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using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine.Rendering;
namespace UnityEngine.Experimental.Rendering
{
using UnityObject = UnityEngine.Object;
[Flags]
public enum ClearFlag
{
None = 0,
Color = 1,
Depth = 2,
All = Depth | Color
}
public static class CoreUtils
{
// Keep a reference to default values for Reset purpose
static public AdditionalShadowData s_DefaultAdditionalShadowData { get { return ComponentSingleton<AdditionalShadowData>.instance; } }
// Data useful for various cubemap processes.
// Ref: https://msdn.microsoft.com/en-us/library/windows/desktop/bb204881(v=vs.85).aspx
static public readonly Vector3[] lookAtList =
{
new Vector3(1.0f, 0.0f, 0.0f),
new Vector3(-1.0f, 0.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, -1.0f, 0.0f),
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 0.0f, -1.0f),
};
static public readonly Vector3[] upVectorList =
{
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 0.0f, -1.0f),
new Vector3(0.0f, 0.0f, 1.0f),
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(0.0f, 1.0f, 0.0f),
};
// Note: Color.Black have alpha channel set to 1. Most of the time we want alpha channel set to 0 as we use black to clear render target
public static Color clearColorAllBlack { get { return new Color(0f, 0f, 0f, 0f); } }
public const int editMenuPriority1 = 320;
public const int editMenuPriority2 = 331;
public const int editMenuPriority3 = 342;
public const int assetCreateMenuPriority1 = 230;
public const int assetCreateMenuPriority2 = 241;
public const int gameObjectMenuPriority = 10;
static Cubemap m_BlackCubeTexture;
public static Cubemap blackCubeTexture
{
get
{
if (m_BlackCubeTexture == null)
{
m_BlackCubeTexture = new Cubemap(1, TextureFormat.ARGB32, false);
for (int i = 0; i < 6; ++i)
m_BlackCubeTexture.SetPixel((CubemapFace)i, 0, 0, Color.black);
m_BlackCubeTexture.Apply();
}
return m_BlackCubeTexture;
}
}
static Cubemap m_MagentaCubeTexture;
public static Cubemap magentaCubeTexture
{
get
{
if (m_MagentaCubeTexture == null)
{
m_MagentaCubeTexture = new Cubemap(1, TextureFormat.ARGB32, false);
for (int i = 0; i < 6; ++i)
m_MagentaCubeTexture.SetPixel((CubemapFace)i, 0, 0, Color.magenta);
m_MagentaCubeTexture.Apply();
}
return m_MagentaCubeTexture;
}
}
static Cubemap m_WhiteCubeTexture;
public static Cubemap whiteCubeTexture
{
get
{
if (m_WhiteCubeTexture == null)
{
m_WhiteCubeTexture = new Cubemap(1, TextureFormat.ARGB32, false);
for (int i = 0; i < 6; ++i)
m_WhiteCubeTexture.SetPixel((CubemapFace)i, 0, 0, Color.white);
m_WhiteCubeTexture.Apply();
}
return m_WhiteCubeTexture;
}
}
static RenderTexture m_EmptyUAV;
public static RenderTexture emptyUAV
{
get
{
if (m_EmptyUAV == null)
{
m_EmptyUAV = new RenderTexture(1, 1, 0);
m_EmptyUAV.enableRandomWrite = true;
m_EmptyUAV.Create();
}
return m_EmptyUAV;
}
}
static Texture3D m_BlackVolumeTexture;
public static Texture3D blackVolumeTexture
{
get
{
if (m_BlackVolumeTexture == null)
{
Color[] colors = { Color.black };
m_BlackVolumeTexture = new Texture3D(1, 1, 1, TextureFormat.ARGB32, false);
m_BlackVolumeTexture.SetPixels(colors, 0);
m_BlackVolumeTexture.Apply();
}
return m_BlackVolumeTexture;
}
}
public static void ClearRenderTarget(CommandBuffer cmd, ClearFlag clearFlag, Color clearColor)
{
if (clearFlag != ClearFlag.None)
cmd.ClearRenderTarget((clearFlag & ClearFlag.Depth) != 0, (clearFlag & ClearFlag.Color) != 0, clearColor);
}
// Render Target Management.
