[GPU] Fix frame buffer being upside down in some cases

1 files changed, 36 insertions, 0 deletions

diff --git a/Ryujinx.Graphics/Gal/OpenGL/OGLFrameBuffer.cs b/Ryujinx.Graphics/Gal/OpenGL/OGLFrameBuffer.cs
index cca61e18..e0da9179 100644
--- a/Ryujinx.Graphics/Gal/OpenGL/OGLFrameBuffer.cs
+++ b/Ryujinx.Graphics/Gal/OpenGL/OGLFrameBuffer.cs
@@ -7,6 +7,22 @@ namespace Ryujinx.Graphics.Gal.OpenGL
 {
     class OGLFrameBuffer
     {
+        private struct Rect
+        {
+            public int X      { get; private set; }
+            public int Y      { get; private set; }
+            public int Width  { get; private set; }
+            public int Height { get; private set; }
+
+            public Rect(int X, int Y, int Width, int Height)
+            {
+                this.X     = X;
+                this.Y     = Y;
+                this.Width = Width;
+                this.Height = Height;
+            }
+        }
+
         private class FrameBuffer
         {
             public int Width  { get; set; }
@@ -38,6 +54,8 @@ namespace Ryujinx.Graphics.Gal.OpenGL
 
         private ShaderProgram Shader;
 
+        private Rect Viewport;
+
         private bool IsInitialized;
 
         private int RawFbTexWidth;
@@ -178,6 +196,13 @@ namespace Ryujinx.Graphics.Gal.OpenGL
             GL.UseProgram(CurrentProgram);
         }
 
+        public void SetViewport(int X, int Y, int Width, int Height)
+        {
+            Viewport = new Rect(X, Y, Width, Height);
+
+            //TODO
+        }
+
         public void Render()
         {
             if (CurrTexHandle != 0)
@@ -196,6 +221,8 @@ namespace Ryujinx.Graphics.Gal.OpenGL
 
                 GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
 
+                GL.Viewport(0, 0, 1280, 720);
+
                 GL.Clear(
                     ClearBufferMask.ColorBufferBit |
                     ClearBufferMask.DepthBufferBit);
@@ -218,6 +245,15 @@ namespace Ryujinx.Graphics.Gal.OpenGL
             }
         }
 
+        private void SetViewport()
+        {
+            GL.Viewport(
+                Viewport.X,
+                Viewport.Y,
+                Viewport.Width,
+                Viewport.Height);
+        }
+
         private void EnsureInitialized()
         {
             if (!IsInitialized)