OBJLoader now support transparency

Mesh::AddSubMesh no longer return bool

Former-commit-id: 71217618d179c5853683f4615901565cb7cd3ab8

src/Nazara/Graphics/Loaders/OBJ/Loader.cpp

@@ -34,6 +34,7 @@ namespace
 	bool Load(NzModel* model, NzInputStream& stream, const NzModelParameters& parameters)
 	{
 		NzOBJParser parser(stream);
+
 		if (!parser.Parse())
 		{
 			NazaraError("OBJ parser failed");
@@ -173,10 +174,8 @@ namespace
 			else
 				subMesh->GenerateNormals();
 
-			if (mesh->AddSubMesh(meshes[i].name + '_' + materials[meshes[i].material], subMesh.get()))
-				subMesh.release();
-			else
-				NazaraError("Failed to add SubMesh to Mesh");
+			mesh->AddSubMesh(meshes[i].name + '_' + materials[meshes[i].material], subMesh.get());
+			subMesh.release();
 		}
 
 		mesh->SetMaterialCount(parser.GetMaterialCount());
@@ -218,6 +217,23 @@ namespace
 							material->SetSpecularColor(specularColor);
 							material->SetShininess(mtlMat->shininess);
 
+							bool hasAlphaMap = false;;
+							if (parameters.material.loadAlphaMap && !mtlMat->alphaMap.IsEmpty())
+							{
+								std::unique_ptr<NzTexture> alphaMap(new NzTexture);
+								alphaMap->SetPersistent(false);
+
+								if (alphaMap->LoadFromFile(baseDir + mtlMat->alphaMap))
+								{
+									hasAlphaMap = true;
+
+									material->SetAlphaMap(alphaMap.get());
+									alphaMap.release();
+								}
+								else
+									NazaraWarning("Failed to load alpha map (" + mtlMat->alphaMap + ')');
+							}
+
 							if (parameters.material.loadDiffuseMap && !mtlMat->diffuseMap.IsEmpty())
 							{
 								std::unique_ptr<NzTexture> diffuseMap(new NzTexture);
@@ -246,6 +262,17 @@ namespace
 									NazaraWarning("Failed to load specular map (" + mtlMat->diffuseMap + ')');
 							}
 
+							// Si nous avons une alpha map ou des couleurs transparentes,
+							// nous devons configurer le matériau pour accepter la transparence au mieux
+							if (hasAlphaMap || !NzNumberEquals(mtlMat->alpha, 1.f))
+							{
+								// On paramètre le matériau pour accepter la transparence au mieux
+								material->Enable(nzRendererParameter_Blend, true);
+								material->Enable(nzRendererParameter_DepthWrite, false);
+								material->SetDstBlend(nzBlendFunc_InvSrcAlpha);
+								material->SetSrcBlend(nzBlendFunc_SrcAlpha);
+							}
+
 							model->SetMaterial(meshes[i].material, material.get());
 							material.release();
 						}

src/Nazara/Utility/Loaders/MD5Mesh/Parser.cpp

@@ -260,12 +260,7 @@ bool NzMD5MeshParser::Parse(NzMesh* mesh)
 			mesh->SetMaterial(i, baseDir + md5Mesh.shader);
 			subMesh->SetMaterialIndex(i);
 
-			if (!mesh->AddSubMesh(subMesh.get()))
-			{
-				NazaraError("Failed to add submesh");
-				continue;
-			}
-
+			mesh->AddSubMesh(subMesh.get());
 			subMesh.release();
 
 			// Animation
@@ -360,12 +355,7 @@ bool NzMD5MeshParser::Parse(NzMesh* mesh)
 			subMesh->GenerateNormalsAndTangents();
 			subMesh->SetMaterialIndex(i);
 
