您最多选择25个主题
主题必须以中文或者字母或数字开头，可以包含连字符 (-)，并且长度不得超过35个字符
531 行
21 KiB
531 行
21 KiB
using System.Collections.Generic;
|
|
using UnityEngine.Rendering;
|
|
|
|
namespace UnityEngine.Experimental.Rendering
|
|
{
|
|
public delegate Vector2Int ScaleFunc(Vector2Int size);
|
|
|
|
public enum DepthBits
|
|
{
|
|
None = 0,
|
|
Depth8 = 8,
|
|
Depth16 = 16,
|
|
Depth24 = 24
|
|
}
|
|
|
|
public enum MSAASamples
|
|
{
|
|
None = 1,
|
|
MSAA2x = 2,
|
|
MSAA4x = 4,
|
|
MSAA8x = 8
|
|
}
|
|
|
|
public class RTHandle
|
|
{
|
|
enum RTCategory
|
|
{
|
|
Regular = 0,
|
|
MSAA = 1,
|
|
Count
|
|
}
|
|
|
|
// Static management.
|
|
public static int s_MaxWidth { get { return s_MaxWidths[(int)RTCategory.Regular]; } }
|
|
public static int s_MaxHeight { get { return s_MaxHeights[(int)RTCategory.Regular]; } }
|
|
|
|
public static int s_MaxWidthMSAAA { get { return s_MaxWidths[(int)RTCategory.MSAA]; } }
|
|
public static int s_MaxHeightMSAA { get { return s_MaxHeights[(int)RTCategory.MSAA]; } }
|
|
|
|
private static int GetMaxWith(RTCategory category) { return s_MaxWidths[(int)category]; }
|
|
private static int GetMaxHeight(RTCategory category) { return s_MaxHeights[(int)category]; }
|
|
|
|
|
|
// Parameters for auto-scaled Render Textures
|
|
static bool s_ScaledRTSupportsMSAA = false;
|
|
static MSAASamples s_ScaledRTCurrentMSAASamples = MSAASamples.None;
|
|
static List<RTHandle> s_AutoSizedRTs;
|
|
static RTCategory s_ScaledRTCurrentCategory = RTCategory.Regular;
|
|
|
|
static int[] s_MaxWidths = new int[(int)RTCategory.Count];
|
|
static int[] s_MaxHeights = new int[(int)RTCategory.Count];
|
|
|
|
public static int maxWidth { get { return GetMaxWith(s_ScaledRTCurrentCategory); } }
|
|
public static int maxHeight { get { return GetMaxHeight(s_ScaledRTCurrentCategory); } }
|
|
|
|
static RTHandle()
|
|
{
|
|
s_AutoSizedRTs = new List<RTHandle>();
|
|
for (int i = 0; i < (int)RTCategory.Count; ++i)
|
|
{
|
|
s_MaxWidths[i] = 1;
|
|
s_MaxHeights[i] = 1;
|
|
}
|
|
}
|
|
|
|
// Call this once to set the initial size and allow msaa targets or not.
|
|
public static void Initialize(int width, int height, bool scaledRTsupportsMSAA, MSAASamples scaledRTMSAASamples)
|
|
{
|
|
Debug.Assert(s_AutoSizedRTs.Count == 0, "RTHandle.Initialize should only be called once before allocating any Render Texture.");
|
|
|
|
for (int i = 0; i < (int)RTCategory.Count; ++i)
|
|
{
|
|
s_MaxWidths[i] = width;
|
|
s_MaxHeights[i] = height;
|
|
}
|
|
|
|
s_ScaledRTSupportsMSAA = scaledRTsupportsMSAA;
|
|
s_ScaledRTCurrentMSAASamples = scaledRTMSAASamples;
|
|
}
|
|
|
|
public static void Release(RTHandle rth)
|
|
{
|
|
if(rth != null)
|
|
rth.Release();
|
|
}
|
|
|
|
public static void SetReferenceSize(int width, int height, bool msaa, MSAASamples msaaSamples)
|
|
{
|
|
// Technically, the enum could be passed as argument directly but let's not pollute public API with unnecessary complexity for now.
