forked from MoonsideGames/MoonWorks
653 lines
18 KiB
C#
653 lines
18 KiB
C#
using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using RefreshCS;
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namespace MoonWorks.Graphics
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{
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/// <summary>
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/// A container for pixel data.
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/// </summary>
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public class Texture : GraphicsResource
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{
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public uint Width { get; internal set; }
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public uint Height { get; internal set; }
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public uint Depth { get; }
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public TextureFormat Format { get; internal set; }
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public bool IsCube { get; }
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public uint LevelCount { get; }
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public SampleCount SampleCount { get; }
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public TextureUsageFlags UsageFlags { get; }
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// FIXME: this allocates a delegate instance
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protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyTexture;
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/// <summary>
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/// Creates a 2D Texture using PNG or QOI data from raw byte data.
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/// </summary>
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public static unsafe Texture FromImageBytes(
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GraphicsDevice device,
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CommandBuffer commandBuffer,
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Span<byte> data
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) {
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Texture texture;
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fixed (byte *dataPtr = data)
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{
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var pixels = Refresh.Refresh_Image_Load((nint) dataPtr, data.Length, out var width, out var height, out var len);
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TextureCreateInfo textureCreateInfo = new TextureCreateInfo();
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textureCreateInfo.Width = (uint) width;
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textureCreateInfo.Height = (uint) height;
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textureCreateInfo.Depth = 1;
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textureCreateInfo.Format = TextureFormat.R8G8B8A8;
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textureCreateInfo.IsCube = false;
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textureCreateInfo.LevelCount = 1;
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textureCreateInfo.SampleCount = SampleCount.One;
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textureCreateInfo.UsageFlags = TextureUsageFlags.Sampler;
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texture = new Texture(device, textureCreateInfo);
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commandBuffer.SetTextureData(texture, pixels, (uint) len);
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Refresh.Refresh_Image_Free(pixels);
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}
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return texture;
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}
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/// <summary>
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/// Creates a 2D Texture using PNG or QOI data from a stream.
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/// </summary>
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public static unsafe Texture FromImageStream(
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GraphicsDevice device,
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CommandBuffer commandBuffer,
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Stream stream
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) {
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var length = stream.Length;
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var buffer = NativeMemory.Alloc((nuint) length);
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var span = new Span<byte>(buffer, (int) length);
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stream.ReadExactly(span);
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var texture = FromImageBytes(device, commandBuffer, span);
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NativeMemory.Free((void*) buffer);
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return texture;
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}
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/// <summary>
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/// Creates a 2D Texture using PNG or QOI data from a file.
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/// </summary>
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public static Texture FromImageFile(
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GraphicsDevice device,
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CommandBuffer commandBuffer,
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string path
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) {
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var fileStream = new FileStream(path, FileMode.Open, FileAccess.Read);
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return FromImageStream(device, commandBuffer, fileStream);
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}
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public static unsafe void SetDataFromImageBytes(
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CommandBuffer commandBuffer,
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TextureSlice textureSlice,
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Span<byte> data
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) {
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fixed (byte* ptr = data)
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{
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var pixels = Refresh.Refresh_Image_Load(
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(nint) ptr,
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(int) data.Length,
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out var w,
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out var h,
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out var len
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);
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commandBuffer.SetTextureData(textureSlice, pixels, (uint) len);
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Refresh.Refresh_Image_Free(pixels);
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}
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}
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/// <summary>
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/// Sets data for a texture slice using PNG or QOI data from a stream.
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/// </summary>
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public static unsafe void SetDataFromImageStream(
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CommandBuffer commandBuffer,
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TextureSlice textureSlice,
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Stream stream
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) {
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var length = stream.Length;
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var buffer = NativeMemory.Alloc((nuint) length);
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var span = new Span<byte>(buffer, (int) length);
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stream.ReadExactly(span);
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SetDataFromImageBytes(commandBuffer, textureSlice, span);
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NativeMemory.Free((void*) buffer);
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}
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/// <summary>
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/// Sets data for a texture slice using PNG or QOI data from a file.
