using System; using UnityEngine; using UnityEngine.Experimental.Rendering; namespace FidelityFX { internal class Fsr2Resources { public Texture2D DefaultExposure; public Texture2D DefaultReactive; public Texture2D LanczosLut; public Texture2D MaximumBiasLut; public RenderTexture AutoExposure; public RenderTexture SceneLuminance; public readonly RenderTexture[] DilatedMotionVectors = new RenderTexture[2]; public readonly RenderTexture[] LockStatus = new RenderTexture[2]; public readonly RenderTexture[] InternalUpscaled = new RenderTexture[2]; public readonly RenderTexture[] LumaHistory = new RenderTexture[2]; public void Create(Fsr2.ContextDescription contextDescription) { // Generate the data for the LUT const int lanczos2LutWidth = 128; float[] lanczos2Weights = new float[lanczos2LutWidth]; for (int currentLanczosWidthIndex = 0; currentLanczosWidthIndex < lanczos2LutWidth; ++currentLanczosWidthIndex) { float x = 2.0f * currentLanczosWidthIndex / (lanczos2LutWidth - 1); float y = Fsr2.Lanczos2(x); lanczos2Weights[currentLanczosWidthIndex] = y; } float[] maximumBias = new float[MaximumBiasTextureWidth * MaximumBiasTextureHeight]; for (int i = 0; i < maximumBias.Length; ++i) { maximumBias[i] = MaximumBias[i] / 2.0f; } // Resource FSR2_LanczosLutData: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R16_SNORM, FFX_RESOURCE_FLAGS_NONE // R16_SNorm textures are not supported by Unity on most platforms, strangely enough. So instead we use R32_SFloat and upload pre-normalized float data. LanczosLut = new Texture2D(lanczos2LutWidth, 1, GraphicsFormat.R32_SFloat, TextureCreationFlags.None) { name = "FSR2_LanczosLutData" }; LanczosLut.SetPixelData(lanczos2Weights, 0); LanczosLut.Apply(); // Resource FSR2_MaximumUpsampleBias: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R16_SNORM, FFX_RESOURCE_FLAGS_NONE MaximumBiasLut = new Texture2D(MaximumBiasTextureWidth, MaximumBiasTextureHeight, GraphicsFormat.R32_SFloat, TextureCreationFlags.None) { name = "FSR2_MaximumUpsampleBias" }; MaximumBiasLut.SetPixelData(maximumBias, 0); MaximumBiasLut.Apply(); // Resource FSR2_DefaultExposure: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R32G32_FLOAT, FFX_RESOURCE_FLAGS_NONE DefaultExposure = new Texture2D(1, 1, GraphicsFormat.R32G32_SFloat, TextureCreationFlags.None) { name = "FSR2_DefaultExposure" }; DefaultExposure.SetPixel(0, 0, Color.clear); DefaultExposure.Apply(); // Resource FSR2_DefaultReactivityMask: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_NONE DefaultReactive = new Texture2D(1, 1, GraphicsFormat.R8_UNorm, TextureCreationFlags.None) { name = "FSR2_DefaultReactivityMask" }; DefaultReactive.SetPixel(0, 0, Color.clear); DefaultReactive.Apply(); // Resource FSR2_AutoExposure: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32G32_FLOAT, FFX_RESOURCE_FLAGS_NONE AutoExposure = new RenderTexture(1, 1, 0, GraphicsFormat.R32G32_SFloat) { name = "FSR2_AutoExposure", enableRandomWrite = true }; AutoExposure.Create(); // Resource FSR2_ExposureMips: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16_FLOAT, FFX_RESOURCE_FLAGS_ALIASABLE // This is a rather special case: it's an aliasable resource, but because we require a mipmap chain and bind specific mip levels per shader, we can't easily use temporary RTs for this. int w = contextDescription.MaxRenderSize.x / 2, h = contextDescription.MaxRenderSize.y / 2; int mipCount = 1 + Mathf.FloorToInt(Mathf.Log(Math.Max(w, h), 2.0f)); SceneLuminance = new RenderTexture(w, h, 0, GraphicsFormat.R16_SFloat, mipCount) { name = "FSR2_ExposureMips", enableRandomWrite = true, useMipMap = true, autoGenerateMips = false }; SceneLuminance.Create(); // Resources FSR2_InternalDilatedVelocity1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16_FLOAT, FFX_RESOURCE_FLAGS_NONE CreateDoubleBufferedResource(DilatedMotionVectors, "FSR2_InternalDilatedVelocity", contextDescription.MaxRenderSize, GraphicsFormat.R16G16_SFloat); // Resources