Merge pull request #1 from DevsDaddy/develop

First Release

README.md

@@ -1,2 +1,40 @@
-# UnityXScaling
-Unity XScaling - a runtime framework for GPU-based textures and screen upscaling (super-resolution). Supports every platform.
+# Unity XScaling Framework
+![Unity XScaling Framework](https://github.com/DevsDaddy/UnityXScaling/assets/147835900/ac00e72d-923f-443e-9228-5ea5c1f52ea7)
+**Unity XScaling Framework** - is a set of tools for texture upscaling and real-time camera rendering, allowing you to improve picture quality without increasing the size of your build.
+
+Simply load 256x256 textures into your build and upscale them to any size in real time on demand. Or increase performance and quality with Super-Resolution Rendering and the Camera Upscale component
+
+**:question: What does the XScaling Library include?**
+* Real-time Texture Upscaling;
+* UI Image and RawImage Upscaler;
+* Distance-based textures upscaling;
+* Rendering Upscaling (Super-Sampling) (similar FRS or DLSS but fully cross-platform);
+* GPU-Based and cross-platform;
+
+## Get Started
+**GameShield** installs into your project as easily as possible - basic installation and configuration takes **only 4 steps**. Below we will consider both **automatic initialization** and **manual configuration**.
+
+**Basic Installation:**
+* Download <a href="https://github.com/DevsDaddy/UnityXScaling/releases">Latest Release from GitHUB</a>;
+* Import **.unitypackage** into your project;
+* See example scenes or add ready-to-use components on your models / ui elements;
+* Done!
+
+**Dependencies:**
+- Unity 2019+ and Built-in Render Pipeline Only (URP and HDRP support is coming soon);
+- TextMesh Pro and Texture2D packages for UI support;
+
+## Note
+> This library is still under development. The system performs best on cartoon textures, but I aim to solve this soon by adding new algorithms such as Real-ESRGAN.
+> Do not use preset HQ Quality at Production. Use HQ Performance instead.
+
+## Join Community
+- <a href="https://discord.gg/xuNTKRDebx">Discord Community</a>
+
+## Support Me
+**You can support the development and updating of libraries and assemblies by dropping a coin:**
+<table>
+  <tr><td>Bitcoin (BTC)</td><td>bc1qef2d34r4xkrm48zknjdjt7c0ea92ay9m2a7q55</td></tr>
+  <tr><td>Etherium (ETH)</td><td>0x1112a2Ef850711DF4dE9c432376F255f416ef5d0</td></tr>
+  <tr><td>Boosty</td><td>https://boosty.to/devsdaddy</td></tr>
+</table>

