Attachment 131171 Details for Bug 100613 – another patch that may aid in understanding what's going on

[patch] another patch that may aid in understanding what's going on

0001-gallivm-fudge-channel-shift-logic-on-big-endian.patch (text/plain), 1.43 KB, created by Ray Strode on 2017-05-02 02:00:45 UTC

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Creator: Ray Strode

Created: 2017-05-02 02:00:45 UTC

Size: 1.43 KB

patch

obsolete

>From 6a0886d170da9dc221ea7f8a5fb99f3ef29b494a Mon Sep 17 00:00:00 2001
>From: Ray Strode <rstrode@redhat.com>
>Date: Fri, 21 Apr 2017 15:22:14 -0400
>Subject: [PATCH] gallivm: fudge channel shift logic on big endian
>
>---
> src/gallium/auxiliary/gallivm/lp_bld_format_soa.c | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
>diff --git a/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c
>index 98eb694..fe0dc0d 100644
>--- a/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c
>+++ b/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c
>@@ -650,7 +650,16 @@ lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
>          for (i = 0; i < format_desc->nr_channels; i++) {
>             struct util_format_channel_description chan_desc = format_desc->channel[i];
>             unsigned blockbits = type.width;
>-            unsigned vec_nr = chan_desc.shift / type.width;
>+            unsigned vec_nr;
>+
>+#ifdef PIPE_ARCH_BIG_ENDIAN
>+            if ((format_desc->block.bits % 16) == 0 && (format_desc->block.bits % 32) != 0)
>+              vec_nr = (fetch_width - (chan_desc.shift + chan_desc.size)) / type.width;
>+            else
>+              vec_nr = (format_desc->block.bits - (chan_desc.shift + chan_desc.size)) / type.width;
>+#else
>+            vec_nr = chan_desc.shift / type.width;
>+#endif
>             chan_desc.shift %= type.width;
> 
>             output[i] = lp_build_extract_soa_chan(&bld,
>-- 
>1.8.3.1
>

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Attachments on bug 100613: 130977 | 130980 | 131000 | 131171 | 131577 | 133677

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