1 files changed, 159 insertions, 0 deletions
diff --git a/engine/src/core-effects/Common/MatDefs/SSAO/ssaoBlur.frag b/engine/src/core-effects/Common/MatDefs/SSAO/ssaoBlur.frag
new file mode 100644
index 0000000..48f4a2f
--- /dev/null
+++ b/engine/src/core-effects/Common/MatDefs/SSAO/ssaoBlur.frag
@@ -0,0 +1,159 @@
+uniform sampler2D m_Texture;
+uniform sampler2D m_DepthTexture;
+uniform sampler2D m_SSAOMap;
+uniform vec2 g_Resolution;
+uniform bool m_UseOnlyAo;
+uniform bool m_UseAo;
+uniform float m_XScale;
+uniform float m_YScale;
+uniform vec2 m_FrustumNearFar;
+
+varying vec2 texCoord;
+
+vec4 getColor(vec4 color){
+
+    
+    #ifdef USE_ONLY_AO
+        return color;
+    #endif
+    #ifdef USE_AO
+        return texture2D(m_Texture,texCoord)* color;
+    #endif
+    
+    return texture2D(m_Texture,texCoord);
+
+}
+
+float readDepth(in vec2 uv){
+    float depthv =texture2D(m_DepthTexture,uv).r;
+    return (2.0 * m_FrustumNearFar.x) / (m_FrustumNearFar.y + m_FrustumNearFar.x - depthv* (m_FrustumNearFar.y-m_FrustumNearFar.x));
+}
+
+ const float epsilon = 0.005;
+
+
+/*
+    const int kernelSize=7;
+   
+    vec4 bilateralFilter() {
+        vec4 color = vec4(0.0);
+
+        vec2 sample;
+        float sum = 0.0;
+        float coefZ;
+        float Zp = readDepth(texCoord);
+
+        for(int i = -(kernelSize-1); i <= (kernelSize-1); i+=2) {
+            for(int j = -(kernelSize-1); j <= (kernelSize-1); j+=2) {
+                  sample = texCoord + vec2(i,j) / g_Resolution;           
+                float zTmp =readDepth(sample);
+                coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+                sum += coefZ;
+
+                color += coefZ * texture2D(m_SSAOMap,sample);
+             
+            }
+        }
+
+        return color / sum;
+    }
+*/
+
+    vec4 convolutionFilter(){
+           vec4 sum = vec4(0.0);
+
+            float x = texCoord.x;
+            float y = texCoord.y;
+
+            float xScale = m_XScale;
+            float yScale = m_YScale;
+       
+            float zsum = 1.0;
+        float Zp =readDepth(texCoord);
+
+
+        vec2 sample = vec2(x - 2.0 * xScale, y - 2.0 * yScale);           
+        float zTmp =readDepth(sample);
+        float coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+        sample = vec2(x - 0.0 * xScale, y - 2.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+        sample = vec2(x + 2.0 * xScale, y - 2.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+        sample = vec2(x - 1.0 * xScale, y - 1.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+        sample = vec2(x + 1.0 * xScale, y - 1.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+  
+        sample = vec2(x - 2.0 * xScale, y - 0.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+        sample = vec2(x + 2.0 * xScale, y - 0.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+        sample = vec2(x - 1.0 * xScale, y + 1.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+   
+        sample = vec2(x + 1.0 * xScale, y + 1.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+        sample = vec2(x - 2.0 * xScale, y + 2.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+  
+        sample = vec2(x - 0.0 * xScale, y + 2.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+        sample = vec2(x + 2.0 * xScale, y + 2.0 * yScale);           
+        zTmp =readDepth(sample);
+        coefZ = 1.0 / (epsilon + abs(Zp - zTmp));               
+        zsum += coefZ;
+        sum += coefZ* texture2D( m_SSAOMap, sample);
+
+
+        return  sum / zsum;
+    }
+
+
+    void main(){
+        //  float depth =texture2D(m_DepthTexture,uv).r;
+
+       gl_FragColor=getColor(convolutionFilter());
+      // gl_FragColor=getColor(bilateralFilter());
+      //  gl_FragColor=texture2D(m_SSAOMap,texCoord);
+
+    }
+\ No newline at end of file