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some optimization to the 2D pipeline

This commit is contained in:
Arisotura 2019-05-10 22:22:17 +02:00
parent 7a2504a3a4
commit 44e1593e1f
1 changed files with 14 additions and 15 deletions
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29
src/GPU2D.cpp
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@ -567,6 +567,8 @@ u32 GPU2D::ColorBlend5(u32 val1, u32 val2)
u32 eva = ((val1 >> 24) & 0x1F) + 1;
u32 evb = 32 - eva;
if (eva == 32) return val1;
u32 r = (((val1 & 0x00003F) * eva) + ((val2 & 0x00003F) * evb)) >> 5;
u32 g = ((((val1 & 0x003F00) * eva) + ((val2 & 0x003F00) * evb)) >> 5) & 0x007F00;
u32 b = ((((val1 & 0x3F0000) * eva) + ((val2 & 0x3F0000) * evb)) >> 5) & 0x7F0000;
@ -587,28 +589,24 @@ u32 GPU2D::ColorBlend5(u32 val1, u32 val2)
u32 GPU2D::ColorBrightnessUp(u32 val, u32 factor)
{
u32 r = val & 0x00003F;
u32 rb = val & 0x3F003F;
u32 g = val & 0x003F00;
u32 b = val & 0x3F0000;
r += (((0x00003F - r) * factor) >> 4);
rb += ((((0x3F003F - rb) * factor) >> 4) & 0x3F003F);
g += ((((0x003F00 - g) * factor) >> 4) & 0x003F00);
b += ((((0x3F0000 - b) * factor) >> 4) & 0x3F0000);
return r | g | b | 0xFF000000;
return rb | g | 0xFF000000;
}
u32 GPU2D::ColorBrightnessDown(u32 val, u32 factor)
{
u32 r = val & 0x00003F;
u32 rb = val & 0x3F003F;
u32 g = val & 0x003F00;
u32 b = val & 0x3F0000;
r -= ((r * factor) >> 4);
rb -= (((rb * factor) >> 4) & 0x3F003F);
g -= (((g * factor) >> 4) & 0x003F00);
b -= (((b * factor) >> 4) & 0x3F0000);
return r | g | b | 0xFF000000;
return rb | g | 0xFF000000;
}
@ -667,8 +665,8 @@ void GPU2D::DrawScanline(u32 line)
case 1: // regular display
{
for (int i = 0; i < LineStride; i++)
dst[i] = mode1gfx[i];
for (int i = 0; i < LineStride; i+=2)
*(u64*)&dst[i] = *(u64*)&mode1gfx[i];
}
break;
@ -1193,7 +1191,7 @@ void GPU2D::DrawScanline_Mode1(u32 line, u32* dst, u32* _3dgfx)
u32 linebuf[1024*2 + 64];
u8* windowmask = (u8*)&linebuf[1024*2];
u32 backdrop;
u64 backdrop;
if (Num) backdrop = *(u16*)&GPU::Palette[0x400];
else backdrop = *(u16*)&GPU::Palette[0];
@ -1203,9 +1201,10 @@ void GPU2D::DrawScanline_Mode1(u32 line, u32* dst, u32* _3dgfx)
u8 b = (backdrop & 0x7C00) >> 9;
backdrop = r | (g << 8) | (b << 16) | 0x20000000;
backdrop |= (backdrop << 32);
for (int i = 0; i < LineStride; i++)
linebuf[i] = backdrop;
for (int i = 0; i < LineStride; i+=2)
*(u64*)&linebuf[i] = backdrop;
}
if (DispCnt & 0xE000)