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/// </summary>
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public static void SetDataFromImageFile(
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CommandBuffer commandBuffer,
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TextureSlice textureSlice,
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string path
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) {
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var fileStream = new FileStream(path, FileMode.Open, FileAccess.Read);
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SetDataFromImageStream(commandBuffer, textureSlice, fileStream);
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}
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public unsafe static Texture LoadDDS(GraphicsDevice graphicsDevice, CommandBuffer commandBuffer, System.IO.Stream stream)
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{
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using var reader = new BinaryReader(stream);
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Texture texture;
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int faces;
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ParseDDS(reader, out var format, out var width, out var height, out var levels, out var isCube);
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if (isCube)
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{
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texture = CreateTextureCube(graphicsDevice, (uint) width, format, TextureUsageFlags.Sampler, (uint) levels);
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faces = 6;
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}
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else
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{
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texture = CreateTexture2D(graphicsDevice, (uint) width, (uint) height, format, TextureUsageFlags.Sampler, (uint) levels);
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faces = 1;
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}
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for (int i = 0; i < faces; i += 1)
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{
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for (int j = 0; j < levels; j += 1)
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{
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var levelWidth = width >> j;
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var levelHeight = height >> j;
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var levelSize = CalculateDDSLevelSize(levelWidth, levelHeight, format);
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var byteBuffer = NativeMemory.Alloc((nuint) levelSize);
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var byteSpan = new Span<byte>(byteBuffer, levelSize);
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stream.ReadExactly(byteSpan);
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var textureSlice = new TextureSlice(texture, new Rect(0, 0, levelWidth, levelHeight), 0, (uint) i, (uint) j);
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commandBuffer.SetTextureData(textureSlice, (nint) byteBuffer, (uint) levelSize);
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NativeMemory.Free(byteBuffer);
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}
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}
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return texture;
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}
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/// <summary>
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/// Creates a 2D texture.
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/// </summary>
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/// <param name="device">An initialized GraphicsDevice.</param>
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/// <param name="width">The width of the texture.</param>
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/// <param name="height">The height of the texture.</param>
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/// <param name="format">The format of the texture.</param>
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/// <param name="usageFlags">Specifies how the texture will be used.</param>
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/// <param name="levelCount">Specifies the number of mip levels.</param>
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public static Texture CreateTexture2D(
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GraphicsDevice device,
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uint width,
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uint height,
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TextureFormat format,
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TextureUsageFlags usageFlags,
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uint levelCount = 1,
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SampleCount sampleCount = SampleCount.One
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) {
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var textureCreateInfo = new TextureCreateInfo
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{
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Width = width,
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Height = height,
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Depth = 1,
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IsCube = false,
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LevelCount = levelCount,
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SampleCount = sampleCount,
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Format = format,
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UsageFlags = usageFlags
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};
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return new Texture(device, textureCreateInfo);
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}
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/// <summary>
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/// Creates a 3D texture.
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/// </summary>
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/// <param name="device">An initialized GraphicsDevice.</param>
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/// <param name="width">The width of the texture.</param>
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/// <param name="height">The height of the texture.</param>
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/// <param name="depth">The depth of the texture.</param>
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/// <param name="format">The format of the texture.</param>
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/// <param name="usageFlags">Specifies how the texture will be used.</param>
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/// <param name="levelCount">Specifies the number of mip levels.</param>
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public static Texture CreateTexture3D(
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GraphicsDevice device,
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uint width,
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uint height,
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uint depth,
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TextureFormat format,
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TextureUsageFlags usageFlags,
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uint levelCount = 1
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) {
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var textureCreateInfo = new TextureCreateInfo
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{
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Width = width,
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Height = height,
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Depth = depth,
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IsCube = false,
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LevelCount = levelCount,
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Format = format,
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UsageFlags = usageFlags
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};
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return new Texture(device, textureCreateInfo);
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}
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/// <summary>
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/// Creates a cube texture.
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/// </summary>
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/// <param name="device">An initialized GraphicsDevice.</param>
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/// <param name="size">The length of one side of the cube.</param>
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/// <param name="format">The format of the texture.</param>
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/// <param name="usageFlags">Specifies how the texture will be used.</param>
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/// <param name="levelCount">Specifies the number of mip levels.</param>
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public static Texture CreateTextureCube(
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GraphicsDevice device,
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uint size,
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TextureFormat format,
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TextureUsageFlags usageFlags,
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uint levelCount = 1
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) {
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var textureCreateInfo = new TextureCreateInfo
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{
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Width = size,
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Height = size,
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Depth = 1,
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IsCube = true,
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LevelCount = levelCount,
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Format = format,
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UsageFlags = usageFlags
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};
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return new Texture(device, textureCreateInfo);
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}
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/// <summary>
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/// Creates a new texture using a TextureCreateInfo struct.
