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* color special effects (fade, blending) 

* sprite blending

not optimized, but works
This commit is contained in:
StapleButter 2017-03-02 19:00:19 +01:00
parent 464717602f
commit e0fa57fbf2
3 changed files with 210 additions and 85 deletions
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285
GPU2D.cpp
View File

@ -83,6 +83,11 @@ void GPU2D::Reset()
memset(BGRotC, 0, 2*2);
memset(BGRotD, 0, 2*2);
BlendCnt = 0;
EVA = 16;
EVB = 0;
EVY = 0;
CaptureCnt = 0;
MasterBrightness = 0;
@ -175,6 +180,18 @@ void GPU2D::Write16(u32 addr, u16 val)
case 0x034: BGRotC[1] = val; return;
case 0x036: BGRotD[1] = val; return;
case 0x050: BlendCnt = val; return;
case 0x052:
EVA = val & 0x1F;
if (EVA > 16) EVA = 16;
EVB = (val >> 8) & 0x1F;
if (EVB > 16) EVB = 16;
return;
case 0x54:
EVY = val & 0x1F;
if (EVY > 16) EVY = 16;
return;
case 0x06C: MasterBrightness = val; return;
}
@ -633,6 +650,8 @@ void GPU2D::DrawScanlineBGMode(u32 line, u32* spritebuf, u32* dst)
void GPU2D::DrawScanline_Mode1(u32 line, u32* dst)
{
u32 linebuf[256*2];
u32 backdrop;
if (Num) backdrop = *(u16*)&GPU::Palette[0x400];
else backdrop = *(u16*)&GPU::Palette[0];
@ -642,12 +661,10 @@ void GPU2D::DrawScanline_Mode1(u32 line, u32* dst)
u8 g = (backdrop & 0x03E0) >> 4;
u8 b = (backdrop & 0x7C00) >> 9;
// TODO: color effect for backdrop
backdrop = r | (g << 8) | (b << 16) | 0x20000000;
for (int i = 0; i < 256; i++)
dst[i] = backdrop;
linebuf[i] = backdrop;
}
// prerender sprites
@ -657,29 +674,121 @@ void GPU2D::DrawScanline_Mode1(u32 line, u32* dst)
switch (DispCnt & 0x7)
{
case 0: DrawScanlineBGMode<0>(line, spritebuf, dst); break;
case 1: DrawScanlineBGMode<1>(line, spritebuf, dst); break;
case 2: DrawScanlineBGMode<2>(line, spritebuf, dst); break;
case 3: DrawScanlineBGMode<3>(line, spritebuf, dst); break;
case 4: DrawScanlineBGMode<4>(line, spritebuf, dst); break;
case 5: DrawScanlineBGMode<5>(line, spritebuf, dst); break;
case 0: DrawScanlineBGMode<0>(line, spritebuf, linebuf); break;
case 1: DrawScanlineBGMode<1>(line, spritebuf, linebuf); break;
case 2: DrawScanlineBGMode<2>(line, spritebuf, linebuf); break;
case 3: DrawScanlineBGMode<3>(line, spritebuf, linebuf); break;
case 4: DrawScanlineBGMode<4>(line, spritebuf, linebuf); break;
case 5: DrawScanlineBGMode<5>(line, spritebuf, linebuf); break;
}
// debug crap
//for (int i = 0; i < 256; i++)
// dst[i] = *(u16*)&GPU::Palette[Num*0x400 + (i>>4)*2 + (line>>4)*32];
// color special effects
// can likely be optimized
u32 bldcnteffect = (BlendCnt >> 6) & 0x3;
for (int i = 0; i < 256; i++)
{
u32 val1 = linebuf[i];
u32 val2 = linebuf[256+i];
u32 coloreffect, eva, evb;
u32 flag1 = val1 >> 24;
if (flag1 & 0x80)
{
// sprite blending
coloreffect = 1;
if (flag1 & 0x40)
{
eva = flag1 & 0x1F;
evb = 16 - eva;
}
else
{
eva = EVA;
evb = EVB;
}
}
else if (BlendCnt & flag1)
{
if ((bldcnteffect == 1) && (BlendCnt & ((val2 >> 16) & 0xFF00)))
{
coloreffect = 1;
eva = EVA;
evb = EVB;
}
else if (bldcnteffect >= 2)
coloreffect = bldcnteffect;
else
coloreffect = 0;
}
else
coloreffect = 0;
switch (coloreffect)
{
case 0:
dst[i] = val1;
break;
case 1:
{
u32 r = (((val1 & 0x00003F) * eva) + ((val2 & 0x00003F) * evb)) >> 4;
u32 g = ((((val1 & 0x003F00) * eva) + ((val2 & 0x003F00) * evb)) >> 4) & 0x007F00;
u32 b = ((((val1 & 0x3F0000) * eva) + ((val2 & 0x3F0000) * evb)) >> 4) & 0x7F0000;
if (r > 0x00003F) r = 0x00003F;
if (g > 0x003F00) g = 0x003F00;
