diff options
Diffstat (limited to 'third_party/jpeg-xl/lib/jxl/alpha_test.cc')
| -rw-r--r-- | third_party/jpeg-xl/lib/jxl/alpha_test.cc | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/alpha_test.cc b/third_party/jpeg-xl/lib/jxl/alpha_test.cc index a93254f3dd..6e26e77be6 100644 --- a/third_party/jpeg-xl/lib/jxl/alpha_test.cc +++ b/third_party/jpeg-xl/lib/jxl/alpha_test.cc @@ -13,6 +13,16 @@ namespace jxl { namespace { +AlphaBlendingInputLayer makeAbil(const Color& rgb, const float& a) { + const float* data = rgb.data(); + return {data, data + 1, data + 2, &a}; +} + +AlphaBlendingOutput makeAbo(Color& rgb, float& a) { + float* data = rgb.data(); + return {data, data + 1, data + 2, &a}; +} + TEST(AlphaTest, BlendingWithNonPremultiplied) { const Color bg_rgb{100, 110, 120}; const float bg_a = 180.f / 255; @@ -22,16 +32,16 @@ TEST(AlphaTest, BlendingWithNonPremultiplied) { Color out_rgb; float out_a; PerformAlphaBlending( - /*bg=*/{&bg_rgb[0], &bg_rgb[1], &bg_rgb[2], &bg_a}, - /*fg=*/{&fg_rgb[0], &fg_rgb[1], &fg_rgb[2], &fg_a}, - /*out=*/{&out_rgb[0], &out_rgb[1], &out_rgb[2], &out_a}, 1, + /*bg=*/makeAbil(bg_rgb, bg_a), + /*fg=*/makeAbil(fg_rgb, fg_a), + /*out=*/makeAbo(out_rgb, out_a), 1, /*alpha_is_premultiplied=*/false, /*clamp=*/false); EXPECT_ARRAY_NEAR(out_rgb, (Color{77.2f, 83.0f, 90.6f}), 0.05f); EXPECT_NEAR(out_a, 3174.f / 4095, 1e-5); PerformAlphaBlending( - /*bg=*/{&bg_rgb[0], &bg_rgb[1], &bg_rgb[2], &bg_a}, - /*fg=*/{&fg_rgb[0], &fg_rgb[1], &fg_rgb[2], &fg_a2}, - /*out=*/{&out_rgb[0], &out_rgb[1], &out_rgb[2], &out_a}, 1, + /*bg=*/makeAbil(bg_rgb, bg_a), + /*fg=*/makeAbil(fg_rgb, fg_a2), + /*out=*/makeAbo(out_rgb, out_a), 1, /*alpha_is_premultiplied=*/false, /*clamp=*/true); EXPECT_ARRAY_NEAR(out_rgb, fg_rgb, 0.05f); EXPECT_NEAR(out_a, 1.0f, 1e-5); @@ -46,16 +56,16 @@ TEST(AlphaTest, BlendingWithPremultiplied) { Color out_rgb; float out_a; PerformAlphaBlending( - /*bg=*/{&bg_rgb[0], &bg_rgb[1], &bg_rgb[2], &bg_a}, - /*fg=*/{&fg_rgb[0], &fg_rgb[1], &fg_rgb[2], &fg_a}, - /*out=*/{&out_rgb[0], &out_rgb[1], &out_rgb[2], &out_a}, 1, + /*bg=*/makeAbil(bg_rgb, bg_a), + /*fg=*/makeAbil(fg_rgb, fg_a), + /*out=*/makeAbo(out_rgb, out_a), 1, /*alpha_is_premultiplied=*/true, /*clamp=*/false); EXPECT_ARRAY_NEAR(out_rgb, (Color{101.5f, 105.1f, 114.8f}), 0.05f); EXPECT_NEAR(out_a, 3174.f / 4095, 1e-5); PerformAlphaBlending( - /*bg=*/{&bg_rgb[0], &bg_rgb[1], &bg_rgb[2], &bg_a}, - /*fg=*/{&fg_rgb[0], &fg_rgb[1], &fg_rgb[2], &fg_a2}, - /*out=*/{&out_rgb[0], &out_rgb[1], &out_rgb[2], &out_a}, 1, + /*bg=*/makeAbil(bg_rgb, bg_a), + /*fg=*/makeAbil(fg_rgb, fg_a2), + /*out=*/makeAbo(out_rgb, out_a), 1, /*alpha_is_premultiplied=*/true, /*clamp=*/true); EXPECT_ARRAY_NEAR(out_rgb, fg_rgb, 0.05f); EXPECT_NEAR(out_a, 1.0f, 1e-5); |