void MakeMeshFromCode()
{
var vertices = new VertexPositionTexture[3];
vertices[0].Position = new Vector3(0f, 0f, 1f);
vertices[1].Position = new Vector3(0f, 1f, 0f);
vertices[2].Position = new Vector3(0f, 1f, 1f);
var vertexBuffer = Stride.Graphics.Buffer.Vertex.New(GraphicsDevice, vertices,
GraphicsResourceUsage.Dynamic);
int[] indices = { 0, 2, 1 };
var indexBuffer = Stride.Graphics.Buffer.Index.New(GraphicsDevice, indices);
var customMesh = new Stride.Rendering.Mesh
{
Draw = new Stride.Rendering.MeshDraw
{
/* Vertex buffer and index buffer setup */
PrimitiveType = Stride.Graphics.PrimitiveType.TriangleList,
DrawCount = indices.Length,
IndexBuffer = new IndexBufferBinding(indexBuffer, true, indices.Length),
VertexBuffers = new[] { new VertexBufferBinding(vertexBuffer,
VertexPositionTexture.Layout, vertexBuffer.ElementCount) },
}
};
// Create a new entity
var entity = new Entity();
entity.Transform.RotationEulerXYZ = new Vector3(0, 20, 0);
entity.Transform.Scale = new Vector3(0.2f, 0.2f, 0.2f);
entity.Transform.Position = new Vector3(0, 0, 0);
// create a model and assign to entity
var model = new Stride.Rendering.Model();
entity.GetOrCreate <ModelComponent>().Model = model;
// add the mesh to the model
model.Meshes.Add(customMesh);
// this is for solid color rendering...
var material = Material.New(GraphicsDevice, new MaterialDescriptor());
material.Passes[0].Parameters.Set(MaterialKeys.DiffuseValue, Color.Red);
model.Materials.Add(material);
// add entity to the root scene
SceneSystem.SceneInstance.RootScene.Entities.Add(entity);
}
public void LoadAssetTest(Vector3 position)
{
// Create a new entity and add it to the scene.
var entity = new Entity();
var rootScene = SceneSystem.SceneInstance.RootScene;
entity.Transform.RotationEulerXYZ = new Vector3(0, 20, 0);
entity.Transform.Scale = new Vector3(0.2f, 0.2f, 0.2f);
entity.Transform.Position = position;
// Create a new model from code
// https://doc.xenko.com/latest/en/manual/scripts/create-a-model-from-code.html
// Create a model and assign it to the model component.
var model = new Stride.Rendering.Model();
entity.GetOrCreate <ModelComponent>().Model = model;
// Add one or more meshes using geometric primitives (eg spheres or cubes).
//var meshDraw = Stride.Graphics.GeometricPrimitives.GeometricPrimitive.Sphere.New(GraphicsDevice).ToMeshDraw();
//var mesh = new Stride.Rendering.Mesh { Draw = meshDraw };
//model.Meshes.Add(mesh);
// create the Mesh
// https://github.com/stride3d/stride/blob/master/sources/editor/Stride.Assets.Presentation/AssetEditors/Gizmos/LightSpotGizmo.cs#L168
var CWD = System.IO.Directory.GetCurrentDirectory();
var assetBase = System.IO.Path.GetFullPath(System.IO.Path.Combine(CWD, @"..\..\..\DynLoadAssets\drone2\"));
var assetPath = (System.IO.Path.Combine(assetBase, "Drone2.obj"));
if (!System.IO.File.Exists(assetPath))
{
// not sure why, but DebugText.Print isn't working at the time of testing this...
DebugText.Print("Cannot find wavefront OBJ file at : " + assetPath, new Int2(50, 50));
return;
}
// load the wavefront OBJ file...
var wfData = new SimpleScene.Util3d.WavefrontObjLoader(assetPath);
// TODO: iterate over materials / multiple materials on the same mesh...
