diff example for glass surface

cbox-diff/scenes/cbox-diff/cbox-diff-glass.luisa

@@ -0,0 +1,202 @@
+// mat_cbox
+
+Surface cbox-glass-tall : Glass {
+  Kr : Constant {
+    v { 1.0, 1.0, 1.0 }
+    requires_grad { true }
+    range { 0.00001, 0.99999 }
+  }
+  Kt : Constant {
+    v { 1.0, 1.0, 1.0 }
+    requires_grad { true }
+    range { 0.00001, 0.99999 }
+  }
+  eta : Constant {
+    v { 1.5 }
+  }
+  roughness : Constant {
+    v { 0.001 }
+    requires_grad { true }
+    range { 0.00001, 0.99999 }
+  }
+}
+
+Surface cbox-glass-short : Glass {
+  Kr : Constant {
+    v {  1.0, 0.976, 0.403 }
+    //v { 1.0, 1.0, 1.0 }
+    //requires_grad { true }
+    //range { 0.00001, 0.99999 }
+  }
+  Kt : Constant {
+    v { 0.972, 1.0, 0.745}
+    //v { 1.0, 1.0, 1.0 }
+    //requires_grad { true }
+    //range { 0.00001, 0.99999 }
+  }
+  eta : Constant {
+    v { 1.5 }
+  }
+  roughness : Constant {
+    v { 0.005 }
+    //v { 0.001 }
+    //requires_grad { true }
+    //range { 0.00001, 0.99999 }
+  }
+}
+
+Surface cbox-white : Matte {
+  Kd : Constant {
+    v { 0.725, 0.71, 0.68 }
+    //v { 0.1, 0.1, 0.1 }
+    //requires_grad { true }
+    //range { 0.00001, 0.99999 }
+  }
+}
+
+Surface cbox-white-1 : Matte {
+  Kd : Constant {
+    v { 0.725, 0.71, 0.68 }
+    //v { 0.2, 0.8, 0.2 }
+    //requires_grad { true }
+    //range { 0.00001, 0.99999 }
+  }
+}
+
+Surface cbox-white-2 : Matte {
+  Kd : Constant {
+    v { 0.725, 0.71, 0.68 }
+    //v { 0.3, 0.3, 0.9 }
+    //requires_grad { true }
+    //range { 0.00001, 0.99999 }
+  }
+}
+
+Surface cbox-green : Matte {
+  Kd : Constant {
+    v { 0.14, 0.45, 0.091 }
+    //v { 0.8, 0.5, 0.1 }
+    //requires_grad { true }
+    //range { 0.00001, 0.99999 }
+  }
+}
+
+Surface cbox-red : Matte {
+  Kd : Constant {
+    v { 0.63, 0.065, 0.05 }
+    //v { 0.9, 0.9, 0.9 }
+    //requires_grad { true }
+    //range { 0.00001, 0.99999 }
+  }
+}
+
+// shape_cbox
+Shape cbox-ceiling : Mesh {
+  file { "../../meshes/cbox-parts/ceiling.obj" }
+  surface { @cbox-white }
+}
+
+Shape cbox-floor : Mesh {
+  file { "../../meshes/cbox-parts/floor.obj" }
+  surface { @cbox-white-1 }
+}
+
+Shape cbox-left-wall : Mesh {
+  file { "../../meshes/cbox-parts/left-wall.obj" }
+  surface { @cbox-red }
+}
+
+Shape cbox-right-wall : Mesh {
+  file { "../../meshes/cbox-parts/right-wall.obj" }
+  surface { @cbox-green }
+}
+
+Shape cbox-back-wall : Mesh {
+  file { "../../meshes/cbox-parts/back-wall.obj" }
+  surface { @cbox-white-2 }
+}
+
+
+Shape cbox-light : Mesh {
+  file { "../../meshes/cbox-parts/light.obj" }
+  light : Diffuse {
+    emission : Constant {
+      //v { 10, 10, 10 }
+      v { 45.0, 45.0, 45.0 }
+    }
+  }
+}
+
+Shape cbox-tall-box : Mesh {
+  file { "../../meshes/cbox-parts/tall-box.obj" }
+  surface { @cbox-glass-tall }
+}
+
+Shape cbox-short-box : Mesh {
+  file { "../../meshes/cbox-parts/short-box.obj" }
+  surface { @cbox-glass-short }
+}
+
+
+Shape cbox : Group {
+  shapes {
+    @cbox-left-wall,
+    @cbox-ceiling,
+    @cbox-floor,
+    @cbox-right-wall,
+    @cbox-back-wall,
+    @cbox-tall-box,
+    @cbox-short-box,
+    @cbox-light
+  }
+}
+
+Film film : Color {
+  resolution { 1024 }
+  exposure { 0 }
+}
+
+FIlm display : Display {
+  base { @film }
+}
+
+Camera camera : Pinhole {
+  position { 0.0, 1.0, 5.0 }
+  fov { 27.8 }
+  spp { 64 }
+  film { @display }
+  file { "../../renders/cbox-diff.exr" }
+  filter : Gaussian {
+    radius { 1 }
+  }
+  target : Image {
+    file { "../../renders/cbox-ref.exr" }
+  }
+}
+
+//Integrator pt : MegaRadiativeDiff {
+Integrator pt : MegaReplayDiff {
+  sampler : Independent {}
+  depth { 10 }
+  rr_depth { 5 }
+
+  display_camera_index { 0 }
+  save_process { true }
+  loss : L2 {}
+  iterations { 100 }
+
+  optimizer : Adam {
+    learning_rate { 0.006 }
+  }
+}
+
+render {
+  spectrum : sRGB {}
+  cameras {
+    @camera
+  }
+  shapes {
+    @cbox
+  }
+  integrator { @pt }
+}