|
|
RTCategory category = msaa ? RTCategory.MSAA : RTCategory.Regular;
|
|
|
|
width = Mathf.Max(width, 1);
|
|
height = Mathf.Max(height, 1);
|
|
|
|
bool msaaSamplesChanged = msaa && (msaaSamples != s_ScaledRTCurrentMSAASamples);
|
|
if (width > GetMaxWith(category) || height > GetMaxHeight(category) || msaaSamplesChanged)
|
|
Resize(width, height, category, msaaSamples);
|
|
}
|
|
|
|
public static void ResetReferenceSize(int width, int height, bool msaa, MSAASamples msaaSamples)
|
|
{
|
|
// Technically, the enum could be passed as argument directly but let's not pollute public API with unnecessary complexity for now.
|
|
RTCategory category = msaa ? RTCategory.MSAA : RTCategory.Regular;
|
|
|
|
width = Mathf.Max(width, 1);
|
|
height = Mathf.Max(height, 1);
|
|
|
|
bool msaaSamplesChanged = msaa && (msaaSamples != s_ScaledRTCurrentMSAASamples);
|
|
if (width != GetMaxWith(category) || height != GetMaxHeight(category) || msaaSamplesChanged)
|
|
Resize(width, height, category, msaaSamples);
|
|
}
|
|
|
|
static void Resize(int width, int height, RTCategory category, MSAASamples msaaSamples)
|
|
{
|
|
s_MaxWidths[(int)category] = width;
|
|
s_MaxHeights[(int)category] = height;
|
|
s_ScaledRTCurrentMSAASamples = msaaSamples;
|
|
|
|
var maxSize = new Vector2Int(width, height);
|
|
s_ScaledRTCurrentCategory = category;
|
|
|
|
foreach (var rth in s_AutoSizedRTs)
|
|
{
|
|
var rt = rth.m_RTs[(int)category];
|
|
|
|
// This can happen if you create a RTH for MSAA. By default we only create the MSAA version of the target.
|
|
// Missing version will be created when needed in the getter.
|
|
if (rt != null)
|
|
{
|
|
rt.Release();
|
|
|
|
Vector2Int scaledSize = rth.GetScaledSize(maxSize);
|
|
|
|
rt.width = Mathf.Max(scaledSize.x, 1);
|
|
rt.height = Mathf.Max(scaledSize.y, 1);
|
|
|
|
if (category == RTCategory.MSAA)
|
|
rt.antiAliasing = (int)s_ScaledRTCurrentMSAASamples;
|
|
rt.Create();
|
|
}
|
|
}
|
|
}
|
|
|
|
// This method wraps around regular RenderTexture creation.
|
|
// There is no specific logic applied to RenderTextures created this way.
