public static GLTextureCube FromDDS(DDS dds, DDS mipLevel2)
{
var surfaces = dds.GetSurfaces(0, false, 6);
var surfacesMip = mipLevel2.GetSurfaces(0, false, 6);
int size = (int)dds.Width;
GLTextureCube texture = new GLTextureCube();
texture.Width = size; texture.Height = size;
texture.Bind();
InternalFormat format = InternalFormat.CompressedRgbaS3tcDxt5Ext;
if (dds.Platform.OutputFormat == TexFormat.BC6H_UF16)
{
format = InternalFormat.CompressedRgbBptcUnsignedFloat;
}
if (dds.Platform.OutputFormat == TexFormat.BC6H_SF16)
{
format = InternalFormat.CompressedRgbBptcSignedFloat;
}
for (int i = 0; i < 6; i++)
{
for (int j = 0; j < dds.MipCount; j++)
{
int mipWidth = CalculateMipDimension(texture.Width, j);
int mipHeight = CalculateMipDimension(texture.Height, j);
int imageSize = GLFormatHelper.CalculateImageSize(mipWidth, mipHeight, format);
if (j == 0)
{
GL.CompressedTexImage2D(TextureTarget.TextureCubeMapPositiveX + i, j,
format,
mipWidth, mipHeight,
0, imageSize, surfaces[i].mipmaps[0]);
}
else if (j == 1)
{
GL.CompressedTexImage2D(TextureTarget.TextureCubeMapPositiveX + i, j,
format,
mipWidth, mipHeight,
0, imageSize, surfacesMip[i].mipmaps[0]);
}
else
{
GL.CompressedTexImage2D(TextureTarget.TextureCubeMapPositiveX + i, j,
format,
mipWidth, mipHeight,
0, imageSize, IntPtr.Zero);
}
}
}
texture.Unbind();
return(texture);
}
public static GLTextureCube CreateEmptyCubemap(int size,
PixelInternalFormat pixelInternalFormat = PixelInternalFormat.Rgba8,
PixelFormat pixelFormat = PixelFormat.Rgba,
PixelType pixelType = PixelType.UnsignedByte, int numMips = 1)
{
GLTextureCube texture = new GLTextureCube();
texture.PixelFormat = pixelFormat;
texture.PixelType = pixelType;
texture.Width = size; texture.Height = size;
texture.Target = TextureTarget.TextureCubeMap;
texture.Bind();
texture.WrapR = TextureWrapMode.ClampToEdge;
texture.WrapS = TextureWrapMode.ClampToEdge;
texture.WrapT = TextureWrapMode.ClampToEdge;
texture.MinFilter = TextureMinFilter.LinearMipmapLinear;
texture.MagFilter = TextureMagFilter.Linear;
texture.MipCount = numMips;
//Allocate mip data
if (texture.MipCount > 1)
{
texture.GenerateMipmaps();
}
for (int i = 0; i < 6; i++)
{
for (int j = 0; j < texture.MipCount; j++)
{
var width = CalculateMipDimension(texture.Width, j);
var height = CalculateMipDimension(texture.Height, j);
GL.TexImage2D(TextureTarget.TextureCubeMapPositiveX + i, j, pixelInternalFormat,
width, height,
0, pixelFormat, pixelType, IntPtr.Zero);
}
}
texture.UpdateParameters();
texture.Unbind();
return(texture);
}
public static GLTextureCube FromDDS(DDS dds, bool flipY = false, bool isBGRA = false)
{
int size = (int)dds.Width;
GLTextureCube texture = new GLTextureCube();
texture.Width = size; texture.Height = size;
texture.Bind();
InternalFormat format = InternalFormat.CompressedRgbaS3tcDxt5Ext;
if (dds.Platform.OutputFormat == TexFormat.BC6H_UF16)
{
format = InternalFormat.CompressedRgbBptcUnsignedFloat;
}
if (dds.Platform.OutputFormat == TexFormat.BC6H_SF16)
{
format = InternalFormat.CompressedRgbBptcSignedFloat;
}
if (dds.Platform.OutputFormat == TexFormat.RGBA8_UNORM)
{
format = InternalFormat.Rgba8;
}
for (int i = 0; i < 6; i++)
{
for (int j = 0; j < dds.MipCount; j++)
{
int mipWidth = CalculateMipDimension(texture.Width, j);
int mipHeight = CalculateMipDimension(texture.Height, j);
int imageSize = GLFormatHelper.CalculateImageSize(mipWidth, mipHeight, format);
var surface = dds.GetDeswizzledSurface(i, j);
if (dds.Parameters.UseSoftwareDecoder || flipY)
{
surface = dds.GetDecodedSurface(i, j);
format = InternalFormat.Rgba8;
}
if (flipY)
{
surface = FlipVertical(mipWidth, mipHeight, surface);
}
if (format == InternalFormat.Rgba8)
{
GL.TexImage2D(TextureTarget.TextureCubeMapPositiveX + i, j,
PixelInternalFormat.Rgba,
mipWidth, mipHeight, 0, PixelFormat.Rgba, PixelType.UnsignedByte,
surface);
}
else
{
GL.CompressedTexImage2D(TextureTarget.TextureCubeMapPositiveX + i, j,
format,
mipWidth, mipHeight,
0, imageSize, surface);
}
}
}
texture.Unbind();
return(texture);
}
