Merge branch 'master' of github.com:syoyo/tinyobjloader

2017-09-11 15:08:39 +09:00
parent 981f7c5f99 dcbc8d51aa
commit 303043f9ec
7 changed files with 905 additions and 30 deletions
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ Old version is available `v0.9.x` branch https://github.com/syoyo/tinyobjloader/

 ## What's new

-* 20 Aug, 2016 : Bump version v1.0.0. New data strcutre and API!
+* 20 Aug, 2016 : Bump version v1.0.0. New data structure and API!

 ### Old version

@@ -37,7 +37,7 @@ Previous old version is avaiable in `v0.9.x` branch.
 ![Rungholt](images/rungholt.jpg)

 tinyobjloader can successfully load 6M triangles Rungholt scene.
-http://graphics.cs.williams.edu/data/meshes.xml
+http://casual-effects.com/data/index.html

 ![](images/sanmugel.png) 

--- a/examples/viewer/README.md
+++ b/examples/viewer/README.md
@@ -6,7 +6,6 @@
 * glfw3
 * glew

-
 ## Build on MaCOSX

 Install glfw3 and glew using brew.
@@ -35,3 +34,9 @@ Put glfw3 and glew library somewhere and replace include and lib path in `premak
 Then,

    > premake5.exe vs2013
+
+## TODO
+
+* [ ] Support per-face material.
+* [ ] Use shader-based GL rendering.
+* [ ] PBR shader support.
--- a/examples/viewer/viewer.cc
+++ b/examples/viewer/viewer.cc
@@ -123,7 +123,7 @@ class timerutil {
 };

 typedef struct {
-  GLuint vb;  // vertex buffer
+  GLuint vb_id;  // vertex buffer id
  int numTriangles;
  size_t material_id;
 } DrawObject;
@@ -207,6 +207,9 @@ static bool LoadObjAndConvert(float bmin[3], float bmax[3],
  tm.start();

  std::string base_dir = GetBaseDir(filename);
+  if (base_dir.empty()) {
+    base_dir = ".";
+  }
 #ifdef _WIN32
  base_dir += "\\";
 #else
@@ -238,6 +241,10 @@ static bool LoadObjAndConvert(float bmin[3], float bmax[3],
  // Append `default` material
  materials.push_back(tinyobj::material_t());

+  for (size_t i = 0; i < materials.size(); i++) {
+    printf("material[%d].diffuse_texname = %s\n", int(i), materials[i].diffuse_texname.c_str());
+  }
+
  // Load diffuse textures
  {
      for (size_t m = 0; m < materials.size(); m++) {
@@ -265,15 +272,19 @@ static bool LoadObjAndConvert(float bmin[3], float bmax[3],
                      std::cerr << "Unable to load texture: " << texture_filename << std::endl;
                      exit(1);
                  }
+                  std::cout << "Loaded texture: " << texture_filename << ", w = " << w << ", h = " << h << ", comp = " << comp << std::endl;
+
                  glGenTextures(1, &texture_id);
                  glBindTexture(GL_TEXTURE_2D, texture_id);
                  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-                  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+                  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
                  if (comp == 3) {
                      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
                  }
                  else if (comp == 4) {
                      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image);
+                  } else {
+                      assert(0); // TODO
                  }
                  glBindTexture(GL_TEXTURE_2D, 0);
                  stbi_image_free(image);
@@ -289,7 +300,7 @@ static bool LoadObjAndConvert(float bmin[3], float bmax[3],
  {
    for (size_t s = 0; s < shapes.size(); s++) {
      DrawObject o;
-      std::vector<float> vb;  // pos(3float), normal(3float), color(3float)
+      std::vector<float> buffer;  // pos(3float), normal(3float), color(3float)
      for (size_t f = 0; f < shapes[s].mesh.indices.size() / 3; f++) {
        tinyobj::index_t idx0 = shapes[s].mesh.indices[3 * f + 0];
        tinyobj::index_t idx1 = shapes[s].mesh.indices[3 * f + 1];
@@ -314,6 +325,8 @@ static bool LoadObjAndConvert(float bmin[3], float bmax[3],
            assert(attrib.texcoords.size() > 2 * idx0.texcoord_index + 1);
            assert(attrib.texcoords.size() > 2 * idx1.texcoord_index + 1);
            assert(attrib.texcoords.size() > 2 * idx2.texcoord_index + 1);
+
+            // Flip Y coord.
            tc[0][0] = attrib.texcoords[2 * idx0.texcoord_index];
            tc[0][1] = 1.0f - attrib.texcoords[2 * idx0.texcoord_index + 1];
            tc[1][0] = attrib.texcoords[2 * idx1.texcoord_index];
@@ -374,12 +387,12 @@ static bool LoadObjAndConvert(float bmin[3], float bmax[3],
        }