|
|
public static RTHandle Alloc(
|
|
int width,
|
|
int height,
|
|
int slices = 1,
|
|
DepthBits depthBufferBits = DepthBits.None,
|
|
RenderTextureFormat colorFormat = RenderTextureFormat.Default,
|
|
FilterMode filterMode = FilterMode.Point,
|
|
TextureWrapMode wrapMode = TextureWrapMode.Repeat,
|
|
TextureDimension dimension = TextureDimension.Tex2D,
|
|
bool sRGB = true,
|
|
bool enableRandomWrite = false,
|
|
bool useMipMap = false,
|
|
bool autoGenerateMips = true,
|
|
int anisoLevel = 1,
|
|
float mipMapBias = 0f,
|
|
MSAASamples msaaSamples = MSAASamples.None,
|
|
bool bindTextureMS = false,
|
|
bool useDynamicScale = false,
|
|
VRTextureUsage vrUsage = VRTextureUsage.None,
|
|
RenderTextureMemoryless memoryless = RenderTextureMemoryless.None
|
|
)
|
|
{
|
|
bool enableMSAA = msaaSamples != MSAASamples.None;
|
|
if (!enableMSAA && bindTextureMS == true)
|
|
{
|
|
Debug.LogWarning("RTHandle allocated without MSAA but with bindMS set to true, forcing bindMS to false.");
|
|
bindTextureMS = false;
|
|
}
|
|
|
|
var rt = new RenderTexture(width, height, (int)depthBufferBits, colorFormat, sRGB ? RenderTextureReadWrite.sRGB : RenderTextureReadWrite.Linear)
|
|
{
|
|
hideFlags = HideFlags.HideAndDontSave,
|
|
volumeDepth = slices,
|
|
filterMode = filterMode,
|
|
wrapMode = wrapMode,
|
|
dimension = dimension,
|
|
enableRandomWrite = enableRandomWrite,
|
|
useMipMap = useMipMap,
|
|
autoGenerateMips = autoGenerateMips,
|
|
anisoLevel = anisoLevel,
|
|
mipMapBias = mipMapBias,
|
|
antiAliasing = (int)msaaSamples,
|
|
bindTextureMS = bindTextureMS,
|
|
useDynamicScale = useDynamicScale,
|
|
vrUsage = vrUsage,
|
|
memorylessMode = memoryless
|
|
};
|
|
rt.Create();
|
|
|
|
RTCategory category = enableMSAA ? RTCategory.MSAA : RTCategory.Regular;
|
|
var newRT = new RTHandle();
|
|
newRT.SetRenderTexture(rt, category);
|
|
newRT.useScaling = false;
|
|
newRT.m_EnableRandomWrite = enableRandomWrite;
|
|
newRT.m_EnableMSAA = enableMSAA;
|
|
return newRT;
|
|
}
|
|
|
|
|
|
// Next two methods are used to allocate RenderTexture that depend on the frame settings (resolution and msaa for now)
|
|
// RenderTextures allocated this way are meant to be defined by a scale of camera resolution (full/half/quarter resolution for example).
|
|
// The idea is that internally the system will scale up the size of all render texture so that it amortizes with time and not reallocate when a smaller size is required (which is what happens with TemporaryRTs).
|
|
// Since MSAA cannot be changed on the fly for a given RenderTexture, a separate instance will be created if the user requires it. This instance will be the one used after the next call of SetReferenceSize if MSAA is required.
|
|
public static RTHandle Alloc(
|
|
Vector2 scaleFactor,
|
|
DepthBits depthBufferBits = DepthBits.None,
|
|
RenderTextureFormat colorFormat = RenderTextureFormat.Default,
|
|
FilterMode filterMode = FilterMode.Point,
|
|
TextureWrapMode wrapMode = TextureWrapMode.Repeat,
|
|
TextureDimension dimension = TextureDimension.Tex2D,
|
|
bool sRGB = true,
|
|
bool enableRandomWrite = false,
|
|
bool useMipMap = false,
|
|
bool autoGenerateMips = true,
|
|
int anisoLevel = 1,
|
|
float mipMapBias = 0f,
|
|
bool enableMSAA = false,
|
|
bool bindTextureMS = false,
|
|
bool useDynamicScale = false,
|
|
VRTextureUsage vrUsage = VRTextureUsage.None,
|
|
RenderTextureMemoryless memoryless = RenderTextureMemoryless.None
|
|
)
|
|
{
|
|
bool allocForMSAA = s_ScaledRTSupportsMSAA ? enableMSAA : false;
|
|
RTCategory category = allocForMSAA ? RTCategory.MSAA : RTCategory.Regular;
|
|
|
|
int width = Mathf.Max(Mathf.RoundToInt(scaleFactor.x * GetMaxWith(category)), 1);
|
|
int height = Mathf.Max(Mathf.RoundToInt(scaleFactor.y * GetMaxHeight(category)), 1);
|
|
|
|
var rth = AllocAutoSizedRenderTexture(width,
|
|
height,
|
|
1,
|
|
depthBufferBits,
|
|
colorFormat,
|
|
filterMode,
|
|
wrapMode,
|
|
dimension,
|
|
sRGB,
|
|
enableRandomWrite,
|
|
useMipMap,
|
|
autoGenerateMips,
|
|
anisoLevel,
|
|
mipMapBias,
|
|
enableMSAA,
|
|
bindTextureMS,
|
|
useDynamicScale,
|
|
vrUsage,
|
|
memoryless
|
|
);
|
|
|
|
rth.scaleFactor = scaleFactor;
|
|
return rth;
|
|
}
|
|
|
|
//
|
|
// You can provide your own scaling function for advanced scaling schemes (e.g. scaling to
|
|
// the next POT). The function takes a Vec2 as parameter that holds max width & height
|
|
// values for the current manager context and returns a Vec2 of the final size in pixels.
