diff options
Diffstat (limited to 'tests/BlendTest.cpp')
| -rw-r--r-- | tests/BlendTest.cpp | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/tests/BlendTest.cpp b/tests/BlendTest.cpp index b72d8d5c75..a0a84d7a7b 100644 --- a/tests/BlendTest.cpp +++ b/tests/BlendTest.cpp @@ -3,6 +3,12 @@ #define ASSERT(x) REPORTER_ASSERT(r, x) +static uint8_t double_to_u8(double d) { + SkASSERT(d >= 0); + SkASSERT(d < 256); + return uint8_t(d); +} + // All algorithms we're testing have this interface. // We want a single channel blend, src over dst, assuming src is premultiplied by srcAlpha. typedef uint8_t(*Blend)(uint8_t dst, uint8_t src, uint8_t srcAlpha); @@ -10,7 +16,7 @@ typedef uint8_t(*Blend)(uint8_t dst, uint8_t src, uint8_t srcAlpha); // This is our golden algorithm. static uint8_t blend_double_round(uint8_t dst, uint8_t src, uint8_t srcAlpha) { SkASSERT(src <= srcAlpha); - return SkToU8(0.5 + src + dst * (255.0 - srcAlpha) / 255.0); + return double_to_u8(0.5 + src + dst * (255.0 - srcAlpha) / 255.0); } static uint8_t abs_diff(uint8_t a, uint8_t b) { @@ -52,15 +58,15 @@ static void test_dst(skiatest::Reporter* r, uint8_t dst, int maxDiff, Blend algo } static uint8_t blend_double_trunc(uint8_t dst, uint8_t src, uint8_t srcAlpha) { - return SkToU8(src + dst * (255.0 - srcAlpha) / 255.0); + return double_to_u8(src + dst * (255.0 - srcAlpha) / 255.0); } static uint8_t blend_float_trunc(uint8_t dst, uint8_t src, uint8_t srcAlpha) { - return SkToU8(src + dst * (255.0f - srcAlpha) / 255.0f); + return double_to_u8(src + dst * (255.0f - srcAlpha) / 255.0f); } static uint8_t blend_float_round(uint8_t dst, uint8_t src, uint8_t srcAlpha) { - return SkToU8(0.5f + src + dst * (255.0f - srcAlpha) / 255.0f); + return double_to_u8(0.5f + src + dst * (255.0f - srcAlpha) / 255.0f); } static uint8_t blend_255_trunc(uint8_t dst, uint8_t src, uint8_t srcAlpha) { |