6 static uint8_t double_to_u8(double d) {  in double_to_u8()
9     return uint8_t(d);  in double_to_u8()
14 typedef uint8_t(*Blend)(uint8_t dst, uint8_t src, uint8_t srcAlpha);
17 static uint8_t blend_double_round(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_double_round()
22 static uint8_t abs_diff(uint8_t a, uint8_t b) {  in abs_diff()
28                  uint8_t dst, uint8_t src, uint8_t alpha) {  in test()
29     const uint8_t golden = blend_double_round(dst, src, alpha);  in test()
30     const uint8_t  blend =          algorithm(dst, src, alpha);  in test()
39 static void test_alpha(skiatest::Reporter* r, uint8_t alpha, int maxDiff, Blend algorithm) {  in test_alpha()
50 static void test_dst(skiatest::Reporter* r, uint8_t dst, int maxDiff, Blend algorithm) {  in test_dst()
60 static uint8_t blend_double_trunc(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_double_trunc()
64 static uint8_t blend_float_trunc(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_float_trunc()
68 static uint8_t blend_float_round(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_float_round()
72 static uint8_t blend_255_trunc(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_255_trunc()
78 static uint8_t blend_255_round(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_255_round()
84 static uint8_t blend_256_trunc(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_256_trunc()
90 static uint8_t blend_256_round(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_256_round()
96 static uint8_t blend_256_round_alt(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_256_round_alt()
97     const uint8_t invAlpha8 = 255 - srcAlpha;  in blend_256_round_alt()
103 static uint8_t blend_256_plus1_trunc(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_256_plus1_trunc()
109 static uint8_t blend_256_plus1_round(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_256_plus1_round()
115 static uint8_t blend_perfect(uint8_t dst, uint8_t src, uint8_t srcAlpha) {  in blend_perfect()
116     const uint8_t invAlpha = 255 - srcAlpha;  in blend_perfect()
124     const uint8_t alpha = 0x00;  in DEF_TEST()
144     const uint8_t dst = 0x00;  in DEF_TEST()
164     const uint8_t alpha = 0xFF;  in DEF_TEST()
184     const uint8_t dst = 0xFF;  in DEF_TEST()