|
|
//
|
|
// var rth = Alloc(
|
|
// size => new Vector2Int(size.x / 2, size.y),
|
|
// [...]
|
|
// );
|
|
//
|
|
public static RTHandle Alloc(
|
|
ScaleFunc scaleFunc,
|
|
DepthBits depthBufferBits = DepthBits.None,
|
|
RenderTextureFormat colorFormat = RenderTextureFormat.Default,
|
|
FilterMode filterMode = FilterMode.Point,
|
|
TextureWrapMode wrapMode = TextureWrapMode.Repeat,
|
|
TextureDimension dimension = TextureDimension.Tex2D,
|
|
bool sRGB = true,
|
|
bool enableRandomWrite = false,
|
|
bool useMipMap = false,
|
|
bool autoGenerateMips = true,
|
|
int anisoLevel = 1,
|
|
float mipMapBias = 0f,
|
|
bool enableMSAA = false,
|
|
bool bindTextureMS = false,
|
|
bool useDynamicScale = false,
|
|
VRTextureUsage vrUsage = VRTextureUsage.None,
|
|
RenderTextureMemoryless memoryless = RenderTextureMemoryless.None
|
|
)
|
|
{
|
|
bool allocForMSAA = s_ScaledRTSupportsMSAA ? enableMSAA : false;
|
|
RTCategory category = allocForMSAA ? RTCategory.MSAA : RTCategory.Regular;
|
|
|
|
var scaleFactor = scaleFunc(new Vector2Int(GetMaxWith(category), GetMaxHeight(category)));
|
|
int width = Mathf.Max(scaleFactor.x, 1);
|
|
int height = Mathf.Max(scaleFactor.y, 1);
|
|
|
|
var rth = AllocAutoSizedRenderTexture(width,
|
|
height,
|
|
1,
|
|
depthBufferBits,
|
|
colorFormat,
|
|
filterMode,
|
|
wrapMode,
|
|
dimension,
|
|
sRGB,
|
|
enableRandomWrite,
|
|
useMipMap,
|
|
autoGenerateMips,
|
|
anisoLevel,
|
|
mipMapBias,
|
|
enableMSAA,
|
|
bindTextureMS,
|
|
useDynamicScale,
|
|
vrUsage,
|
|
memoryless
|
|
);
|
|
|
|
rth.scaleFunc = scaleFunc;
|
|
return rth;
|
|
}
|
|
|
|
static RTHandle AllocAutoSizedRenderTexture(
|
|
int width,
|
|
int height,
|
|
int slices,
|
|
DepthBits depthBufferBits,
|
|
RenderTextureFormat colorFormat,
|
|
FilterMode filterMode,
|
|
TextureWrapMode wrapMode,
|
|
TextureDimension dimension,
|
|
bool sRGB,
|
|
bool enableRandomWrite,
|
|
bool useMipMap,
|
|
bool autoGenerateMips,
|
|
int anisoLevel,
|
|
float mipMapBias,
|
|
bool enableMSAA,
|
|
bool bindTextureMS,
|
|
bool useDynamicScale,
|
|
VRTextureUsage vrUsage,
|
|
RenderTextureMemoryless memoryless
|
|
)
|
|
{
|
|
// Here user made a mistake in setting up msaa/bindMS, hence the warning
|
|
if (!enableMSAA && bindTextureMS == true)
|
|
{
|
|
Debug.LogWarning("RTHandle allocated without MSAA but with bindMS set to true, forcing bindMS to false.");
|
|
bindTextureMS = false;
|
|
}
|
|
|
|
bool allocForMSAA = s_ScaledRTSupportsMSAA ? enableMSAA : false;
|
|
// Here we purposefully disable MSAA so we just force the bindMS param to false.