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier buffer, ClearFlag clearFlag, Color clearColor, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
{
cmd.SetRenderTarget(buffer, miplevel, cubemapFace, depthSlice);
ClearRenderTarget(cmd, clearFlag, clearColor);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier buffer, ClearFlag clearFlag = ClearFlag.None, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
{
SetRenderTarget(cmd, buffer, clearFlag, clearColorAllBlack, miplevel, cubemapFace, depthSlice);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
{
SetRenderTarget(cmd, colorBuffer, depthBuffer, ClearFlag.None, clearColorAllBlack, miplevel, cubemapFace, depthSlice);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, ClearFlag clearFlag, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
{
SetRenderTarget(cmd, colorBuffer, depthBuffer, clearFlag, clearColorAllBlack, miplevel, cubemapFace, depthSlice);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, ClearFlag clearFlag, Color clearColor, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
{
cmd.SetRenderTarget(colorBuffer, depthBuffer, miplevel, cubemapFace, depthSlice);
ClearRenderTarget(cmd, clearFlag, clearColor);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier[] colorBuffers, RenderTargetIdentifier depthBuffer)
{
SetRenderTarget(cmd, colorBuffers, depthBuffer, ClearFlag.None, clearColorAllBlack);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier[] colorBuffers, RenderTargetIdentifier depthBuffer, ClearFlag clearFlag = ClearFlag.None)
{
SetRenderTarget(cmd, colorBuffers, depthBuffer, clearFlag, clearColorAllBlack);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier[] colorBuffers, RenderTargetIdentifier depthBuffer, ClearFlag clearFlag, Color clearColor)
{
cmd.SetRenderTarget(colorBuffers, depthBuffer);
ClearRenderTarget(cmd, clearFlag, clearColor);
}
// Explicit load and store actions
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier buffer, RenderBufferLoadAction loadAction, RenderBufferStoreAction storeAction, ClearFlag clearFlag, Color clearColor)
{
cmd.SetRenderTarget(buffer, loadAction, storeAction);
ClearRenderTarget(cmd, clearFlag, clearColor);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier buffer, RenderBufferLoadAction loadAction, RenderBufferStoreAction storeAction, ClearFlag clearFlag)
{
SetRenderTarget(cmd, buffer, loadAction, storeAction, clearFlag, clearColorAllBlack);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderBufferLoadAction colorLoadAction, RenderBufferStoreAction colorStoreAction,
RenderTargetIdentifier depthBuffer, RenderBufferLoadAction depthLoadAction, RenderBufferStoreAction depthStoreAction,
ClearFlag clearFlag, Color clearColor)
{
cmd.SetRenderTarget(colorBuffer, colorLoadAction, colorStoreAction, depthBuffer, depthLoadAction, depthStoreAction);
ClearRenderTarget(cmd, clearFlag, clearColor);
}
public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderBufferLoadAction colorLoadAction, RenderBufferStoreAction colorStoreAction,
RenderTargetIdentifier depthBuffer, RenderBufferLoadAction depthLoadAction, RenderBufferStoreAction depthStoreAction,
ClearFlag clearFlag)
{
SetRenderTarget(cmd, colorBuffer, colorLoadAction, colorStoreAction, depthBuffer, depthLoadAction, depthStoreAction, clearFlag, clearColorAllBlack);
}
public static string GetRenderTargetAutoName(int width, int height, int depth, RenderTextureFormat format, string name, bool mips = false, bool enableMSAA = false, MSAASamples msaaSamples = MSAASamples.None)
{
string result = string.Format("{0}_{1}x{2}", name, width, height);
if (depth > 1)
result = string.Format("{0}x{1}", result, depth);
if (mips)
result = string.Format("{0}_{1}", result, "Mips");
result = string.Format("{0}_{1}", result, format);
if (enableMSAA)
result = string.Format("{0}_{1}", result, msaaSamples.ToString());
return result;
}
public static string GetTextureAutoName(int width, int height, TextureFormat format, TextureDimension dim = TextureDimension.None, string name = "", bool mips = false, int depth = 0)
{
string temp;
if (depth == 0)
temp = string.Format("{0}x{1}{2}_{3}", width, height, mips ? "_Mips" : "", format);
else
temp = string.Format("{0}x{1}x{2}{3}_{4}", width, height, depth, mips ? "_Mips" : "", format);
temp = String.Format("{0}_{1}_{2}", name == "" ? "Texture" : name, (dim == TextureDimension.None) ? "" : dim.ToString(), temp);
return temp;
}
public static void ClearCubemap(CommandBuffer cmd, RenderTexture renderTexture, Color clearColor, bool clearMips = false)
{
int mipCount = 1;
if (renderTexture.useMipMap && clearMips)
{
mipCount = (int)Mathf.Log((float)renderTexture.width, 2.0f) + 1;
}
for (int i = 0; i < 6; ++i)
{
for (int mip = 0; mip < mipCount; ++mip)
{
SetRenderTarget(cmd, new RenderTargetIdentifier(renderTexture), ClearFlag.Color, clearColor, mip, (CubemapFace)i);
}
}
}
// Draws a full screen triangle as a faster alternative to drawing a full screen quad.