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/// </summary>
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/// <param name="device">An initialized GraphicsDevice.</param>
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/// <param name="textureCreateInfo">The parameters to use when creating the texture.</param>
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public Texture(
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GraphicsDevice device,
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in TextureCreateInfo textureCreateInfo
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) : base(device)
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{
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Handle = Refresh.Refresh_CreateTexture(
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device.Handle,
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textureCreateInfo.ToRefreshTextureCreateInfo()
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);
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Format = textureCreateInfo.Format;
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Width = textureCreateInfo.Width;
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Height = textureCreateInfo.Height;
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Depth = textureCreateInfo.Depth;
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IsCube = textureCreateInfo.IsCube;
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LevelCount = textureCreateInfo.LevelCount;
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SampleCount = textureCreateInfo.SampleCount;
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UsageFlags = textureCreateInfo.UsageFlags;
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}
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public static implicit operator TextureSlice(Texture t) => new TextureSlice(t);
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// Used by AcquireSwapchainTexture.
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// Should not be tracked, because swapchain textures are managed by Vulkan.
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internal Texture(
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GraphicsDevice device,
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IntPtr handle,
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TextureFormat format,
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uint width,
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uint height
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) : base(device, false)
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{
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Handle = handle;
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Format = format;
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Width = width;
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Height = height;
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Depth = 1;
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IsCube = false;
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LevelCount = 1;
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SampleCount = SampleCount.One;
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UsageFlags = TextureUsageFlags.ColorTarget;
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}
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// DDS loading extension, based on MojoDDS
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// Taken from https://github.com/FNA-XNA/FNA/blob/1e49f868f595f62bc6385db45949a03186a7cd7f/src/Graphics/Texture.cs#L194
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private static void ParseDDS(
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BinaryReader reader,
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out TextureFormat format,
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out int width,
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out int height,
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out int levels,
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out bool isCube
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) {
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// A whole bunch of magic numbers, yay DDS!
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const uint DDS_MAGIC = 0x20534444;
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const uint DDS_HEADERSIZE = 124;
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const uint DDS_PIXFMTSIZE = 32;
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const uint DDSD_HEIGHT = 0x2;
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const uint DDSD_WIDTH = 0x4;
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const uint DDSD_PITCH = 0x8;
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const uint DDSD_LINEARSIZE = 0x80000;
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const uint DDSD_REQ = (
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DDSD_HEIGHT | DDSD_WIDTH
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);
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const uint DDSCAPS_MIPMAP = 0x400000;
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const uint DDSCAPS_TEXTURE = 0x1000;
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const uint DDSCAPS2_CUBEMAP = 0x200;
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const uint DDPF_FOURCC = 0x4;
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const uint DDPF_RGB = 0x40;
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const uint FOURCC_DXT1 = 0x31545844;
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const uint FOURCC_DXT3 = 0x33545844;
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const uint FOURCC_DXT5 = 0x35545844;
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const uint FOURCC_DX10 = 0x30315844;
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const uint pitchAndLinear = (
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DDSD_PITCH | DDSD_LINEARSIZE
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);
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// File should start with 'DDS '
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if (reader.ReadUInt32() != DDS_MAGIC)
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{
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throw new NotSupportedException("Not a DDS!");
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}
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// Texture info
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uint size = reader.ReadUInt32();
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if (size != DDS_HEADERSIZE)
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{
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throw new NotSupportedException("Invalid DDS header!");
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}
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uint flags = reader.ReadUInt32();
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if ((flags & DDSD_REQ) != DDSD_REQ)
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{
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throw new NotSupportedException("Invalid DDS flags!");
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}
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if ((flags & pitchAndLinear) == pitchAndLinear)
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{
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throw new NotSupportedException("Invalid DDS flags!");
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}
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height = reader.ReadInt32();
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width = reader.ReadInt32();
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reader.ReadUInt32(); // dwPitchOrLinearSize, unused
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reader.ReadUInt32(); // dwDepth, unused
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levels = reader.ReadInt32();
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// "Reserved"
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reader.ReadBytes(4 * 11);
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// Format info
