public static GLTextureCubeArray FromGeneric(STGenericTexture texture, ImageParameters parameters)
{
GLTextureCubeArray glTexture = new GLTextureCubeArray();
glTexture.Target = TextureTarget.Texture2D;
glTexture.Width = (int)texture.Width;
glTexture.Height = (int)texture.Height;
glTexture.LoadImage(texture, parameters);
return(glTexture);
}
public static GLTextureCubeArray FromDDS(DDS dds)
{
int size = (int)dds.Width;
GLTextureCubeArray texture = new GLTextureCubeArray();
texture.Width = size;
texture.Height = size;
texture.Bind();
var format = dds.Platform.OutputFormat;
var surfaces = dds.GetSurfaces();
List <byte[]> cubemapSurfaces = new List <byte[]>();
for (int a = 0; a < surfaces.Count; a++)
{
cubemapSurfaces.Add(surfaces[a].mipmaps[0]);
}
int depth = surfaces.Count;
Console.WriteLine($"depth {depth}");
byte[] buffer = ByteUtils.CombineArray(cubemapSurfaces.ToArray());
for (int j = 0; j < dds.MipCount; j++)
{
int mipWidth = CalculateMipDimension(texture.Width, j);
int mipHeight = CalculateMipDimension(texture.Height, j);
if (dds.IsBCNCompressed())
{
var internalFormat = GLFormatHelper.ConvertCompressedFormat(format, true);
GLTextureDataLoader.LoadCompressedImage(texture.Target, mipWidth, mipHeight, depth, internalFormat, buffer, j);
}
else
{
var formatInfo = GLFormatHelper.ConvertPixelFormat(format);
if (dds.Platform.OutputFormat == TexFormat.RGBA8_UNORM)
{
formatInfo.Format = PixelFormat.Rgba;
}
GLTextureDataLoader.LoadImage(texture.Target, mipWidth, mipHeight, depth, formatInfo, buffer, j);
}
}
GL.TexParameter(texture.Target, TextureParameterName.TextureBaseLevel, 0);
GL.TexParameter(texture.Target, TextureParameterName.TextureMaxLevel, 13);
GL.GenerateMipmap(GenerateMipmapTarget.TextureCubeMapArray);
texture.Unbind();
return(texture);
}
public static GLTextureCubeArray CreateEmptyCubemap(int size, int arrayCount, int mipCount,
PixelInternalFormat pixelInternalFormat = PixelInternalFormat.Rgba8,
PixelFormat pixelFormat = PixelFormat.Rgba,
PixelType pixelType = PixelType.UnsignedByte)
{
GLTextureCubeArray texture = new GLTextureCubeArray();
texture.PixelFormat = pixelFormat;
texture.PixelType = pixelType;
texture.PixelInternalFormat = pixelInternalFormat;
texture.Width = size; texture.Height = size;
texture.Target = TextureTarget.TextureCubeMapArray;
texture.MinFilter = TextureMinFilter.LinearMipmapLinear;
texture.MagFilter = TextureMagFilter.Linear;
texture.MipCount = mipCount;
texture.ArrayCount = arrayCount;
texture.Bind();
//Allocate mip data
if (texture.MipCount > 1)
{
texture.GenerateMipmaps();
}
for (int mip = 0; mip < texture.MipCount; mip++)
{
int mipWidth = (int)(texture.Width * Math.Pow(0.5, mip));
int mipHeight = (int)(texture.Height * Math.Pow(0.5, mip));
GL.TexImage3D(texture.Target, 0, texture.PixelInternalFormat,
mipWidth, mipHeight, texture.ArrayCount * 6, mip,
texture.PixelFormat, texture.PixelType, IntPtr.Zero);
}
texture.UpdateParameters();
texture.Unbind();
return(texture);
}