        for (int k = 0; k < 3; k++) {
-          vb.push_back(v[k][0]);
-          vb.push_back(v[k][1]);
-          vb.push_back(v[k][2]);
-          vb.push_back(n[k][0]);
-          vb.push_back(n[k][1]);
-          vb.push_back(n[k][2]);
+          buffer.push_back(v[k][0]);
+          buffer.push_back(v[k][1]);
+          buffer.push_back(v[k][2]);
+          buffer.push_back(n[k][0]);
+          buffer.push_back(n[k][1]);
+          buffer.push_back(n[k][2]);
          // Combine normal and diffuse to get color.
          float normal_factor = 0.2;
          float diffuse_factor = 1 - normal_factor;
@@ -396,32 +409,32 @@ static bool LoadObjAndConvert(float bmin[3], float bmax[3],
            c[1] /= len;
            c[2] /= len;
          }
-          vb.push_back(c[0] * 0.5 + 0.5);
-          vb.push_back(c[1] * 0.5 + 0.5);
-          vb.push_back(c[2] * 0.5 + 0.5);
+          buffer.push_back(c[0] * 0.5 + 0.5);
+          buffer.push_back(c[1] * 0.5 + 0.5);
+          buffer.push_back(c[2] * 0.5 + 0.5);
          
-          vb.push_back(tc[k][0]);
-          vb.push_back(tc[k][1]);
+          buffer.push_back(tc[k][0]);
+          buffer.push_back(tc[k][1]);
        }
      }

-      o.vb = 0;
+      o.vb_id = 0;
      o.numTriangles = 0;

      // OpenGL viewer does not support texturing with per-face material.
      if (shapes[s].mesh.material_ids.size() > 0 && shapes[s].mesh.material_ids.size() > s) {
-          // Base case
-          o.material_id = shapes[s].mesh.material_ids[s];
+          o.material_id = shapes[s].mesh.material_ids[0]; // use the material ID of the first face.
      } else {
          o.material_id = materials.size() - 1; // = ID for default material.
      }
+      printf("shape[%d] material_id %d\n", int(s), int(o.material_id));
          
-      if (vb.size() > 0) {
-        glGenBuffers(1, &o.vb);
-        glBindBuffer(GL_ARRAY_BUFFER, o.vb);
-        glBufferData(GL_ARRAY_BUFFER, vb.size() * sizeof(float), &vb.at(0),
+      if (buffer.size() > 0) {
+        glGenBuffers(1, &o.vb_id);
+        glBindBuffer(GL_ARRAY_BUFFER, o.vb_id);
+        glBufferData(GL_ARRAY_BUFFER, buffer.size() * sizeof(float), &buffer.at(0),
                     GL_STATIC_DRAW);
-        o.numTriangles = vb.size() / (3 + 3 + 3 + 2) / 3; // 3:vtx, 3:normal, 3:col, 2:texcoord
+        o.numTriangles = buffer.size() / (3 + 3 + 3 + 2) / 3; // 3:vtx, 3:normal, 3:col, 2:texcoord

        printf("shape[%d] # of triangles = %d\n", static_cast<int>(s),
               o.numTriangles);
@@ -545,16 +558,17 @@ static void Draw(const std::vector<DrawObject>& drawObjects, std::vector<tinyobj
  GLsizei stride = (3 + 3 + 3 + 2) * sizeof(float);
  for (size_t i = 0; i < drawObjects.size(); i++) {
    DrawObject o = drawObjects[i];
-    if (o.vb < 1) {
+    if (o.vb_id < 1) {
      continue;
    }

-    glBindBuffer(GL_ARRAY_BUFFER, o.vb);
+    glBindBuffer(GL_ARRAY_BUFFER, o.vb_id);
    glEnableClientState(GL_VERTEX_ARRAY);
    glEnableClientState(GL_NORMAL_ARRAY);
    glEnableClientState(GL_COLOR_ARRAY);
    glEnableClientState(GL_TEXTURE_COORD_ARRAY);

