C++ Batch::GetVS方法代码示例

bool Trans_Mesh::Init(){
	XAxis_Color=vec3(1, 0, 0);
	YAxis_Color=vec3(0, 1,0);
	ZAxis_Color=vec3(0, 0, 1);
	Hit_Axis_Color = vec3(1, 1, 1);
	HitAxis = vec3(0,0,0);
	Vertices.push_back(vec3(1.0f, 0.0f, 0.0f));
	const float split=16.0f;
	//note: all of these shapes will have to be scaled to correctly in the draw function, but its not something the user will do. that will be done in the draw function below
	// first create the cone pointer
	uint16_t index=1;
	for(float i=0.0f; i<2*Pi; i+=Pi/split){
		vec3 p;
		p.x=-1.0f;
		p.y=sinf(i);
		p.z=cosf(i);
		Vertices.push_back(p);
	}

	index=0;
	for(float i=0.0f; i<2*Pi; i+=Pi/split){
		Indices.push_back(0);
		Indices.push_back(index+2);
		Indices.push_back(index+1);
		index+=1;
	}
	Indices[Indices.size()-2]=Vertices.size()-1;
	Indices.push_back(0);
	Indices.push_back(1);
	Indices.push_back(Vertices.size()-1);

	FormatDesc layers[1] = { FormatDesc(TYPE_VERTEX, FORMAT_FLOAT, 4, 0) };
	Batch* b = new Batch();
	b->GetVS()->CompileShaderFromMemory(Graphics::Shader_Defines::BV_VS);
	b->GetVS()->CreateInputLayout(layers, 1);
	b->GetPS()->CompileShaderFromMemory(Graphics::Shader_Defines::BV_PS);
	b->NumIndices = Indices.size();
	b->StartIndex =0;
	b->NumVerts = Vertices.size();
	Batches.push_back(b);

	index=Vertices.size();

	// now create the rod to connect to it 
	// a long triangle looks the same as a rod
	Vertices.push_back(vec3(1.0f, 1.0f, 0.0f));//0
	Vertices.push_back(vec3(1.0f, -1.0f, 1.0f));//1
	Vertices.push_back(vec3(1.0f, -1.0f, -1.0f));//2

	Vertices.push_back(vec3(-1.0f, 1.0f, 0.0f));//3
	Vertices.push_back(vec3(-1.0f, -1.0f, 1.0f));//4
	Vertices.push_back(vec3(-1.0f, -1.0f, -1.0f));//5

	Vertices.push_back(vec3(-1.0f, -1.0f, -1.0f));//extra vert is needed for alignment reasons.. .  i guess

	Batch* b1 = new Batch();
	b1->GetVS()->CompileShaderFromMemory(Graphics::Shader_Defines::BV_VS);
	b1->GetVS()->CreateInputLayout(layers, 1);
	b1->GetPS()->CompileShaderFromMemory(Graphics::Shader_Defines::BV_PS);
	b1->StartIndex =Indices.size();
	b1->NumVerts = 6;
	Batches.push_back(b1);

	Indices.push_back(index+0);
	Indices.push_back(index+4);
	Indices.push_back(index+3);

	Indices.push_back(index+1);
	Indices.push_back(index+4);
	Indices.push_back(index+0);

	Indices.push_back(index+1);
	Indices.push_back(index+4);
	Indices.push_back(index+2);

	Indices.push_back(index+2);
	Indices.push_back(index+4);
	Indices.push_back(index+5);

	Indices.push_back(index+5);
	Indices.push_back(index+2);
	Indices.push_back(index+3);

	Indices.push_back(index+3);
	Indices.push_back(index+2);
	Indices.push_back(index+0);

	b1->NumIndices = Indices.size()-b->NumIndices;


	CBuffer0.Create(1, sizeof(mat4) + sizeof(vec4), CONSTANT_BUFFER);
	VB[0].Create(Vertices.size(), sizeof(vec3), BufferType::VERTEX_BUFFER, DEFAULT, CPU_NONE, &Vertices[0]);
	IB.Create(Indices.size(), sizeof(uint16_t), BufferType::INDEX_BUFFER, DEFAULT, CPU_NONE, &Indices[0]);

	return true;
}

//.........这里部分代码省略.........
			if(bonein ==-1){//  did not find the bone, this is a new one push back
				bonein = bonenames.size();// get the index before insertion
				bonenames.push_back(bone->mName.data);
			}
			// there should only be 4 per vertex here because assimp guaranteees it, but if there are more, we are ok
			for( unsigned int b = 0; b < bone->mNumWeights; b++){
				if(			tempverts[bone->mWeights[b].mVertexId+ currentvertex].Weights.x <= 0.f) {
							tempverts[bone->mWeights[b].mVertexId+ currentvertex].Bones[0] = static_cast<float>(bonein);
							tempverts[bone->mWeights[b].mVertexId+ currentvertex].Weights.x = bone->mWeights[b].mWeight;
				} else if(	tempverts[bone->mWeights[b].mVertexId+ currentvertex].Weights.y <= 0.f){
							tempverts[bone->mWeights[b].mVertexId+ currentvertex].Bones[1] = static_cast<float>(bonein);
							tempverts[bone->mWeights[b].mVertexId+ currentvertex].Weights.y = bone->mWeights[b].mWeight;
				} else if(	tempverts[bone->mWeights[b].mVertexId+ currentvertex].Weights.z <= 0.f){
							tempverts[bone->mWeights[b].mVertexId+ currentvertex].Bones[2] = static_cast<float>(bonein);
							tempverts[bone->mWeights[b].mVertexId+ currentvertex].Weights.z = bone->mWeights[b].mWeight;
				} else if(	tempverts[bone->mWeights[b].mVertexId+ currentvertex].Weights.w <= 0.f){
							tempverts[bone->mWeights[b].mVertexId+ currentvertex].Bones[3] = static_cast<float>(bonein);
							tempverts[bone->mWeights[b].mVertexId+ currentvertex].Weights.w = bone->mWeights[b].mWeight;
				}
			}
			
