Improved lightmap sampling for face vertices

main.cpp

@@ -181,24 +181,24 @@ static unsigned char sample_lightmap(const world_t* world, const face_t *face, c
 		// Towards X
 		width = (int)(ceil(bounds.max.y / 16) - floor(bounds.min.y / 16)) * 16;
 		height = (int)(ceil(bounds.max.z / 16) - floor(bounds.min.z / 16)) * 16;
-		u = (point.y - bounds.min.y) / width;
-		v = (point.z - bounds.min.z) / height;
+		u = (point.y - bounds.min.y) / (bounds.max.y - bounds.min.y);
+		v = (point.z - bounds.min.z) / (bounds.max.z - bounds.min.z);
 		break;
 	case 1:
 	case 4:
 		// Towards Y
 		width = (int)(ceil(bounds.max.x / 16) - floor(bounds.min.x / 16)) * 16;
 		height = (int)(ceil(bounds.max.z / 16) - floor(bounds.min.z / 16)) * 16;
-		u = (point.x - bounds.min.x) / width;
-		v = (point.z - bounds.min.z) / height;
+		u = (point.x - bounds.min.x) / (bounds.max.x - bounds.min.x);
+		v = (point.z - bounds.min.z) / (bounds.max.z - bounds.min.z);
 		break;
 	case 2:
 	case 5:
 		// Towards Z
 		width = (int)(ceil(bounds.max.x / 16) - floor(bounds.min.x / 16)) * 16;
 		height = (int)(ceil(bounds.max.y / 16) - floor(bounds.min.y / 16)) * 16;
-		u = (point.x - bounds.min.x) / width;
-		v = (point.y - bounds.min.y) / height;
+		u = (point.x - bounds.min.x) / (bounds.max.x - bounds.min.x);
+		v = (point.y - bounds.min.y) / (bounds.max.y - bounds.min.y);
 		break;
 	default:
 		printf("Error: unknown plane type %d\n", plane->type);
@@ -352,7 +352,7 @@ int process_faces(const world_t* world)
 		//if (face->ledge_num >= 10)
 		//	export_lightmap(world, face, bounds, faceIdx);
 
-		outFace.numFaceVertices = (unsigned short)(outFaceVertices.size() - outFace.firstFaceVertex);
+		outFace.numFaceVertices = (unsigned char)(outFaceVertices.size() - outFace.firstFaceVertex);
 		outFaces.push_back(outFace);
 	}
 

ps1bsp.h

@@ -60,7 +60,7 @@ typedef struct
 typedef struct
 {
 	unsigned short firstFaceVertex;
-	unsigned short numFaceVertices;
+	unsigned char numFaceVertices;
 } ps1bsp_face_t;
 
 // Pre-parsed and encoded entity data (this runs the risk of becoming too bloated)