diff --git a/src/Ryujinx.Graphics.OpenGL/Framebuffer.cs b/src/Ryujinx.Graphics.OpenGL/Framebuffer.cs
index 394b8bc76..aad8735bb 100644
--- a/src/Ryujinx.Graphics.OpenGL/Framebuffer.cs
+++ b/src/Ryujinx.Graphics.OpenGL/Framebuffer.cs
@@ -20,6 +20,27 @@ namespace Ryujinx.Graphics.OpenGL
         private int _colorsCount;
         private bool _dualSourceBlend;
 
+        public bool HasAttachments
+        {
+            get
+            {
+                if (_depthStencil != null)
+                {
+                    return true;
+                }
+
+                for (int index = 0; index < _colors.Length; index++)
+                {
+                    if (_colors[index] != null)
+                    {
+                        return true;
+                    }
+                }
+
+                return false;
+            }
+        }
+
         public Framebuffer()
         {
             Handle = GL.GenFramebuffer();
@@ -34,6 +55,12 @@ namespace Ryujinx.Graphics.OpenGL
             return Handle;
         }
 
+        public void SetDefaultSize(int width, int height)
+        {
+            GL.FramebufferParameter(FramebufferTarget.Framebuffer, FramebufferDefaultParameter.FramebufferDefaultWidth, Math.Max(1, width));
+            GL.FramebufferParameter(FramebufferTarget.Framebuffer, FramebufferDefaultParameter.FramebufferDefaultHeight, Math.Max(1, height));
+        }
+
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public void AttachColor(int index, TextureView color)
         {
@@ -105,13 +132,20 @@ namespace Ryujinx.Graphics.OpenGL
             _colorsCount = colorsCount;
         }
 
-        private static void SetDrawBuffersImpl(int colorsCount)
+        private void SetDrawBuffersImpl(int colorsCount)
         {
             DrawBuffersEnum[] drawBuffers = new DrawBuffersEnum[colorsCount];
 
             for (int index = 0; index < colorsCount; index++)
             {
-                drawBuffers[index] = DrawBuffersEnum.ColorAttachment0 + index;
+                if (_colors[index] != null)
+                {
+                    drawBuffers[index] = DrawBuffersEnum.ColorAttachment0 + index;
+                }
+                else
+                {
+                    drawBuffers[index] = DrawBuffersEnum.None;
+                }
             }
 
             GL.DrawBuffers(colorsCount, drawBuffers);
diff --git a/src/Ryujinx.Graphics.OpenGL/Pipeline.cs b/src/Ryujinx.Graphics.OpenGL/Pipeline.cs
index 6774f0fba..0de923275 100644
--- a/src/Ryujinx.Graphics.OpenGL/Pipeline.cs
+++ b/src/Ryujinx.Graphics.OpenGL/Pipeline.cs
@@ -1537,6 +1537,11 @@ namespace Ryujinx.Graphics.OpenGL
         {
             DrawCount++;
 
+            if (!_framebuffer.HasAttachments && _viewportArray.Length >= 4)
+            {
+                _framebuffer.SetDefaultSize((int)_viewportArray[2], (int)_viewportArray[3]);
+            }
+
             _unit0Texture?.Bind(0);
         }
 
diff --git a/src/Ryujinx.Graphics.Vulkan/FramebufferParams.cs b/src/Ryujinx.Graphics.Vulkan/FramebufferParams.cs
index a0d1b50df..e5800ed7d 100644
--- a/src/Ryujinx.Graphics.Vulkan/FramebufferParams.cs
+++ b/src/Ryujinx.Graphics.Vulkan/FramebufferParams.cs
@@ -32,6 +32,29 @@ namespace Ryujinx.Graphics.Vulkan
         public bool HasDepthStencil { get; private set; }
         public int ColorAttachmentsCount => AttachmentsCount - (HasDepthStencil ? 1 : 0);
 
+        public bool SetVirtualSize(uint width, uint height, uint layers)
+        {
+            if (AttachmentsCount != 0)
+            {
+                return false;
+            }
+
+            width = Math.Max(1u, width);
+            height = Math.Max(1u, height);
+            layers = Math.Max(1u, layers);
+
+            if (Width == width && Height == height && Layers == layers)
+            {
+                return false;
+            }
+
+            Width = width;
+            Height = height;
+            Layers = layers;
+
+            return true;
+        }
+
         public FramebufferParams(Device device, TextureView view, uint width, uint height)
         {
             Format format = view.Info.Format;
diff --git a/src/Ryujinx.Graphics.Vulkan/PipelineBase.cs b/src/Ryujinx.Graphics.Vulkan/PipelineBase.cs
index aececee61..fcb8826c2 100644
--- a/src/Ryujinx.Graphics.Vulkan/PipelineBase.cs
+++ b/src/Ryujinx.Graphics.Vulkan/PipelineBase.cs
@@ -843,6 +843,11 @@ namespace Ryujinx.Graphics.Vulkan
         public void SetImage(ShaderStage stage, int binding, ITexture image)
         {
             _descriptorSetUpdater.SetImage(Cbs, stage, binding, image);
+
+            if (stage == ShaderStage.Fragment && image is TextureView view)
+            {
+                FramebufferParams?.SetVirtualSize((uint)view.Width, (uint)view.Height, (uint)view.Layers);
+            }
         }
 
         public void SetImage(int binding, Auto<DisposableImageView> image)
@@ -1607,6 +1612,24 @@ namespace Ryujinx.Graphics.Vulkan
 
         private bool RecreateGraphicsPipelineIfNeeded()
         {
+            if (FramebufferParams != null &&
+                FramebufferParams.AttachmentsCount == 0 &&
+                FramebufferParams.Width == 1 &&
+                FramebufferParams.Height == 1 &&
+                DynamicState.ViewportsCount != 0)
+            {
+                // An attachmentless fragment pass can reach its first draw before the storage
+                // image descriptor is rebound. At that point the null framebuffer still has
+                // its constructor fallback of 1x1, even though the guest viewport already
+                // describes the real render area. Seed the virtual framebuffer from that
+                // viewport so the first storage-image draw is not clipped to one pixel.
+                Silk.NET.Vulkan.Viewport viewport = DynamicState.Viewports[0];
+                uint width = (uint)Math.Max(1f, Math.Abs(viewport.Width));
+                uint height = (uint)Math.Max(1f, Math.Abs(viewport.Height));
+
+                FramebufferParams.SetVirtualSize(width, height, 1);
+            }
+
             if (AutoFlush.ShouldFlushDraw(DrawCount))
             {
                 Gd.FlushAllCommands();