		}
		for (unsigned int x = 0; x < mesh->mNumVertices;++x){
			Vertices[x + currentvertex] = tempverts[x + currentvertex].Pos = *reinterpret_cast<vec3*>(&mesh->mVertices[x]);
			tempverts[x + currentvertex].Tex =  *reinterpret_cast<vec2*>(&mesh->mTextureCoords[0][x]);
			tempverts[x + currentvertex].Norm = *reinterpret_cast<vec3*>(&mesh->mNormals[x]);
			tempverts[x + currentvertex].Tang = *reinterpret_cast<vec3*>(&mesh->mTangents[x]);
		}
		// check whether we can use 16 bit indices for our format... the ASSIMPOBLARBLA uses 32 bit indices for all theirs..
		if (IB.Stride == 4){
			uint32_t* pbData = reinterpret_cast<uint32_t*>(&Indices[currentindex]);
			for (unsigned int x = 0; x < mesh->mNumFaces;++x){
				for (unsigned int a = 0; a < 3 ;++a) {
					*pbData++ = static_cast<uint32_t>(mesh->mFaces[x].mIndices[a]+ currentvertex);
				}
			}
		} else {
			uint16_t* pbData = reinterpret_cast<uint16_t*>(&Indices[currentindex]);
			for (unsigned int x = 0; x < mesh->mNumFaces;++x){
				for (unsigned int a = 0; a < 3 ;++a) {
					*pbData++ = static_cast<uint16_t>(mesh->mFaces[x].mIndices[a]+ currentvertex);
				}
			}
		}
		//load the textures
		std::string pathtomodel(GetPath(file));
		Batch *batch = new Batch();

		LoadMaterials(mesh, load->mMaterials, batch, pathtomodel, Asset_Dir);
		batch->NumIndices=mesh->mNumFaces*3;
		batch->StartIndex = static_cast<uint32_t>(currentindex);
		batch->NumVerts= mesh->mNumVertices;
		// make sure to increment the ref count for thesse so they are properly destroyed

		currentvertex+=mesh->mNumVertices;
		currentindex+=mesh->mNumFaces*3;

		//For now, there will be a new shader for each material. I will create a shader cache where the graphics lib will cache the shaders and issue out already created shaders like it does with textures.
		Graphics::Shader_Macro macro1[] = {
			{"NORMALMAP", "1" }, 
			{"MATRIX_PALETTE_SIZE_DEFAULT", "60" }, 
			{NULL, NULL}
		};
		Graphics::Shader_Macro macro0[] = {
			{"NORMALMAP", "0" }, 
			{"MATRIX_PALETTE_SIZE_DEFAULT", "60" }, 
			{NULL, NULL}
		};

		Graphics::Shader_Macro* ptr = nullptr;
		if(batch->Has_NormalMap()) ptr = macro1;
		else ptr = macro0;

		batch->GetVS()->CompileShaderFromFile("Animated_Mesh.fx", "VS", "vs_4_0", ptr);

		FormatDesc lay[] = {
			FormatDesc(),
			FormatDesc(TYPE_TEXCOORD, FORMAT_FLOAT, 2),
			FormatDesc(TYPE_NORMAL, FORMAT_FLOAT, 3),
			FormatDesc(TYPE_TANGENT, FORMAT_FLOAT, 3),
			FormatDesc(TYPE_BONE, FORMAT_FLOAT, 4),
			FormatDesc(TYPE_WEIGHT, FORMAT_FLOAT, 4)
		};
		batch->GetVS()->CreateInputLayout(lay, sizeof(lay)/sizeof(FormatDesc));
		batch->GetPS()->CompileShaderFromFile("Animated_Mesh.fx", "PS", "ps_4_0", ptr);

		Batches.push_back(batch);
	}
	Animatior.Init(load);
	aiReleaseImport(load);// free the resrouces
	if(currentvertex==0) {// this could happen, if so GET OUTOF HERE
		OUTPUT_DEBUG_MSG("Problem loading the mesh, there were no vertices loaded. Failed to load the mesh");
		return false;
	}
	VB[0].Create(currentvertex, sizeof(Vertex_Types::Pos_Tex_Norm_Tang_Bone_Weight), VERTEX_BUFFER, IMMUTABLE, CPU_NONE, &tempverts[0] );
	IB.Create(currentindex, IB.Stride, INDEX_BUFFER, IMMUTABLE, CPU_NONE, &Indices[0]); // create index buffer!
	OUTPUT_DEBUG_MSG("Finished Loading the Mesh");
	Name=FileName =file;
	return true;
}