From e6a2787f65dc4d2b982de151017f4cb7f94f3e2c Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Fri, 7 May 2010 17:34:15 +0800 Subject: [PATCH] st/mesa: Ignore internal_format in st_context_teximage. When internal_format and tex->format differ, st_finailize_texture will surface_copy between surfaces with different formats. This commit works around the issue by ignoring internal_format. A sane fix is needed here. --- src/mesa/state_tracker/st_manager.c | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/src/mesa/state_tracker/st_manager.c b/src/mesa/state_tracker/st_manager.c index ea89553..50c55a8 100644 --- a/src/mesa/state_tracker/st_manager.c +++ b/src/mesa/state_tracker/st_manager.c @@ -541,7 +541,16 @@ st_context_teximage(struct st_context_iface *stctxi, enum st_texture_type target texImage = _mesa_get_tex_image(ctx, texObj, target, level); stImage = st_texture_image(texImage); if (tex) { - if (util_format_get_component_bits(internal_format, + /* + * XXX When internal_format and tex->format differ, st_finalize_texture + * needs to allocate a new texture with internal_format and copy the + * texture here into the new one. It will result in surface_copy being + * called on surfaces whose formats differ. + * + * To avoid that, internal_format is (wrongly) ignored here. A sane fix + * is to use a sampler view. + */ + if (util_format_get_component_bits(tex->format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 0) internalFormat = GL_RGBA; else -- 1.7.1