commit for stack exchange

scenes/cube_on_plane.gltf

@@ -109,7 +109,7 @@
 		},
 		{
 			"mesh":4,
-			"name":"Suzanne",
+			"name":"Cube.004",
 			"translation":[
 				-10,
 				10,
@@ -174,11 +174,11 @@
 		},
 		{
 			"doubleSided":true,
-			"name":"Material.002",
+			"name":"Material.004",
 			"pbrMetallicRoughness":{
 				"baseColorFactor":[
-					0.008347976952791214,
-					0.8001724481582642,
+					0.0012476131087169051,
+					0.8003553152084351,
 					0,
 					1
 				],
@@ -245,7 +245,7 @@
 			]
 		},
 		{
-			"name":"Suzanne",
+			"name":"Cube.004",
 			"primitives":[
 				{
 					"attributes":{
@@ -253,7 +253,7 @@
 						"NORMAL":15,
 						"TEXCOORD_0":16
 					},
-					"indices":17,
+					"indices":10,
 					"material":3
 				}
 			]
@@ -387,36 +387,30 @@
 		{
 			"bufferView":14,
 			"componentType":5126,
-			"count":555,
+			"count":14,
 			"max":[
-				1.3671875,
-				0.984375,
-				0.8515625
+				1,
+				1,
+				1
 			],
 			"min":[
-				-1.3671875,
-				-0.984375,
-				-0.8515625
+				-1,
+				-1,
+				-1
 			],
 			"type":"VEC3"
 		},
 		{
 			"bufferView":15,
 			"componentType":5126,
-			"count":555,
+			"count":14,
 			"type":"VEC3"
 		},
 		{
 			"bufferView":16,
 			"componentType":5126,
-			"count":555,
+			"count":14,
 			"type":"VEC2"
-		},
-		{
-			"bufferView":17,
-			"componentType":5123,
-			"count":2904,
-			"type":"SCALAR"
 		}
 	],
 	"bufferViews":[
@@ -506,32 +500,26 @@
 		},
 		{
 			"buffer":0,
-			"byteLength":6660,
+			"byteLength":168,
 			"byteOffset":1936,
 			"target":34962
 		},
 		{
 			"buffer":0,
-			"byteLength":6660,
-			"byteOffset":8596,
+			"byteLength":168,
+			"byteOffset":2104,
 			"target":34962
 		},
 		{
 			"buffer":0,
-			"byteLength":4440,
-			"byteOffset":15256,
+			"byteLength":112,
+			"byteOffset":2272,
 			"target":34962
-		},
-		{
-			"buffer":0,
-			"byteLength":5808,
-			"byteOffset":19696,
-			"target":34963
 		}
 	],
 	"buffers":[
 		{
-			"byteLength":25504,
+			"byteLength":2384,
 			"uri":"cube_on_plane.bin"
 		}
 	]

src/ray.rs

@@ -31,6 +31,8 @@ pub fn construct_primary_rays(camera: &Camera,
         panic!("Non invertible transform Matrix. giving up.")
     );
 
+    dbg!(camera.transform);
+
     //TODO: take ray multiplier per pixel into account here
     let mut rays: Vec<Ray> = Vec::with_capacity(height * width);
 
@@ -59,7 +61,7 @@ fn generate_single_primary_ray(image_width: usize,
     let direction_view_space: Vector4<f32> =
         Vector4::new(u as f32 - (image_width as f32 / 2.0),
                      v as f32 - (image_height as f32 / 2.0),
-                     -focal_length,
+                     focal_length,
                      0.0);
     //TODO: Rotation is fucked
     //x rotation has sign wrong, y and z are flipped

src/renderer.rs

@@ -75,6 +75,7 @@ fn raytrace(ray: &Ray, scene: &Scene) -> Rgba<u8> {
                     // a new closer Point is found
                     if t < smallest_t {
                         smallest_t = t;
+                        //TODO: lighting model is not at all considered. Just a debug hack.
                         clostest_intersection_point = Option::from(isec);
                         let color_vec = model.material().get_base_color_alpha(
                             Vector2::new(0.0, 0.0)