Source/Assets/DevsDaddy/XScaling/CameraUpscaler.cs

@@ -0,0 +1,190 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using DevsDaddy.XScaling.Core.Render;
+using DevsDaddy.XScaling.Core.Upscale;
+using DevsDaddy.XScaling.Enum;
+using DevsDaddy.XScaling.Utils;
+using UnityEngine;
+using UnityEngine.Experimental.Rendering;
+using UnityEngine.Rendering;
+
+namespace DevsDaddy.XScaling
+{
+    /// <summary>
+    /// XScale Camera Render Upscaling Component
+    /// </summary>
+    [AddComponentMenu("XScaling/Camera/Upscale Camera")]
+    [RequireComponent(typeof(Camera))]
+    public class CameraUpscaler : MonoBehaviour
+    {
+        // Events
+        public delegate void ApplyMipMapBiasDelegate(float biasOffset);
+        public static ApplyMipMapBiasDelegate OnApplyMipMapBias;
+
+        public delegate void UndoMipMapBiasDelegate();
+        public static UndoMipMapBiasDelegate OnUndoMipMapBias;
+
+        [Header("Basic Setup")]
+        [Tooltip("Standard Upscale Presets")]
+        public UpscaleMode qualityMode = UpscaleMode.HQQuality;
+
+        private Vector2Int _maxRenderSize;
+        private Vector2Int _displaySize;
+        private bool _resetHistory;
+
+        private Camera _renderCamera;
+        private RenderTexture _originalRenderTarget;
+        private DepthTextureMode _originalDepthTextureMode;
+        private Rect _originalRect;
+
+        private UpscaleMode _prevQualityMode;
+        private Vector2Int _prevDisplaySize;
+
+        private Material _copyWithDepthMaterial;
+
+        private bool _isActiveRender = false;
+
+        private void OnEnable()
+        {
+            _renderCamera = GetComponent<Camera>();
+            _originalRenderTarget = _renderCamera.targetTexture;
+            _originalDepthTextureMode = _renderCamera.depthTextureMode;
+            _renderCamera.targetTexture = null;
+            _renderCamera.depthTextureMode = _originalDepthTextureMode | DepthTextureMode.Depth | DepthTextureMode.MotionVectors;
+
+            // Determine the desired rendering and display resolutions
+            _displaySize = GetDisplaySize();
+            UpscaleUtils.GetRenderResolutionFromQualityMode(out var maxRenderWidth, out var maxRenderHeight, _displaySize.x, _displaySize.y, qualityMode);
+            _maxRenderSize = new Vector2Int(maxRenderWidth, maxRenderHeight);
+
+            if (_maxRenderSize.x == 0 || _maxRenderSize.y == 0)
+            {
+                Debug.LogError($"XScaling Upscaler render size is invalid: {_maxRenderSize.x}x{_maxRenderSize.y}. Please check your screen resolution and camera viewport parameters.");
+                enabled = false;
+                return;
+            }
+
+            _copyWithDepthMaterial = new Material(Shader.Find("Hidden/BlitCopyWithDepth"));
+            CreateContext();
+
+            XRender.OnStateChanged += OnRenderStateChanged;
+            OnRenderStateChanged(XRender.IsActive);
+        }
+
+        private void OnDisable()
+        {
+            DestroyContext();
+
+            if (_copyWithDepthMaterial != null)
+            {
+                Destroy(_copyWithDepthMaterial);
+                _copyWithDepthMaterial = null;
+            }
+
+            // Restore the camera's original state
+            _renderCamera.depthTextureMode = _originalDepthTextureMode;
+            _renderCamera.targetTexture = _originalRenderTarget;
+            XRender.OnStateChanged -= OnRenderStateChanged;
+        }
+
+        private void OnRenderStateChanged(bool isRenderActive) {
+            _isActiveRender = isRenderActive;
+        }
+
+        private void CreateContext()
+        {
+            _prevDisplaySize = _displaySize;
+            _prevQualityMode = qualityMode;
+            ApplyMipmapBias();
+        }
+
+        private void DestroyContext()
+        {
+            UndoMipmapBias();
+        }
+
+        private void ApplyMipmapBias()
+        {
+            // Apply a mipmap bias so that textures retain their sharpness
+            float biasOffset = UpscaleUtils.GetMipmapBiasOffset(_maxRenderSize.x, _displaySize.x);
+            if (!float.IsNaN(biasOffset) && !float.IsInfinity(biasOffset))
+            {
+                OnApplyMipMapBias?.Invoke(biasOffset);
+            }
+        }
+
+        private void UndoMipmapBias()
+        {
+            OnUndoMipMapBias?.Invoke();
+        }
+
+        private void Update()
+        {
+            // Monitor for any changes in parameters that require a reset of the FSR3 Upscaler context
+            var displaySize = GetDisplaySize();
+            if (displaySize.x != _prevDisplaySize.x || displaySize.y != _prevDisplaySize.y || qualityMode != _prevQualityMode)
+            {
+                OnDisable();
+                OnEnable();
+            }
+        }
+        private void LateUpdate()
+        {
+            // Remember the original camera viewport before we modify it in OnPreCull
+            _originalRect = _renderCamera.rect;
+        }
+
+        private void OnPreCull()
+        {
+            _renderCamera.aspect = (float)_displaySize.x / _displaySize.y;
+            _renderCamera.rect = new Rect(0, 0, _originalRect.width * _maxRenderSize.x / _renderCamera.pixelWidth, _originalRect.height * _maxRenderSize.y / _renderCamera.pixelHeight);
+        }
+
+        private void OnRenderImage(RenderTexture src, RenderTexture dest)
+        {
+            // Restore the camera's viewport rect so we can output at full resolution
+            _renderCamera.rect = _originalRect;
+            _renderCamera.ResetProjectionMatrix();
+
+            if (_isActiveRender) {
+                // The backbuffer is not set up to allow random-write access, so we need a temporary render texture for FSR3 to output to
+                RenderTexture renderTexture = UpscaleProcessor.UpscaleToRenderTexture(src, _prevQualityMode,
+                    UpscaleTechnique.TechniqueB, new UpscaleSize(Screen.width, Screen.height));
+
+                // Output the upscaled image
+                if (_originalRenderTarget != null)
+                    Graphics.Blit(renderTexture, _originalRenderTarget, _copyWithDepthMaterial);
+                else
+                    Graphics.Blit(renderTexture, dest);
+
+                RenderTexture.ReleaseTemporary(renderTexture);
+                renderTexture.Release();
+                RenderTexture.active = dest;
+            }
+            else {
+                // Output the upscaled image
+                if (_originalRenderTarget != null)
+                    Graphics.Blit(src, _originalRenderTarget, _copyWithDepthMaterial);
+                else
+                    Graphics.Blit(src, dest);
+            }
+        }
+
+        private RenderTextureFormat GetDefaultFormat()
+        {
+            if (_originalRenderTarget != null)
+                return _originalRenderTarget.format;
+
+            return _renderCamera.allowHDR ? RenderTextureFormat.DefaultHDR : RenderTextureFormat.Default;
+        }
+
+        private Vector2Int GetDisplaySize()
+        {
+            if (_originalRenderTarget != null)
+                return new Vector2Int(_originalRenderTarget.width, _originalRenderTarget.height);
+
+            return new Vector2Int(_renderCamera.pixelWidth, _renderCamera.pixelHeight);
+        }
+    }
+}