From 484eb645ae0611f60fae845ed011ed6115352e06 Mon Sep 17 00:00:00 2001
From: riperiperi <rhy3756547@hotmail.com>
Date: Tue, 7 Jul 2020 03:41:07 +0100
Subject: Implement Zero-Configuration Resolution Scaling (#1365)

* Initial implementation of Render Target Scaling

Works with most games I have. No GUI option right now, it is hardcoded.

Missing handling for texelFetch operation.

* Realtime Configuration, refactoring.

* texelFetch scaling on fragment shader (WIP)

* Improve Shader-Side changes.

* Fix potential crash when no color/depth bound

* Workaround random uses of textures in compute.

This was blacklisting textures in a few games despite causing no bugs. Will eventually add full support so this doesn't break anything.

* Fix scales oscillating when changing between non-native scales.

* Scaled textures on compute, cleanup, lazier uniform update.

* Cleanup.

* Fix stupidity

* Address Thog Feedback.

* Cover most of GDK's feedback (two comments remain)

* Fix bad rename

* Move IsDepthStencil to FormatExtensions, add docs.

* Fix default config, square texture detection.

* Three final fixes:

- Nearest copy when texture is integer format.
- Texture2D -> Texture3D copy correctly blacklists the texture before trying an unscaled copy (caused driver error)
- Discount small textures.

* Remove scale threshold.

Not needed right now - we'll see if we run into problems.

* All CPU modification blacklists scale.

* Fix comment.
---
 Ryujinx.Graphics.Shader/Instructions/InstEmitMemory.cs  | 4 ++++
 Ryujinx.Graphics.Shader/Instructions/InstEmitTexture.cs | 6 ++++++
 2 files changed, 10 insertions(+)

(limited to 'Ryujinx.Graphics.Shader/Instructions')

diff --git a/Ryujinx.Graphics.Shader/Instructions/InstEmitMemory.cs b/Ryujinx.Graphics.Shader/Instructions/InstEmitMemory.cs
index 2418293d..24ba9a06 100644
--- a/Ryujinx.Graphics.Shader/Instructions/InstEmitMemory.cs
+++ b/Ryujinx.Graphics.Shader/Instructions/InstEmitMemory.cs
@@ -32,6 +32,8 @@ namespace Ryujinx.Graphics.Shader.Instructions
 
                 Operand src = Attribute(op.AttributeOffset + index * 4);
 
+                context.FlagAttributeRead(src.Value);
+
                 context.Copy(Register(rd), context.LoadAttribute(src, primVertex));
             }
         }
@@ -96,6 +98,8 @@ namespace Ryujinx.Graphics.Shader.Instructions
         {
             OpCodeIpa op = (OpCodeIpa)context.CurrOp;
 
+            context.FlagAttributeRead(op.AttributeOffset);
+
             Operand res = Attribute(op.AttributeOffset);
 
             if (op.AttributeOffset >= AttributeConsts.UserAttributeBase &&
diff --git a/Ryujinx.Graphics.Shader/Instructions/InstEmitTexture.cs b/Ryujinx.Graphics.Shader/Instructions/InstEmitTexture.cs
index 304906d0..ea153b11 100644
--- a/Ryujinx.Graphics.Shader/Instructions/InstEmitTexture.cs
+++ b/Ryujinx.Graphics.Shader/Instructions/InstEmitTexture.cs
@@ -283,11 +283,15 @@ namespace Ryujinx.Graphics.Shader.Instructions
 
         public static void Tld(EmitterContext context)
         {
+            context.UsedFeatures |= FeatureFlags.IntegerSampling;
+
             EmitTextureSample(context, TextureFlags.IntCoords);
         }
 
         public static void TldB(EmitterContext context)
         {
+            context.UsedFeatures |= FeatureFlags.IntegerSampling;
+
             EmitTextureSample(context, TextureFlags.IntCoords | TextureFlags.Bindless);
         }
 
@@ -428,6 +432,8 @@ namespace Ryujinx.Graphics.Shader.Instructions
                     return;
                 }
 
+                context.UsedFeatures |= FeatureFlags.IntegerSampling;
+
                 flags = ConvertTextureFlags(tldsOp.Target) | TextureFlags.IntCoords;
 
                 if (tldsOp.Target == TexelLoadTarget.Texture1DLodZero && context.Config.GpuAccessor.QueryIsTextureBuffer(tldsOp.Immediate))
-- 
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