|
|
if (!allocForMSAA)
|
|
{
|
|
bindTextureMS = false;
|
|
}
|
|
|
|
int msaaSamples = allocForMSAA ? (int)s_ScaledRTCurrentMSAASamples : 1;
|
|
bool UAV = allocForMSAA ? false : enableRandomWrite; // MSAA Does not support random read/write.
|
|
RTCategory category = allocForMSAA ? RTCategory.MSAA : RTCategory.Regular;
|
|
|
|
var rt = new RenderTexture(width, height, (int)depthBufferBits, colorFormat, sRGB ? RenderTextureReadWrite.sRGB : RenderTextureReadWrite.Linear)
|
|
{
|
|
hideFlags = HideFlags.HideAndDontSave,
|
|
volumeDepth = slices,
|
|
filterMode = filterMode,
|
|
wrapMode = wrapMode,
|
|
dimension = dimension,
|
|
enableRandomWrite = UAV,
|
|
useMipMap = useMipMap,
|
|
autoGenerateMips = autoGenerateMips,
|
|
anisoLevel = anisoLevel,
|
|
mipMapBias = mipMapBias,
|
|
antiAliasing = msaaSamples,
|
|
bindTextureMS = bindTextureMS,
|
|
useDynamicScale = useDynamicScale,
|
|
vrUsage = vrUsage,
|
|
memorylessMode = memoryless
|
|
};
|
|
rt.Create();
|
|
|
|
RTHandle rth = new RTHandle();
|
|
rth.SetRenderTexture(rt, category);
|
|
rth.m_EnableMSAA = enableMSAA;
|
|
rth.m_EnableRandomWrite = enableRandomWrite;
|
|
rth.useScaling = true;
|
|
s_AutoSizedRTs.Add(rth);
|
|
return rth;
|
|
}
|
|
|
|
public static implicit operator RenderTexture(RTHandle handle)
|
|
{
|
|
return handle.rt;
|
|
}
|
|
|
|
public static implicit operator RenderTargetIdentifier(RTHandle handle)
|
|
{
|
|
return handle.nameID;
|
|
}
|
|
|
|
public static string DumpRTInfo()
|
|
{
|
|
string result = "";
|
|
for (int i = 0; i < s_AutoSizedRTs.Count; ++i)
|
|
{
|
|
RenderTexture rt = s_AutoSizedRTs[i].rt;
|
|
result = string.Format("{0}\nRT ({1})\t Format: {2} W: {3} H {4}\n", result, i, rt.format, rt.width, rt.height );
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Instance data
|
|
RenderTexture[] m_RTs = new RenderTexture[2];
|
|
RenderTargetIdentifier[] m_NameIDs = new RenderTargetIdentifier[2];
|
|
bool m_EnableMSAA = false;
|
|
bool m_EnableRandomWrite = false;
|
|
|
|
Vector2 scaleFactor = Vector2.one;
|
|
ScaleFunc scaleFunc;
|
|
|
|
public bool useScaling { get; private set; }
|
|
|
|
public RenderTexture rt
|
|
{
|
|
get
|
|
{
|
|
if(!useScaling)
|
|
{
|
|
return m_EnableMSAA ? m_RTs[(int)RTCategory.MSAA] : m_RTs[(int)RTCategory.Regular];
|
|
}
|
|
else
|
|
{
|
|
RTCategory category = (m_EnableMSAA && s_ScaledRTCurrentCategory == RTCategory.MSAA) ? RTCategory.MSAA : RTCategory.Regular;
|
|
CreateIfNeeded(category);
|
|
return m_RTs[(int)category];
|
|
}
|
|
}
|
|
}
|
|
|
|
public RenderTargetIdentifier nameID
|
|
{
|
|
get
|
|
{
|
|
if (!useScaling)
|
|
{
|
|
return m_EnableMSAA ? m_NameIDs[(int)RTCategory.MSAA] : m_RTs[(int)RTCategory.Regular];
|
|
}
|
|
else
|
|
{
|
|
RTCategory category = (m_EnableMSAA && s_ScaledRTCurrentCategory == RTCategory.MSAA) ? RTCategory.MSAA : RTCategory.Regular;
|
|
CreateIfNeeded(category);
|
|
return m_NameIDs[(int)category];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Keep constructor private
|
|
RTHandle()
|
|
{
|
|
}
|
|
|
|
void SetRenderTexture(RenderTexture rt, RTCategory category)
|
|
{
|
|
m_RTs[(int)category] = rt;
|
|
m_NameIDs[(int)category] = new RenderTargetIdentifier(rt);
|
|
}
|
|
|
|
void CreateIfNeeded(RTCategory category)
|
|
{
|
|
// If a RT was first created for MSAA then the regular one might be null, in this case we create it.