+    glBindTexture(GL_TEXTURE_2D, 0);
    if ((o.material_id < materials.size())) {
      std::string diffuse_texname = materials[o.material_id].diffuse_texname;
      if (textures.find(diffuse_texname) != textures.end()) {
@@ -579,11 +593,11 @@ static void Draw(const std::vector<DrawObject>& drawObjects, std::vector<tinyobj
  glColor3f(0.0f, 0.0f, 0.4f);
  for (size_t i = 0; i < drawObjects.size(); i++) {
    DrawObject o = drawObjects[i];
-    if (o.vb < 1) {
+    if (o.vb_id < 1) {
      continue;
    }

-    glBindBuffer(GL_ARRAY_BUFFER, o.vb);
+    glBindBuffer(GL_ARRAY_BUFFER, o.vb_id);
    glEnableClientState(GL_VERTEX_ARRAY);
    glEnableClientState(GL_NORMAL_ARRAY);
    glDisableClientState(GL_COLOR_ARRAY);
--- a/models/map-bump.mtl
+++ b/models/map-bump.mtl
@@ -0,0 +1,10 @@
+newmtl Material.001
+Ka 0 0 0
+Kd 0 0 0
+Ks 0 0 0
+map_Bump bump.jpg
+
+newmtl Material.003
+Ka 0 0 0
+Kd 1 1 1
+Ks 0 0 0
--- a/models/map-bump.obj
+++ b/models/map-bump.obj
@@ -0,0 +1,817 @@
+# https://github.com/syoyo/tinyobjloader/issues/68
+# Blender v2.73 (sub 0) OBJ File: 'enemy.blend'
+# www.blender.org
+mtllib map-bump.mtl
+o Cube
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+f 131/10/24 145/9/24 120/11/24
+f 114/5/2 113/6/2 148/12/2
+f 112/7/45 162/15/45 113/6/45
+f 122/17/46 123/16/46 121/18/46
+f 123/16/47 127/19/47 119/20/47
+f 142/39/24 140/22/24 129/4/24
+f 122/17/48 121/18/48 126/23/48
+f 142/39/45 138/27/45 134/25/45
+f 116/30/45 117/24/45 119/20/45
+f 128/29/75 126/23/75 110/28/75
+f 142/39/45 122/17/45 128/29/45
+f 110/28/76 127/19/76 134/25/76
+f 126/23/50 117/24/50 127/19/50
+f 198/36/51 137/33/51 201/31/51
+f 140/22/24 145/9/24 125/21/24
+f 124/41/24 130/34/24 140/22/24
+f 198/36/52 199/35/52 137/33/52
+f 199/35/53 200/37/53 133/38/53
+f 134/25/45 123/16/45 142/39/45
+f 136/32/45 137/33/45 132/40/45
+f 128/29/24 124/41/24 142/39/24
+f 145/9/24 130/34/24 139/42/24
+f 134/25/45 141/26/45 114/5/45
+f 129/4/45 114/5/45 143/44/45
+f 129/4/45 143/44/45 142/39/45
+f 201/31/54 136/32/54 200/37/54
+f 135/45/44 212/1/44 172/46/44
+f 111/65/14 147/48/14 135/45/14
+f 158/84/15 181/50/15 148/12/15
+f 153/58/26 168/53/26 157/51/26
+f 130/34/17 124/41/17 156/54/17
+f 110/28/17 146/56/17 128/29/17
+f 154/57/2 148/12/2 161/8/2
+f 154/57/2 129/4/2 153/58/2
+f 128/29/18 155/55/18 124/41/18
+f 118/60/19 130/34/19 151/61/19
+f 157/51/20 131/10/20 150/62/20
+f 110/28/21 134/25/21 146/56/21
+f 135/45/14 159/47/14 115/3/14
+f 211/2/22 115/3/22 213/64/22
+f 210/75/23 214/66/23 111/65/23
+f 163/14/2 162/15/2 164/67/2
+f 161/8/14 165/68/14 112/7/14
+f 113/6/15 163/14/15 160/13/15
+f 160/13/3 164/67/3 161/8/3
+f 168/53/2 166/69/2 169/52/2
+f 131/10/25 157/51/25 167/70/25
+f 131/10/16 167/70/16 125/21/16
+f 153/58/27 125/21/27 168/53/27
+f 172/46/77 216/71/77 176/72/77
+f 111/65/44 135/45/44 170/73/44
+f 139/42/44 118/60/44 173/74/44
+f 118/60/44 210/75/44 171/76/44
+f 218/78/44 217/77/44 176/72/44
+f 172/46/56 176/72/56 170/73/56
+f 173/74/57 171/76/57 177/80/57
+f 215/109/78 217/77/78 171/76/78
+f 181/50/33 185/83/33 180/49/33
+f 158/84/15 134/25/15 181/50/15
+f 148/12/15 180/49/15 114/5/15
+f 114/5/15 178/85/15 134/25/15
+f 185/83/15 189/90/15 184/82/15
+f 179/86/17 183/88/17 181/50/17
+f 178/85/2 180/49/2 182/89/2
+f 178/85/32 182/89/32 179/86/32
+f 188/87/24 189/90/24 192/91/24
+f 183/88/15 187/92/15 185/83/15
+f 182/89/15 184/82/15 186/93/15
+f 182/89/15 186/93/15 183/88/15
+f 190/96/15 192/91/15 191/94/15
+f 187/92/2 191/94/2 189/90/2
+f 188/87/17 192/91/17 186/93/17
+f 187/92/3 186/93/3 191/94/3
+f 141/26/54 197/98/54 144/43/54
+f 143/44/53 144/43/53 195/99/53
+f 138/27/52 143/44/52 194/100/52
+f 138/27/51 194/100/51 141/26/51
+f 200/37/59 208/102/59 201/31/59
+f 200/37/60 199/35/60 208/102/60
+f 199/35/61 198/36/61 207/103/61
+f 201/31/79 209/101/79 198/36/79
+f 205/108/54 209/101/54 204/105/54
+f 203/106/53 204/105/53 207/103/53
+f 202/107/52 203/106/52 206/104/52
+f 202/107/51 206/104/51 205/108/51
+f 194/100/63 202/107/63 197/98/63
+f 194/100/64 195/99/64 202/107/64
+f 195/99/65 196/97/65 203/106/65
+f 197/98/66 205/108/66 196/97/66
+f 170/73/80 174/79/80 215/109/80
+f 177/80/44 175/81/44 218/78/44
+f 111/65/44 170/73/44 210/75/44
+f 216/71/81 173/74/81 218/78/81
+f 118/60/23 151/61/23 210/75/23
+f 139/42/44 173/74/44 212/1/44
+f 120/11/44 139/42/44 211/2/44
+usemtl Material.003
+f 41/62/82 104/64/82 102/2/82
+f 211/2/82 213/64/82 150/62/82
+f 11/11/82 41/62/82 102/2/82
+f 120/11/82 211/2/82 150/62/82
--- a/tests/tester.cc
+++ b/tests/tester.cc
@@ -585,6 +585,26 @@ TEST_CASE("refl", "[refl]") {
  REQUIRE(materials[0].reflection_texname.compare("reflection.tga") == 0);
 }

