Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-26 02:07:14 +03:00
Code Issues Actions 15 Packages Projects Releases Wiki Activity

document 'blits' where the first sent parameter is '1' not '0' as non-sprites, probably clipping windows.

Browse Source
This commit is contained in:
David Haywood 2013-02-20 19:30:15 +00:00
parent 103494349b
commit 1ef9da1b98
1 changed files with 175 additions and 150 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

325
src/mame/drivers/coolridr.c
View File

@ -692,7 +692,7 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
|| m_blitterMode == 0x90 || m_blitterMode == 0xa0 || m_blitterMode == 0xb0 || m_blitterMode == 0xc0)
{
// Serialized 32-bit words in order of appearance:
// 0: 00000000 - totally unknown : always seems to be zero
// 0: 00000000 - unknown, 0x00000000 or 0x00000001, 0 seems to be regular sprite, 1 seems to change meaning of below, possible clip area?
// 1: xxxxxxxx - "Color Number" (all bits or just lower 16/8?)
// 2: 00000000 - unknown : OT flag? (transparency)
// 3: 00000000 - unknown : RF flag? (90 degree rotation)
@ -717,7 +717,16 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
{
// set to 0x00000001 on some objects during the 'film strip' part of attract, otherwise 0
// those objects don't seem visible anyway so might have some special meaning
// this is also set at times during the game
//
// the sprites with 1 set appear to have 0x00000000 in everything after the 4th write (m_blit4 and above)
// so likely have some other meaning and are NOT regular sprite data
m_blit0 = data;
// if (data!=0) printf("blit %08x\n", data);
}
else if (m_blitterSerialCount == 1)
@ -807,173 +816,189 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
}
else if (m_blitterSerialCount == 11)
{
// for text objects this is an address containing the 8-bit tile numbers to use for ASCII text
// I guess the tiles are decoded by a DMA operation earlier, from the compressed ROM?
// we also use this to trigger the actual draw operation
//printf("blit %08x\n", data);
// debug, hide objects without m_blit10 set
//if (m_blit10==0) return;
//if (m_blit0==0) return;
//if (m_blit10!=0)
if (m_indirect_zoom_enable)
if (m_blit0 & 1)
{
// with this bit enabled m_blit10 is a look up to the zoom(?) value eg. 03f42600
//UINT32 temp = space.read_dword(m_blit10);
//printf("road type blit %08x %08x %08x %08x %08x(%08x) %08x %04x %04x %04x %04x %08x %08x (TEMP %08x) %d %d\n", m_blit0, m_blit1, m_blit2, m_blit3, m_blit4_unused, m_blit4, m_blit5_unused, m_vCellCount, m_hCellCount, m_vZoom, m_hZoom, m_blit10, data, temp, m_vPosition, m_hPosition);
/* for the horizontal road during attract there are tables 0x480 bytes long (0x120 dwords) and the value passed points to the start of them */
/* cell sizes for those are are 0011 (v) 0007 (h) with zoom factors of 0020 (half v) 0040 (normal h) */
/* tables seem to be 2x 8-bit values, possibly zoom + linescroll, although ingame ones seem to be 2x16-bit (corrupt? more meaning) */
// NOT A SPRITE
}
// these are something else, not sprites? It still writes 11 dwords I think they have a different meaning
// it might be a clipping area set? looks potentially like co-ordinates at least
//printf("NON-SPRITE blit %08x %08x %08x %08x %08x(%08x) %08x %04x %04x %04x %04x %08x %08x %d %d\n", m_blit0, m_blit1, m_blit2, m_blit3, m_blit4_unused, m_blit4, m_blit5_unused, m_vCellCount, m_hCellCount, m_vZoom, m_hZoom, m_blit10, data, m_vPosition, m_hPosition);
int random;
random = 0;
// not used much..
if (m_blit4 &0x00010000)
{
// printf("type blit %08x %08x %08x %08x %08x(%08x) %08x %04x %04x %04x %04x %08x %08x %d %d\n", m_blit0, m_blit1, m_blit2, m_blit3, m_blit4_unused, m_blit4, m_blit5_unused, m_vCellCount, m_hCellCount, m_vZoom, m_hZoom, m_blit10, data, m_vPosition, m_hPosition);
m_colorNumber = machine().rand() | 0xff000000;
random = 1;
}
else
{
}
bitmap_rgb32* drawbitmap;
// SPRITES / BLITS
// 0x30 - 0x60 are definitely the left screen, 0x90 - 0xc0 are definitely the right screen.. the modes seem priority related
if (m_blitterMode == 0x30 || m_blitterMode == 0x40 || m_blitterMode == 0x50 || m_blitterMode == 0x60)
drawbitmap = &m_temp_bitmap_sprites;
else // 0x90, 0xa0, 0xb0, 0xc0
drawbitmap = &m_temp_bitmap_sprites2;
// for text objects this is an address containing the 8-bit tile numbers to use for ASCII text
// I guess the tiles are decoded by a DMA operation earlier, from the compressed ROM?
