Much better AO.

Normand Briere

2018-10-27 d34fd9341c61d13677e029cb187d4dacff5e44ea

 CameraPane.java
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@@ -15115,13 +15115,19 @@
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             gl.glFlush();
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             /**/
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-            gl.glReadPixels(0, 0, OCCLUSION_SIZE, OCCLUSION_SIZE, GL.GL_BGRA, GL.GL_UNSIGNED_INT_8_8_8_8_REV, occlusionsizebuffer);
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+            gl.glReadPixels(0, 0, OCCLUSION_SIZE, OCCLUSION_SIZE, GL.GL_DEPTH_COMPONENT, GL.GL_FLOAT, occlusionsizebuffer);
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-            int[] pixels = occlusionsizebuffer.array();
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+            float[] pixels = occlusionsizebuffer.array();
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             double r = 0, g = 0, b = 0;
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             double count = 0;
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+            
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+        gl.glGetDoublev(gl.GL_PROJECTION_MATRIX, tempmat2, 0);
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+                                
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+            float mindepth = 1;
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+            
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+            double FACTOR = 1;
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             for (int i = 0; i < pixels.length; i++)
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             {
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@@ -15206,7 +15212,7 @@
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                 double scale = ray.z; // 1; // cos
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-                int p = pixels[newindex];
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+                float depth = pixels[newindex];
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                 /*
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                 int newindex2 = (x + 1) * OCCLUSION_SIZE + y;
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@@ -15230,10 +15236,23 @@
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                 scale = (1 - modu) * modv;
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                  */
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-                r += ((p >> 16) & 0xFF) * scale / 255;
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-                g += ((p >> 8) & 0xFF) * scale / 255;
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-                b += (p & 0xFF) * scale / 255;
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+                //r += ((p >> 16) & 0xFF) * scale / 255;
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+                //g += ((p >> 8) & 0xFF) * scale / 255;
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+                //b += (p & 0xFF) * scale / 255;
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+                
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+                if (mindepth > depth)
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+                {
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+                    mindepth = depth;
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+                }
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15248
+                double z_eye = tempmat2[3*4 + 2] / (depth * -2.0 + 1.0 - tempmat2[2*4 + 2]);
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+                
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+                double factor = 1 - Math.exp(-z_eye * z_eye / FACTOR);
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+                
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+                r += factor * scale;
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+                g += factor * scale;
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+                b += factor * scale;
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+                
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                 count += scale;
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             }
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..
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@@ -15407,7 +15426,8 @@
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     static IntBuffer texturesizebuffer = IntBuffer.allocate(TEX_SIZE * TEX_SIZE);
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     static IntBuffer selectsizebuffer = IntBuffer.allocate(SELECT_SIZE * SELECT_SIZE);
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     static java.nio.FloatBuffer pointselectsizebuffer = java.nio.FloatBuffer.allocate(SELECT_SIZE * SELECT_SIZE);
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-    static IntBuffer occlusionsizebuffer = IntBuffer.allocate(OCCLUSION_SIZE * OCCLUSION_SIZE);
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+    //static IntBuffer occlusionsizebuffer = IntBuffer.allocate(OCCLUSION_SIZE * OCCLUSION_SIZE);
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+    static java.nio.FloatBuffer occlusionsizebuffer = java.nio.FloatBuffer.allocate(OCCLUSION_SIZE * OCCLUSION_SIZE);
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     static BufferedImage bufimage = new BufferedImage(TEX_SIZE, TEX_SIZE, BufferedImage.TYPE_INT_RGB);
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     static BufferedImage textest = new cBufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
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     static java.util.Vector<BufferedImage> billboards = new java.util.Vector<BufferedImage>();