Module: wine Branch: master Commit: 97558b65502935cbd0cbd8492f473b9c87cf3720 URL: https://source.winehq.org/git/wine.git/?a=commit;h=97558b65502935cbd0cbd8492...
Author: Henri Verbeet hverbeet@codeweavers.com Date: Wed Dec 9 15:22:55 2020 +0330
wined3d: Ensure the last mip-level is at least large enough to hold a single compressed block.
This fixes a regression exposed by commit ca0c3f770ae4fe4d535f59f2d54b4c0a531e800f, but probably originally introduced by commit 3f7e5d647e40ce09292e7164eb5cc49ac77914cc.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48362 Signed-off-by: Henri Verbeet hverbeet@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/wined3d/texture.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/dlls/wined3d/texture.c b/dlls/wined3d/texture.c index 6c9627d21f8..69f948c5fd2 100644 --- a/dlls/wined3d/texture.c +++ b/dlls/wined3d/texture.c @@ -3683,6 +3683,20 @@ static HRESULT wined3d_texture_init(struct wined3d_texture *texture, const struc if (!offset) return WINED3DERR_INVALIDCALL;
+ /* Ensure the last mip-level is at least large enough to hold a single + * compressed block. It is questionable how useful these mip-levels are to + * the application with "broken pitch" formats, but we want to avoid + * memory corruption when loading textures into WINED3D_LOCATION_SYSMEM. */ + if (format->flags[WINED3D_GL_RES_TYPE_TEX_2D] & WINED3DFMT_FLAG_BROKEN_PITCH) + { + unsigned int min_size; + + min_size = texture->sub_resources[level_count * layer_count - 1].offset + format->block_byte_count; + min_size = (min_size + (RESOURCE_ALIGNMENT - 1)) & ~(RESOURCE_ALIGNMENT - 1); + if (min_size > offset) + offset = min_size; + } + if (FAILED(hr = resource_init(&texture->resource, device, desc->resource_type, format, desc->multisample_type, desc->multisample_quality, desc->usage, desc->bind_flags, desc->access, desc->width, desc->height, desc->depth, offset, parent, parent_ops, &texture_resource_ops)))