// public void DestroyImage (MgImage image, IMgAllocationCallbacks allocator)
// {
// mImages [image.Key].Destroy ();
// }
public void GetImageSubresourceLayout(IMgImage image, MgImageSubresource pSubresource, out MgSubresourceLayout pLayout)
{
var internalImage = (IGLImage)image;
if (internalImage != null &&
pSubresource.ArrayLayer < internalImage.ArrayLayers.Length &&
pSubresource.MipLevel < internalImage.ArrayLayers[pSubresource.ArrayLayer].Levels.Length)
{
pLayout = internalImage.ArrayLayers [pSubresource.ArrayLayer].Levels [pSubresource.MipLevel].SubresourceLayout;
}
else
{
pLayout = new MgSubresourceLayout {
};
}
}
public void GetImageSubresourceLayout(IMgImage image, MgImageSubresource pSubresource, out MgSubresourceLayout pLayout)
{
throw new NotImplementedException();
}
private void GenerateMipmapLevels()
{
ulong imageSize = 0;
ulong offset = 0;
uint width = (uint)mWidth;
uint height = (uint)mHeight;
uint depth = (uint)mDepth;
//
uint pixelSize = GetSize(mFormat);
mArraySubresources = new GLImageArraySubresource[mLayers];
for (uint index = 0; index < mLayers; ++index)
{
var arrayItem = new GLImageArraySubresource(index, new GLImageLevelSubresource[mLevels]);
for (uint level = 0; level < mLevels; ++level)
{
switch (mFormat)
{
// FIXME :
// //case SurfaceFormat.RgbPvrtc2Bpp:
// case SurfaceFormat.RgbaPvrtc2Bpp:
// imageSize = (Math.Max(this.width, 16) * Math.Max(this.height, 8) * 2 + 7) / 8;
// break;
// case SurfaceFormat.RgbPvrtc4Bpp:
// case SurfaceFormat.RgbaPvrtc4Bpp:
// imageSize = (Math.Max(this.width, 8) * Math.Max(this.height, 8) * 4 + 7) / 8;
// break;
case MgFormat.BC1_RGB_UNORM_BLOCK:
//case SurfaceFormat.Dxt1:
case MgFormat.BC1_RGBA_UNORM_BLOCK:
//case SurfaceFormat.Dxt1a:
case MgFormat.BC1_RGB_SRGB_BLOCK:
//case SurfaceFormat.Dxt1SRgb:
case MgFormat.BC2_UNORM_BLOCK:
//case SurfaceFormat.Dxt3:
case MgFormat.BC2_SRGB_BLOCK:
//case SurfaceFormat.Dxt3SRgb:
case MgFormat.BC3_UNORM_BLOCK:
//case SurfaceFormat.Dxt5:
case MgFormat.BC3_SRGB_BLOCK:
//case SurfaceFormat.Dxt5SRgb:
//case SurfaceFormat.RgbEtc1:
//case SurfaceFormat.RgbaAtcExplicitAlpha:
//case SurfaceFormat.RgbaAtcInterpolatedAlpha:
// TODO : include depth SOMEHOW
imageSize = ((width + 3) / 4) * ((height + 3) / 4) * pixelSize;
break;
default:
imageSize = pixelSize * width * height * depth;
break;
//return Result.ERROR_FEATURE_NOT_PRESENT;
}
var current = new MgSubresourceLayout {
Offset = offset,
Size = imageSize,
ArrayPitch = RoundPixelUp(imageSize),
RowPitch = (mImageType == MgImageType.TYPE_1D) ? 0U : RoundPixelUp(width),
DepthPitch = (mImageType == MgImageType.TYPE_1D || mImageType == MgImageType.TYPE_2D) ? 0U : RoundPixelUp(depth),
};
var mipLevelData = new GLImageLevelSubresource();
mipLevelData.Width = (int)width;
mipLevelData.Height = (int)height;
mipLevelData.Depth = (int)depth;
mipLevelData.SubresourceLayout = current;
arrayItem.Levels [level] = mipLevelData;
// for next array item
offset += current.ArrayPitch;
if (width > 1)
{
width /= 2;
}
if (height > 1)
{
height /= 2;
}
if (depth > 1)
{
depth /= 2;
}
}
mArraySubresources [index] = arrayItem;
}
}
