piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-23 06:09:50 -06:00
Code Issues Packages Projects Releases Wiki Activity

Moving pixel engine and command processor from core to video common. This will break previous save states. Adds decoding single pixels to texture decoder.

Browse Source 
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4391 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
donkopunchstania
2009-10-10 21:19:39 +00:00
parent 5049fcf9f5
commit 56214e9103
34 changed files with 1889 additions and 1460 deletions
Download Patch File Download Diff File Expand all files Collapse all files

337
Source/Core/VideoCommon/Src/TextureDecoder.cpp
View File

@ -325,6 +325,11 @@ inline u32 makecol(int r, int g, int b, int a)
return (a << 24)|(r << 16)|(g << 8)|b;
}
inline u32 makeRGBA(int r, int g, int b, int a)
{
return (a<<24)|(b<<16)|(g<<8)|r;
}
void decodeDXTBlock(u32 *dst, const DXTBlock *src, int pitch)
{
// S3TC Decoder (Note: GCN decodes differently from PC so we can't use native support)
@ -664,6 +669,338 @@ PC_TexFormat TexDecoder_Decode(u8 *dst, const u8 *src, int width, int height, in
return retval;
}
inline u32 decode565RGBA(u16 val)
{
int r,g,b,a;
r=Convert5To8((val>>11) & 0x1f);
g=Convert6To8((val>>5 ) & 0x3f);
b=Convert5To8((val ) & 0x1f);
a=0xFF;
return r | (g<<8) | (b << 16) | (a << 24);
}
inline u32 decodeIA8Swapped(u16 val)
{
int a = val & 0xFF;
int i = val >> 8;
return i | (i<<8) | (i<<16) | (a<<24);
}
inline u32 decode5A3RGBA(u16 val)
{
int r,g,b,a;
if ((val&0x8000))
{
r=Convert5To8((val>>10) & 0x1f);
g=Convert5To8((val>>5 ) & 0x1f);
b=Convert5To8((val ) & 0x1f);
a=0xFF;
}
else
{
a=Convert3To8((val>>12) & 0x7);
r=Convert4To8((val>>8 ) & 0xf);
g=Convert4To8((val>>4 ) & 0xf);
b=Convert4To8((val ) & 0xf);
}
return r | (g<<8) | (b << 16) | (a << 24);
}
void TexDecoder_DecodeTexel(u8 *dst, const u8 *src, int s, int t, int imageWidth, int texformat, int tlutaddr, int tlutfmt)
{
/* General formula for computing texture offset
//
u16 sBlk = s / blockWidth;
u16 tBlk = t / blockHeight;
u16 widthBlks = (width / blockWidth) + 1;
u32 base = (tBlk * widthBlks + sBlk) * blockWidth * blockHeight;
u16 blkS = s & (blockWidth - 1);
u16 blkT = t & (blockHeight - 1);
u32 blkOff = blkT * blockWidth + blkS;
*/
switch (texformat)
{
case GX_TF_C4:
{
u16 sBlk = s >> 3;
u16 tBlk = t >> 3;
u16 widthBlks = (imageWidth >> 3) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 5;
u16 blkS = s & 7;
u16 blkT = t & 7;
u32 blkOff = (blkT << 3) + blkS;
int rs = (blkOff & 1)?0:4;
u32 offset = base + (blkOff >> 1);
u8 val = (*(src + offset) >> rs) & 0xF;
u16 *tlut = (u16*)(texMem + tlutaddr);
switch (tlutfmt)
{
case 0:
*((u32*)dst) = decodeIA8Swapped(tlut[val]);
break;
case 1:
*((u32*)dst) = decode565RGBA(Common::swap16(tlut[val]));
break;
case 2:
*((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val]));
break;
}
}
break;
case GX_TF_I4:
{
u16 sBlk = s >> 3;
u16 tBlk = t >> 3;
u16 widthBlks = (imageWidth >> 3) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 5;
u16 blkS = s & 7;
u16 blkT = t & 7;
u32 blkOff = (blkT << 3) + blkS;
int rs = (blkOff & 1)?0:4;
u32 offset = base + (blkOff >> 1);
u8 val = (*(src + offset) >> rs) & 0xF;
val = Convert4To8(val);
dst[0] = val;
dst[1] = val;
dst[2] = val;
dst[3] = val;
}
break;
case GX_TF_I8:
{
u16 sBlk = s >> 3;
u16 tBlk = t >> 2;
u16 widthBlks = (imageWidth >> 3) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 5;
u16 blkS = s & 7;
u16 blkT = t & 3;
u32 blkOff = (blkT << 3) + blkS;
u8 val = *(src + base + blkOff);
dst[0] = val;
dst[1] = val;
dst[2] = val;
dst[3] = val;
}
break;
case GX_TF_C8:
{
u16 sBlk = s >> 3;
u16 tBlk = t >> 2;
u16 widthBlks = (imageWidth >> 3) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 5;
u16 blkS = s & 7;
u16 blkT = t & 3;
u32 blkOff = (blkT << 3) + blkS;
u8 val = *(src + base + blkOff);
u16 *tlut = (u16*)(texMem + tlutaddr);
switch (tlutfmt)
{
case 0:
*((u32*)dst) = decodeIA8Swapped(tlut[val]);
break;
case 1:
*((u32*)dst) = decode565RGBA(Common::swap16(tlut[val]));
break;
case 2:
