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https://github.com/holub/mame
synced 2025-04-27 10:43:07 +03:00
document 'blits' where the first sent parameter is '1' not '0' as non-sprites, probably clipping windows.
This commit is contained in:
David Haywood
parent
103494349b
commit
1ef9da1b98
@ -692,7 +692,7 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
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|| m_blitterMode == 0x90 || m_blitterMode == 0xa0 || m_blitterMode == 0xb0 || m_blitterMode == 0xc0)
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|| m_blitterMode == 0x90 || m_blitterMode == 0xa0 || m_blitterMode == 0xb0 || m_blitterMode == 0xc0)
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{
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{
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// Serialized 32-bit words in order of appearance:
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// Serialized 32-bit words in order of appearance:
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// 0: 00000000 - totally unknown : always seems to be zero
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// 0: 00000000 - unknown, 0x00000000 or 0x00000001, 0 seems to be regular sprite, 1 seems to change meaning of below, possible clip area?
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// 1: xxxxxxxx - "Color Number" (all bits or just lower 16/8?)
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// 1: xxxxxxxx - "Color Number" (all bits or just lower 16/8?)
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// 2: 00000000 - unknown : OT flag? (transparency)
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// 2: 00000000 - unknown : OT flag? (transparency)
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// 3: 00000000 - unknown : RF flag? (90 degree rotation)
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// 3: 00000000 - unknown : RF flag? (90 degree rotation)
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@ -717,7 +717,16 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
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{
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{
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// set to 0x00000001 on some objects during the 'film strip' part of attract, otherwise 0
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// set to 0x00000001 on some objects during the 'film strip' part of attract, otherwise 0
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// those objects don't seem visible anyway so might have some special meaning
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// those objects don't seem visible anyway so might have some special meaning
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// this is also set at times during the game
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//
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// the sprites with 1 set appear to have 0x00000000 in everything after the 4th write (m_blit4 and above)
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// so likely have some other meaning and are NOT regular sprite data
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m_blit0 = data;
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m_blit0 = data;
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// if (data!=0) printf("blit %08x\n", data);
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// if (data!=0) printf("blit %08x\n", data);
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}
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}
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else if (m_blitterSerialCount == 1)
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else if (m_blitterSerialCount == 1)
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@ -807,173 +816,189 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
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}
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}
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else if (m_blitterSerialCount == 11)
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else if (m_blitterSerialCount == 11)
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{
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{
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// for text objects this is an address containing the 8-bit tile numbers to use for ASCII text
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if (m_blit0 & 1)
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// I guess the tiles are decoded by a DMA operation earlier, from the compressed ROM?
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// we also use this to trigger the actual draw operation
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//printf("blit %08x\n", data);
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// debug, hide objects without m_blit10 set
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//if (m_blit10==0) return;
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//if (m_blit0==0) return;
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//if (m_blit10!=0)
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if (m_indirect_zoom_enable)
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{
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{
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// with this bit enabled m_blit10 is a look up to the zoom(?) value eg. 03f42600
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// NOT A SPRITE
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//UINT32 temp = space.read_dword(m_blit10);
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//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);
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/* for the horizontal road during attract there are tables 0x480 bytes long (0x120 dwords) and the value passed points to the start of them */
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// these are something else, not sprites? It still writes 11 dwords I think they have a different meaning
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/* cell sizes for those are are 0011 (v) 0007 (h) with zoom factors of 0020 (half v) 0040 (normal h) */
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// it might be a clipping area set? looks potentially like co-ordinates at least
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/* tables seem to be 2x 8-bit values, possibly zoom + linescroll, although ingame ones seem to be 2x16-bit (corrupt? more meaning) */
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//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);
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}
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}
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int random;
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random = 0;
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// not used much..
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if (m_blit4 &0x00010000)
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{
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// 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);
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m_colorNumber = machine().rand() | 0xff000000;
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random = 1;
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}
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else
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else
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{
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{
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// SPRITES / BLITS
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}
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// for text objects this is an address containing the 8-bit tile numbers to use for ASCII text
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// I guess the tiles are decoded by a DMA operation earlier, from the compressed ROM?