int sizex = m_hCellCount * 16 * m_hZoom;
int sizey = m_vCellCount * 16 * m_vZoom;
m_hPosition *= 0x40;
m_vPosition *= 0x40;
// we also use this to trigger the actual draw operation
switch (m_vOrigin & 3)
{
case 0:
// top
break;
case 1:
m_vPosition -= sizey / 2 ;
// middle?
break;
case 2:
m_vPosition -= sizey;
// bottom?
break;
case 3:
// invalid?
break;
}
//printf("blit %08x\n", data);
// debug, hide objects without m_blit10 set
//if (m_blit10==0) return;
//if (m_blit0==0) return;
switch (m_hOrigin & 3)
{
case 0:
// left
break;
case 1:
m_hPosition -= sizex / 2;
// middle?
break;
case 2:
m_hPosition -= sizex;
// right?
break;
case 3:
// invalid?
break;
}
// Splat some sprites
for (int h = 0; h < m_hCellCount; h++)
{
for (int v = 0; v < m_vCellCount; v++)
//if (m_blit10!=0)
if (m_indirect_zoom_enable)
{
const int pixelOffsetX = ((m_hPosition) + (h* 16 * m_hZoom)) / 0x40;
const int pixelOffsetY = ((m_vPosition) + (v* 16 * m_vZoom)) / 0x40;
// with this bit enabled m_blit10 is a look up to the zoom(?) value eg. 03f42600
//UINT32 temp = space.read_dword(m_blit10);
//printf("road type blit %08x %08x %08x %08x %08x(%08x) %08x %04x %04x %04x %04x %08x %08x (TEMP %08x) %d %d\n", m_blit0, m_blit1, m_blit2, m_blit3, m_blit4_unused, m_blit4, m_blit5_unused, m_vCellCount, m_hCellCount, m_vZoom, m_hZoom, m_blit10, data, temp, m_vPosition, m_hPosition);
/* for the horizontal road during attract there are tables 0x480 bytes long (0x120 dwords) and the value passed points to the start of them */
/* cell sizes for those are are 0011 (v) 0007 (h) with zoom factors of 0020 (half v) 0040 (normal h) */
/* tables seem to be 2x 8-bit values, possibly zoom + linescroll, although ingame ones seem to be 2x16-bit (corrupt? more meaning) */
// It's unknown if it's row-major or column-major
// TODO: Study the CRT test and "Cool Riders" logo for clues.
UINT8 spriteNumber = 0;
}
// with this bit enabled the tile numbers gets looked up using 'data' (which would be m_blit11) (eg 03f40000 for startup text)
// this allows text strings to be written as 8-bit ascii in one area (using command 0x10), and drawn using multi-width sprites
if (m_indirect_tile_enable)
int random;
random = 0;
// not used much..
/*
if (m_blit4 &0x00010000)
{
printf("type blit %08x %08x %08x %08x %08x(%08x) %08x %04x %04x %04x %04x %08x %08x %d %d\n", m_blit0, m_blit1, m_blit2, m_blit3, m_blit4_unused, m_blit4, m_blit5_unused, m_vCellCount, m_hCellCount, m_vZoom, m_hZoom, m_blit10, data, m_vPosition, m_hPosition);
m_colorNumber = machine().rand() | 0xff000000;
random = 1;
}
else
{
}
*/
bitmap_rgb32* drawbitmap;
// 0x30 - 0x60 are definitely the left screen, 0x90 - 0xc0 are definitely the right screen.. the modes seem priority related
if (m_blitterMode == 0x30 || m_blitterMode == 0x40 || m_blitterMode == 0x50 || m_blitterMode == 0x60)
drawbitmap = &m_temp_bitmap_sprites;
else // 0x90, 0xa0, 0xb0, 0xc0
drawbitmap = &m_temp_bitmap_sprites2;
int sizex = m_hCellCount * 16 * m_hZoom;
int sizey = m_vCellCount * 16 * m_vZoom;
m_hPosition *= 0x40;
m_vPosition *= 0x40;
switch (m_vOrigin & 3)
{
case 0:
// top
break;
case 1:
m_vPosition -= sizey / 2 ;
// middle?
break;
case 2:
m_vPosition -= sizey;
// bottom?
break;
case 3:
// invalid?
break;
}
switch (m_hOrigin & 3)
{
case 0:
// left
break;
case 1:
m_hPosition -= sizex / 2;
// middle?
break;
case 2:
m_hPosition -= sizex;
// right?
break;
case 3:
// invalid?
break;
}
// Splat some sprites
for (int h = 0; h < m_hCellCount; h++)
{
for (int v = 0; v < m_vCellCount; v++)
{
const UINT32 memOffset = data;
spriteNumber = space.read_byte(memOffset + h + (v*h));
const int pixelOffsetX = ((m_hPosition) + (h* 16 * m_hZoom)) / 0x40;
const int pixelOffsetY = ((m_vPosition) + (v* 16 * m_vZoom)) / 0x40;
// DEBUG: For demo purposes, skip &spaces and NULL characters
if (spriteNumber == 0x20 || spriteNumber == 0x00)
continue;
#ifdef FAKE_ASCII_ROM
drawgfx_opaque(*drawbitmap,drawbitmap->cliprect(), machine().gfx[3],spriteNumber,0,0,0,pixelOffsetX,pixelOffsetY);
continue;
#endif
}
// It's unknown if it's row-major or column-major
// TODO: Study the CRT test and "Cool Riders" logo for clues.
