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用simd对混色三巨头进行了改写，不过效率提高的确实不明显

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root 2024-05-11 14:55:29 +08:00
parent 4da9434d46
commit 4725daa5ec
1 changed files with 57 additions and 10 deletions
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67
src/nba/src/hw/ppu/merge.cpp
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@ -4,7 +4,7 @@
* Licensed under GPLv3 or any later version.
* Refer to the included LICENSE file.
*/
#include <wasm_simd128.h>
#include <algorithm>
#include "ppu.hpp"
@ -24,10 +24,29 @@ ALWAYS_INLINE static u16 Blend(u16 color_a, u16 color_b, int eva, int evb) {
eva = std::min<int>(16, eva);
evb = std::min<int>(16, evb);
const int r = std::min<u8>((r_a * eva + r_b * evb + 8) >> 4, 31);
const int g = std::min<u8>((g_a * eva + g_b * evb + 8) >> 4, 63) >> 1;
const int b = std::min<u8>((b_a * eva + b_b * evb + 8) >> 4, 31);
auto colora = wasm_i32x4_make(r_a, g_a, b_a, 0);
auto colorb = wasm_i32x4_make(r_b, g_b, b_b, 0);
auto evavec = wasm_i32x4_make(eva, eva, eva, 0);
auto evbvec = wasm_i32x4_make(evb, evb, evb, 0);
auto number = wasm_i32x4_make(8, 8, 8, 0);
auto factor = wasm_i32x4_mul( colora, evavec );
auto result = wasm_i32x4_mul( colorb, evbvec );
result = wasm_i32x4_add( result, factor );
result = wasm_i32x4_add( result, number );
result = wasm_i32x4_shr( result, 4 );
number = wasm_i32x4_make( 31, 63, 31, 0 );
result = wasm_i32x4_min( result, number );
int r = wasm_i32x4_extract_lane( result, 0 );
int g = wasm_i32x4_extract_lane( result, 1 );
int b = wasm_i32x4_extract_lane( result, 2 );
g >>= 1;
// const int r = std::min<u8>((r_a * eva + r_b * evb + 8) >> 4, 31);
// const int g = std::min<u8>((g_a * eva + g_b * evb + 8) >> 4, 63) >> 1;
// const int b = std::min<u8>((b_a * eva + b_b * evb + 8) >> 4, 31);
return (u16)((b << 10) | (g << 5) | r);
}
@ -38,9 +57,24 @@ ALWAYS_INLINE static u16 Brighten(u16 color, int evy) {
int g = ((color >> 4) & 62) | (color >> 15);
int b = (color >> 10) & 31;
r += ((31 - r) * evy + 8) >> 4;
g += ((63 - g) * evy + 8) >> 4;
b += ((31 - b) * evy + 8) >> 4;
auto source = wasm_i32x4_make(r, g, b, 0);
auto maxume = wasm_i32x4_make(31, 63, 31, 0);
auto factor = wasm_i32x4_make(r, g, b, 0);
auto evyvec = wasm_i32x4_make(evy, evy, evy, 0);
auto number = wasm_i32x4_make(8, 8, 8, 0);
auto result = wasm_i32x4_sub( maxume, factor );
result = wasm_i32x4_mul( result, evyvec );
result = wasm_i32x4_add( result, number );
result = wasm_i32x4_shr( result, 4 );
result = wasm_i32x4_add( source, result );
r = wasm_i32x4_extract_lane( result, 0 );
g = wasm_i32x4_extract_lane( result, 1 );
b = wasm_i32x4_extract_lane( result, 2 );
// r += ((31 - r) * evy + 8) >> 4;
// g += ((63 - g) * evy + 8) >> 4;
// b += ((31 - b) * evy + 8) >> 4;
g >>= 1;
@ -54,9 +88,22 @@ ALWAYS_INLINE static u16 Darken(u16 color, int evy) {
int g = ((color >> 4) & 62) | (color >> 15);
int b = (color >> 10) & 31;
r -= (r * evy + 7) >> 4;
g -= (g * evy + 7) >> 4;
b -= (b * evy + 7) >> 4;
auto source = wasm_i32x4_make(r, g, b, 0);
auto factor = wasm_i32x4_make(r, g, b, 0);
auto evyvec = wasm_i32x4_make(evy, evy, evy, 0);
auto number = wasm_i32x4_make(7, 7, 7, 0);
auto result = wasm_i32x4_mul( factor, evyvec );
result = wasm_i32x4_add( result, number );
result = wasm_i32x4_shr( result, 4 );
result = wasm_i32x4_sub( source, result );
r = wasm_i32x4_extract_lane( result, 0 );
g = wasm_i32x4_extract_lane( result, 1 );
b = wasm_i32x4_extract_lane( result, 2 );
// r -= (r * evy + 7) >> 4;
// g -= (g * evy + 7) >> 4;
// b -= (b * evy + 7) >> 4;
g >>= 1;