diff --git a/lib/RefreshCS b/lib/RefreshCS
index 610698f..98c590a 160000
--- a/lib/RefreshCS
+++ b/lib/RefreshCS
@@ -1 +1 @@
-Subproject commit 610698fcd63f4c135fc0f60f38ccc8707ce568eb
+Subproject commit 98c590ae77c3b6a64a370bac439f20728959a8b6
diff --git a/src/Graphics/RefreshEnums.cs b/src/Graphics/RefreshEnums.cs
index 03fd4bc..12d70c8 100644
--- a/src/Graphics/RefreshEnums.cs
+++ b/src/Graphics/RefreshEnums.cs
@@ -67,6 +67,7 @@ namespace MoonWorks.Graphics
BC1,
BC2,
BC3,
+ BC7,
R8G8_SNORM,
R8G8B8A8_SNORM,
A2R10G10B10,
diff --git a/src/Graphics/Resources/Texture.cs b/src/Graphics/Resources/Texture.cs
index e604a78..86d5f07 100644
--- a/src/Graphics/Resources/Texture.cs
+++ b/src/Graphics/Resources/Texture.cs
@@ -1,4 +1,5 @@
using System;
+using System.IO;
using RefreshCS;
namespace MoonWorks.Graphics
@@ -56,6 +57,9 @@ namespace MoonWorks.Graphics
return texture;
}
+ ///
+ /// Saves RGBA or BGRA pixel data to a file in PNG format.
+ ///
public unsafe static void SavePNG(string path, int width, int height, TextureFormat format, byte[] pixels)
{
if (format != TextureFormat.R8G8B8A8 && format != TextureFormat.B8G8R8A8)
@@ -69,6 +73,34 @@ namespace MoonWorks.Graphics
}
}
+ public static Texture LoadDDS(GraphicsDevice graphicsDevice, CommandBuffer commandBuffer, System.IO.Stream stream)
+ {
+ using (var reader = new BinaryReader(stream))
+ {
+ ParseDDS(reader, out var format, out var width, out var height, out var levels);
+ Texture texture = CreateTexture2D(graphicsDevice, (uint) width, (uint) height, format, TextureUsageFlags.Sampler, SampleCount.One, (uint) levels);
+
+ for (int i = 0; i < levels; i += 1)
+ {
+ var levelWidth = width >> i;
+ var levelHeight = height >> i;
+
+ var pixels = reader.ReadBytes(
+ Texture.CalculateDDSLevelSize(
+ levelWidth,
+ levelHeight,
+ format
+ )
+ );
+
+ var textureSlice = new TextureSlice(texture, new Rect(0, 0, levelWidth, levelHeight), 0, 0, (uint) i);
+ commandBuffer.SetTextureData(textureSlice, pixels);
+ }
+
+ return texture;
+ }
+ }
+
///
/// Creates a 2D texture.
///
@@ -222,5 +254,202 @@ namespace MoonWorks.Graphics
LevelCount = 1;
UsageFlags = TextureUsageFlags.ColorTarget;
}
+
+ // DDS loading extension, based on MojoDDS
+ // Taken from https://github.com/FNA-XNA/FNA/blob/1e49f868f595f62bc6385db45949a03186a7cd7f/src/Graphics/Texture.cs#L194
+ private static void ParseDDS(
+ BinaryReader reader,
+ out TextureFormat format,
+ out int width,
+ out int height,
+ out int levels
+ ) {
+ // A whole bunch of magic numbers, yay DDS!
