From: Wladimir J. van der Laan Date: Wed, 7 Dec 2016 12:59:54 +0000 (+0000) Subject: etnaviv: Cannot render to rb-swapped formats X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=658568941d5e232d690e1ffbcddbd6ea9685693a;p=mesa.git etnaviv: Cannot render to rb-swapped formats Exposing rb swapped (or other swizzled) formats for rendering would involve swizzing in the pixel shader. This is not the case at the moment, so reject requests for creating such surfaces. (GPUs that need an extra resolve step anyway due to multiple pixel pipes, such as gc2000, might also do this swap in the resolve operation. But this would be tricky to keep track of) CC: Signed-off-by: Wladimir J. van der Laan Acked-by: Christian Gmeiner --- diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c index c045f7e0721..7c1609f5b72 100644 --- a/src/gallium/drivers/etnaviv/etnaviv_screen.c +++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c @@ -471,8 +471,11 @@ etna_screen_is_format_supported(struct pipe_screen *pscreen, return FALSE; if (usage & PIPE_BIND_RENDER_TARGET) { - /* if render target, must be RS-supported format */ - if (translate_rs_format(format) != ETNA_NO_MATCH) { + /* If render target, must be RS-supported format that is not rb swapped. + * Exposing rb swapped (or other swizzled) formats for rendering would + * involve swizzing in the pixel shader. + */ + if (translate_rs_format(format) != ETNA_NO_MATCH && !translate_rs_format_rb_swap(format)) { /* Validate MSAA; number of samples must be allowed, and render target * must have MSAA'able format. */ if (sample_count > 1) {