MGislv/GLideN64
1
0
Fork 0
mirror of https://github.com/blawar/GLideN64.git synced 2024-07-07 03:13:49 +00:00
Code Issues Projects Releases Wiki Activity

Add hack for OB64 backgrounds copy.

Browse Source
This commit is contained in:
Sergey Lipskiy 2014-10-28 16:04:08 +06:00
parent 90b2d16170
commit 259f750b79
3 changed files with 70 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Config.h
View File

@ -42,6 +42,8 @@ struct Config
u32 hacks;
};
#define hack_Ogre64 (1<<0) //Ogre Battle 64
extern Config config;
void Config_LoadConfig();

3
RSP.cpp
View File

@ -272,6 +272,9 @@ void RSP_Init()
while (RSP.romname[strlen(RSP.romname) - 1] == ' ')
RSP.romname[strlen(RSP.romname) - 1] = 0;
if (strstr(RSP.romname, (const char *)"OgreBattle64"))
config.hacks |= hack_Ogre64;
memset(&gSP, 0, sizeof(gSPInfo));
gDP.loadTile = &gDP.tiles[7];

65
gSP.cpp
View File

@ -2078,6 +2078,68 @@ void gSPDrawObjRect(const ObjCoordinates & _coords)
gDP.colorImage.height = (u32)(max(gDP.colorImage.height, (u32)gDP.scissor.lry));
}
static
u16 _YUVtoRGBA(u8 y, u8 u, u8 v)
{
float r = y + (1.370705f * (v - 128));
float g = y - (0.698001f * (v - 128)) - (0.337633f * (u - 128));
float b = y + (1.732446f * (u - 128));
r *= 0.125f;
g *= 0.125f;
b *= 0.125f;
//clipping the result
if (r > 32) r = 32;
if (g > 32) g = 32;
if (b > 32) b = 32;
if (r < 0) r = 0;
if (g < 0) g = 0;
if (b < 0) b = 0;
u16 c = (u16)(((u16)(r) << 11) |
((u16)(g) << 6) |
((u16)(b) << 1) | 1);
return c;
}
static
void _drawYUVImageToFrameBuffer(const ObjCoordinates & _objCoords)
{
const u32 ulx = (u32)_objCoords.ulx;
const u32 uly = (u32)_objCoords.uly;
const u32 lrx = (u32)_objCoords.lrx;
const u32 lry = (u32)_objCoords.lry;
const u32 ci_width = gDP.colorImage.width;
const u32 ci_height = gDP.colorImage.height;
if (ulx >= ci_width)
return;
if (uly >= ci_height)
return;
u32 width = 16, height = 16;
if (lrx > ci_width)
width = ci_width - ulx;
if (lry > ci_height)
height = ci_height - uly;
u32 * mb = (u32*)(RDRAM + gDP.textureImage.address); //pointer to the first macro block
u16 * dst = (u16*)(RDRAM + gDP.colorImage.address);
dst += ulx + uly * ci_width;
//yuv macro block contains 16x16 texture. we need to put it in the proper place inside cimg
for (u16 h = 0; h < 16; h++) {
for (u16 w = 0; w < 16; w += 2) {
u32 t = *(mb++); //each u32 contains 2 pixels
if ((h < height) && (w < width)) //clipping. texture image may be larger than color image
{
u8 y0 = (u8)t & 0xFF;
u8 v = (u8)(t >> 8) & 0xFF;
u8 y1 = (u8)(t >> 16) & 0xFF;
u8 u = (u8)(t >> 24) & 0xFF;
*(dst++) = _YUVtoRGBA(y0, u, v);
*(dst++) = _YUVtoRGBA(y1, u, v);
}
}
dst += ci_width - 16;
}
}
void gSPObjRectangle(u32 sp)
{
u32 address = RSP_SegmentToPhysical(sp);
@ -2093,6 +2155,9 @@ void gSPObjRectangleR(u32 sp)
const uObjSprite *objSprite = (uObjSprite*)&RDRAM[address];
gSPSetSpriteTile(objSprite);
ObjCoordinates objCoords(objSprite, true);
if (objSprite->imageFmt == G_IM_FMT_YUV && (config.hacks&hack_Ogre64)) //Ogre Battle needs to copy YUV texture to frame buffer
_drawYUVImageToFrameBuffer(objCoords);
gSPDrawObjRect(objCoords);
}