cbox-diff/scenes/cbox-diff/cbox-ref-glass.luisa

@@ -0,0 +1,143 @@
+// mat_cbox
+
+Surface cbox-glass-tall : Glass {
+  Kr : Constant {
+    v {  1.0, 0.243, 1.0 }
+  }
+  Kt : Constant {
+    v { 1.0, 0.525, 0.854}
+  }
+  eta : Constant {
+    v { 1.5 }
+  }
+  roughness : Constant {
+    v { 0.1 }
+  }
+}
+
+Surface cbox-glass-short : Glass {
+  Kr : Constant {
+    v {  1.0, 0.976, 0.403 }
+  }
+  Kt : Constant {
+    v { 0.972, 1.0, 0.745}
+  }
+  eta : Constant {
+    v { 1.5 }
+  }
+  roughness : Constant {
+    v { 0.005 }
+  }
+}
+
+Surface cbox-white : Matte {
+  Kd : Constant {
+    v { 0.725, 0.71, 0.68 }
+  }
+}
+
+
+Surface cbox-green : Matte {
+  Kd : Constant {
+    v { 0.14, 0.45, 0.091 }
+  }
+}
+
+Surface cbox-red : Matte {
+  Kd : Constant {
+    v { 0.63, 0.065, 0.05 }
+  }
+}
+
+// shape_cbox
+Shape cbox-ceiling : Mesh {
+  file { "../../meshes/cbox-parts/ceiling.obj" }
+  surface { @cbox-white }
+}
+
+Shape cbox-floor : Mesh {
+  file { "../../meshes/cbox-parts/floor.obj" }
+  surface { @cbox-white }
+}
+
+Shape cbox-left-wall : Mesh {
+  file { "../../meshes/cbox-parts/left-wall.obj" }
+  surface { @cbox-red }
+}
+
+Shape cbox-right-wall : Mesh {
+  file { "../../meshes/cbox-parts/right-wall.obj" }
+  surface { @cbox-green }
+}
+
+Shape cbox-back-wall : Mesh {
+  file { "../../meshes/cbox-parts/back-wall.obj" }
+  surface { @cbox-white }
+}
+
+
+Shape cbox-light : Mesh {
+  file { "../../meshes/cbox-parts/light.obj" }
+  light : Diffuse {
+    emission : Constant {
+      v { 45.0, 45.0, 45.0 }
+    }
+  }
+}
+
+Shape cbox-tall-box : Mesh {
+  file { "../../meshes/cbox-parts/tall-box.obj" }
+  surface { @cbox-glass-tall }
+}
+
+Shape cbox-short-box : Mesh {
+  file { "../../meshes/cbox-parts/short-box.obj" }
+  surface { @cbox-glass-short }
+}
+
+
+Shape cbox : Group {
+  shapes {
+    @cbox-floor,
+    @cbox-ceiling,
+    @cbox-left-wall,
+    @cbox-right-wall,
+    @cbox-back-wall,
+    @cbox-tall-box,
+    @cbox-short-box,
+    @cbox-light
+  }
+}
+
+Film film : Color {
+  resolution { 1024 }
+  exposure { 0 }
+}
+
+Camera camera : Pinhole {
+  position { 0.0, 1.0, 5.0 }
+  fov { 27.8 }
+  spp { 64 }
+  film { @film }
+  file { "../../renders/cbox-ref.exr" }
+  filter : Gaussian {
+    radius { 1 }
+  }
+}
+
+Integrator pt : MegaPath {
+  sampler : Independent {}
+  depth { 10 }
+  rr_depth { 5 }
+}
+
+render {
+  spectrum : sRGB {}
+  cameras {
+    @camera
+  }
+  shapes {
+    @cbox
+  }
+  integrator { @pt }
+}