private unsafe Texture Build(float[] data, uint width, uint height)
{
Veldrid.Texture texture = _components.Factory.CreateTexture(TextureDescription.Texture2D(
width, height, 1, 1, PixelFormat.R32_Float, TextureUsage.Sampled));
Span <float> span = data; //Not needed, as conversion of simple array implicit to span
var pixelSizeInBytes = 4u; //Not needed, but just explains what the magic four would be for, geddit? :)
fixed(void *pin = &MemoryMarshal.GetReference(span))
{
_components.Device.UpdateTexture(
texture,
(IntPtr)pin,
pixelSizeInBytes * width * height,
0,
0,
0,
width,
height,
1,
0,
0);
}
return(texture);
}
public Texture(ImageSharpTexture imageTexture, Veldrid.Texture deviceTexture, TextureView textureView, long hash)
{
_imageTexture = imageTexture;
_deviceTexture = deviceTexture;
_textureView = textureView;
_hash = hash;
_size = new Vector2(_imageTexture.Width, _imageTexture.Height);
}
public static unsafe IntPtr Create(Image <Rgba32> image)
{
lock (LockObject)
{
Veldrid.Texture texture = GraphicsDevice.ResourceFactory.CreateTexture(TextureDescription.Texture2D((uint)image.Width, (uint)image.Height, 1, 1, PixelFormat.R8_G8_B8_A8_UNorm, TextureUsage.Sampled));
fixed(void *pin = &MemoryMarshal.GetReference(image.GetPixelRowSpan(0)))
{
GraphicsDevice.UpdateTexture(texture, (IntPtr)pin, (uint)(4 * image.Width * image.Height), 0, 0, 0, (uint)image.Width, (uint)image.Height, 1, 0, 0);
}
return(Controller.GetOrCreateImGuiBinding(GraphicsDevice.ResourceFactory, texture));
}
}
public Texture(RenderContext context, int width, int height, byte[] data, TextureSampleType sampleType)
{
uint w = (uint)width, h = (uint)height;
uint numMips = 4;
if (w < 16 || h < 16)
{
numMips = 1;
}
var device = context.Device;
_texture = device.ResourceFactory.CreateTexture(TextureDescription.Texture2D(
w, h, numMips, 1,
PixelFormat.B8_G8_R8_A8_UNorm,
TextureUsage.Sampled | TextureUsage.GenerateMipmaps
));
try
{
device.UpdateTexture(_texture, data, 0, 0, 0, w, h, _texture.Depth, 0, 0);
}
catch
{
// Error updating texture, the texture may have been disposed
}
_mipsGenerated = false;
var sampler = context.ResourceLoader.TextureSampler;
if (sampleType == TextureSampleType.Point)
{
sampler = context.ResourceLoader.OverlaySampler;
}
_view = device.ResourceFactory.CreateTextureView(_texture);
_set = device.ResourceFactory.CreateResourceSet(new ResourceSetDescription(
context.ResourceLoader.TextureLayout, _view, sampler
));
}
private void PostImageLoad()
{
uint tx = (uint)Size.X;
uint ty = (uint)Size.Y;
Texture = Renderer.VeldridFactory.CreateTexture(new Veldrid.TextureDescription(
tx, ty, 1,
1, 1,
Veldrid.PixelFormat.R8_G8_B8_A8_UNorm, Veldrid.TextureUsage.Sampled, Veldrid.TextureType.Texture2D));
Veldrid.Texture StagingTexture = Renderer.VeldridFactory.CreateTexture(new Veldrid.TextureDescription(
tx, ty, 1,
1, 1,
Veldrid.PixelFormat.R8_G8_B8_A8_UNorm, Veldrid.TextureUsage.Staging, Veldrid.TextureType.Texture2D));
Span <Rgba32> Pixels;
InternalTexture.TryGetSinglePixelSpan(out Pixels);
Span <byte> Bytes = MemoryMarshal.AsBytes(Pixels);
//TODO: Fix this copy (Bytes.ToArray()) and use the memory directly. UpdateTexture takes an intptr so get that
Renderer.GraphicsDevice.UpdateTexture(StagingTexture, Bytes.ToArray(),
0, 0, 0,
tx, ty, 1,
0, 0);
using (Veldrid.CommandList cl = Renderer.VeldridFactory.CreateCommandList())
{
cl.Begin();
cl.CopyTexture(StagingTexture, Texture);
cl.End();
Renderer.GraphicsDevice.SubmitCommands(cl);
Renderer.GraphicsDevice.WaitForIdle();
}
}
internal static ulong ComputeSubresourceOffset(Texture tex, uint mipLevel, uint arrayLayer)
{
Debug.Assert((tex.Usage & TextureUsage.Staging) == TextureUsage.Staging);
return(ComputeArrayLayerOffset(tex, arrayLayer) + ComputeMipOffset(tex, mipLevel));
}
internal static void GetMipDimensions(Texture tex, uint mipLevel, out uint width, out uint height, out uint depth)
{
width = GetDimension(tex.Width, mipLevel);
height = GetDimension(tex.Height, mipLevel);
depth = GetDimension(tex.Depth, mipLevel);
}
internal static void GetMipLevelAndArrayLayer(Texture tex, uint subresource, out uint mipLevel, out uint arrayLayer)
{
arrayLayer = subresource / tex.MipLevels;
mipLevel = subresource - (arrayLayer * tex.MipLevels);
}