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bitmap_rgb32* drawbitmap;
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// we also use this to trigger the actual draw operation
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// 0x30 - 0x60 are definitely the left screen, 0x90 - 0xc0 are definitely the right screen.. the modes seem priority related
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//printf("blit %08x\n", data);
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if (m_blitterMode == 0x30 || m_blitterMode == 0x40 || m_blitterMode == 0x50 || m_blitterMode == 0x60)
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drawbitmap = &m_temp_bitmap_sprites;
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else // 0x90, 0xa0, 0xb0, 0xc0
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drawbitmap = &m_temp_bitmap_sprites2;
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int sizex = m_hCellCount * 16 * m_hZoom;
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// debug, hide objects without m_blit10 set
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int sizey = m_vCellCount * 16 * m_vZoom;
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//if (m_blit10==0) return;
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m_hPosition *= 0x40;
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//if (m_blit0==0) return;
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m_vPosition *= 0x40;
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switch (m_vOrigin & 3)
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//if (m_blit10!=0)
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{
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if (m_indirect_zoom_enable)
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case 0:
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// top
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break;
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case 1:
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m_vPosition -= sizey / 2 ;
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// middle?
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break;
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case 2:
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m_vPosition -= sizey;
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// bottom?
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break;
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case 3:
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// invalid?
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break;
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}
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switch (m_hOrigin & 3)
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{
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case 0:
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// left
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break;
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case 1:
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m_hPosition -= sizex / 2;
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// middle?
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break;
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case 2:
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m_hPosition -= sizex;
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// right?
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break;
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case 3:
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// invalid?
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break;
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}
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// Splat some sprites
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for (int h = 0; h < m_hCellCount; h++)
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{
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for (int v = 0; v < m_vCellCount; v++)
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{
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{
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const int pixelOffsetX = ((m_hPosition) + (h* 16 * m_hZoom)) / 0x40;
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// with this bit enabled m_blit10 is a look up to the zoom(?) value eg. 03f42600
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const int pixelOffsetY = ((m_vPosition) + (v* 16 * m_vZoom)) / 0x40;
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//UINT32 temp = space.read_dword(m_blit10);
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//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);
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// It's unknown if it's row-major or column-major
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/* for the horizontal road during attract there are tables 0x480 bytes long (0x120 dwords) and the value passed points to the start of them */
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// TODO: Study the CRT test and "Cool Riders" logo for clues.
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/* cell sizes for those are are 0011 (v) 0007 (h) with zoom factors of 0020 (half v) 0040 (normal h) */
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UINT8 spriteNumber = 0;
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/* tables seem to be 2x 8-bit values, possibly zoom + linescroll, although ingame ones seem to be 2x16-bit (corrupt? more meaning) */
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// with this bit enabled the tile numbers gets looked up using 'data' (which would be m_blit11) (eg 03f40000 for startup text)
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}
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// this allows text strings to be written as 8-bit ascii in one area (using command 0x10), and drawn using multi-width sprites
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if (m_indirect_tile_enable)
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int random;
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random = 0;
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// not used much..
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/*
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if (m_blit4 &0x00010000)
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{
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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);
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m_colorNumber = machine().rand() | 0xff000000;
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random = 1;
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}
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else
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{
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}
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*/
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bitmap_rgb32* drawbitmap;
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// 0x30 - 0x60 are definitely the left screen, 0x90 - 0xc0 are definitely the right screen.. the modes seem priority related
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if (m_blitterMode == 0x30 || m_blitterMode == 0x40 || m_blitterMode == 0x50 || m_blitterMode == 0x60)
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drawbitmap = &m_temp_bitmap_sprites;
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else // 0x90, 0xa0, 0xb0, 0xc0
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drawbitmap = &m_temp_bitmap_sprites2;
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int sizex = m_hCellCount * 16 * m_hZoom;
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int sizey = m_vCellCount * 16 * m_vZoom;
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m_hPosition *= 0x40;
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m_vPosition *= 0x40;
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switch (m_vOrigin & 3)
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{
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case 0:
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// top
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break;
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case 1:
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m_vPosition -= sizey / 2 ;
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// middle?
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break;
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case 2:
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m_vPosition -= sizey;
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// bottom?
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break;
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case 3:
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// invalid?
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break;
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}
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switch (m_hOrigin & 3)
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{
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case 0:
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// left
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break;
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case 1:
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m_hPosition -= sizex / 2;
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// middle?
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break;
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case 2:
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m_hPosition -= sizex;
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// right?
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break;
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case 3:
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// invalid?
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break;
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}
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// Splat some sprites
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for (int h = 0; h < m_hCellCount; h++)
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{
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for (int v = 0; v < m_vCellCount; v++)
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{
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{
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const UINT32 memOffset = data;
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const int pixelOffsetX = ((m_hPosition) + (h* 16 * m_hZoom)) / 0x40;
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spriteNumber = space.read_byte(memOffset + h + (v*h));
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const int pixelOffsetY = ((m_vPosition) + (v* 16 * m_vZoom)) / 0x40;
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// DEBUG: For demo purposes, skip &spaces and NULL characters
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// It's unknown if it's row-major or column-major
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if (spriteNumber == 0x20 || spriteNumber == 0x00)
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// TODO: Study the CRT test and "Cool Riders" logo for clues.
