New version of the samples and tutorials based on KHR_ray_tracing

common/obj_loader.h

@@ -0,0 +1,55 @@
+/******************************************************************************
+ * Copyright 1998-2018 NVIDIA Corp. All Rights Reserved.
+ *****************************************************************************/
+
+#pragma once
+#include "fileformats/tiny_obj_loader.h"
+#include "nvmath/nvmath.h"
+#include <array>
+#include <iostream>
+#include <unordered_map>
+#include <vector>
+
+// Structure holding the material
+struct MaterialObj
+{
+  nvmath::vec3f ambient       = nvmath::vec3f(0.1f, 0.1f, 0.1f);
+  nvmath::vec3f diffuse       = nvmath::vec3f(0.7f, 0.7f, 0.7f);
+  nvmath::vec3f specular      = nvmath::vec3f(1.0f, 1.0f, 1.0f);
+  nvmath::vec3f transmittance = nvmath::vec3f(0.0f, 0.0f, 0.0f);
+  nvmath::vec3f emission      = nvmath::vec3f(0.0f, 0.0f, 0.10);
+  float         shininess     = 0.f;
+  float         ior           = 1.0f;  // index of refraction
+  float         dissolve      = 1.f;   // 1 == opaque; 0 == fully transparent
+      // illumination model (see http://www.fileformat.info/format/material/)
+  int illum     = 0;
+  int textureID = -1;
+};
+// OBJ representation of a vertex
+struct VertexObj
+{
+  nvmath::vec3f pos;
+  nvmath::vec3f nrm;
+  nvmath::vec3f color;
+  nvmath::vec2f texCoord;
+};
+
+
+struct shapeObj
+{
+  uint32_t offset;
+  uint32_t nbIndex;
+  uint32_t matIndex;
+};
+
+class ObjLoader
+{
+public:
+  void loadModel(const std::string& filename);
+
+  std::vector<VertexObj>   m_vertices;
+  std::vector<uint32_t>    m_indices;
+  std::vector<MaterialObj> m_materials;
+  std::vector<std::string> m_textures;
+  std::vector<uint32_t>    m_matIndx;
+};