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public Shader shader; + + [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; + + private Camera m_camera; + private RenderTexture m_renderTexture; + private Material m_material; + private string m_shaderName = "UI/UIGaussianBlurLayer"; + private Color m_color; + public float targetAlpha = 1f; + private static readonly int DownSampleValue = Shader.PropertyToID("_DownSampleValue"); + + #region MaterialGetAndSet + + Material material + { + get + { + if (m_material == null) + { + m_material = new Material(shader); + m_material.hideFlags = HideFlags.HideAndDontSave; + } + + return m_material; + } + } + + #endregion + + void Start() + { + m_camera = GetComponent(); + if (shader == null) + { + shader = Shader.Find(m_shaderName); + if (shader == null) + { + var dodShader = new TShader(m_shaderName); + if (dodShader.Shader != null) + { + shader = dodShader.Shader; + } + } + } + + m_color = rawImage.color; + m_color.a = 1f; + } + + private void Cleanup() + { + if (m_material) + { + Object.DestroyImmediate(m_material); + } + + if (rawImage.texture) + { + RenderTexture.ReleaseTemporary(m_renderTexture); + } + } + + private void OnEnable() + { + Cleanup(); + } + + private void OnDestroy() + { + Cleanup(); + } + + void OnRenderImage(RenderTexture src, RenderTexture dest) + { + Graphics.Blit(src, dest); + + if (!gameObject.activeInHierarchy && enabled) + { + return; + } + + if (!m_camera || !shader || m_renderTexture != null) + { + return; + } + + float widthMod = 1.0f / (1.0f * (1 << DownSampleNum)); + material.SetFloat(DownSampleValue, BlurSpreadSize * widthMod); + + int renderWidth = src.width >> DownSampleNum; + int renderHeight = src.height >> DownSampleNum; + m_renderTexture = RenderTexture.GetTemporary(renderWidth, renderHeight, 0, RenderTextureFormat.RGB111110Float); + m_renderTexture.filterMode = FilterMode.Bilinear; + + Graphics.Blit(src, m_renderTexture, material, 0); + for (int i = 0; i < BlurIterations; i++) + { + //【2.1】Shader参数赋值 + //迭代偏移量参数 + float iterationOffs = (i * 1.0f); + //Shader的降采样参数赋值 + material.SetFloat(DownSampleValue, BlurSpreadSize * widthMod + iterationOffs); + // 【2.2】处理Shader的通道1，垂直方向模糊处理 || Pass1,for vertical blur + // 定义一个临时渲染的缓存tempBuffer + RenderTexture tempBuffer = RenderTexture.GetTemporary(renderWidth, renderHeight, 0, RenderTextureFormat.RGB111110Float); + // 拷贝rawTexture中的渲染数据到tempBuffer,并仅绘制指定的pass1的纹理数据 + Graphics.Blit(m_renderTexture, tempBuffer, material, 1); + // 清空rawTexture + RenderTexture.ReleaseTemporary(m_renderTexture); + // 将tempBuffer赋给rawTexture，此时rawTexture里面pass0和pass1的数据已经准备好 + m_renderTexture = tempBuffer; + // 【2.3】处理Shader的通道2，竖直方向模糊处理 || Pass2,for horizontal blur + // 获取临时渲染纹理 + tempBuffer = RenderTexture.GetTemporary(renderWidth, renderHeight, 0, RenderTextureFormat.RGB111110Float); + // 拷贝rawTexture中的渲染数据到tempBuffer,并仅绘制指定的pass2的纹理数据 + Graphics.Blit(m_renderTexture, tempBuffer, m_material, 