c0bd9f9fe5
Current strategy: everything from the top
Things to look at first are the manual changes:
- added tools/rewrite_includes.py
- removed -Idirectives from BUILD.gn
- various compile.sh simplifications
- tweak tools/embed_resources.py
- update gn/find_headers.py to write paths from the top
- update gn/gn_to_bp.py SkUserConfig.h layout
so that #include "include/config/SkUserConfig.h" always
gets the header we want.
No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkColor.h"
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#include "include/core/SkPixmap.h"
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#include "include/private/SkHalf.h"
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#include "include/private/SkTo.h"
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#include "include/utils/SkRandom.h"
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#include "src/core/SkAutoPixmapStorage.h"
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#include "src/core/SkOpts.h"
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#include "tests/Test.h"
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#include <cmath>
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static bool is_denorm(uint16_t h) {
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return (h & 0x7fff) < 0x0400;
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}
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static bool is_finite(uint16_t h) {
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return (h & 0x7c00) != 0x7c00;
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}
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DEF_TEST(SkHalfToFloat_finite_ftz, r) {
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for (uint32_t h = 0; h <= 0xffff; h++) {
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if (!is_finite(h)) {
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// _finite_ftz() only works for values that can be represented as a finite half float.
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continue;
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}
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// _finite_ftz() may flush denorms to zero. 0.0f will compare == with both +0.0f and -0.0f.
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float expected = SkHalfToFloat(h),
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alternate = is_denorm(h) ? 0.0f : expected;
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float actual = SkHalfToFloat_finite_ftz(h)[0];
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REPORTER_ASSERT(r, actual == expected || actual == alternate);
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}
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}
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DEF_TEST(SkFloatToHalf_finite_ftz, r) {
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#if 0
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for (uint64_t bits = 0; bits <= 0xffffffff; bits++) {
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#else
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SkRandom rand;
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for (int i = 0; i < 1000000; i++) {
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uint32_t bits = rand.nextU();
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#endif
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float f;
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memcpy(&f, &bits, 4);
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uint16_t expected = SkFloatToHalf(f);
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if (!is_finite(expected)) {
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// _finite_ftz() only works for values that can be represented as a finite half float.
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continue;
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}
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uint16_t alternate = expected;
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if (is_denorm(expected)) {
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// _finite_ftz() may flush denorms to zero, and happens to keep the sign bit.
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alternate = std::signbit(f) ? 0x8000 : 0x0000;
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}
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uint16_t actual = SkFloatToHalf_finite_ftz(Sk4f{f})[0];
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// _finite_ftz() may truncate instead of rounding, so it may be one too small.
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REPORTER_ASSERT(r, actual == expected || actual == expected - 1 ||
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actual == alternate || actual == alternate - 1);
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}
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}
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