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Diffstat (limited to 'tests/NonlinearBlendingTest.cpp')
-rw-r--r-- | tests/NonlinearBlendingTest.cpp | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/tests/NonlinearBlendingTest.cpp b/tests/NonlinearBlendingTest.cpp deleted file mode 100644 index 10c12aa280..0000000000 --- a/tests/NonlinearBlendingTest.cpp +++ /dev/null @@ -1,76 +0,0 @@ -/* - * Copyright 2018 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "Test.h" -#include "SkHalf.h" -#include "SkSurface.h" -#include "SkCanvas.h" - -DEF_TEST(NonlinearBlending, r) { - - // First check our familiar basics with linear F16. - { - auto info = SkImageInfo::Make(1,1, kRGBA_F16_SkColorType, kPremul_SkAlphaType, - SkColorSpace::MakeSRGBLinear()); - - auto surface = SkSurface::MakeRaster(info); - surface->getCanvas()->clear(0xff808080); - uint64_t pix; - REPORTER_ASSERT(r, surface->readPixels(info, &pix, sizeof(pix),0,0)); - - // 0x80 in sRGB is ≈ 0.22 linear. - REPORTER_ASSERT(r, SkHalfToFloat(pix & 0xffff) < 0.25f); - } - - // Test that we support sRGB-encoded F16. This is somewhat new. - { - auto info = SkImageInfo::Make(1,1, kRGBA_F16_SkColorType, kPremul_SkAlphaType, - SkColorSpace::MakeSRGB()); - - auto surface = SkSurface::MakeRaster(info); - surface->getCanvas()->clear(0xff808080); - uint64_t pix; - REPORTER_ASSERT(r, surface->readPixels(info, &pix, sizeof(pix),0,0)); - - // 0x80 sRGB is ≈ 0.501. - REPORTER_ASSERT(r, SkHalfToFloat(pix & 0xffff) >= 0.5f); - } - - // Since we're only clear()ing, this should work the same as the last block. - { - auto info = SkImageInfo::Make(1,1, kRGBA_F16_SkColorType, kPremul_SkAlphaType, - SkColorSpace::MakeSRGB()->makeNonlinearBlending()); - - auto surface = SkSurface::MakeRaster(info); - surface->getCanvas()->clear(0xff808080); - uint64_t pix; - REPORTER_ASSERT(r, surface->readPixels(info, &pix, sizeof(pix),0,0)); - - // 0x80 sRGB is ≈ 0.501. - REPORTER_ASSERT(r, SkHalfToFloat(pix & 0xffff) >= 0.5f); - } - - // This won't work until we actually support color spaces with non-linear blending. - if (0) { - auto info = SkImageInfo::Make(1,1, kRGBA_F16_SkColorType, kPremul_SkAlphaType, - SkColorSpace::MakeSRGB()->makeNonlinearBlending()); - - auto surface = SkSurface::MakeRaster(info); - - surface->getCanvas()->clear(SK_ColorWHITE); - SkPaint p; - p.setColor(0x80000000); - surface->getCanvas()->drawPaint(p); - - uint64_t pix; - REPORTER_ASSERT(r, surface->readPixels(info, &pix, sizeof(pix),0,0)); - - // 0x80 sRGB is ≈ 0.501. A likely failure here is ~0.75, linear blending. - REPORTER_ASSERT(r, SkHalfToFloat(pix & 0xffff) >= 0.45f && - SkHalfToFloat(pix & 0xffff) <= 0.55f); - } -} |