/// <summary>
/// Initializes a new instance of the <see cref="Mesh" /> class.
/// </summary>
/// <param name="meshDraw">The mesh draw.</param>
/// <param name="parameters">The parameters.</param>
/// <exception cref="System.ArgumentNullException">parameters</exception>
public Mesh(MeshDraw meshDraw, ParameterCollection parameters)
{
if (meshDraw == null)
{
throw new ArgumentNullException("meshDraw");
}
if (parameters == null)
{
throw new ArgumentNullException("parameters");
}
Draw = meshDraw;
Parameters = parameters;
}
private InputElementDescription[] PrepareInputElements(PipelineStateDescription pipelineState, MeshDraw drawData)
{
// Get the input elements already contained in the mesh's vertex buffers
var availableInputElements = drawData.VertexBuffers.CreateInputElements();
var inputElements = new List <InputElementDescription>(availableInputElements);
// In addition, add input elements for all attributes that are not contained in a bound buffer, but required by the shader
foreach (var inputAttribute in pipelineState.EffectBytecode.Reflection.InputAttributes)
{
var inputElementIndex = FindElementBySemantic(availableInputElements, inputAttribute.SemanticName, inputAttribute.SemanticIndex);
// Provided by any vertex buffer?
if (inputElementIndex >= 0)
{
continue;
}
inputElements.Add(new InputElementDescription
{
AlignedByteOffset = 0,
Format = PixelFormat.R32G32B32A32_Float,
InputSlot = drawData.VertexBuffers.Length,
InputSlotClass = InputClassification.Vertex,
InstanceDataStepRate = 0,
SemanticIndex = inputAttribute.SemanticIndex,
SemanticName = inputAttribute.SemanticName,
});
}
return(inputElements.ToArray());
}
/// <inheritdoc/>
public override void Draw(RenderDrawContext context, RenderView renderView, RenderViewStage renderViewStage, int startIndex, int endIndex)
{
var commandList = context.CommandList;
foreach (var renderFeature in RenderFeatures)
{
renderFeature.Draw(context, renderView, renderViewStage, startIndex, endIndex);
}
// TODO: stackalloc?
var descriptorSetsLocal = descriptorSets.Value;
if (descriptorSetsLocal == null || descriptorSetsLocal.Length < EffectDescriptorSetSlotCount)
{
descriptorSetsLocal = descriptorSets.Value = new DescriptorSet[EffectDescriptorSetSlotCount];
}
MeshDraw currentDrawData = null;
int emptyBufferSlot = -1;
for (int index = startIndex; index < endIndex; index++)
{
var renderNodeReference = renderViewStage.SortedRenderNodes[index].RenderNode;
var renderNode = GetRenderNode(renderNodeReference);
var renderMesh = (RenderMesh)renderNode.RenderObject;
var drawData = renderMesh.ActiveMeshDraw;
// Get effect
// TODO: Use real effect slot
var renderEffect = renderNode.RenderEffect;
if (renderEffect.Effect == null)
{
continue;
}
// Bind VB
if (currentDrawData != drawData)
{
for (int slot = 0; slot < drawData.VertexBuffers.Length; slot++)
{
var vertexBuffer = drawData.VertexBuffers[slot];
commandList.SetVertexBuffer(slot, vertexBuffer.Buffer, vertexBuffer.Offset, vertexBuffer.Stride);
}
// If the mesh's vertex buffers miss any input streams, an additional input binding will have been added to the pipeline state.
// We bind an additional empty vertex buffer to that slot handle those streams gracefully.
if (emptyBufferSlot != drawData.VertexBuffers.Length)
{
commandList.SetVertexBuffer(drawData.VertexBuffers.Length, emptyBuffer, 0, 0);
emptyBufferSlot = drawData.VertexBuffers.Length;
}
if (drawData.IndexBuffer != null)
{
commandList.SetIndexBuffer(drawData.IndexBuffer.Buffer, drawData.IndexBuffer.Offset, drawData.IndexBuffer.Is32Bit);
}
currentDrawData = drawData;
}
var resourceGroupOffset = ComputeResourceGroupOffset(renderNodeReference);
// Update cbuffer
renderEffect.Reflection.BufferUploader.Apply(context.CommandList, ResourceGroupPool, resourceGroupOffset);
// Bind descriptor sets
for (int i = 0; i < descriptorSetsLocal.Length; ++i)
{
var resourceGroup = ResourceGroupPool[resourceGroupOffset++];
if (resourceGroup != null)
{
descriptorSetsLocal[i] = resourceGroup.DescriptorSet;
}
}
commandList.SetPipelineState(renderEffect.PipelineState);
commandList.SetDescriptorSets(0, descriptorSetsLocal);
// Draw
if (drawData.IndexBuffer == null)
{
if (renderMesh.InstanceCount > 0)
{
commandList.DrawInstanced(drawData.DrawCount, renderMesh.InstanceCount, drawData.StartLocation);
}
else
{
commandList.Draw(drawData.DrawCount, drawData.StartLocation);
}
}
else
{
if (renderMesh.InstanceCount > 0)
{
commandList.DrawIndexedInstanced(drawData.DrawCount, renderMesh.InstanceCount, drawData.StartLocation);
}
else
{
commandList.DrawIndexed(drawData.DrawCount, drawData.StartLocation);
}
}
}
}
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);
}
