/// <summary>
/// GameObject をそのまま頂点バッファへ設定する HW インスタンシングで GameObject を描画します。
/// </summary>
void DrawGameObjectsWithDirectMapping()
{
instancingBlockEffect.View = view;
instancingBlockEffect.Projection = projection;
// インスタンスをそのまま頂点バッファへコピー
int offset = directMappingVertexBuffer.SetData(gameObjects.Items, 0, gameObjects.Count);
mesh.LevelOfDetail = 0;
// ゲームオブジェクトを描画
foreach (var meshPart in mesh.MeshParts)
{
vertexBufferBindings[0] = new VertexBufferBinding(meshPart.VertexBuffer, meshPart.VertexOffset);
vertexBufferBindings[1] = new VertexBufferBinding(directMappingVertexBuffer.VertexBuffer, offset, 1);
GraphicsDevice.SetVertexBuffers(vertexBufferBindings);
GraphicsDevice.Indices = meshPart.IndexBuffer;
instancingBlockEffect.DiffuseColor = meshPart.MeshMaterial.DiffuseColor;
instancingBlockEffect.EmissiveColor = meshPart.MeshMaterial.EmissiveColor;
instancingBlockEffect.SpecularColor = meshPart.MeshMaterial.SpecularColor;
instancingBlockEffect.SpecularPower = meshPart.MeshMaterial.SpecularPower;
instancingBlockEffect.Pass.Apply();
GraphicsDevice.DrawInstancedPrimitives(
PrimitiveType.TriangleList, 0, 0,
meshPart.NumVertices, meshPart.StartIndex, meshPart.PrimitiveCount, gameObjects.Count);
}
}
/// <summary>
/// HW インスタンシングで GameObject を描画します。
/// </summary>
void DrawGameObjectsWithHardwareInstancing()
{
instancingBlockEffect.View = view;
instancingBlockEffect.Projection = projection;
// インスタンス情報を一旦コピー
for (int i = 0; i < gameObjects.Count; ++i)
{
objectInstances[i].Position = gameObjects.Items[i].Position;
objectInstances[i].Scale = gameObjects.Items[i].Scale;
objectInstances[i].RotateAxis = gameObjects.Items[i].RotateAxis;
objectInstances[i].Rotation = gameObjects.Items[i].Rotation;
}
// インスタンス用の頂点バッファへ書き込む
int offset = instanceVertexBuffer.SetData(objectInstances, 0, gameObjects.Count);
mesh.LevelOfDetail = 0;
// ゲームオブジェクトを描画
foreach (var meshPart in mesh.MeshParts)
{
vertexBufferBindings[0] = new VertexBufferBinding(meshPart.VertexBuffer, meshPart.VertexOffset);
vertexBufferBindings[1] = new VertexBufferBinding(instanceVertexBuffer.VertexBuffer, offset, 1);
GraphicsDevice.SetVertexBuffers(vertexBufferBindings);
GraphicsDevice.Indices = meshPart.IndexBuffer;
instancingBlockEffect.DiffuseColor = meshPart.MeshMaterial.DiffuseColor;
instancingBlockEffect.EmissiveColor = meshPart.MeshMaterial.EmissiveColor;
instancingBlockEffect.SpecularColor = meshPart.MeshMaterial.SpecularColor;
instancingBlockEffect.SpecularPower = meshPart.MeshMaterial.SpecularPower;
instancingBlockEffect.Pass.Apply();
GraphicsDevice.DrawInstancedPrimitives(
PrimitiveType.TriangleList, 0, 0,
meshPart.NumVertices, meshPart.StartIndex, meshPart.PrimitiveCount, gameObjects.Count);
}
}
/// <summary>
/// コンストラクタ
/// </summary>
/// <param name="triangleCount">三角形の個数</param>
/// <param name="vertices">頂点配列</param>
/// <param name="vertMap">モデルの頂点とMMDの頂点対応</param>
/// <param name="indexBuffer">インデックスバッファ</param>
public MMDGPUModelPartPNm(int triangleCount, MMDVertexNm[] vertices, Dictionary<long, int[]> vertMap, IndexBuffer indexBuffer)
: base(triangleCount, vertices.Length, vertMap, indexBuffer)
{
this.vertices = vertices;
//GPUリソース作成
gpuVertices = new VertexPositionNormal[vertices.Length];
vertexBuffer = new WritableVertexBuffer(indexBuffer.GraphicsDevice, vertices.Length * 4, typeof(VertexPositionNormal));
//初期値代入
for (int i = 0; i < vertices.Length; i++)
{
gpuVertices[i].Position = vertices[i].Position;
gpuVertices[i].Normal = vertices[i].Normal;
}
// put the vertices into our vertex buffer
vertexOffset = vertexBuffer.SetData(gpuVertices);
}
