You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
4.0 KiB
127 lines
4.0 KiB
using UnityEngine;
|
|
using System.Collections;
|
|
|
|
[ExecuteInEditMode]
|
|
[AddComponentMenu("RapidBlurEffect")]
|
|
public class RapidBlurEffect : MonoBehaviour
|
|
{
|
|
#region Variables
|
|
|
|
private string ShaderName = "RapidBlurEffect";
|
|
public Shader CurShader;
|
|
private Material CurMaterial;
|
|
|
|
public static int ChangeValue;
|
|
public static float ChangeValue2;
|
|
public static int ChangeValue3;
|
|
|
|
[Range(0, 6), Tooltip("[降采样次数]向下采样的次数。此值越大,则采样间隔越大,需要处理的像素点越少,运行速度越快。")]
|
|
public int DownSampleNum = 2;
|
|
[Range(0.0f, 20.0f), Tooltip("[模糊扩散度]进行高斯模糊时，相邻像素点的间隔。此值越大相邻像素间隔越远，图像越模糊。但过大的值会导致失真。")]
|
|
public float BlurSpreadSize = 3.0f;
|
|
[Range(0, 8), Tooltip("[迭代次数]此值越大,则模糊操作的迭代次数越多，模糊效果越好，但消耗越大。")]
|
|
public int BlurIterations = 3;
|
|
|
|
#endregion
|
|
|
|
#region MaterialGetAndSet
|
|
Material material
|
|
{
|
|
get
|
|
{
|
|
if (CurMaterial == null)
|
|
{
|
|
CurMaterial = new Material(CurShader);
|
|
CurMaterial.hideFlags = HideFlags.HideAndDontSave;
|
|
}
|
|
return CurMaterial;
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#region Functions
|
|
void Start()
|
|
{
|
|
ChangeValue = DownSampleNum;
|
|
ChangeValue2 = BlurSpreadSize;
|
|
ChangeValue3 = BlurIterations;
|
|
CurShader = Shader.Find(ShaderName);
|
|
if (!SystemInfo.supportsImageEffects)
|
|
{
|
|
enabled = false;
|
|
return;
|
|
}
|
|
}
|
|
|
|
void OnRenderImage(RenderTexture sourceTexture, RenderTexture destTexture)
|
|
{
|
|
if (CurShader != null)
|
|
{
|
|
float widthMod = 1.0f / (1.0f * (1 << DownSampleNum));
|
|
material.SetFloat("_DownSampleValue", BlurSpreadSize * widthMod);
|
|
sourceTexture.filterMode = FilterMode.Bilinear;
|
|
int renderWidth = sourceTexture.width >> DownSampleNum;
|
|
int renderHeight = sourceTexture.height >> DownSampleNum;
|
|
|
|
RenderTexture renderBuffer = RenderTexture.GetTemporary(renderWidth, renderHeight, 0, sourceTexture.format);
|
|
renderBuffer.filterMode = FilterMode.Bilinear;
|
|
Graphics.Blit(sourceTexture, renderBuffer, material, 0);
|
|
|
|
for (int i = 0; i < BlurIterations; i++)
|
|
{
|
|
float iterationOffs = (i * 1.0f);
|
|
material.SetFloat("_DownSampleValue", BlurSpreadSize * widthMod + iterationOffs);
|
|
|
|
RenderTexture tempBuffer = RenderTexture.GetTemporary(renderWidth, renderHeight, 0, sourceTexture.format);
|
|
Graphics.Blit(renderBuffer, tempBuffer, material, 1);
|
|
RenderTexture.ReleaseTemporary(renderBuffer);
|
|
renderBuffer = tempBuffer;
|
|
|
|
tempBuffer = RenderTexture.GetTemporary(renderWidth, renderHeight, 0, sourceTexture.format);
|
|
Graphics.Blit(renderBuffer, tempBuffer, CurMaterial, 2);
|
|
RenderTexture.ReleaseTemporary(renderBuffer);
|
|
renderBuffer = tempBuffer;
|
|
}
|
|
|
|
Graphics.Blit(renderBuffer, destTexture);
|
|
RenderTexture.ReleaseTemporary(renderBuffer);
|
|
}
|
|
else
|
|
{
|
|
Graphics.Blit(sourceTexture, destTexture);
|
|
}
|
|
}
|
|
|
|
void OnValidate()
|
|
{
|
|
ChangeValue = DownSampleNum;
|
|
ChangeValue2 = BlurSpreadSize;
|
|
ChangeValue3 = BlurIterations;
|
|
}
|
|
|
|
void Update()
|
|
{
|
|
if (Application.isPlaying)
|
|
{
|
|
DownSampleNum = ChangeValue;
|
|
BlurSpreadSize = ChangeValue2;
|
|
BlurIterations = ChangeValue3;
|
|
}
|
|
#if UNITY_EDITOR
|
|
if (Application.isPlaying != true)
|
|
{
|
|
CurShader = Shader.Find(ShaderName);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void OnDisable()
|
|
{
|
|
if (CurMaterial)
|
|
{
|
|
DestroyImmediate(CurMaterial);
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
|