if (b > 0x3F0000) b = 0x3F0000;
dst[i] = r | g | b | 0xFF000000;
}
break;
case 2:
{
u32 r = val1 & 0x00003F;
u32 g = val1 & 0x003F00;
u32 b = val1 & 0x3F0000;
// TODO: confirm (or not) that it's 63 and not 62
r += ((0x00003F - r) * EVY) >> 4;
g += (((0x003F00 - g) * EVY) >> 4) & 0x003F00;
b += (((0x3F0000 - b) * EVY) >> 4) & 0x3F0000;
dst[i] = r | g | b | 0xFF000000;
}
break;
case 3:
{
u32 r = val1 & 0x00003F;
u32 g = val1 & 0x003F00;
u32 b = val1 & 0x3F0000;
r -= (r * EVY) >> 4;
g -= ((g * EVY) >> 4) & 0x003F00;
b -= ((b * EVY) >> 4) & 0x3F0000;
dst[i] = r | g | b | 0xFF000000;
}
break;
}
}
}
typedef void (*DrawPixelFunc)(u32 bgnum, u32* dst, u16 color, u32 blendfunc);
void GPU2D::DrawPixel_Normal(u32 bgnum, u32* dst, u16 color, u32 blendfunc)
void GPU2D::DrawPixel(u32* dst, u16 color, u32 flag)
{
u8 r = (color & 0x001F) << 1;
u8 g = (color & 0x03E0) >> 4;
u8 b = (color & 0x7C00) >> 9;
*dst = r | (g << 8) | (b << 16) | (0x01000000 << bgnum);
*(dst+256) = *dst;
*dst = r | (g << 8) | (b << 16) | flag;
}
void GPU2D::DrawBG_3D(u32 line, u32* dst)
@ -698,7 +807,8 @@ void GPU2D::DrawBG_3D(u32 line, u32* dst)
// TODO: blending
// alpha is 6bit too....?
dst[i] = r | (g << 8) | (b << 16);
dst[i+256] = dst[i];
dst[i] = r | (g << 8) | (b << 16) | 0x01000000;
}
}
@ -715,8 +825,6 @@ void GPU2D::DrawBG_Text(u32 line, u32* dst, u32 bgnum)
u32 widexmask = (bgcnt & 0x4000) ? 0x100 : 0;
DrawPixelFunc drawpixelfn = DrawPixel_Normal;
extpal = (DispCnt & 0x40000000);
if (extpal) extpalslot = ((bgnum<2) && (bgcnt&0x2000)) ? (2+bgnum) : bgnum;
@ -786,7 +894,7 @@ void GPU2D::DrawBG_Text(u32 line, u32* dst, u32 bgnum)
color = GPU::ReadVRAM_BG<u8>(pixelsaddr + tilexoff);
if (color)
drawpixelfn(bgnum, &dst[i], curpal[color], BlendFunc);
DrawPixel(&dst[i], curpal[color], 0x01000000<<bgnum);
xoff++;
}
@ -830,7 +938,7 @@ void GPU2D::DrawBG_Text(u32 line, u32* dst, u32 bgnum)
}
if (color)
drawpixelfn(bgnum, &dst[i], curpal[color], BlendFunc);
DrawPixel(&dst[i], curpal[color], 0x01000000<<bgnum);
xoff++;
}
@ -859,8 +967,6 @@ void GPU2D::DrawBG_Extended(u32 line, u32* dst, u32 bgnum)
if (bgcnt & 0x2000) overflowmask = 0;
else overflowmask = ~(coordmask | 0x7FF);
DrawPixelFunc drawpixelfn = DrawPixel_Normal;
extpal = (DispCnt & 0x40000000);
s16 rotA = BGRotA[bgnum-2];
@ -895,7 +1001,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32* dst, u32 bgnum)
u16 color = GPU::ReadVRAM_BG<u16>(tilemapaddr + (((((rotY & coordmask) >> 8) << yshift) + ((rotX & coordmask) >> 8)) << 1));
if (color & 0x8000)
drawpixelfn(bgnum, &dst[i], color, BlendFunc);
DrawPixel(&dst[i], color, 0x01000000<<bgnum);
}
rotX += rotA;
@ -916,7 +1022,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32* dst, u32 bgnum)
u8 color = GPU::ReadVRAM_BG<u8>(tilemapaddr + (((rotY & coordmask) >> 8) << yshift) + ((rotX & coordmask) >> 8));
if (color)
drawpixelfn(bgnum, &dst[i], pal[color], BlendFunc);
DrawPixel(&dst[i], pal[color], 0x01000000<<bgnum);
}
rotX += rotA;
@ -968,7 +1074,7 @@ void GPU2D::DrawBG_Extended(u32 line, u32* dst, u32 bgnum)
color = GPU::ReadVRAM_BG<u8>(tilesetaddr + ((curtile & 0x03FF) << 6) + (tileyoff << 3) + tilexoff);
if (color)
drawpixelfn(bgnum, &dst[i], curpal[color], BlendFunc);
DrawPixel(&dst[i], curpal[color], 0x01000000<<bgnum);
}
rotX += rotA;
@ -982,14 +1088,12 @@ void GPU2D::DrawBG_Extended(u32 line, u32* dst, u32 bgnum)
void GPU2D::InterleaveSprites(u32* buf, u32 prio, u32* dst)
{