+ const uint DDS_MAGIC = 0x20534444;
+ const uint DDS_HEADERSIZE = 124;
+ const uint DDS_PIXFMTSIZE = 32;
+ const uint DDSD_CAPS = 0x1;
+ const uint DDSD_HEIGHT = 0x2;
+ const uint DDSD_WIDTH = 0x4;
+ const uint DDSD_PITCH = 0x8;
+ const uint DDSD_FMT = 0x1000;
+ const uint DDSD_LINEARSIZE = 0x80000;
+ const uint DDSD_REQ = (
+ DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_FMT
+ );
+ const uint DDSCAPS_MIPMAP = 0x400000;
+ const uint DDSCAPS_TEXTURE = 0x1000;
+ const uint DDSCAPS2_CUBEMAP = 0x200;
+ const uint DDPF_FOURCC = 0x4;
+ const uint DDPF_RGB = 0x40;
+ const uint FOURCC_DXT1 = 0x31545844;
+ const uint FOURCC_DXT3 = 0x33545844;
+ const uint FOURCC_DXT5 = 0x35545844;
+ const uint FOURCC_BPTC = 0x30315844;
+ // const uint FOURCC_DX10 = 0x30315844;
+ const uint pitchAndLinear = (
+ DDSD_PITCH | DDSD_LINEARSIZE
+ );
+
+ // File should start with 'DDS '
+ if (reader.ReadUInt32() != DDS_MAGIC)
+ {
+ throw new NotSupportedException("Not a DDS!");
+ }
+
+ // Texture info
+ uint size = reader.ReadUInt32();
+ if (size != DDS_HEADERSIZE)
+ {
+ throw new NotSupportedException("Invalid DDS header!");
+ }
+ uint flags = reader.ReadUInt32();
+ if ((flags & DDSD_REQ) != DDSD_REQ)
+ {
+ throw new NotSupportedException("Invalid DDS flags!");
+ }
+ if ((flags & pitchAndLinear) == pitchAndLinear)
+ {
+ throw new NotSupportedException("Invalid DDS flags!");
+ }
+ height = reader.ReadInt32();
+ width = reader.ReadInt32();
+ reader.ReadUInt32(); // dwPitchOrLinearSize, unused
+ reader.ReadUInt32(); // dwDepth, unused
+ levels = reader.ReadInt32();
+
+ // "Reserved"
+ reader.ReadBytes(4 * 11);
+
+ // Format info
+ uint formatSize = reader.ReadUInt32();
+ if (formatSize != DDS_PIXFMTSIZE)
+ {
+ throw new NotSupportedException("Bogus PIXFMTSIZE!");
+ }
+ uint formatFlags = reader.ReadUInt32();
+ uint formatFourCC = reader.ReadUInt32();
+ uint formatRGBBitCount = reader.ReadUInt32();
+ uint formatRBitMask = reader.ReadUInt32();
+ uint formatGBitMask = reader.ReadUInt32();
+ uint formatBBitMask = reader.ReadUInt32();
+ uint formatABitMask = reader.ReadUInt32();
+
+ // dwCaps "stuff"
+ uint caps = reader.ReadUInt32();
+ if ((caps & DDSCAPS_TEXTURE) == 0)
+ {
+ throw new NotSupportedException("Not a texture!");
+ }
+ uint caps2 = reader.ReadUInt32();
+ if ( caps2 != 0 &&
+ (caps2 & DDSCAPS2_CUBEMAP) != DDSCAPS2_CUBEMAP )
+ {
+ throw new NotSupportedException("Invalid caps2!");
+ }
+ reader.ReadUInt32(); // dwCaps3, unused
+ reader.ReadUInt32(); // dwCaps4, unused
+
+ // "Reserved"
+ reader.ReadUInt32();
+
+ // Mipmap sanity check
+ if ((caps & DDSCAPS_MIPMAP) != DDSCAPS_MIPMAP)
+ {
+ levels = 1;
+ }
+
+ // Determine texture format
+ if ((formatFlags & DDPF_FOURCC) == DDPF_FOURCC)
+ {
+ switch (formatFourCC)
+ {
+ case 0x71:
+ format = TextureFormat.R16G16B16A16_SFLOAT;
+ break;
+ case 0x74:
+ format = TextureFormat.R32G32B32A32_SFLOAT;
+ break;
+ case FOURCC_DXT1:
+ format = TextureFormat.BC1;
+ break;
+ case FOURCC_DXT3:
+ format = TextureFormat.BC2;
+ break;
+ case FOURCC_DXT5:
+ format = TextureFormat.BC3;
+ break;
+ case FOURCC_BPTC:
+ format = TextureFormat.BC7;
+ // These next 5 uints are part of the DX10 DDS header.
+ // They contain a little extra information but aren't that important.
+ uint dxgiFormat = reader.ReadUInt32();
+ uint resourceDimension = reader.ReadUInt32();
+ uint miscFlag = reader.ReadUInt32();
+ uint arraySize = reader.ReadUInt32();
+ reader.ReadUInt32(); // reserved
+ break;
+ default:
+ throw new NotSupportedException(
+ "Unsupported DDS texture format"
+ );
+ }
+ }
+ else if ((formatFlags & DDPF_RGB) == DDPF_RGB)
+ {
+ if ( formatRGBBitCount != 32 ||
+ formatRBitMask != 0x00FF0000 ||
+ formatGBitMask != 0x0000FF00 ||
+ formatBBitMask != 0x000000FF ||
+ formatABitMask != 0xFF000000 )
+ {
+ throw new NotSupportedException(
+ "Unsupported DDS texture format"
+ );
+ }
+
+ format = TextureFormat.B8G8R8A8;
+ }
+ else
+ {
+ throw new NotSupportedException(
+ "Unsupported DDS texture format"
+ );
+ }
+ }
+
+ private static int CalculateDDSLevelSize(
+ int width,
+ int height,
+ TextureFormat format
+ ) {
+ 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
+ );
+ }
+ }
}
}