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uint formatSize = reader.ReadUInt32();
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if (formatSize != DDS_PIXFMTSIZE)
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{
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throw new NotSupportedException("Bogus PIXFMTSIZE!");
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}
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uint formatFlags = reader.ReadUInt32();
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uint formatFourCC = reader.ReadUInt32();
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uint formatRGBBitCount = reader.ReadUInt32();
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uint formatRBitMask = reader.ReadUInt32();
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uint formatGBitMask = reader.ReadUInt32();
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uint formatBBitMask = reader.ReadUInt32();
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uint formatABitMask = reader.ReadUInt32();
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// dwCaps "stuff"
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uint caps = reader.ReadUInt32();
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if ((caps & DDSCAPS_TEXTURE) == 0)
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{
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throw new NotSupportedException("Not a texture!");
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}
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isCube = false;
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uint caps2 = reader.ReadUInt32();
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if (caps2 != 0)
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{
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if ((caps2 & DDSCAPS2_CUBEMAP) == DDSCAPS2_CUBEMAP)
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{
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isCube = true;
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}
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else
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{
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throw new NotSupportedException("Invalid caps2!");
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}
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}
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reader.ReadUInt32(); // dwCaps3, unused
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reader.ReadUInt32(); // dwCaps4, unused
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// "Reserved"
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reader.ReadUInt32();
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// Mipmap sanity check
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if ((caps & DDSCAPS_MIPMAP) != DDSCAPS_MIPMAP)
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{
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levels = 1;
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}
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// Determine texture format
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if ((formatFlags & DDPF_FOURCC) == DDPF_FOURCC)
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{
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switch (formatFourCC)
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{
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case 0x71: // D3DFMT_A16B16G16R16F
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format = TextureFormat.R16G16B16A16_SFLOAT;
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break;
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case 0x74: // D3DFMT_A32B32G32R32F
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format = TextureFormat.R32G32B32A32_SFLOAT;
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break;
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case FOURCC_DXT1:
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format = TextureFormat.BC1;
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break;
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case FOURCC_DXT3:
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format = TextureFormat.BC2;
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break;
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case FOURCC_DXT5:
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format = TextureFormat.BC3;
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break;
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case FOURCC_DX10:
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// If the fourCC is DX10, there is an extra header with additional format information.
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uint dxgiFormat = reader.ReadUInt32();
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// These values are taken from the DXGI_FORMAT enum.
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switch (dxgiFormat)
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{
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case 2:
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format = TextureFormat.R32G32B32A32_SFLOAT;
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break;
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case 10:
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format = TextureFormat.R16G16B16A16_SFLOAT;
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break;
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case 71:
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format = TextureFormat.BC1;
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break;
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case 74:
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format = TextureFormat.BC2;
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break;
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case 77:
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format = TextureFormat.BC3;
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break;
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case 98:
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format = TextureFormat.BC7;
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break;
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default:
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throw new NotSupportedException(
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"Unsupported DDS texture format"
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);
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}
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uint resourceDimension = reader.ReadUInt32();
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// These values are taken from the D3D10_RESOURCE_DIMENSION enum.
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switch (resourceDimension)
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{
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case 0: // Unknown
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case 1: // Buffer
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throw new NotSupportedException(
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"Unsupported DDS texture format"
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);
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default:
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break;
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}
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/*
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* This flag seemingly only indicates if the texture is a cube map.
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* This is already determined above. Cool!
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*/
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uint miscFlag = reader.ReadUInt32();
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/*
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* Indicates the number of elements in the texture array.
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* We don't support texture arrays so just throw if it's greater than 1.
