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Fixed ROZ centering in namcona1 driver [Phil Stroffolino]

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This commit is contained in:
Pierpaolo Prazzoli 2008-05-02 17:25:39 +00:00
parent 6afeb5015a
commit e6b2a18ba7
1 changed files with 10 additions and 14 deletions
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24
src/mame/video/namcona1.c
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@ -4,7 +4,6 @@
TODO:
- dynamic screen resolution
- bg pen (or the pen of the lower tilemap?)
- roz centering
- sprites, that have the shadow bit set but aren't shadows, have bad colors
- check if the data&0x8000 condition in tilemaps is valid even when 4bpp mode it's used
- namco logo in emeralda demo is missing (it's used with a roz effect)
@ -596,23 +595,20 @@ static void draw_background(running_machine *machine, bitmap_t *bitmap, const re
// used in emeraldia
if(which == 1 && namcona1_vreg[0x8a/2] == 0xfd /* maybe reg & 0x4 */)
{
INT32 incxx = ((INT16)namcona1_vreg[0xc0/2])<<8; //or incyy ?
INT32 incxy = ((INT16)namcona1_vreg[0xc2/2])<<8;
INT32 incyx = ((INT16)namcona1_vreg[0xc4/2])<<8;
INT32 incyy = ((INT16)namcona1_vreg[0xc6/2])<<8; //or incxx ?
UINT32 startx = (INT32)(INT16)namcona1_vreg[0xc8/2]<<12;
UINT32 starty = (INT32)(INT16)namcona1_vreg[0xca/2]<<12;
//namcona1_vreg[0xcc/2]; // changes dx/dy ?
// all ROZ parameters now in 16.16 format
int incxx = ((INT16)namcona1_vreg[0xc0/2])<<8; // or incyy ?
int incxy = ((INT16)namcona1_vreg[0xc2/2])<<8;
int incyx = ((INT16)namcona1_vreg[0xc4/2])<<8;
int incyy = ((INT16)namcona1_vreg[0xc6/2])<<8; // or incxx ?
INT16 xoffset = namcona1_vreg[0xc8/2];
INT16 yoffset = namcona1_vreg[0xca/2];
int dx = 46;
int dy = -8;
// now, apply adjustments to startx, starty to translate the
// ROZ plane. Note that these are corrected by the inc parameters
// to account for scale/rotate state.
int dx = 46; // horizontal adjust in pixels
int dy = -8; // vertical adjust in pixels
startx += dx*incxx + dy*incyx;
starty += dx*incyx + dy*incyy;
UINT32 startx = (xoffset<<12)+incxx*dx+incyx*dy;
UINT32 starty = (yoffset<<12)+incxy*dx+incyy*dy;
tilemap_draw_roz_primask(bitmap, &clip, bg_tilemap[which],
startx, starty, incxx, incxy, incyx, incyy,