*((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val]));
break;
}
}
break;
case GX_TF_IA4:
{
u16 sBlk = s >> 3;
u16 tBlk = t >> 2;
u16 widthBlks = (imageWidth >> 3) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 5;
u16 blkS = s & 7;
u16 blkT = t & 3;
u32 blkOff = (blkT << 3) + blkS;
u8 val = *(src + base + blkOff);
const u8 a = Convert4To8(val>>4);
const u8 l = Convert4To8(val&0xF);
dst[0] = l;
dst[1] = l;
dst[2] = l;
dst[3] = a;
}
break;
case GX_TF_IA8:
{
u16 sBlk = s >> 2;
u16 tBlk = t >> 2;
u16 widthBlks = (imageWidth >> 2) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 4;
u16 blkS = s & 3;
u16 blkT = t & 3;
u32 blkOff = (blkT << 2) + blkS;
u32 offset = (base + blkOff) << 1;
const u16* valAddr = (u16*)(src + offset);
*((u32*)dst) = decodeIA8Swapped(*valAddr);
}
break;
case GX_TF_C14X2:
{
u16 sBlk = s >> 2;
u16 tBlk = t >> 2;
u16 widthBlks = (imageWidth >> 2) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 4;
u16 blkS = s & 3;
u16 blkT = t & 3;
u32 blkOff = (blkT << 2) + blkS;
u32 offset = (base + blkOff) << 1;
const u16* valAddr = (u16*)(src + offset);
u16 val = Common::swap16(*valAddr) & 0x3FFF;
u16 *tlut = (u16*)(texMem + tlutaddr);
switch (tlutfmt)
{
case 0:
*((u32*)dst) = decodeIA8Swapped(tlut[val]);
break;
case 1:
*((u32*)dst) = decode565RGBA(Common::swap16(tlut[val]));
break;
case 2:
*((u32*)dst) = decode5A3RGBA(Common::swap16(tlut[val]));
break;
}
}
break;
case GX_TF_RGB565:
{
u16 sBlk = s >> 2;
u16 tBlk = t >> 2;
u16 widthBlks = (imageWidth >> 2) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 4;
u16 blkS = s & 3;
u16 blkT = t & 3;
u32 blkOff = (blkT << 2) + blkS;
u32 offset = (base + blkOff) << 1;
const u16* valAddr = (u16*)(src + offset);
*((u32*)dst) = decode565RGBA(Common::swap16(*valAddr));
}
break;
case GX_TF_RGB5A3:
{
u16 sBlk = s >> 2;
u16 tBlk = t >> 2;
u16 widthBlks = (imageWidth >> 2) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 4;
u16 blkS = s & 3;
u16 blkT = t & 3;
u32 blkOff = (blkT << 2) + blkS;
u32 offset = (base + blkOff) << 1;
const u16* valAddr = (u16*)(src + offset);
*((u32*)dst) = decode5A3RGBA(Common::swap16(*valAddr));
}
break;
case GX_TF_RGBA8:
{
u16 sBlk = s >> 2;
u16 tBlk = t >> 2;
u16 widthBlks = (imageWidth >> 2) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 5; // shift by 5 is correct
u16 blkS = s & 3;
u16 blkT = t & 3;
u32 blkOff = (blkT << 2) + blkS;
u32 offset = (base + blkOff) << 1 ;
const u8* valAddr = src + offset;
dst[3] = valAddr[0];
dst[0] = valAddr[1];
dst[1] = valAddr[32];
dst[2] = valAddr[33];
}
break;
case GX_TF_CMPR:
{
u16 sDxt = s >> 2;
u16 tDxt = t >> 2;
u16 sBlk = sDxt >> 1;
u16 tBlk = tDxt >> 1;
u16 widthBlks = (imageWidth >> 3) + 1;
u32 base = (tBlk * widthBlks + sBlk) << 2;
u16 blkS = sDxt & 1;
u16 blkT = tDxt & 1;
u32 blkOff = (blkT << 1) + blkS;
u32 offset = (base + blkOff) << 3;
const DXTBlock* dxtBlock = (const DXTBlock*)(src + offset);
u16 c1 = Common::swap16(dxtBlock->color1);
u16 c2 = Common::swap16(dxtBlock->color2);
int blue1 = Convert5To8(c1 & 0x1F);
int blue2 = Convert5To8(c2 & 0x1F);
int green1 = Convert6To8((c1 >> 5) & 0x3F);
int green2 = Convert6To8((c2 >> 5) & 0x3F);
int red1 = Convert5To8((c1 >> 11) & 0x1F);
int red2 = Convert5To8((c2 >> 11) & 0x1F);
u16 ss = s & 3;
u16 tt = t & 3;
int colorSel = dxtBlock->lines[tt];
int rs = 6 - (ss << 1);
colorSel = (colorSel >> rs) & 3;
colorSel |= c1 > c2?0:4;
u32 color = 0;
switch (colorSel)
{
case 0:
case 4:
color = makeRGBA(red1, green1, blue1, 255);
break;
case 1:
case 5:
color = makeRGBA(red2, green2, blue2, 255);
break;
case 2:
color = makeRGBA(red1+(red2-red1)/3, green1+(green2-green1)/3, blue1+(blue2-blue1)/3, 255);
break;
case 3:
color = makeRGBA(red2+(red1-red2)/3, green2+(green1-green2)/3, blue2+(blue1-blue2)/3, 255);
break;
case 6:
color = makeRGBA((int)ceil((float)(red1+red2)/2), (int)ceil((float)(green1+green2)/2), (int)ceil((float)(blue1+blue2)/2), 255);
break;
case 7:
color = makeRGBA(red2, green2, blue2, 0);
break;
}
*((u32*)dst) = color;
}
break;
}
}
const char* texfmt[] = {
// pixel
"I4", "I8", "IA4", "IA8",