diff options
Diffstat (limited to 'src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c')
-rw-r--r-- | src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c b/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c index cd843d965e..117d695ce7 100644 --- a/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c +++ b/src/mesa/drivers/dri/radeon/radeon_mipmap_tree.c @@ -81,6 +81,32 @@ static unsigned get_compressed_image_size( return rowStride * ((height + blockHeight - 1) / blockHeight); } +static unsigned is_pot(unsigned value) +{ + unsigned m; + + for (m = 1; m < value; m *= 2) {} + + return value == m; +} + +unsigned get_texture_image_row_stride(radeonContextPtr rmesa, gl_format format, unsigned width) +{ + if (_mesa_is_format_compressed(format)) { + return get_aligned_compressed_row_stride(format, width, rmesa->texture_compressed_row_align); + } else { + unsigned row_align; + + if (is_pot(width)) { + row_align = rmesa->texture_row_align - 1; + } else { + row_align = rmesa->texture_rect_row_align - 1; + } + + return (_mesa_format_row_stride(format, width) + row_align) & ~row_align; + } +} + /** * Compute sizes and fill in offset and blit information for the given * image (determined by \p face and \p level). |