{
VertexPositionNormalTexture[] vertices;
UInt32[] triIndices;
Wavefront_VertexSoup_Stride3d.generateDrawIndexBuffer(wfData, wfData.materials[0], out triIndices, out vertices);
// convert into a graphics VB / IB pair
var vertexBuffer = Stride.Graphics.Buffer.Vertex.New(GraphicsDevice, vertices, GraphicsResourceUsage.Dynamic);
var indexBuffer = Stride.Graphics.Buffer.Index.New(GraphicsDevice, triIndices);
// add them to the drawing
var meshDraw = new Stride.Rendering.MeshDraw {
/* Vertex buffer and index buffer setup */
PrimitiveType = Stride.Graphics.PrimitiveType.TriangleList,
DrawCount = triIndices.Length,
VertexBuffers = new[] { new VertexBufferBinding(vertexBuffer, VertexPositionNormalTexture.Layout, vertexBuffer.ElementCount) },
IndexBuffer = new IndexBufferBinding(indexBuffer, true, triIndices.Length),
};
// GenerateTangentBinormal() won't work on a GPU buffer. It has to be run when the data is attached to a
// fake CPU buffer. (see build pipeline code)
// meshDraw.GenerateTangentBinormal();
var customMesh = new Stride.Rendering.Mesh {
Draw = meshDraw
};
// set the material index for this mesh
// customMesh.MaterialIndex = 0;
// add the mesh to the model
model.Meshes.Add(customMesh);
}
// load a texture from a file
// var diffuseTextureFilename = System.IO.Path.Combine(assetBase,wfData.materials[0].mtl.diffuseTextureResourceName);
// var diffTexStream = System.IO.File.Open(diffuseTextureFilename,System.IO.FileMode.Open,System.IO.FileAccess.Read);
// var diffuseTexture = Texture.Load(GraphicsDevice,diffTexStream);
// TODO: handle null textures
var diffuseTexture = textureObjectForWfTex(System.IO.Path.Combine(assetBase, wfData.materials[0].mtl.diffuseTextureResourceName));
var specularTexture = textureObjectForWfTex(System.IO.Path.Combine(assetBase, wfData.materials[0].mtl.specularTextureResourceName));
var emissiveTexture = textureObjectForWfTex(System.IO.Path.Combine(assetBase, wfData.materials[0].mtl.ambientTextureResourceName));
// note: bump/normal mapping won't won't work until Bitangents are calculated
// var bumpTexture = textureObjectForWfTex(System.IO.Path.Combine(assetBase,wfData.materials[0].mtl.bumpTextureResourceName));
var cc = new ComputeColor();
#if (true)
{ // load textures
var materialDescription = new Stride.Rendering.Materials.MaterialDescriptor
{
Attributes =
{
DiffuseModel = new MaterialDiffuseLambertModelFeature(),
Diffuse = new MaterialDiffuseMapFeature(new ComputeTextureColor(diffuseTexture)),
SpecularModel = new MaterialSpecularMicrofacetModelFeature {
},
Specular = new MaterialSpecularMapFeature {
SpecularMap = new ComputeTextureColor(specularTexture)
},
MicroSurface = new MaterialGlossinessMapFeature {
GlossinessMap = new ComputeFloat(0.7f)
},
Emissive = new MaterialEmissiveMapFeature(new ComputeTextureColor(emissiveTexture)),
// note: normal maps won't work until bitangents are calculated
// https://gist.github.com/johang88/3f175b045c8e8b55fb815cc19e6128ba
// see TNBExtensions.GenerateTangentBinormal(this MeshDraw meshData)
//Surface = new MaterialNormalMapFeature {
// NormalMap = new ComputeTextureColor(bumpTexture),
// IsXYNormal = true,
// ScaleAndBias = true,
// },
// this is for a solid color rendering...
// Diffuse = new MaterialDiffuseMapFeature(new ComputeColor { Key = MaterialKeys.DiffuseValue }),
}
};
var material = Material.New(GraphicsDevice, materialDescription);
material.Passes[0].Parameters.Set(MaterialKeys.EmissiveIntensity, 5.0f);
model.Materials.Add(material);
}
#else
// this is for solid color rendering...
var material = Material.New(GraphicsDevice, new MaterialDescriptor());
material.Passes[0].Parameters.Set(MaterialKeys.DiffuseValue, Color.Red);
model.Materials.Add(material);
#endif
SceneSystem.SceneInstance.RootScene.Entities.Add(entity);
}