/// <summary>
/// Release the memory from the VRAM.
/// </summary>
public void ReleaseMemory()
{
StagingBuffer?.Dispose();
StagingBuffer = null;
IndexBuffer?.Dispose();
IndexBuffer = null;
StagingVRAM?.Free();
VertexVRAM?.Free();
}
/// <summary>
/// Setups all the GPU beheviors.
/// </summary>
public void Setup()
{
uint GetSuitableMemory(PhysicalDeviceMemoryProperties props, MemoryRequirements reqs, MemoryPropertyFlags flags)
{
int memIndex = -1;
for (int i = 0; i < props.MemoryTypes.Length; ++i)
{
if ((reqs.MemoryTypeBits & (1 << i)) != 0 && (props.MemoryTypes[i].PropertyFlags & flags) == flags)
{
memIndex = i;
}
}
if (memIndex < 0)
{
throw new NotSupportedException("Failed to allocate vertex buffer memory.");
}
return((uint)memIndex);
}
// - Gets the physical memory properties
var memory = RenderDevice.Physical.Handle.GetMemoryProperties();
try
{
// - Create the vertex buffer visible from the CPU
StagingBuffer = RenderDevice.Handle.CreateBuffer
(
HeapSize,
BufferUsageFlags.TransferSource,
SharingMode.Exclusive,
null
);
// - Create the vertex buffer inside the GPU private memory
IndexBuffer = RenderDevice.Handle.CreateBuffer
(
HeapSize,
BufferUsageFlags.IndexBuffer | BufferUsageFlags.TransferDestination,
SharingMode.Exclusive,
null
);
// - Gets all requirements
var vertReq = IndexBuffer.GetMemoryRequirements();
var stagReq = StagingBuffer.GetMemoryRequirements();
var vertMemoryIndex = GetSuitableMemory(memory, vertReq, MemoryPropertyFlags.DeviceLocal);
var stagMemoryIndex = GetSuitableMemory(memory, stagReq, MemoryPropertyFlags.HostVisible | MemoryPropertyFlags.HostCoherent);
// - Allocate the required memory on the VRAM
VertexVRAM = RenderDevice.Handle.AllocateMemory(vertReq.Size, vertMemoryIndex);
StagingVRAM = RenderDevice.Handle.AllocateMemory(stagReq.Size, stagMemoryIndex);
// - Bind memory to the buffers
IndexBuffer.BindMemory(VertexVRAM, 0);
StagingBuffer.BindMemory(StagingVRAM, 0);
}
catch
{
// TODO: Add exception management
}
}
public virtual void Dispose()
{
StagingBuffer.Dispose();
DeviceBuffer.Dispose();
}