DrawPixelFunc drawpixelfn = DrawPixel_Normal;
for (u32 i = 0; i < 256; i++)
{
if ((buf[i] & 0xF8000) == prio)
{
u32 blendfunc = 0;
drawpixelfn(4, &dst[i], buf[i], blendfunc);
DrawPixel(&dst[i], buf[i] & 0x7FFF, buf[i] & 0xFF000000);
}
}
}
@ -1121,72 +1225,88 @@ void GPU2D::DrawSprite_Rotscale(u16* attrib, u16* rotparams, u32 boundwidth, u32
width <<= 8;
height <<= 8;
//if (spritemode == 3) printf("BAKA");
if (attrib[0] & 0x2000)
if (spritemode == 3)
{
// 256-color
tilenum <<= 5;
ytilefactor <<= 5;
u32 pixelsaddr = (Num ? 0x06600000 : 0x06400000) + tilenum;
// TODO
u32 extpal = (DispCnt & 0x80000000);
u32 alpha = attrib[2] >> 12;
if (!alpha) return;
alpha++;
u16* pal;
if (extpal) pal = GetOBJExtPal(attrib[2] >> 12);
else pal = (u16*)&GPU::Palette[Num ? 0x600 : 0x200];
prio |= (0xC0000000 | (alpha << 24));
for (; xoff < boundwidth;)
{
if ((u32)rotX < width && (u32)rotY < height)
{
u8 color;
// blaaaarg
color = GPU::ReadVRAM_OBJ<u8>(pixelsaddr + ((rotY>>11)*ytilefactor) + ((rotY&0x700)>>5) + ((rotX>>11)*64) + ((rotX&0x700)>>8));
if (color)
dst[xpos] = pal[color] | prio;
}
rotX += rotA;
rotY += rotC;
xoff++;
xpos++;
}
// TODO
}
else
{
// 16-color
tilenum <<= 5;
ytilefactor <<= 5;
u32 pixelsaddr = (Num ? 0x06600000 : 0x06400000) + tilenum;
if (spritemode == 1) prio |= 0x80000000;
else prio |= 0x10000000;
u16* pal = (u16*)&GPU::Palette[Num ? 0x600 : 0x200];
pal += (attrib[2] & 0xF000) >> 8;
for (; xoff < boundwidth;)
if (attrib[0] & 0x2000)
{
if ((u32)rotX < width && (u32)rotY < height)
// 256-color
tilenum <<= 5;
ytilefactor <<= 5;
u32 pixelsaddr = (Num ? 0x06600000 : 0x06400000) + tilenum;
u32 extpal = (DispCnt & 0x80000000);
u16* pal;
if (extpal) pal = GetOBJExtPal(attrib[2] >> 12);
else pal = (u16*)&GPU::Palette[Num ? 0x600 : 0x200];
for (; xoff < boundwidth;)
{
u8 color;
if ((u32)rotX < width && (u32)rotY < height)
{
u8 color;
// blaaaarg
color = GPU::ReadVRAM_OBJ<u8>(pixelsaddr + ((rotY>>11)*ytilefactor) + ((rotY&0x700)>>6) + ((rotX>>11)*32) + ((rotX&0x700)>>9));
// blaaaarg
color = GPU::ReadVRAM_OBJ<u8>(pixelsaddr + ((rotY>>11)*ytilefactor) + ((rotY&0x700)>>5) + ((rotX>>11)*64) + ((rotX&0x700)>>8));
if (rotX & 0x100)
color >>= 4;
else
color &= 0x0F;
if (color)
dst[xpos] = pal[color] | prio;
}
if (color)
dst[xpos] = pal[color] | prio;
rotX += rotA;
rotY += rotC;
xoff++;
xpos++;
}
}
else
{
// 16-color
tilenum <<= 5;
ytilefactor <<= 5;
u32 pixelsaddr = (Num ? 0x06600000 : 0x06400000) + tilenum;
rotX += rotA;
rotY += rotC;
xoff++;
xpos++;
u16* pal = (u16*)&GPU::Palette[Num ? 0x600 : 0x200];
pal += (attrib[2] & 0xF000) >> 8;
for (; xoff < boundwidth;)
{
if ((u32)rotX < width && (u32)rotY < height)
{
u8 color;
// blaaaarg
color = GPU::ReadVRAM_OBJ<u8>(pixelsaddr + ((rotY>>11)*ytilefactor) + ((rotY&0x700)>>6) + ((rotX>>11)*32) + ((rotX&0x700)>>9));
if (rotX & 0x100)
color >>= 4;
else
color &= 0x0F;
if (color)
dst[xpos] = pal[color] | prio;
}
rotX += rotA;
rotY += rotC;
xoff++;
xpos++;
}
}
}
}
@ -1247,6 +1367,8 @@ void GPU2D::DrawSprite_Normal(u16* attrib, u32 width, s32 xpos, u32 ypos, u32* d
if (!alpha) return;
alpha++;
prio |= (0xC0000000 | (alpha << 24));
u32 pixelsaddr = (Num ? 0x06600000 : 0x06400000) + tilenum;
pixelsaddr += (xoff << 1);
@ -1274,6 +1396,9 @@ void GPU2D::DrawSprite_Normal(u16* attrib, u32 width, s32 xpos, u32 ypos, u32* d
tilenum += ((ypos >> 3) * 0x20);
}
if (spritemode == 1) prio |= 0x80000000;
else prio |= 0x10000000;
if (attrib[0] & 0x2000)
{
// 256-color