FSR2_LockStatus1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16_FLOAT, FFX_RESOURCE_FLAGS_NONE CreateDoubleBufferedResource(LockStatus, "FSR2_LockStatus", contextDescription.DisplaySize, GraphicsFormat.R16G16_SFloat); // Resources FSR2_InternalUpscaled1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16B16A16_FLOAT, FFX_RESOURCE_FLAGS_NONE CreateDoubleBufferedResource(InternalUpscaled, "FSR2_InternalUpscaled", contextDescription.DisplaySize, GraphicsFormat.R16G16B16A16_SFloat); // Resources FSR2_LumaHistory1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8G8B8A8_UNORM, FFX_RESOURCE_FLAGS_NONE CreateDoubleBufferedResource(LumaHistory, "FSR2_LumaHistory", contextDescription.DisplaySize, GraphicsFormat.R8G8B8A8_UNorm); } private static void CreateDoubleBufferedResource(RenderTexture[] resource, string name, Vector2Int size, GraphicsFormat format) { for (int i = 0; i < 2; ++i) { resource[i] = new RenderTexture(size.x, size.y, 0, format) { name = name + (i + 1), enableRandomWrite = true }; resource[i].Create(); } } public void Destroy() { DestroyResource(LumaHistory); DestroyResource(InternalUpscaled); DestroyResource(LockStatus); DestroyResource(DilatedMotionVectors); DestroyResource(ref SceneLuminance); DestroyResource(ref AutoExposure); DestroyResource(ref DefaultReactive); DestroyResource(ref DefaultExposure); DestroyResource(ref MaximumBiasLut); DestroyResource(ref LanczosLut); } private static void DestroyResource(ref Texture2D resource) { if (resource == null) return; UnityEngine.Object.Destroy(resource); resource = null; } private static void DestroyResource(ref RenderTexture resource) { if (resource == null) return; resource.Release(); resource = null; } private static void DestroyResource(RenderTexture[] resource) { for (int i = 0; i < resource.Length; ++i) DestroyResource(ref resource[i]); } private const int MaximumBiasTextureWidth = 16; private const int MaximumBiasTextureHeight = 16; private static readonly float[] MaximumBias = { 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.876f, 1.809f, 1.772f, 1.753f, 1.748f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.869f, 1.801f, 1.764f, 1.745f, 1.739f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.976f, 1.841f, 1.774f, 1.737f, 1.716f, 1.71f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.914f, 1.784f, 1.716f, 1.673f, 1.649f, 1.641f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.793f, 1.676f, 1.604f, 1.562f, 1.54f, 1.533f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.802f, 1.619f, 1.536f, 1.492f, 1.467f, 1.454f, 1.449f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.812f, 1.575f, 1.496f, 1.456f, 1.432f, 1.416f, 1.408f, 1.405f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.555f, 1.479f, 1.438f, 1.413f, 1.398f, 1.387f, 1.381f, 1.379f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.812f, 1.555f, 1.474f, 1.43f, 1.404f, 1.387f, 1.376f, 1.368f, 1.363f, 1.362f, 2.0f, 2.0f, 2.0f, 2.0f, 2.0f, 1.802f, 1.575f, 1.479f, 1.43f, 1.401f, 1.382f, 1.369f, 1.36f, 1.354f, 1.351f, 1.35f, 2.0f, 2.0f, 1.976f, 1.914f, 1.793f, 1.619f, 1.496f, 1.438f, 1.404f, 1.382f, 1.367f, 1.357f, 1.349f, 1.344f, 1.341f, 1.34f, 1.876f, 1.869f, 1.841f, 1.784f, 1.676f, 1.536f, 1.456f, 1.413f, 1.387f, 1.369f, 1.357f, 1.347f, 1.341f, 1.336f, 1.333f, 1.332f, 1.809f, 1.801f, 1.774f, 1.716f, 1.604f, 1.492f, 1.432f, 1.398f, 1.376f, 1.36f, 1.349f, 1.341f, 1.335f, 1.33f, 1.328f, 1.327f, 1.772f, 1.764f, 1.737f, 1.673f, 1.562f, 1.467f, 1.416f, 1.387f, 1.368f, 1.354f, 1.344f, 1.336f, 1.33f, 1.326f, 1.323f, 1.323f, 1.753f, 1.745f, 1.716f, 1.649f, 1.54f, 1.454f, 1.408f, 1.381f, 1.363f, 1.351f, 1.341f, 1.333f, 1.328f, 1.323f, 1.321f, 1.32f, 1.748f, 1.739f, 1.71f, 1.641f, 1.533f, 1.449f, 1.405f, 1.379f, 1.362f, 1.35f, 1.34f, 1.332f, 1.327f, 1.323f, 1.32f, 1.319f, }; } }