Помогите пожалуйтса дописать стандартный пост-процесс шейдер блюра, чтобы можно было использовать маску для его интенсивности.
Картинка для наглядности
Скрытый текст:
Код эффекта:
Синтаксис:
Используется csharp
using UnityEngine;
using System.Collections;
[ExecuteInEditMode]
[AddComponentMenu("Image Effects/Blur")]
public class BlurEffect : MonoBehaviour
{
/// Blur iterations - larger number means more blur.
public int iterations = 3;
/// Blur spread for each iteration. Lower values
/// give better looking blur, but require more iterations to
/// get large blurs. Value is usually between 0.5 and 1.0.
public float blurSpread = 0.6f;
// --------------------------------------------------------
// The blur iteration shader.
// Basically it just takes 4 texture samples and averages them.
// By applying it repeatedly and spreading out sample locations
// we get a Gaussian blur approximation.
private static string blurMatString =
@"Shader ""BlurConeTap"" {
Properties { _MainTex ("""", any) = """" {} }
SubShader {
Pass {
ZTest Always Cull Off ZWrite Off Fog { Mode Off }
SetTexture [_MainTex] {constantColor (0,0,0,0.25) combine texture * constant alpha}
SetTexture [_MainTex] {constantColor (0,0,0,0.25) combine texture * constant + previous}
SetTexture [_MainTex] {constantColor (0,0,0,0.25) combine texture * constant + previous}
SetTexture [_MainTex] {constantColor (0,0,0,0.25) combine texture * constant + previous}
}
}
Fallback off
}";
static Material m_Material = null;
protected static Material material {
get {
if (m_Material == null) {
m_Material = new Material( blurMatString );
m_Material.hideFlags = HideFlags.HideAndDontSave;
m_Material.shader.hideFlags = HideFlags.HideAndDontSave;
}
return m_Material;
}
}
protected void OnDisable() {
if( m_Material ) {
DestroyImmediate( m_Material.shader );
DestroyImmediate( m_Material );
}
}
// --------------------------------------------------------
protected void Start()
{
// Disable if we don't support image effects
if (!SystemInfo.supportsImageEffects) {
enabled = false;
return;
}
// Disable if the shader can't run on the users graphics card
if (!material.shader.isSupported) {
enabled = false;
return;
}
}
// Performs one blur iteration.
public void FourTapCone (RenderTexture source, RenderTexture dest, int iteration)
{
float off = 0.5f + iteration*blurSpread;
Graphics.BlitMultiTap (source, dest, material,
new Vector2(-off, -off),
new Vector2(-off, off),
new Vector2( off, off),
new Vector2( off, -off)
);
}
// Downsamples the texture to a quarter resolution.
private void DownSample4x (RenderTexture source, RenderTexture dest)
{
float off = 1.0f;
Graphics.BlitMultiTap (source, dest, material,
new Vector2(-off, -off),
new Vector2(-off, off),
new Vector2( off, off),
new Vector2( off, -off)
);
}
// Called by the camera to apply the image effect
void OnRenderImage (RenderTexture source, RenderTexture destination) {
RenderTexture buffer = RenderTexture.GetTemporary(source.width/4, source.height/4, 0);
RenderTexture buffer2 = RenderTexture.GetTemporary(source.width/4, source.height/4, 0);
// Copy source to the 4x4 smaller texture.
DownSample4x (source, buffer);
// Blur the small texture
bool oddEven = true;
for(int i = 0; i < iterations; i++)
{
if( oddEven )
FourTapCone (buffer, buffer2, i);
else
FourTapCone (buffer2, buffer, i);
oddEven = !oddEven;
}
if( oddEven ) Graphics.Blit(buffer, destination);
else Graphics.Blit(buffer2, destination);
RenderTexture.ReleaseTemporary(buffer);
RenderTexture.ReleaseTemporary(buffer2);
}
}
using System.Collections;
[ExecuteInEditMode]
[AddComponentMenu("Image Effects/Blur")]
public class BlurEffect : MonoBehaviour
{
/// Blur iterations - larger number means more blur.
public int iterations = 3;
/// Blur spread for each iteration. Lower values
/// give better looking blur, but require more iterations to
/// get large blurs. Value is usually between 0.5 and 1.0.
public float blurSpread = 0.6f;
// --------------------------------------------------------
// The blur iteration shader.
// Basically it just takes 4 texture samples and averages them.
// By applying it repeatedly and spreading out sample locations
// we get a Gaussian blur approximation.
private static string blurMatString =
@"Shader ""BlurConeTap"" {
Properties { _MainTex ("""", any) = """" {} }
SubShader {
Pass {
ZTest Always Cull Off ZWrite Off Fog { Mode Off }
SetTexture [_MainTex] {constantColor (0,0,0,0.25) combine texture * constant alpha}
SetTexture [_MainTex] {constantColor (0,0,0,0.25) combine texture * constant + previous}
SetTexture [_MainTex] {constantColor (0,0,0,0.25) combine texture * constant + previous}
SetTexture [_MainTex] {constantColor (0,0,0,0.25) combine texture * constant + previous}
}
}
Fallback off
}";
static Material m_Material = null;
protected static Material material {
get {
if (m_Material == null) {
m_Material = new Material( blurMatString );
m_Material.hideFlags = HideFlags.HideAndDontSave;
m_Material.shader.hideFlags = HideFlags.HideAndDontSave;
}
return m_Material;
}
}
protected void OnDisable() {
if( m_Material ) {
DestroyImmediate( m_Material.shader );
DestroyImmediate( m_Material );
}
}
// --------------------------------------------------------
protected void Start()
{
// Disable if we don't support image effects
if (!SystemInfo.supportsImageEffects) {
enabled = false;
return;
}
// Disable if the shader can't run on the users graphics card
if (!material.shader.isSupported) {
enabled = false;
return;
}
}
// Performs one blur iteration.
public void FourTapCone (RenderTexture source, RenderTexture dest, int iteration)
{
float off = 0.5f + iteration*blurSpread;
Graphics.BlitMultiTap (source, dest, material,
new Vector2(-off, -off),
new Vector2(-off, off),
new Vector2( off, off),
new Vector2( off, -off)
);
}
// Downsamples the texture to a quarter resolution.
private void DownSample4x (RenderTexture source, RenderTexture dest)
{
float off = 1.0f;
Graphics.BlitMultiTap (source, dest, material,
new Vector2(-off, -off),
new Vector2(-off, off),
new Vector2( off, off),
new Vector2( off, -off)
);
}
// Called by the camera to apply the image effect
void OnRenderImage (RenderTexture source, RenderTexture destination) {
RenderTexture buffer = RenderTexture.GetTemporary(source.width/4, source.height/4, 0);
RenderTexture buffer2 = RenderTexture.GetTemporary(source.width/4, source.height/4, 0);
// Copy source to the 4x4 smaller texture.
DownSample4x (source, buffer);
// Blur the small texture
bool oddEven = true;
for(int i = 0; i < iterations; i++)
{
if( oddEven )
FourTapCone (buffer, buffer2, i);
else
FourTapCone (buffer2, buffer, i);
oddEven = !oddEven;
}
if( oddEven ) Graphics.Blit(buffer, destination);
else Graphics.Blit(buffer2, destination);
RenderTexture.ReleaseTemporary(buffer);
RenderTexture.ReleaseTemporary(buffer2);
}
}