4
GPU2D.h
View File

@ -62,7 +62,7 @@ private:
s16 BGRotC[2];
s16 BGRotD[2];
u32 BlendFunc;
u16 BlendCnt;
u8 EVA, EVB;
u8 EVY;
@ -78,7 +78,7 @@ private:
template<u32 bgmode> void DrawScanlineBGMode(u32 line, u32* spritebuf, u32* dst);
void DrawScanline_Mode1(u32 line, u32* dst);
static void DrawPixel_Normal(u32 bgnum, u32* dst, u16 color, u32 blendfunc);
void DrawPixel(u32* dst, u16 color, u32 flag);
void DrawBG_3D(u32 line, u32* dst);
void DrawBG_Text(u32 line, u32* dst, u32 num);

6
melonDS.depend
View File

@ -10,7 +10,7 @@
1481161027 c:\documents\sources\melonds\types.h
1488415700 source:c:\documents\sources\melonds\nds.cpp
1488477261 source:c:\documents\sources\melonds\nds.cpp
<stdio.h>
<string.h>
"NDS.h"
@ -87,13 +87,13 @@
"NDS.h"
"SPI.h"
1488415860 source:c:\documents\sources\melonds\gpu2d.cpp
1488477220 source:c:\documents\sources\melonds\gpu2d.cpp
<stdio.h>
<string.h>
"NDS.h"
"GPU.h"
1488398363 c:\documents\sources\melonds\gpu2d.h
1488475640 c:\documents\sources\melonds\gpu2d.h
1481040524 c:\documents\sources\melonds\wifi.h