|
|
// That's why we never test the MSAA version: It should always be there if RT was declared correctly.
|
|
if(category == RTCategory.Regular && m_RTs[(int)RTCategory.Regular] == null)
|
|
{
|
|
RenderTexture refRT = m_RTs[(int)RTCategory.MSAA];
|
|
Debug.Assert(refRT != null);
|
|
Vector2Int scaledSize = GetScaledSize(new Vector2Int(s_MaxWidth, s_MaxHeight));
|
|
|
|
RenderTexture newRT = new RenderTexture(scaledSize.x, scaledSize.y, refRT.depth, refRT.format, refRT.sRGB ? RenderTextureReadWrite.sRGB : RenderTextureReadWrite.Linear)
|
|
{
|
|
hideFlags = HideFlags.HideAndDontSave,
|
|
volumeDepth = refRT.volumeDepth,
|
|
filterMode = refRT.filterMode,
|
|
wrapMode = refRT.wrapMode,
|
|
dimension = refRT.dimension,
|
|
enableRandomWrite = m_EnableRandomWrite, // We cannot take the info from the msaa rt since we force it to 1
|
|
useMipMap = refRT.useMipMap,
|
|
autoGenerateMips = refRT.autoGenerateMips,
|
|
anisoLevel = refRT.anisoLevel,
|
|
mipMapBias = refRT.mipMapBias,
|
|
antiAliasing = 1, // No MSAA for the regular version of the texture.
|
|
bindTextureMS = refRT.bindTextureMS,
|
|
useDynamicScale = refRT.useDynamicScale,
|
|
vrUsage = refRT.vrUsage,
|
|
memorylessMode = refRT.memorylessMode
|
|
};
|
|
newRT.Create();
|
|
|
|
m_RTs[(int)RTCategory.Regular] = newRT;
|
|
m_NameIDs[(int)RTCategory.Regular] = new RenderTargetIdentifier(newRT);
|
|
}
|
|
}
|
|
|
|
public void Release()
|
|
{
|
|
|
|
s_AutoSizedRTs.Remove(this);
|
|
for (int i = 0; i < (int)RTCategory.Count; ++i)
|
|
{
|
|
CoreUtils.Destroy(m_RTs[i]);
|
|
m_NameIDs[i] = BuiltinRenderTextureType.None;
|
|
m_RTs[i] = null;
|
|
}
|
|
}
|
|
|
|
public Vector2Int GetScaledSize(Vector2Int refSize)
|
|
{
|
|
if (scaleFunc != null)
|
|
{
|
|
return scaleFunc(refSize);
|
|
}
|
|
else
|
|
{
|
|
return new Vector2Int(
|
|
x: Mathf.RoundToInt(scaleFactor.x * refSize.x),
|
|
y: Mathf.RoundToInt(scaleFactor.y * refSize.y)
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|