public void Create(long key, byte[] data, GalImage image)
{
int handle = GL.GenTexture();
TextureTarget target = ImageUtils.GetTextureTarget(image.TextureTarget);
GL.BindTexture(target, handle);
const int level = 0; //TODO: Support mipmap textures.
const int border = 0;
_textureCache.AddOrUpdate(key, new ImageHandler(handle, image), (uint)data.Length);
if (ImageUtils.IsCompressed(image.Format) && !IsAstc(image.Format))
{
InternalFormat internalFmt = OglEnumConverter.GetCompressedImageFormat(image.Format);
switch (target)
{
case TextureTarget.Texture1D:
GL.CompressedTexImage1D(
target,
level,
internalFmt,
image.Width,
border,
data.Length,
data);
break;
case TextureTarget.Texture2D:
GL.CompressedTexImage2D(
target,
level,
internalFmt,
image.Width,
image.Height,
border,
data.Length,
data);
break;
case TextureTarget.Texture3D:
GL.CompressedTexImage3D(
target,
level,
internalFmt,
image.Width,
image.Height,
image.Depth,
border,
data.Length,
data);
break;
// Cube map arrays are just 2D texture arrays with 6 entries
// per cube map so we can handle them in the same way
case TextureTarget.TextureCubeMapArray:
case TextureTarget.Texture2DArray:
GL.CompressedTexImage3D(
target,
level,
internalFmt,
image.Width,
image.Height,
image.LayerCount,
border,
data.Length,
data);
break;
case TextureTarget.TextureCubeMap:
Span <byte> array = new Span <byte>(data);
int faceSize = ImageUtils.GetSize(image) / 6;
for (int Face = 0; Face < 6; Face++)
{
GL.CompressedTexImage2D(
TextureTarget.TextureCubeMapPositiveX + Face,
level,
internalFmt,
image.Width,
image.Height,
border,
faceSize,
array.Slice(Face * faceSize, faceSize).ToArray());
}
break;
default:
throw new NotImplementedException($"Unsupported texture target type: {target}");
}
}
else
{
//TODO: Use KHR_texture_compression_astc_hdr when available
if (IsAstc(image.Format))
{
int textureBlockWidth = ImageUtils.GetBlockWidth(image.Format);
int textureBlockHeight = ImageUtils.GetBlockHeight(image.Format);
int textureBlockDepth = ImageUtils.GetBlockDepth(image.Format);
data = AstcDecoder.DecodeToRgba8888(
data,
textureBlockWidth,
textureBlockHeight,
textureBlockDepth,
image.Width,
image.Height,
image.Depth);
image.Format = GalImageFormat.Rgba8 | (image.Format & GalImageFormat.TypeMask);
}
(PixelInternalFormat internalFmt,
PixelFormat format,
PixelType type) = OglEnumConverter.GetImageFormat(image.Format);
switch (target)
{
case TextureTarget.Texture1D:
GL.TexImage1D(
target,
level,
internalFmt,
image.Width,
border,
format,
type,
data);
break;
case TextureTarget.Texture2D:
GL.TexImage2D(
target,
level,
internalFmt,
image.Width,
image.Height,
border,
format,
type,
data);
break;
case TextureTarget.Texture3D:
GL.TexImage3D(
target,
level,
internalFmt,
image.Width,
image.Height,
image.Depth,
border,
format,
type,
data);
break;
// Cube map arrays are just 2D texture arrays with 6 entries
// per cube map so we can handle them in the same way
case TextureTarget.TextureCubeMapArray:
case TextureTarget.Texture2DArray:
GL.TexImage3D(
target,
level,
internalFmt,
image.Width,
image.Height,
image.LayerCount,
border,
format,
type,
data);
break;
case TextureTarget.TextureCubeMap:
Span <byte> array = new Span <byte>(data);
int faceSize = ImageUtils.GetSize(image) / 6;
for (int face = 0; face < 6; face++)
{
GL.TexImage2D(
TextureTarget.TextureCubeMapPositiveX + face,
level,
internalFmt,
image.Width,
image.Height,
border,
format,
type,
array.Slice(face * faceSize, faceSize).ToArray());
}
break;
default:
throw new NotImplementedException($"Unsupported texture target type: {target}");
}
}
}
