internal void BuildRenderList(RenderList renderList, RenderInstanceData instanceData, MeshEffect effect)
{
var uniquePipelineStates = MaterialPasses
.SelectMany(x => x.MeshParts.Select(y => y.PipelineStateHandle))
.Distinct()
.ToList();
foreach (var pipelineStateHandle in uniquePipelineStates)
{
var filteredMaterialPasses = MaterialPasses
.Where(x => x.MeshParts.Any(y => y.PipelineStateHandle == pipelineStateHandle))
.ToList();
if (filteredMaterialPasses.Count > 0)
{
renderList.AddRenderItem(new InstancedRenderItem(
instanceData,
effect,
pipelineStateHandle,
(commandEncoder, e, h, _) =>
{
Draw(
commandEncoder,
effect,
h,
filteredMaterialPasses,
instanceData);
}));
}
}
}
private void Draw(
CommandEncoder commandEncoder,
MeshEffect meshEffect,
EffectPipelineStateHandle pipelineStateHandle,
IEnumerable <ModelMeshMaterialPass> materialPasses,
RenderInstanceData instanceData)
{
commandEncoder.SetVertexBuffer(2, instanceData.WorldBuffer);
if (Skinned)
{
meshEffect.SetSkinningBuffer(instanceData.SkinningBuffer);
meshEffect.SetNumBones(NumBones);
}
meshEffect.SetSkinningEnabled(Skinned);
meshEffect.SetMaterials(_materialsBuffer);
meshEffect.SetTextures(_textures);
commandEncoder.SetVertexBuffer(0, _vertexBuffer);
foreach (var materialPass in materialPasses)
{
meshEffect.SetTextureIndices(materialPass.TextureIndicesBuffer);
meshEffect.SetMaterialIndices(materialPass.MaterialIndicesBuffer);
meshEffect.SetNumTextureStages(materialPass.NumTextureStages);
commandEncoder.SetVertexBuffer(1, materialPass.TexCoordVertexBuffer);
foreach (var meshPart in materialPass.MeshParts)
{
if (meshPart.PipelineStateHandle != pipelineStateHandle)
{
continue;
}
meshEffect.SetPrimitiveOffset(meshPart.StartIndex / 3);
meshEffect.SetAlphaTest(meshPart.AlphaTest);
meshEffect.SetTexturing(meshPart.Texturing);
meshEffect.Apply(commandEncoder);
commandEncoder.DrawIndexedInstanced(
PrimitiveType.TriangleList,
meshPart.IndexCount,
instanceData.NumInstances,
_indexBuffer,
meshPart.StartIndex);
}
}
}