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continue;
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UINT8 spriteNumber = 0;
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#ifdef FAKE_ASCII_ROM
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drawgfx_opaque(*drawbitmap,drawbitmap->cliprect(), machine().gfx[3],spriteNumber,0,0,0,pixelOffsetX,pixelOffsetY);
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continue;
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#endif
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}
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// with this bit enabled the tile numbers gets looked up using 'data' (which would be m_blit11) (eg 03f40000 for startup text)
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int blockwide = ((16*m_hZoom)/0x40)-1;
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// this allows text strings to be written as 8-bit ascii in one area (using command 0x10), and drawn using multi-width sprites
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int blockhigh = ((16*m_vZoom)/0x40)-1;
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if (m_indirect_tile_enable)
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// hack
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if (blockwide<=0) blockwide = 1;
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if (blockhigh<=0) blockhigh = 1;
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UINT32 color = 0xffffffff;
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// HACKS to draw coloured blocks in easy to distinguish colours
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if (m_blitterMode == 0x30 || m_blitterMode == 0x90)
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{
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if (m_colorNumber == 0x5b)
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color = 0xffff0000;
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else if (m_colorNumber == 0x5d)
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color = 0xff00ff00;
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else if (m_colorNumber == 0x5e)
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color = 0xff0000ff;
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else
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color = 0xff00ffff;
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}
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else if (m_blitterMode == 0x40 || m_blitterMode == 0xa0)
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{
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color = 0xff000000 | (((m_colorNumber & 0xff) | 0x80)-0x40);
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}
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else if (m_blitterMode == 0x50 || m_blitterMode == 0xb0)
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{
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color = 0xff000000 | ((((m_colorNumber & 0xff) | 0x80)-0x40) << 8);
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}
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else if (m_blitterMode == 0x60 || m_blitterMode == 0xc0)
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{
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color = 0xff000000 | ((((m_colorNumber & 0xff) | 0x80)-0x40) << 16);
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}
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if (random == 1)
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color = m_colorNumber;
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// DEBUG: Draw 16x16 block
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for (int y = 0; y < blockhigh; y++)
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{
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int drawy = pixelOffsetY+y;
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if ((drawy>383) || (drawy<0)) continue;
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for (int x = 0; x < blockwide; x++)
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{
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{
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int drawx = pixelOffsetX+x;
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const UINT32 memOffset = data;
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if ((drawx>=495 || drawx<0)) continue;
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spriteNumber = space.read_byte(memOffset + h + (v*h));
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if (drawbitmap->pix32(drawy,drawx)==0) drawbitmap->pix32(drawy, drawx) = color;
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// DEBUG: For demo purposes, skip &spaces and NULL characters
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if (spriteNumber == 0x20 || spriteNumber == 0x00)
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continue;
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#ifdef FAKE_ASCII_ROM
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drawgfx_opaque(*drawbitmap,drawbitmap->cliprect(), machine().gfx[3],spriteNumber,0,0,0,pixelOffsetX,pixelOffsetY);
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continue;
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#endif
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}
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int blockwide = ((16*m_hZoom)/0x40)-1;
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int blockhigh = ((16*m_vZoom)/0x40)-1;
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// hack
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if (blockwide<=0) blockwide = 1;
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if (blockhigh<=0) blockhigh = 1;
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UINT32 color = 0xffffffff;
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// HACKS to draw coloured blocks in easy to distinguish colours
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if (m_blitterMode == 0x30 || m_blitterMode == 0x90)
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{
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if (m_colorNumber == 0x5b)
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color = 0xffff0000;
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else if (m_colorNumber == 0x5d)
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color = 0xff00ff00;
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else if (m_colorNumber == 0x5e)
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color = 0xff0000ff;
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else
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color = 0xff00ffff;
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}
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else if (m_blitterMode == 0x40 || m_blitterMode == 0xa0)
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{
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color = 0xff000000 | (((m_colorNumber & 0xff) | 0x80)-0x40);
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}
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else if (m_blitterMode == 0x50 || m_blitterMode == 0xb0)
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{
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color = 0xff000000 | ((((m_colorNumber & 0xff) | 0x80)-0x40) << 8);
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}
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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;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user