UINT8 spriteNumber = 0;
int blockwide = ((16*m_hZoom)/0x40)-1;
int blockhigh = ((16*m_vZoom)/0x40)-1;
// hack
if (blockwide<=0) blockwide = 1;
if (blockhigh<=0) blockhigh = 1;
UINT32 color = 0xffffffff;
// HACKS to draw coloured blocks in easy to distinguish colours
if (m_blitterMode == 0x30 || m_blitterMode == 0x90)
{
if (m_colorNumber == 0x5b)
color = 0xffff0000;
else if (m_colorNumber == 0x5d)
color = 0xff00ff00;
else if (m_colorNumber == 0x5e)
color = 0xff0000ff;
else
color = 0xff00ffff;
}
else if (m_blitterMode == 0x40 || m_blitterMode == 0xa0)
{
color = 0xff000000 | (((m_colorNumber & 0xff) | 0x80)-0x40);
}
else if (m_blitterMode == 0x50 || m_blitterMode == 0xb0)
{
color = 0xff000000 | ((((m_colorNumber & 0xff) | 0x80)-0x40) << 8);
}
else if (m_blitterMode == 0x60 || m_blitterMode == 0xc0)
{
color = 0xff000000 | ((((m_colorNumber & 0xff) | 0x80)-0x40) << 16);
}
if (random == 1)
color = m_colorNumber;
// DEBUG: Draw 16x16 block
for (int y = 0; y < blockhigh; y++)
{
int drawy = pixelOffsetY+y;
if ((drawy>383) || (drawy<0)) continue;
for (int x = 0; x < blockwide; x++)
// with this bit enabled the tile numbers gets looked up using 'data' (which would be m_blit11) (eg 03f40000 for startup text)
// this allows text strings to be written as 8-bit ascii in one area (using command 0x10), and drawn using multi-width sprites
if (m_indirect_tile_enable)
{
int drawx = pixelOffsetX+x;
if ((drawx>=495 || drawx<0)) continue;
const UINT32 memOffset = data;
spriteNumber = space.read_byte(memOffset + h + (v*h));
if (drawbitmap->pix32(drawy,drawx)==0) drawbitmap->pix32(drawy, drawx) = color;
// DEBUG: For demo purposes, skip &spaces and NULL characters
if (spriteNumber == 0x20 || spriteNumber == 0x00)
continue;
#ifdef FAKE_ASCII_ROM
drawgfx_opaque(*drawbitmap,drawbitmap->cliprect(), machine().gfx[3],spriteNumber,0,0,0,pixelOffsetX,pixelOffsetY);
continue;
#endif
}
int blockwide = ((16*m_hZoom)/0x40)-1;
int blockhigh = ((16*m_vZoom)/0x40)-1;
// hack
if (blockwide<=0) blockwide = 1;
if (blockhigh<=0) blockhigh = 1;
UINT32 color = 0xffffffff;
// HACKS to draw coloured blocks in easy to distinguish colours
if (m_blitterMode == 0x30 || m_blitterMode == 0x90)
{
if (m_colorNumber == 0x5b)
color = 0xffff0000;
else if (m_colorNumber == 0x5d)
color = 0xff00ff00;
else if (m_colorNumber == 0x5e)
color = 0xff0000ff;
else
color = 0xff00ffff;
}
else if (m_blitterMode == 0x40 || m_blitterMode == 0xa0)
{
color = 0xff000000 | (((m_colorNumber & 0xff) | 0x80)-0x40);
}
else if (m_blitterMode == 0x50 || m_blitterMode == 0xb0)
{
color = 0xff000000 | ((((m_colorNumber & 0xff) | 0x80)-0x40) << 8);
}
else if (m_blitterMode == 0x60 || m_blitterMode == 0xc0)
{
color = 0xff000000 | ((((m_colorNumber & 0xff) | 0x80)-0x40) << 16);
}
if (random == 1)
color = m_colorNumber;
// DEBUG: Draw 16x16 block
for (int y = 0; y < blockhigh; y++)
{
int drawy = pixelOffsetY+y;
if ((drawy>383) || (drawy<0)) continue;
for (int x = 0; x < blockwide; x++)
{
int drawx = pixelOffsetX+x;
if ((drawx>=495 || drawx<0)) continue;
if (drawbitmap->pix32(drawy,drawx)==0) drawbitmap->pix32(drawy, drawx) = color;
}
}
}
}