public static void DrawFullScreen(CommandBuffer commandBuffer, Material material,
MaterialPropertyBlock properties = null, int shaderPassId = 0)
{
commandBuffer.DrawProcedural(Matrix4x4.identity, material, shaderPassId, MeshTopology.Triangles, 3, 1, properties);
}
public static void DrawFullScreen(CommandBuffer commandBuffer, Material material,
RenderTargetIdentifier colorBuffer,
MaterialPropertyBlock properties = null, int shaderPassId = 0)
{
commandBuffer.SetRenderTarget(colorBuffer);
commandBuffer.DrawProcedural(Matrix4x4.identity, material, shaderPassId, MeshTopology.Triangles, 3, 1, properties);
}
public static void DrawFullScreen(CommandBuffer commandBuffer, Material material,
RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthStencilBuffer,
MaterialPropertyBlock properties = null, int shaderPassId = 0)
{
commandBuffer.SetRenderTarget(colorBuffer, depthStencilBuffer);
commandBuffer.DrawProcedural(Matrix4x4.identity, material, shaderPassId, MeshTopology.Triangles, 3, 1, properties);
}
public static void DrawFullScreen(CommandBuffer commandBuffer, Material material,
RenderTargetIdentifier[] colorBuffers, RenderTargetIdentifier depthStencilBuffer,
MaterialPropertyBlock properties = null, int shaderPassId = 0)
{
commandBuffer.SetRenderTarget(colorBuffers, depthStencilBuffer);
commandBuffer.DrawProcedural(Matrix4x4.identity, material, shaderPassId, MeshTopology.Triangles, 3, 1, properties);
}
// Important: the first RenderTarget must be created with 0 depth bits!
public static void DrawFullScreen(CommandBuffer commandBuffer, Material material,
RenderTargetIdentifier[] colorBuffers,
MaterialPropertyBlock properties = null, int shaderPassId = 0)
{
// It is currently not possible to have MRT without also setting a depth target.
// To work around this deficiency of the CommandBuffer.SetRenderTarget() API,
// we pass the first color target as the depth target. If it has 0 depth bits,
// no depth target ends up being bound.
