[SharpDX] Loading texture from file

All these texture classes (Direct3D9.Texture, Direct3D11.Texture{1,2,3}D, etc) also have FromFile() static methods that you can use, along with FromMemory() and FromStream(). For instance http://sharpdx.org/documentation/api/m-sharpdx-direct3d11-resource-fromfile--1-1. Have you tried these?

Actually they are not there right now.

From***() is only valid for ShaderResourceView and not more.

BTW, documentation is quite old and it is for version 2.4.2. Current version - 3.0.

I'm using this code to load images to Textures and Bitmaps:

using SharpDX;
using SharpDX.Direct2D1;
using SharpDX.Direct3D11;
using SharpDX.DXGI;
using SharpDX.WIC;
using Device = SharpDX.Direct3D11.Device;
using DeviceContext = SharpDX.Direct2D1.DeviceContext;
using PixelFormat = SharpDX.WIC.PixelFormat;

namespace Content.Textures
{
    public static class TextureLoader
    {
        private static readonly ImagingFactory Imgfactory = new ImagingFactory();

        public static Bitmap1 LoadBitmap(string filename, DeviceContext context)
        {
            var props = new BitmapProperties1
            {
                PixelFormat =
                    new SharpDX.Direct2D1.PixelFormat(Format.R8G8B8A8_UNorm, SharpDX.Direct2D1.AlphaMode.Premultiplied)
            };

            return Bitmap1.FromWicBitmap(context, LoadBitmap(filename), props);
        }

        private static BitmapSource LoadBitmap(string filename)
        {
            var d = new BitmapDecoder(
                Imgfactory,
                filename,
                DecodeOptions.CacheOnDemand
                );

            var frame = d.GetFrame(0);

            var fconv = new FormatConverter(Imgfactory);

            fconv.Initialize(
                frame,
                PixelFormat.Format32bppPRGBA,
                BitmapDitherType.None, null,
                0.0, BitmapPaletteType.Custom);
            return fconv;
        }

        public static Texture2D CreateTex2DFromFile(Device device, string filename)
        {
            var bSource = LoadBitmap(filename);
            return CreateTex2DFromBitmap(device, bSource);
        }

        public static Texture2D CreateTex2DFromBitmap(Device device, BitmapSource bsource)
        {

            Texture2DDescription desc;
            desc.Width = bsource.Size.Width;
            desc.Height = bsource.Size.Height;
            desc.ArraySize = 1;
            desc.BindFlags = BindFlags.ShaderResource;
            desc.Usage = ResourceUsage.Default;
            desc.CpuAccessFlags = CpuAccessFlags.None;
            desc.Format = Format.R8G8B8A8_UNorm;
            desc.MipLevels = 1;
            desc.OptionFlags = ResourceOptionFlags.None;
            desc.SampleDescription.Count = 1;
            desc.SampleDescription.Quality = 0;

            var s = new DataStream(bsource.Size.Height*bsource.Size.Width*4, true, true);
            bsource.CopyPixels(bsource.Size.Width*4, s);

            var rect = new DataRectangle(s.DataPointer, bsource.Size.Width*4);

            var t2D = new Texture2D(device, desc, rect);

            return t2D;
        }
    }
}

Lordadmiral Drake

Interesting solution. Will it correctly load texture cube also? (array of 6 textures in one file)

Did you try that?

And could you explain what means "4" here?

bsource.Size.Width*4

I don't know about cube textures since I haven't used any so far. I assume you'd need to modify the loader to process those too.

bsource.Size.Width*4 

is the size of one pixel line in bytes

Quoting from SharpDX documentation (BitmapSource.CopyPixels):

The cbStride parameter defines the count of bytes between two vertically adjacent pixels in the output buffer

I don't know about cube textures since I haven't used any so far. I assume you'd need to modify the loader to process those too.

You mean instead of

var frame = d.GetFrame(0);

I need to get number of frames and load all of them?

And the dame question regarding texture1d and 3d. Did you try to load at least any of them?

No I didn't, since so far I only needed Texture2Ds

I was hopeful someone might work on some kind of tools for version 3+ (or a depot where ppl could put useful code)

(Right now, I'm using 2.6.3 toolkit package for my one project)

I suppose depending on one's needs, one could use the Paradox engine too and build from that - seems like it's kinda taken over as the toolkit.

I noticed it has stuff like Asset.Load or like Texture[type].New( //creation params... )

I see I'm not the only one having problems with this. I have been modifying one of my projects to use SharpDX 3.0.0 instead of 2.6.whatever, and it has mostly been problem-free - apart from the texture loading....and the code snippet by LordArmiral Drake above looks like a solution to my problems. Thanks.

This code works at least for jpg, png, tga and dds.

Glad I could help. Though I didn't write this code mostly. You can find part of it in the SharpDX samples, though I found it on some other site. It was some work to get rid of the toolkit. But i managed to kick it out of my code