
+ FramebufferTarget.Framebuffer,
+ FramebufferAttachment.ColorAttachment0 + index,
+ color?.Handle ?? 0,
+ 0,
+ layer);
+ }
+
+ public void AttachDepthStencil(TextureView depthStencil)
+ {
+ // Detach the last depth/stencil buffer if there is any.
+ if (_lastDsAttachment != 0)
+ {
+ GL.FramebufferTexture(FramebufferTarget.Framebuffer, _lastDsAttachment, 0, 0);
+ }
+
+ if (depthStencil != null)
+ {
+ FramebufferAttachment attachment;
+
+ if (IsPackedDepthStencilFormat(depthStencil.Format))
+ {
+ attachment = FramebufferAttachment.DepthStencilAttachment;
+ }
+ else if (IsDepthOnlyFormat(depthStencil.Format))
+ {
+ attachment = FramebufferAttachment.DepthAttachment;
+ }
+ else
+ {
+ attachment = FramebufferAttachment.StencilAttachment;
+ }
+
+ GL.FramebufferTexture(
+ FramebufferTarget.Framebuffer,
+ attachment,
+ depthStencil.Handle,
+ 0);
+
+ _lastDsAttachment = attachment;
+ }
+ else
+ {
+ _lastDsAttachment = 0;
+ }
+ }
+
+ public void SetDrawBuffers(int colorsCount)
+ {
+ DrawBuffersEnum[] drawBuffers = new DrawBuffersEnum[colorsCount];
+
+ for (int index = 0; index < colorsCount; index++)
+ {
+ drawBuffers[index] = DrawBuffersEnum.ColorAttachment0 + index;
+ }
+
+ GL.DrawBuffers(colorsCount, drawBuffers);
+ }
+
+ private static bool IsPackedDepthStencilFormat(Format format)
+ {
+ return format == Format.D24UnormS8Uint ||
+ format == Format.D32FloatS8Uint;
+ }
+
+ private static bool IsDepthOnlyFormat(Format format)
+ {
+ return format == Format.D16Unorm ||
+ format == Format.D24X8Unorm ||
+ format == Format.D32Float;
+ }
+
+ public void Dispose()
+ {
+ if (Handle != 0)
+ {
+ GL.DeleteFramebuffer(Handle);
+
+ Handle = 0;
+ }
+ }
+ }
+}
--
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