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st/mesa: avoid sw fallback for getting/decompressing textures

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If st_GetTexImage() is to decompress the texture, avoid the fallback
path even if prefer_blit_based_texture_transfer = false.  For drivers
that returned PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER = 0, we
were always taking the fallback path for texture decompression rather
than rendering a quad.  The later is a lot faster.

Cc: "10.0" "10.1" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Brian Paul 2014-02-07 09:32:05 -07:00
parent 5125165dde
commit f47e596288
1 changed files with 3 additions and 1 deletions
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4
src/mesa/state_tracker/st_cb_texture.c
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@ -865,7 +865,9 @@ st_GetTexImage(struct gl_context * ctx,
ubyte *map = NULL;
boolean done = FALSE;
if (!st->prefer_blit_based_texture_transfer) {
if (!st->prefer_blit_based_texture_transfer &&
!_mesa_is_format_compressed(texImage->TexFormat)) {
/* Try to avoid the fallback if we're doing texture decompression here */
goto fallback;
}