diff options
Diffstat (limited to 'src/GPU2D_Soft.cpp')
| -rw-r--r-- | src/GPU2D_Soft.cpp | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/src/GPU2D_Soft.cpp b/src/GPU2D_Soft.cpp index 8806273..66095e1 100644 --- a/src/GPU2D_Soft.cpp +++ b/src/GPU2D_Soft.cpp @@ -67,24 +67,24 @@ u32 SoftRenderer::ColorBlend5(u32 val1, u32 val2) return r | g | b | 0xFF000000; } -u32 SoftRenderer::ColorBrightnessUp(u32 val, u32 factor) +u32 SoftRenderer::ColorBrightnessUp(u32 val, u32 factor, u32 bias) { u32 rb = val & 0x3F003F; u32 g = val & 0x003F00; - rb += (((((0x3F003F - rb) * factor) + 0x080008) >> 4) & 0x3F003F); - g += (((((0x003F00 - g ) * factor) + 0x000800) >> 4) & 0x003F00); + rb += (((((0x3F003F - rb) * factor) + (bias*0x010001)) >> 4) & 0x3F003F); + g += (((((0x003F00 - g ) * factor) + (bias*0x000100)) >> 4) & 0x003F00); return rb | g | 0xFF000000; } -u32 SoftRenderer::ColorBrightnessDown(u32 val, u32 factor) +u32 SoftRenderer::ColorBrightnessDown(u32 val, u32 factor, u32 bias) { u32 rb = val & 0x3F003F; u32 g = val & 0x003F00; - rb -= ((((rb * factor) + 0x070007) >> 4) & 0x3F003F); - g -= ((((g * factor) + 0x000700) >> 4) & 0x003F00); + rb -= ((((rb * factor) + (bias*0x010001)) >> 4) & 0x3F003F); + g -= ((((g * factor) + (bias*0x000100)) >> 4) & 0x003F00); return rb | g | 0xFF000000; } @@ -153,8 +153,8 @@ u32 SoftRenderer::ColorComposite(int i, u32 val1, u32 val2) { case 0: return val1; case 1: return ColorBlend4(val1, val2, eva, evb); - case 2: return ColorBrightnessUp(val1, CurUnit->EVY); - case 3: return ColorBrightnessDown(val1, CurUnit->EVY); + case 2: return ColorBrightnessUp(val1, CurUnit->EVY, 0x8); + case 3: return ColorBrightnessDown(val1, CurUnit->EVY, 0x7); case 4: return ColorBlend5(val1, val2); } @@ -328,7 +328,7 @@ void SoftRenderer::DrawScanline(u32 line, Unit* unit) for (int i = 0; i < 256; i++) { - dst[i] = ColorBrightnessUp(dst[i], factor); + dst[i] = ColorBrightnessUp(dst[i], factor, 0x0); } } else if ((masterBrightness >> 14) == 2) @@ -339,7 +339,7 @@ void SoftRenderer::DrawScanline(u32 line, Unit* unit) for (int i = 0; i < 256; i++) { - dst[i] = ColorBrightnessDown(dst[i], factor); + dst[i] = ColorBrightnessDown(dst[i], factor, 0xF); } } } @@ -445,8 +445,8 @@ void SoftRenderer::DoCapture(u32 line, u32 width) u32 evy = (val3 >> 8) & 0x1F; val1 = _3dval; - if (compmode == 2) val1 = ColorBrightnessUp(val1, evy); - else if (compmode == 3) val1 = ColorBrightnessDown(val1, evy); + if (compmode == 2) val1 = ColorBrightnessUp(val1, evy, 0x8); + else if (compmode == 3) val1 = ColorBrightnessDown(val1, evy, 0x7); } else val1 = val2; |