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gpu: fix rotozoomed 2d mapped direct color bmp sprites. fixes knights in the nightmare credits intro

This commit is contained in:
zeromus 2009-07-19 09:41:05 +00:00
parent 4a19bac748
commit c24caade3e
1 changed files with 44 additions and 27 deletions
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71
desmume/src/GPU.cpp
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@ -1745,8 +1745,37 @@ FORCEINLINE BOOL compute_sprite_vars(_OAM_ * spriteInfo, u16 l,
// SPRITE RENDERING
/*****************************************************************************/
//TODO - refactor this so there isnt as much duped code between rotozoomed and non-rotozoomed versions
static u8* bmp_sprite_address(GPU* gpu, _OAM_ * spriteInfo, size sprSize, s32 y)
{
u8* src;
if (spriteInfo->Mode == 3) //sprite is in BMP format
{
if (gpu->dispCnt().OBJ_BMP_mapping)
{
//tested by buffy sacrifice damage blood splatters in corner
src = (u8 *)MMU_gpu_map(gpu->sprMem + (spriteInfo->TileIndex<<gpu->sprBMPBoundary) + (y*sprSize.x*2));
}
else
{
//2d mapping:
//verified in rotozoomed mode by knights in the nightmare intro
if (gpu->dispCnt().OBJ_BMP_2D_dim)
//256*256, verified by heroes of mana FMV intro
src = (u8 *)MMU_gpu_map(gpu->sprMem + (((spriteInfo->TileIndex&0x3E0) * 64 + (spriteInfo->TileIndex&0x1F) *8 + ( y << 8)) << 1));
else
//128*512, verified by harry potter and the order of the phoenix conversation portraits
src = (u8 *)MMU_gpu_map(gpu->sprMem + (((spriteInfo->TileIndex&0x3F0) * 64 + (spriteInfo->TileIndex&0x0F) *8 + ( y << 7)) << 1));
}
}
return src;
}
template<GPU::SpriteRenderMode MODE>
void GPU::_spriteRender(u8 * dst, u8 * dst_alpha, u8 * typeTab, u8 * prioTab)
{
@ -1786,6 +1815,7 @@ void GPU::_spriteRender(u8 * dst, u8 * dst_alpha, u8 * typeTab, u8 * prioTab)
prio = spriteInfo->Priority;
if (spriteInfo->RotScale & 1)
{
s32 fieldX, fieldY, auxX, auxY, realX, realY, offset;
@ -1906,23 +1936,26 @@ void GPU::_spriteRender(u8 * dst, u8 * dst_alpha, u8 * typeTab, u8 * prioTab)
// Rotozoomed direct color
else if(spriteInfo->Mode == 3)
{
if (dispCnt->OBJ_BMP_mapping)
src = (u8 *)MMU_gpu_map(gpu->sprMem + (spriteInfo->TileIndex<<sprBMPBoundary));
else
//NOT TESTED
src = (u8 *)MMU_gpu_map(gpu->sprMem + (((spriteInfo->TileIndex&0x03E0) * 8) + (spriteInfo->TileIndex&0x001F))*16);
src = bmp_sprite_address(this,spriteInfo,sprSize,0);
for(j = 0; j < lg; ++j, ++sprX)
{
// Get the integer part of the fixed point 8.8, and check if it lies inside the sprite data
auxX = (realX>>8);
auxY = (realY>>8);
//this is all very slow, and so much dup code with other rotozoomed modes.
//dont bother fixing speed until this whole thing gets reworked
if (auxX >= 0 && auxY >= 0 && auxX < sprSize.x && auxY < sprSize.y)
{
//if(MODE == SPRITE_2D) //tested by buffy sacrifice damage blood splatters in corner
//else //tested by lego indiana jones
offset = auxX + (auxY*sprSize.x);
if(dispCnt->OBJ_BMP_2D_dim)
//tested by knights in the nightmare
offset = (bmp_sprite_address(this,spriteInfo,sprSize,auxY)-src)/2+auxX;
else //tested by lego indiana jones (somehow?)
//tested by buffy sacrifice damage blood splatters in corner
offset = auxX + (auxY*sprSize.x);
colour = T1ReadWord (src, offset<<1);
@ -2023,29 +2056,13 @@ void GPU::_spriteRender(u8 * dst, u8 * dst_alpha, u8 * typeTab, u8 * prioTab)
continue;
}
if (spriteInfo->Mode == 3) /* sprite is in BMP format */
if (spriteInfo->Mode == 3) //sprite is in BMP format
{
src = bmp_sprite_address(this,spriteInfo,sprSize, y);
//transparent (i think, dont bother to render?) if alpha is 0
if(spriteInfo->PaletteIndex == 0)
continue;
if (dispCnt->OBJ_BMP_mapping)
{
//tested by buffy sacrifice damage blood splatters in corner
src = (u8 *)MMU_gpu_map(gpu->sprMem + (spriteInfo->TileIndex<<sprBMPBoundary) + (y*sprSize.x*2));
}
else
{
//2d mapping:
if (dispCnt->OBJ_BMP_2D_dim)
//256*256, verified by heroes of mana FMV intro
src = (u8 *)MMU_gpu_map(gpu->sprMem + (((spriteInfo->TileIndex&0x3E0) * 64 + (spriteInfo->TileIndex&0x1F) *8 + ( y << 8)) << 1));
else
//128*512, verified by harry potter and the order of the phoenix conversation portraits
src = (u8 *)MMU_gpu_map(gpu->sprMem + (((spriteInfo->TileIndex&0x3F0) * 64 + (spriteInfo->TileIndex&0x0F) *8 + ( y << 7)) << 1));
}
render_sprite_BMP (gpu, i, l, dst, (u16*)src, dst_alpha, typeTab, prioTab, prio, lg, sprX, x, xdir, spriteInfo->PaletteIndex);
continue;