private protected Texture(TextureType type, uint w, uint h, uint d, uint layers)
{
Device = SpectrumApp.Instance.GraphicsDevice;
Type = type;
Width = w;
Height = h;
Depth = d;
Layers = layers;
// Limits checking
if (w == 0)
{
throw new ArgumentOutOfRangeException(nameof(w), "A texture cannot have a width of zero");
}
if (h == 0)
{
throw new ArgumentOutOfRangeException(nameof(h), "A texture cannot have a height of zero");
}
if (d == 0)
{
throw new ArgumentOutOfRangeException(nameof(d), "A texture cannot have a depth of zero");
}
if (layers == 0)
{
throw new ArgumentOutOfRangeException(nameof(layers), "A texture cannot have 0 layers");
}
if (type == TextureType.Texture3D && layers != 1)
{
throw new ArgumentOutOfRangeException(nameof(layers), "3D textures cannot be arrays");
}
if (layers > Limits.MaxTextureLayers)
{
throw new ArgumentOutOfRangeException(nameof(layers), $"The texture array count ({layers}) is too big for the device ({Limits.MaxTextureLayers})");
}
switch (type)
{
case TextureType.Texture1D:
if (w > Limits.MaxTextureSize1D)
{
throw new ArgumentOutOfRangeException(
nameof(w), $"The 1D texture size ({w}) is too big for the device ({Limits.MaxTextureSize1D})"
);
}
break;
case TextureType.Texture2D:
if (w > Limits.MaxTextureSize2D || h > Limits.MaxTextureSize2D)
{
throw new ArgumentOutOfRangeException(
nameof(w), $"The 2D texture size ({w}x{h}) is too big for the device ({Limits.MaxTextureSize2D})"
);
}
break;
case TextureType.Texture3D:
if (w > Limits.MaxTextureSize3D || h > Limits.MaxTextureSize3D || d > Limits.MaxTextureSize3D)
{
throw new ArgumentOutOfRangeException(
nameof(w), $"The 3D texture size ({w}x{h}x{d}) is too big for the device ({Limits.MaxTextureSize3D})"
);
}
break;
}
// Create the image
var ici = new Vk.ImageCreateInfo {
ImageType = (Vk.ImageType)type,
Extent = new Vk.Extent3D((int)w, (int)h, (int)d),
MipLevels = 1,
ArrayLayers = (int)layers,
Format = Vk.Format.R8G8B8A8UNorm,
Tiling = Vk.ImageTiling.Optimal,
InitialLayout = Vk.ImageLayout.Undefined,
Usage = Vk.ImageUsages.TransferDst | Vk.ImageUsages.Sampled | Vk.ImageUsages.TransferSrc,
SharingMode = Vk.SharingMode.Exclusive,
Samples = Vk.SampleCounts.Count1,
Flags = Vk.ImageCreateFlags.None
};
VkImage = Device.VkDevice.CreateImage(ici);
// Create the backing memory for the image
var memReq = VkImage.GetMemoryRequirements();
var memIdx = Device.FindMemoryTypeIndex(memReq.MemoryTypeBits, Vk.MemoryProperties.DeviceLocal);
if (memIdx == -1)
{
throw new InvalidOperationException("Cannot find a memory type that supports textures (this means bad or out-of-date hardware)");
}
var mai = new Vk.MemoryAllocateInfo(memReq.Size, memIdx);
VkMemory = Device.VkDevice.AllocateMemory(mai);
DataSize = (uint)memReq.Size;
VkImage.BindMemory(VkMemory);
// Create the view
var vci = new Vk.ImageViewCreateInfo(
Vk.Format.R8G8B8A8UNorm,
new Vk.ImageSubresourceRange(Vk.ImageAspects.Color, 0, 1, 0, (int)Layers),
viewType: GetViewType(Type, layers)
);
VkView = VkImage.CreateView(vci);
// Make the initial layout transition
Device.SubmitScratchCommand(buf => {
buf.CmdPipelineBarrier(Vk.PipelineStages.AllGraphics, Vk.PipelineStages.AllGraphics, imageMemoryBarriers: new[] { new Vk.ImageMemoryBarrier(
VkImage, new Vk.ImageSubresourceRange(Vk.ImageAspects.Color, 0, 1, 0, 1), Vk.Accesses.None, Vk.Accesses.ShaderRead,
Vk.ImageLayout.Undefined, Vk.ImageLayout.ShaderReadOnlyOptimal
) });
});
}