+TEST_CASE("map_Bump", "[bump]") {
+  tinyobj::attrib_t attrib;
+  std::vector<tinyobj::shape_t> shapes;
+  std::vector<tinyobj::material_t> materials;
+
+  std::string err;
+  bool ret = tinyobj::LoadObj(&attrib, &shapes, &materials, &err, "../models/map-bump.obj", gMtlBasePath);
+
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+
+  PrintInfo(attrib, shapes, materials);
+
+  REQUIRE(true == ret);
+  REQUIRE(2 == materials.size());
+
+  REQUIRE(materials[0].bump_texname.compare("bump.jpg") == 0);
+}
+
 #if 0
 int
 main(
--- a/tiny_obj_loader.h
+++ b/tiny_obj_loader.h
@@ -153,7 +153,7 @@ typedef struct {
  std::string diffuse_texname;             // map_Kd
  std::string specular_texname;            // map_Ks
  std::string specular_highlight_texname;  // map_Ns
-  std::string bump_texname;                // map_bump, bump
+  std::string bump_texname;                // map_bump, map_Bump, bump
  std::string displacement_texname;        // disp
  std::string alpha_texname;               // map_d
  std::string reflection_texname;          // refl
@@ -1240,6 +1240,15 @@ void LoadMtl(std::map<std::string, int> *material_map,
      continue;
    }

+    // bump texture
+    if ((0 == strncmp(token, "map_Bump", 8)) && IS_SPACE(token[8])) {
+      token += 9;
+      ParseTextureNameAndOption(&(material.bump_texname),
+                                &(material.bump_texopt), token,
+                                /* is_bump */ true);
+      continue;
+    }
+
    // bump texture
    if ((0 == strncmp(token, "bump", 4)) && IS_SPACE(token[4])) {
      token += 5;