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*/
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uint arraySize = reader.ReadUInt32();
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if (arraySize > 1)
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{
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throw new NotSupportedException(
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"Unsupported DDS texture format"
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);
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}
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reader.ReadUInt32(); // reserved
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break;
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default:
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throw new NotSupportedException(
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"Unsupported DDS texture format"
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);
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}
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}
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else if ((formatFlags & DDPF_RGB) == DDPF_RGB)
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{
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if ( formatRGBBitCount != 32 ||
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formatRBitMask != 0x00FF0000 ||
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formatGBitMask != 0x0000FF00 ||
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formatBBitMask != 0x000000FF ||
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formatABitMask != 0xFF000000 )
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{
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throw new NotSupportedException(
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"Unsupported DDS texture format"
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);
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}
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format = TextureFormat.B8G8R8A8;
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}
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else
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{
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throw new NotSupportedException(
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"Unsupported DDS texture format"
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);
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}
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}
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private static int CalculateDDSLevelSize(
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int width,
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int height,
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TextureFormat format
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) {
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|
if (format == TextureFormat.R8G8B8A8)
|
|
{
|
|
return (((width * 32) + 7) / 8) * height;
|
|
}
|
|
else if (format == TextureFormat.R16G16B16A16_SFLOAT)
|
|
{
|
|
return (((width * 64) + 7) / 8) * height;
|
|
}
|
|
else if (format == TextureFormat.R32G32B32A32_SFLOAT)
|
|
{
|
|
return (((width * 128) + 7) / 8) * height;
|
|
}
|
|
else
|
|
{
|
|
int blockSize = 16;
|
|
if (format == TextureFormat.BC1)
|
|
{
|
|
blockSize = 8;
|
|
}
|
|
width = System.Math.Max(width, 1);
|
|
height = System.Math.Max(height, 1);
|
|
return (
|
|
((width + 3) / 4) *
|
|
((height + 3) / 4) *
|
|
blockSize
|
|
);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Asynchronously saves RGBA or BGRA pixel data to a file in PNG format. <br/>
|
|
/// Warning: this is expensive and will block to wait for data download from GPU! <br/>
|
|
/// You can avoid blocking by calling this method from a thread.
|
|
/// </summary>
|
|
public unsafe void SavePNG(string path)
|
|
{
|
|
#if DEBUG
|
|
if (Format != TextureFormat.R8G8B8A8 && Format != TextureFormat.B8G8R8A8)
|
|
{
|
|
throw new ArgumentException("Texture format must be RGBA or BGRA!", "format");
|
|
}
|
|
#endif
|
|
|
|
var buffer = new Buffer(Device, 0, Width * Height * 4); // this creates garbage... oh well
|
|
|
|
// immediately request the data copy
|
|
var commandBuffer = Device.AcquireCommandBuffer();
|
|
commandBuffer.CopyTextureToBuffer(this, buffer);
|
|
var fence = Device.SubmitAndAcquireFence(commandBuffer);
|
|
|
|
var byteCount = buffer.Size;
|
|
|
|
var pixelsPtr = NativeMemory.Alloc((nuint) byteCount);
|
|
var pixelsSpan = new Span<byte>(pixelsPtr, (int) byteCount);
|
|
|
|
Device.WaitForFences(fence); // make sure the data transfer is done...
|
|
Device.ReleaseFence(fence); // and then release the fence
|
|
|
|
buffer.GetData(pixelsSpan);
|
|
|
|
if (Format == TextureFormat.B8G8R8A8)
|
|
{
|
|
var rgbaPtr = NativeMemory.Alloc((nuint) byteCount);
|
|
var rgbaSpan = new Span<byte>(rgbaPtr, (int) byteCount);
|
|
|
|
for (var i = 0; i < byteCount; i += 4)
|
|
{
|
|
rgbaSpan[i] = pixelsSpan[i + 2];
|
|
rgbaSpan[i + 1] = pixelsSpan[i + 1];
|
|
rgbaSpan[i + 2] = pixelsSpan[i];
|
|
rgbaSpan[i + 3] = pixelsSpan[i + 3];
|
|
}
|
|
|
|
Refresh.Refresh_Image_SavePNG(path, (nint) rgbaPtr, (int) Width, (int) Height);
|
|
|
|
NativeMemory.Free((void*) rgbaPtr);
|
|
}
|
|
else
|
|
{
|
|
fixed (byte* ptr = pixelsSpan)
|
|
{
|
|
Refresh.Refresh_Image_SavePNG(path, (nint) ptr, (int) Width, (int) Height);
|
|
}
|
|
}
|
|
|
|
NativeMemory.Free(pixelsPtr);
|
|
}
|
|
}
|
|
}
|