DrawFullScreen(commandBuffer, material, colorBuffers, colorBuffers[0], properties, shaderPassId);
}
// Color space utilities
public static Color ConvertSRGBToActiveColorSpace(Color color)
{
return (QualitySettings.activeColorSpace == ColorSpace.Linear) ? color.linear : color;
}
public static Color ConvertLinearToActiveColorSpace(Color color)
{
return (QualitySettings.activeColorSpace == ColorSpace.Linear) ? color : color.gamma;
}
// Unity specifics
public static Material CreateEngineMaterial(string shaderPath)
{
Shader shader = Shader.Find(shaderPath);
if (shader == null)
{
Debug.LogError("Cannot create required material because shader " + shaderPath + " could not be found");
return null;
}
var mat = new Material(shader)
{
hideFlags = HideFlags.HideAndDontSave
};
return mat;
}
public static Material CreateEngineMaterial(Shader shader)
{
if (shader == null)
{
Debug.LogError("Cannot create required material because shader is null");
return null;
}
var mat = new Material(shader)
{
hideFlags = HideFlags.HideAndDontSave
};
return mat;
}
public static bool HasFlag<T>(T mask, T flag) where T : IConvertible
{
return (mask.ToUInt32(null) & flag.ToUInt32(null)) != 0;
}
public static void SetKeyword(CommandBuffer cmd, string keyword, bool state)
{
if (state)
cmd.EnableShaderKeyword(keyword);
else
cmd.DisableShaderKeyword(keyword);
}
// Caution: such a call should not be use interlaced with command buffer command, as it is immediate
public static void SetKeyword(Material m, string keyword, bool state)
{
if (state)
m.EnableKeyword(keyword);
else
m.DisableKeyword(keyword);
}
public static void SelectKeyword(Material material, string keyword1, string keyword2, bool enableFirst)
{
material.EnableKeyword(enableFirst ? keyword1 : keyword2);
material.DisableKeyword(enableFirst ? keyword2 : keyword1);
}
public static void SelectKeyword(Material material, string[] keywords, int enabledKeywordIndex)
{
material.EnableKeyword(keywords[enabledKeywordIndex]);
for (int i = 0; i < keywords.Length; i++)
{
if (i != enabledKeywordIndex)
material.DisableKeyword(keywords[i]);
}
}
public static void Destroy(UnityObject obj)
{
if (obj != null)
{
#if UNITY_EDITOR
if (Application.isPlaying)
UnityObject.Destroy(obj);
else
UnityObject.DestroyImmediate(obj);
#else
UnityObject.Destroy(obj);
#endif
}
}
static IEnumerable<Type> m_AssemblyTypes;
public static IEnumerable<Type> GetAllAssemblyTypes()
{
if (m_AssemblyTypes == null)
{
m_AssemblyTypes = AppDomain.CurrentDomain.GetAssemblies()
.SelectMany(t =>
{
// Ugly hack to handle mis-versioned dlls
var innerTypes = new Type[0];
try
{
innerTypes = t.GetTypes();
}
catch {}
return innerTypes;
});
}
return m_AssemblyTypes;
}
public static void Destroy(params UnityObject[] objs)
{
if (objs == null)
return;
foreach (var o in objs)
Destroy(o);
}
public static void SafeRelease(ComputeBuffer buffer)
{
if (buffer != null)
buffer.Release();
}
public static unsafe void QuickSort(uint[] arr, int left, int right)
{
fixed (uint* ptr = arr)
CoreUnsafeUtils.QuickSort<uint>(ptr, left, right);
}
public static Mesh CreateCubeMesh(Vector3 min, Vector3 max)
{
Mesh mesh = new Mesh();
Vector3[] vertices = new Vector3[8];
vertices[0] = new Vector3(min.x, min.y, min.z);
vertices[1] = new Vector3(max.x, min.y, min.z);
vertices[2] = new Vector3(max.x, max.y, min.z);
vertices[3] = new Vector3(min.x, max.y, min.z);
vertices[4] = new Vector3(min.x, min.y, max.z);
vertices[5] = new Vector3(max.x, min.y, max.z);
vertices[6] = new Vector3(max.x, max.y, max.z);
vertices[7] = new Vector3(min.x, max.y, max.z);
mesh.vertices = vertices;
int[] triangles = new int[36];
triangles[0] = 0; triangles[1] = 2; triangles[2] = 1;
triangles[3] = 0; triangles[4] = 3; triangles[5] = 2;
triangles[6] = 1; triangles[7] = 6; triangles[8] = 5;
triangles[9] = 1; triangles[10] = 2; triangles[11] = 6;
triangles[12] = 5; triangles[13] = 7; triangles[14] = 4;
triangles[15] = 5; triangles[16] = 6; triangles[17] = 7;
triangles[18] = 4; triangles[19] = 3; triangles[20] = 0;
triangles[21] = 4; triangles[22] = 7; triangles[23] = 3;