-			if (!mesh->AddSubMesh(subMesh.get()))
-			{
-				NazaraError("Failed to add submesh");
-				continue;
-			}
-
+			mesh->AddSubMesh(subMesh.get());
 			subMesh.release();
 		}
 	}

src/Nazara/Utility/Mesh.cpp

@@ -69,25 +69,25 @@ NzMesh::~NzMesh()
 	Destroy();
 }
 
-bool NzMesh::AddSubMesh(NzSubMesh* subMesh)
+void NzMesh::AddSubMesh(NzSubMesh* subMesh)
 {
 	#if NAZARA_UTILITY_SAFE
 	if (!m_impl)
 	{
 		NazaraError("Mesh not created");
-		return false;
+		return;
 	}
 
 	if (!subMesh)
 	{
 		NazaraError("Invalid submesh");
-		return false;
+		return;
 	}
 
 	if (subMesh->GetAnimationType() != m_impl->animationType)
 	{
 		NazaraError("Submesh animation type must match mesh animation type");
-		return false;
+		return;
 	}
 	#endif
 
@@ -95,42 +95,40 @@ bool NzMesh::AddSubMesh(NzSubMesh* subMesh)
 
 	m_impl->aabbUpdated = false; // On invalide l'AABB
 	m_impl->subMeshes.push_back(subMesh);
-
-	return true;
 }
 
-bool NzMesh::AddSubMesh(const NzString& identifier, NzSubMesh* subMesh)
+void NzMesh::AddSubMesh(const NzString& identifier, NzSubMesh* subMesh)
 {
 	#if NAZARA_UTILITY_SAFE
 	if (!m_impl)
 	{
 		NazaraError("Mesh not created");
-		return false;
+		return;
 	}
 
 	if (identifier.IsEmpty())
 	{
 		NazaraError("Identifier is empty");
-		return false;
+		return;
 	}
 
 	auto it = m_impl->subMeshMap.find(identifier);
 	if (it != m_impl->subMeshMap.end())
 	{
 		NazaraError("SubMesh identifier \"" + identifier + "\" is already used");
-		return false;
+		return;
 	}
 
 	if (!subMesh)
 	{
 		NazaraError("Invalid submesh");
-		return false;
+		return;
 	}
 
 	if (m_impl->animationType != subMesh->GetAnimationType())
 	{
 		NazaraError("Submesh animation type must match mesh animation type");
-		return false;
+		return;
 	}
 	#endif
 
@@ -141,29 +139,27 @@ bool NzMesh::AddSubMesh(const NzString& identifier, NzSubMesh* subMesh)
 	m_impl->aabbUpdated = false; // On invalide l'AABB
 	m_impl->subMeshes.push_back(subMesh);
 	m_impl->subMeshMap[identifier] = index;
-
-	return true;
 }
 
-void NzMesh::BuildSubMesh(const NzPrimitive& primitive, const NzMeshParams& params)
+NzSubMesh* NzMesh::BuildSubMesh(const NzPrimitive& primitive, const NzMeshParams& params)
 {
 	#if NAZARA_UTILITY_SAFE
 	if (!m_impl)
 	{
 		NazaraError("Mesh not created");
-		return;
+		return nullptr;
 	}
 
 	if (m_impl->animationType != nzAnimationType_Static)
 	{
 		NazaraError("Mesh must be static");
-		return;
+		return nullptr;
 	}
 
 	if (!params.IsValid())
 	{
 		NazaraError("Parameters must be valid");
-		return;
+		return nullptr;
 	}
 	#endif
 
@@ -283,7 +279,7 @@ void NzMesh::BuildSubMesh(const NzPrimitive& primitive, const NzMeshParams& para
 	if (!subMesh->Create(vertexBuffer.get()))
 	{
 		NazaraError("Failed to create StaticMesh");
-		return;
+		return nullptr;
 	}
 	vertexBuffer.release();
 
@@ -294,9 +290,9 @@ void NzMesh::BuildSubMesh(const NzPrimitive& primitive, const NzMeshParams& para
 	indexBuffer.release();
 
 	subMesh->SetAABB(aabb);
+	AddSubMesh(subMesh.get());
 
-	if (AddSubMesh(subMesh.get()))
-		subMesh.release();
+	return subMesh.release();
 }
 
 void NzMesh::BuildSubMeshes(const NzPrimitiveList& list, const NzMeshParams& params)