2); + //【2.4】得到pass0、pass1和pass2的数据都已经准备好的rawTexture + // 再次清空rawTexture + RenderTexture.ReleaseTemporary(m_renderTexture); + // 再次将tempBuffer赋给rawTexture，此时rawTexture里面pass0、pass1和pass2的数据都已经准备好 + m_renderTexture = tempBuffer; + } + + rawImage.texture = m_renderTexture; + m_color.a = targetAlpha; + rawImage.color = m_color; + m_camera.enabled = false; + enabled = false; + } + } +} \ No newline at end of file diff --git a/Assets/TEngine/Runtime/Extension/UGUIExtension/UIGaussianBlurLayer/UIGaussianBlurLayer.cs.meta b/Assets/TEngine/Runtime/Extension/UGUIExtension/UIGaussianBlurLayer/UIGaussianBlurLayer.cs.meta new file mode 100644 index 00000000..8eeed68f --- /dev/null +++ b/Assets/TEngine/Runtime/Extension/UGUIExtension/UIGaussianBlurLayer/UIGaussianBlurLayer.cs.meta @@ -0,0 +1,11 @@ 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00000000..1ffa4449 --- /dev/null +++ b/Assets/TEngine/Runtime/Extension/UGUIExtension/UIGaussianBlurLayer/UIGaussianBlurLayer/UIGaussianBlurLayer.shader @@ -0,0 +1,232 @@ +// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)' + +Shader "UI/UIGaussianBlurLayer" +{ + //-----------------------------------【属性 || Properties】------------------------------------------ + Properties + { + //主纹理 + _MainTex("Base (RGB)", 2D) = "white" {} + } + + //----------------------------------【子着色器 || SubShader】--------------------------------------- + SubShader + { + ZWrite Off + Blend Off + + //---------------------------------------【通道0 || Pass 0】------------------------------------ + //通道0：降采样通道 ||Pass 0: Down Sample Pass + Pass + { + ZTest Off + Cull Off + + CGPROGRAM + + //指定此通道的顶点着色器为vert_DownSmpl + #pragma vertex vert_DownSmpl + //指定此通道的像素着色器为frag_DownSmpl + #pragma fragment frag_DownSmpl + + ENDCG + } + + //---------------------------------------【通道1 || Pass 1】------------------------------------ + //通道1：垂直方向模糊处理通道 ||Pass 1: Vertical Pass + Pass + { + ZTest Always + Cull Off + + CGPROGRAM + + //指定此通道的顶点着色器为vert_BlurVertical + #pragma vertex vert_BlurVertical + //指定此通道的像素着色器为frag_Blur + #pragma fragment frag_Blur + + ENDCG + } + + //---------------------------------------【通道2 || Pass 2】------------------------------------ + //通道2：水平方向模糊处理通道 ||Pass 2: Horizontal Pass + Pass + { + ZTest Always + Cull Off + + CGPROGRAM + + //指定此通道的顶点着色器为vert_BlurHorizontal + #pragma vertex vert_BlurHorizontal + //指定此通道的像素着色器为frag_Blur + #pragma fragment frag_Blur + + ENDCG + } + } + + //-------------------------CG着色语言声明部分 || Begin CG Include Part---------------------- + CGINCLUDE + + //【1】头文件包含 || include + #include "UnityCG.cginc" + + //【2】变量声明 || Variable Declaration + sampler2D _MainTex; + //UnityCG.cginc中内置的变量，纹理中的单像素尺寸|| it is the size of a texel of the texture + uniform half4 _MainTex_TexelSize; + //C#脚本控制的变量 || Parameter + uniform half _DownSampleValue; + + //【3】顶点输入结构体 || Vertex Input Struct + struct VertexInput + { + //顶点位置坐标 + float4 vertex : POSITION; + //一级纹理坐标 + half2 texcoord : TEXCOORD0; + }; + + //【4】降采样输出结构体 || Vertex Input Struct + struct VertexOutput_DownSmpl + { + //像素位置坐标 + float4 pos : SV_POSITION; + //一级纹理坐标（右上） + half2 uv20 : TEXCOORD0; + //二级纹理坐标（左下） + half2 uv21 : TEXCOORD1; + //三级纹理坐标（右下） + half2 uv22 : TEXCOORD2; + //四级纹理坐标（左上） + half2 uv23 : TEXCOORD3; + }; + + //【5】准备高斯模糊权重矩阵参数7x4的矩阵 || Gauss Weight + static const half4 GaussWeight[7] = + { + half4(0.0205,0.0205,0.0205,0), + half4(0.0855,0.0855,0.0855,0), + half4(0.232,0.232,0.232,0), + half4(0.324,0.324,0.324,1), + half4(0.232,0.232,0.232,0), + half4(0.0855,0.0855,0.0855,0), + half4(0.0205,0.0205,0.0205,0) + }; + + //【6】顶点着色函数 || Vertex Shader Function + VertexOutput_DownSmpl vert_DownSmpl(VertexInput v) + { + //【6.1】实例化一个降采样输出结构 + VertexOutput_DownSmpl o; + + //【6.2】填充输出结构 + //将三维空间中的坐标投影到二维窗口 + o.pos = UnityObjectToClipPos(v.vertex); + //对图像的降采样：取像素上下左右周围的点，分别存于四级纹理坐标中 + o.uv20 = v.texcoord + _MainTex_TexelSize.xy* half2(0.5h, 0.5h);; + o.uv21 = v.texcoord + _MainTex_TexelSize.xy * half2(-0.5h, -0.5h); + o.uv22 = v.texcoord + _MainTex_TexelSize.xy * half2(0.5h, -0.5h); + o.uv23 = v.texcoord + _MainTex_TexelSize.xy * half2(-0.5h, 0.5h); + + //【6.3】返回最终的输出结果 + return o; + } + + //【7】片段着色函数 || Fragment Shader Function + fixed4 frag_DownSmpl(VertexOutput_DownSmpl i) : SV_Target + { + //【7.1】定义一个临时的颜色值 + fixed4 color = (0,0,0,0); + + //【7.2】四个相邻像素点处的纹理值相加 + color += tex2D(_MainTex, i.uv20); + color += tex2D(_MainTex, i.uv21); + color += tex2D(_MainTex, i.uv22); + color += tex2D(_MainTex, i.uv23); + + //【7.3】返回最终的平均值 + return color / 4; + } + + //【8】顶点输入结构体 || Vertex Input Struct + struct VertexOutput_Blur + { + //像素坐标 + float4 pos : SV_POSITION; + //一级纹理（纹理坐标） + half4 uv : TEXCOORD0; + //二级纹理（偏移量） + half2 offset : TEXCOORD1; + }; + + //【9】顶点着色函数 || Vertex Shader Function + VertexOutput_Blur vert_BlurHorizontal(VertexInput v) + { + //【9.1】实例化一个输出结构 + VertexOutput_Blur o; + + //【9.2】填充输出结构 + //将三维空间中的坐标投影到二维窗口 + o.pos = UnityObjectToClipPos(v.vertex); + //纹理坐标 + o.uv = half4(v.texcoord.xy, 1, 1); + //计算X方向的偏移量 + o.offset = _MainTex_TexelSize.xy * half2(1.0, 0.0) * _DownSampleValue; + + //【9.3】返回最终的输出结果 + return o; + } + + //【10】顶点着色函数 || Vertex Shader Function + VertexOutput_Blur vert_BlurVertical(VertexInput v) + { + //【10.1】实例化一个输出结构 + VertexOutput_Blur o; + + //【10.2】填充输出结构 + //将三维空间中的坐标投影到二维窗口 + o.pos = UnityObjectToClipPos(v.vertex); + //纹理坐标 + o.uv = half4(v.texcoord.xy, 1, 1); + //计算Y方向的偏移量 + o.offset = _MainTex_TexelSize.xy * half2(0.0, 1.0) * _DownSampleValue; + + //【10.3】返回最终的输出结果 + return o; + } + + //【11】片段着色函数 || Fragment Shader Function + half4 frag_Blur(VertexOutput_Blur i) : SV_Target + { + //【11.1】获取原始的uv坐标 + half2 uv = i.uv.xy; + + //【11.2】获取偏移量 + half2 OffsetWidth = i.offset; + //从中心点偏移3个间隔，从最左或最上开始加权累加 + half2 uv_withOffset = uv - OffsetWidth * 3.0; + + //【11.3】循环获取加权后的颜色值 + half4 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