triangles[24] = 3; triangles[25] = 6; triangles[26] = 2;
triangles[27] = 3; triangles[28] = 7; triangles[29] = 6;
triangles[30] = 4; triangles[31] = 1; triangles[32] = 5;
triangles[33] = 4; triangles[34] = 0; triangles[35] = 1;
mesh.triangles = triangles;
return mesh;
}
public static void DisplayUnsupportedMessage(string msg)
{
Debug.LogError(msg);
#if UNITY_EDITOR
foreach (UnityEditor.SceneView sv in Resources.FindObjectsOfTypeAll(typeof(UnityEditor.SceneView)))
sv.ShowNotification(new GUIContent(msg));
#endif
}
public static void DisplayUnsupportedAPIMessage()
{
// If we are in the editor they are many possible targets that does not matches the current OS so we use the active build target instead
#if UNITY_EDITOR
string currentPlatform = UnityEditor.EditorUserBuildSettings.activeBuildTarget.ToString();
#else
string currentPlatform = SystemInfo.operatingSystem;
#endif
string msg = "Platform " + currentPlatform + " with device " + SystemInfo.graphicsDeviceType.ToString() + " is not supported, no rendering will occur";
DisplayUnsupportedMessage(msg);
}
public static void DisplayUnsupportedXRMessage()
{
string msg = "AR/VR devices are not supported, no rendering will occur";
DisplayUnsupportedMessage(msg);
}
// Returns 'true' if "Animated Materials" are enabled for the view associated with the given camera.
public static bool AreAnimatedMaterialsEnabled(Camera camera)
{
bool animateMaterials = true;
#if UNITY_EDITOR
animateMaterials = Application.isPlaying;
if (camera.cameraType == CameraType.SceneView)
{
animateMaterials = false;
// Determine whether the "Animated Materials" checkbox is checked for the current view.
foreach (UnityEditor.SceneView sv in Resources.FindObjectsOfTypeAll(typeof(UnityEditor.SceneView)))
{
if (sv.camera == camera && sv.sceneViewState.showMaterialUpdate)
{
animateMaterials = true;
break;
}
}
}
else if (camera.cameraType == CameraType.Preview)
{
animateMaterials = false;
// Determine whether the "Animated Materials" checkbox is checked for the current view.
foreach (UnityEditor.MaterialEditor med in Resources.FindObjectsOfTypeAll(typeof(UnityEditor.MaterialEditor)))
{
// Warning: currently, there's no way to determine whether a given camera corresponds to this MaterialEditor.
// Therefore, if at least one of the visible MaterialEditors is in Play Mode, all of them will play.
if (med.isVisible && med.RequiresConstantRepaint())
{
animateMaterials = true;
break;
}
}
}
// TODO: how to handle reflection views? We don't know the parent window they are being rendered into,
// so we don't know whether we can animate them...
//
// IMHO, a better solution would be:
// A window invokes a camera render. The camera knows which window called it, so it can query its properies
// (such as animated materials). This camera provides the space-time position. It should also be able
// to access the rendering settings somehow. Using this information, it is then able to construct the
// primary view with information about camera-relative rendering, LOD, time, rendering passes/features
// enabled, etc. We then render this view. It can have multiple sub-views (shadows, reflections).
// They inherit all the properties of the primary view, but also have the ability to override them
// (e.g. primary cam pos and time are retained, matrices are modified, SSS and tessellation are disabled).
// These views can then have multiple sub-views (probably not practical for games),
// which simply amounts to a recursive call, and then the story repeats itself.
//
// TLDR: we need to know the caller and its status/properties to make decisions.
#endif
return animateMaterials;
}
public static bool IsSceneViewFogEnabled(Camera camera)
{
bool fogEnable = true;
#if UNITY_EDITOR
if (camera.cameraType == CameraType.SceneView)
{
fogEnable = false;
// Determine whether the "Animated Materials" checkbox is checked for the current view.
foreach (UnityEditor.SceneView sv in Resources.FindObjectsOfTypeAll(typeof(UnityEditor.SceneView)))
{
if (sv.camera == camera && sv.sceneViewState.showFog)
{
fogEnable = true;
break;
}
}
}
#endif
return fogEnable;
}
}
}