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compress_r11eac_blocks() required more alignment than dst has.

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This shouldn't change any behavior except that the stores to dst
will no longer require 8-byte alignment.

Empirically it seems like we can use 4-byte alignment here,
but u8 (i.e. 1-byte alignment) is always safe.

BUG=skia:5637
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2264103002
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot

Review-Url: https://codereview.chromium.org/2264103002
This commit is contained in:
mtklein 2016-08-22 09:30:53 -07:00 committed by Commit bot
parent 2ec417257b
commit a61b6d4f9e
3 changed files with 12 additions and 18 deletions
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4
infra/bots/recipes/swarm_test.expected/Test-Android-GCC-Nexus6-GPU-Adreno420-Arm7-Debug.json
View File

@ -898,9 +898,7 @@
"_",
"image",
"_",
".SRW",
"--match",
"~CompressCheckerboard"
".SRW"
],
"env": {
"ANDROID_HOME": "[SLAVE_BUILD]/android_sdk/android-sdk",

3
infra/bots/recipes/swarm_test.py
View File

@ -298,9 +298,6 @@ def dm_flags(bot):
if 'Valgrind' in bot: # skia:3021
match.append('~Threaded')
if 'Nexus6' in bot: # skia:5637
match.append('~CompressCheckerboard')
if 'GalaxyS3' in bot: # skia:1699
match.append('~WritePixels')

23
src/opts/SkTextureCompressor_opts.h
View File

@ -150,14 +150,14 @@ namespace SK_OPTS_NS {
}
#endif
static void compress_r11eac_blocks(uint64_t* dst, const uint8_t* src, size_t rowBytes) {
static void compress_r11eac_blocks(uint8_t* dst, const uint8_t* src, size_t rowBytes) {
// Try to avoid switching between vector and non-vector ops...
const uint8_t *const src1 = src;
const uint8_t *const src2 = src + rowBytes;
const uint8_t *const src3 = src + 2*rowBytes;
const uint8_t *const src4 = src + 3*rowBytes;
uint64_t *const dst1 = dst;
uint64_t *const dst2 = dst + 2;
uint8_t *const dst1 = dst;
uint8_t *const dst2 = dst + 16;
const uint8x16_t alphaRow1 = vld1q_u8(src1);
const uint8x16_t alphaRow2 = vld1q_u8(src2);
@ -175,12 +175,12 @@ namespace SK_OPTS_NS {
if (is_zero(alphaRow1)) {
static const uint64x2_t kTransparent = { 0x0020000000002000ULL,
0x0020000000002000ULL };
vst1q_u64(dst1, kTransparent);
vst1q_u64(dst2, kTransparent);
vst1q_u8(dst1, vreinterpretq_u8_u64(kTransparent));
vst1q_u8(dst2, vreinterpretq_u8_u64(kTransparent));
return;
} else if (is_zero(nAlphaRow1)) {
vst1q_u64(dst1, vreinterpretq_u64_u8(cmp));
vst1q_u64(dst2, vreinterpretq_u64_u8(cmp));
vst1q_u8(dst1, cmp);
vst1q_u8(dst2, cmp);
return;
}
}
@ -205,8 +205,8 @@ namespace SK_OPTS_NS {
const uint64x2_t d1 = vcombine_u64(vget_low_u64(indicesLeft), vget_low_u64(indicesRight));
const uint64x2_t d2 = vcombine_u64(vget_high_u64(indicesLeft), vget_high_u64(indicesRight));
vst1q_u64(dst1, d1);
vst1q_u64(dst2, d2);
vst1q_u8(dst1, vreinterpretq_u8_u64(d1));
vst1q_u8(dst2, vreinterpretq_u8_u64(d2));
}
static bool compress_a8_r11eac(uint8_t* dst, const uint8_t* src,
@ -224,12 +224,11 @@ namespace SK_OPTS_NS {
SkASSERT((blocksX % 4) == 0);
uint64_t* encPtr = reinterpret_cast<uint64_t*>(dst);
for (int y = 0; y < blocksY; ++y) {
for (int x = 0; x < blocksX; x+=4) {
// Compress it
compress_r11eac_blocks(encPtr, src + 4*x, rowBytes);
encPtr += 4;
compress_r11eac_blocks(dst, src + 4*x, rowBytes);
dst += 32;
}
src += 4 * rowBytes;
}