Exemple #1
0
        public void CopyUnscaled(
            ITextureInfo src,
            ITextureInfo dst,
            int srcLayer,
            int dstLayer,
            int srcLevel,
            int dstLevel)
        {
            TextureCreateInfo srcInfo = src.Info;
            TextureCreateInfo dstInfo = dst.Info;

            int srcDepth  = srcInfo.GetDepthOrLayers();
            int srcLevels = srcInfo.Levels;

            int dstDepth  = dstInfo.GetDepthOrLayers();
            int dstLevels = dstInfo.Levels;

            if (dstInfo.Target == Target.Texture3D)
            {
                dstDepth = Math.Max(1, dstDepth >> dstLevel);
            }

            int depth  = Math.Min(srcDepth, dstDepth);
            int levels = Math.Min(srcLevels, dstLevels);

            CopyUnscaled(src, dst, srcLayer, dstLayer, srcLevel, dstLevel, depth, levels);
        }
Exemple #2
0
        public void CopyUnscaled(
            ITextureInfo src,
            ITextureInfo dst,
            int srcLayer,
            int dstLayer,
            int srcLevel,
            int dstLevel,
            int depth,
            int levels)
        {
            TextureCreateInfo srcInfo = src.Info;
            TextureCreateInfo dstInfo = dst.Info;

            int srcHandle = src.Handle;
            int dstHandle = dst.Handle;

            int srcWidth  = srcInfo.Width;
            int srcHeight = srcInfo.Height;

            int dstWidth  = dstInfo.Width;
            int dstHeight = dstInfo.Height;

            srcWidth  = Math.Max(1, srcWidth >> srcLevel);
            srcHeight = Math.Max(1, srcHeight >> srcLevel);

            dstWidth  = Math.Max(1, dstWidth >> dstLevel);
            dstHeight = Math.Max(1, dstHeight >> dstLevel);

            int  blockWidth   = 1;
            int  blockHeight  = 1;
            bool sizeInBlocks = false;

            // When copying from a compressed to a non-compressed format,
            // the non-compressed texture will have the size of the texture
            // in blocks (not in texels), so we must adjust that size to
            // match the size in texels of the compressed texture.
            if (!srcInfo.IsCompressed && dstInfo.IsCompressed)
            {
                srcWidth   *= dstInfo.BlockWidth;
                srcHeight  *= dstInfo.BlockHeight;
                blockWidth  = dstInfo.BlockWidth;
                blockHeight = dstInfo.BlockHeight;

                sizeInBlocks = true;
            }
            else if (srcInfo.IsCompressed && !dstInfo.IsCompressed)
            {
                dstWidth   *= srcInfo.BlockWidth;
                dstHeight  *= srcInfo.BlockHeight;
                blockWidth  = srcInfo.BlockWidth;
                blockHeight = srcInfo.BlockHeight;
            }

            int width  = Math.Min(srcWidth, dstWidth);
            int height = Math.Min(srcHeight, dstHeight);

            for (int level = 0; level < levels; level++)
            {
                // Stop copy if we are already out of the levels range.
                if (level >= srcInfo.Levels || dstLevel + level >= dstInfo.Levels)
                {
                    break;
                }

                if ((width % blockWidth != 0 || height % blockHeight != 0) && src is TextureView srcView && dst is TextureView dstView)
                {
                    PboCopy(srcView, dstView, srcLayer, dstLayer, srcLevel + level, dstLevel + level, width, height);
                }