Add support for parsing `map_Bump` in mtl.

4 files changed, 857 insertions, 1 deletions

diff --git a/models/map-bump.mtl b/models/map-bump.mtl
new file mode 100644
index 0000000..6fb1291
--- /dev/null
+++ 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
diff --git a/models/map-bump.obj b/models/map-bump.obj
new file mode 100644
index 0000000..03071f1
--- /dev/null
+++ 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
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+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
diff --git a/tests/tester.cc b/tests/tester.cc
index 649451d..a76359a 100644
--- 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(
diff --git a/tiny_obj_loader.h b/tiny_obj_loader.h
index 3273e9d..34cd85e 100644
--- 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
@@ -1241,6 +1241,15 @@ void LoadMtl(std::map<std::string, int> *material_map,
     }
 
     // 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;
       ParseTextureNameAndOption(&(material.bump_texname),