public AttributelessObject(
RenderScene scene,
int vertexCount,
ReadOnlySpan <TextureInfo> textureInfos)
{
if (scene == null)
{
throw new ArgumentNullException(nameof(scene));
}
this.vertexCount = vertexCount;
//Prepare the inputs
inputs = new IShaderInput[textureInfos.Length];
for (int i = 0; i < inputs.Length; i++)
{
DeviceTexture texture = DeviceTexture.UploadTexture(
texture: textureInfos[i].Texture as IInternalTexture,
scene, generateMipMaps: textureInfos[i].UseMipMaps);
inputs[i] = new DeviceSampler(
scene.LogicalDevice,
texture,
disposeTexture: true,
repeat: textureInfos[i].Repeat,
maxAnisotropy: 8f);
}
}
public InstancedObject(
RenderScene scene,
Mesh mesh,
TextureInfo[] textureInfos,
int maxInstances = 100_000)
{
if (scene == null)
{
throw new ArgumentNullException(nameof(scene));
}
if (mesh == null)
{
throw new ArgumentNullException(nameof(mesh));
}
//Prepare the inputs
inputs = new IShaderInput[textureInfos.Length];
for (int i = 0; i < inputs.Length; i++)
{
DeviceTexture texture = DeviceTexture.UploadTexture(
texture: textureInfos[i].Texture as IInternalTexture,
scene, generateMipMaps: textureInfos[i].UseMipMaps);
inputs[i] = new DeviceSampler(
scene.LogicalDevice,
texture,
disposeTexture: true,
repeat: textureInfos[i].Repeat,
maxAnisotropy: 8f);
}
//Upload our mesh to the gpu
deviceMesh = new DeviceMesh(mesh, scene);
//Allocate a buffers for the instance data and indirect args
instanceDataBuffer = new Memory.HostBuffer(
logicalDevice: scene.LogicalDevice,
memoryPool: scene.MemoryPool,
usages: BufferUsages.VertexBuffer,
size: InstanceData.SIZE * maxInstances);
indirectArgumentsBuffer = new Memory.HostBuffer(
logicalDevice: scene.LogicalDevice,
memoryPool: scene.MemoryPool,
usages: BufferUsages.IndirectBuffer,
size: DrawIndexedIndirectCommand.SIZE);
//Write defaults to the indirect args buffer
indirectArgumentsBuffer.Write(new DrawIndexedIndirectCommand(
indexCount: (uint)deviceMesh.IndexCount,
instanceCount: 0, firstIndex: 0, vertexOffset: 0, firstInstance: 0));
}