protected override void CreateResources(ResourceFactory factory)
{
_projectionBuffer = factory.CreateBuffer(new BufferDescription(64, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_viewBuffer = factory.CreateBuffer(new BufferDescription(64, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_worldBuffer = factory.CreateBuffer(new BufferDescription(64, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
Matrix4x4 worldMatrix =
Matrix4x4.CreateTranslation(0, 15000, -5000)
* Matrix4x4.CreateRotationX(3 * MathF.PI / 2)
* Matrix4x4.CreateScale(0.05f);
_gd.UpdateBuffer(_worldBuffer, 0, ref worldMatrix);
Shader vs = LoadShader(factory, "Animated", ShaderStages.Vertex, "VS");
Shader fs = LoadShader(factory, "Animated", ShaderStages.Fragment, "FS");
ResourceLayout layout = factory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("Projection", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("View", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("World", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("Bones", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("SurfaceTex", ResourceKind.TextureReadOnly, ShaderStages.Fragment),
new ResourceLayoutElementDescription("SurfaceSampler", ResourceKind.Sampler, ShaderStages.Fragment)));
Texture texture = KtxFile.LoadTexture(
_gd,
factory,
GetAssetPath("textures/goblin_bc3_unorm.ktx"),
PixelFormat.BC3_UNorm);
_texView = _factory.CreateTextureView(texture);
VertexLayoutDescription vertexLayouts = new VertexLayoutDescription(
new[]
{
new VertexElementDescription("Position", VertexElementSemantic.Position, VertexElementFormat.Float3),
new VertexElementDescription("UV", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float2),
new VertexElementDescription("BoneWeights", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float4),
new VertexElementDescription("BoneIndices", VertexElementSemantic.TextureCoordinate, VertexElementFormat.UInt4),
});
GraphicsPipelineDescription gpd = new GraphicsPipelineDescription(
BlendStateDescription.SingleOverrideBlend,
DepthStencilStateDescription.DepthOnlyLessEqual,
new RasterizerStateDescription(FaceCullMode.Back, PolygonFillMode.Solid, FrontFace.CounterClockwise, true, false),
PrimitiveTopology.TriangleList,
new ShaderSetDescription(new[] { vertexLayouts }, new[] { vs, fs }),
layout,
_gd.SwapchainFramebuffer.OutputDescription);
_pipeline = factory.CreateGraphicsPipeline(ref gpd);
const string monsterAssetPath = "models/goblin.dae";
AssimpContext ac = new AssimpContext();
_scene = ac.ImportFile(GetAssetPath(monsterAssetPath), 0);
_rootNodeInverseTransform = _scene.RootNode.Transform;
_rootNodeInverseTransform.Inverse();
_firstMesh = _scene.Meshes[0];
AnimatedVertex[] vertices = new AnimatedVertex[_firstMesh.VertexCount];
for (int i = 0; i < vertices.Length; i++)
{
vertices[i].Position = new Vector3(_firstMesh.Vertices[i].X, _firstMesh.Vertices[i].Y, _firstMesh.Vertices[i].Z);
vertices[i].UV = new Vector2(_firstMesh.TextureCoordinateChannels[0][i].X, _firstMesh.TextureCoordinateChannels[0][i].Y);
}
_animation = _scene.Animations[0];
List <int> indices = new List <int>();
foreach (Face face in _firstMesh.Faces)
{
if (face.IndexCount == 3)
{
indices.Add(face.Indices[0]);
indices.Add(face.Indices[1]);
indices.Add(face.Indices[2]);
}
}
for (uint boneID = 0; boneID < _firstMesh.BoneCount; boneID++)
{
Bone bone = _firstMesh.Bones[(int)boneID];
_boneIDsByName.Add(bone.Name, boneID);
foreach (VertexWeight weight in bone.VertexWeights)
{
vertices[weight.VertexID].AddBone(boneID, weight.Weight);
}
}
Array.Resize(ref _boneTransformations, _firstMesh.BoneCount);
_bonesBuffer = _factory.CreateBuffer(new BufferDescription(
64 * 64, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
_rs = factory.CreateResourceSet(new ResourceSetDescription(layout,
_projectionBuffer, _viewBuffer, _worldBuffer, _bonesBuffer, _texView, _gd.Aniso4xSampler));
_indexCount = (uint)indices.Count;
_vertexBuffer = _factory.CreateBuffer(new BufferDescription(
(uint)(vertices.Length * Unsafe.SizeOf <AnimatedVertex>()), BufferUsage.VertexBuffer));
_gd.UpdateBuffer(_vertexBuffer, 0, vertices);
_indexBuffer = _factory.CreateBuffer(new BufferDescription(
_indexCount * 4, BufferUsage.IndexBuffer));
_gd.UpdateBuffer(_indexBuffer, 0, indices.ToArray());
_cl = factory.CreateCommandList();
_camera = new Camera(_window.Width, _window.Height);
_camera.Position = new Vector3(0, 3, 5f);
_camera.MoveSpeed = 1000f;
_camera.FarDistance = 100000;
}
