diff options
| -rw-r--r-- | src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c b/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c index 90a4e4f00a..836b042ca4 100644 --- a/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c +++ b/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c @@ -41,18 +41,24 @@ static unsigned get_aligned_compressed_row_stride( unsigned width, unsigned minStride) { - const unsigned blockSize = _mesa_get_format_bytes(format); - unsigned blockWidth, blockHeight, numXBlocks; + const unsigned blockBytes = _mesa_get_format_bytes(format); + unsigned blockWidth, blockHeight; + unsigned stride; _mesa_get_format_block_size(format, &blockWidth, &blockHeight); - numXBlocks = (width + blockWidth - 1) / blockWidth; - while (numXBlocks * blockSize < minStride) - { - ++numXBlocks; - } + /* Count number of blocks required to store the given width. + * And then multiple it with bytes required to store a block. + */ + stride = (width + blockWidth - 1) / blockWidth * blockBytes; + + /* Round the given minimum stride to the next full blocksize. + * (minStride + blockBytes - 1) / blockBytes * blockBytes + */ + if ( stride < minStride ) + stride = (minStride + blockBytes - 1) / blockBytes * blockBytes; - return numXBlocks * blockSize; + return stride; } static unsigned get_compressed_image_size( |