mirror of
https://github.com/holub/mame
synced 2025-07-03 00:56:03 +03:00
Draws background directly from memory avoiding having to decode the gfx repeadately.
This commit is contained in:
Zsolt Vasvari
parent
07c3aaafa8
commit
84a74dfcaa
@ -189,7 +189,7 @@ static WRITE8_HANDLER( fax_bank_select_w )
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static ADDRESS_MAP_START( common_map, ADDRESS_SPACE_PROGRAM, 8 )
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AM_RANGE(0x0000, 0x03ff) AM_RAM
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AM_RANGE(0x4000, 0x43ff) AM_MIRROR(0x0400) AM_RAM AM_BASE(&videoram) AM_SIZE(&videoram_size)
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AM_RANGE(0x4000, 0x43ff) AM_MIRROR(0x0400) AM_RAM AM_BASE(&exidy_videoram)
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AM_RANGE(0x5000, 0x503f) AM_WRITE(exidy_sprite1_xpos_w)
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AM_RANGE(0x5040, 0x507f) AM_WRITE(exidy_sprite1_ypos_w)
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AM_RANGE(0x5080, 0x50bf) AM_WRITE(exidy_sprite2_xpos_w)
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@ -746,28 +746,6 @@ INPUT_PORTS_END
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*
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*************************************/
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static const gfx_layout charlayout_1bpp =
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{
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8,8,
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256,
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1,
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{ 0 },
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{ STEP8(0,1) },
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{ STEP8(0,8) },
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8*8
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};
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static const gfx_layout charlayout_2bpp =
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{
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8,8,
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256,
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2,
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{ 0, 256*8*8 },
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{ STEP8(0,1) },
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{ STEP8(0,8) },
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8*8
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};
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static const gfx_layout spritelayout =
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{
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16,16,
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@ -780,14 +758,7 @@ static const gfx_layout spritelayout =
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};
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static GFXDECODE_START( 1bpp )
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GFXDECODE_ENTRY( REGION_CPU1, 0x4800, charlayout_1bpp, 4, 4 ) /* the game dynamically modifies this */
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GFXDECODE_ENTRY( REGION_GFX1, 0x0000, spritelayout, 0, 2 )
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GFXDECODE_END
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static GFXDECODE_START( 2bpp )
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GFXDECODE_ENTRY( REGION_CPU1, 0x6000, charlayout_2bpp, 4, 4 ) /* the game dynamically modifies this */
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static GFXDECODE_START( exidy )
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GFXDECODE_ENTRY( REGION_GFX1, 0x0000, spritelayout, 0, 2 )
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GFXDECODE_END
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@ -843,8 +814,8 @@ static MACHINE_DRIVER_START( sidetrac )
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MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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MDRV_SCREEN_RAW_PARAMS(EXIDY_PIXEL_CLOCK, EXIDY_HTOTAL, EXIDY_HBEND, EXIDY_HBSTART, EXIDY_VTOTAL, EXIDY_VBEND, EXIDY_VBSTART)
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MDRV_GFXDECODE(1bpp)
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MDRV_PALETTE_LENGTH(2*2 + 4*2)
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MDRV_GFXDECODE(exidy)
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MDRV_PALETTE_LENGTH(8)
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MDRV_VIDEO_START(exidy)
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MDRV_VIDEO_EOF(exidy)
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@ -925,10 +896,6 @@ static MACHINE_DRIVER_START( pepper2 )
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MDRV_IMPORT_FROM(venture)
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MDRV_CPU_MODIFY("main")
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MDRV_CPU_PROGRAM_MAP(common_map,pepper2_map)
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/* video hardware */
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MDRV_GFXDECODE(2bpp)
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MDRV_PALETTE_LENGTH(2*2 + 4*4)
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MACHINE_DRIVER_END
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@ -1357,17 +1324,10 @@ ROM_END
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*
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*************************************/
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static void exidy_common_init(UINT8 cmask, UINT8 cinvert)
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{
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exidy_collision_mask = cmask;
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exidy_collision_invert = cinvert;
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targ_spec_flag = 0;
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}
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static DRIVER_INIT( sidetrac )
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{
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exidy_common_init(0x00, 0x00);
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exidy_video_config(0x00, 0x00, FALSE);
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targ_spec_flag = 0;
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/* hard-coded palette controlled via 8x3 DIP switches on the board */
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exidy_color_latch[2] = 0xf8;
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@ -1378,20 +1338,20 @@ static DRIVER_INIT( sidetrac )
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static DRIVER_INIT( targ )
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{
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exidy_common_init(0x00, 0x00);
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exidy_video_config(0x00, 0x00, FALSE);
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targ_spec_flag = 1;
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/* hard-coded palette controlled via 8x3 DIP switches on the board */
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exidy_color_latch[2] = 0x5c;
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exidy_color_latch[1] = 0xee;
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exidy_color_latch[0] = 0x6b;
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targ_spec_flag = 1;
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}
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static DRIVER_INIT( spectar )
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{
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exidy_common_init(0x00, 0x00);
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exidy_video_config(0x00, 0x00, FALSE);
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targ_spec_flag = 0;
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/* hard-coded palette controlled via 8x3 DIP switches on the board */
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exidy_color_latch[2] = 0x58;
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@ -1401,7 +1361,8 @@ static DRIVER_INIT( spectar )
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static DRIVER_INIT( rallys )
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{
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exidy_common_init(0x00, 0x00);
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exidy_video_config(0x00, 0x00, FALSE);
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targ_spec_flag = 0;
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/* hard-coded palette controlled via 8x3 DIP switches on the board */
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exidy_color_latch[2] = 0x58;
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@ -1417,7 +1378,8 @@ static DRIVER_INIT( rallys )
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static DRIVER_INIT( phantoma )
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{
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exidy_common_init(0x00, 0x00);
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exidy_video_config(0x00, 0x00, FALSE);
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targ_spec_flag = 0;
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/* hard-coded palette controlled via 8x3 DIP switches on the board */
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exidy_color_latch[2] = 0x58;
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@ -1438,19 +1400,22 @@ static DRIVER_INIT( phantoma )
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static DRIVER_INIT( mtrap )
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{
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exidy_common_init(0x14, 0x00);
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exidy_video_config(0x14, 0x00, FALSE);
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targ_spec_flag = 0;
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}
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static DRIVER_INIT( venture )
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{
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exidy_common_init(0x04, 0x04);
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exidy_video_config(0x04, 0x04, FALSE);
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targ_spec_flag = 0;
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}
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static DRIVER_INIT( teetert )
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{
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exidy_common_init(0x0c, 0x0c);
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exidy_video_config(0x0c, 0x0c, FALSE);
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targ_spec_flag = 0;
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/* special input handler for the dial */
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memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0x5101, 0x5101, 0, 0, teetert_input_r);
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@ -1459,7 +1424,8 @@ static DRIVER_INIT( teetert )
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static DRIVER_INIT( pepper2 )
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{
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exidy_common_init(0x14, 0x04);
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exidy_video_config(0x14, 0x04, TRUE);
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targ_spec_flag = 0;
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/* two 6116 character RAMs */
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exidy_characterram = memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0x6000, 0x6fff, 0, 0, MRA8_RAM);
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@ -1471,7 +1437,8 @@ static DRIVER_INIT( pepper2 )
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static DRIVER_INIT( fax )
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{
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exidy_common_init(0x04, 0x04);
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exidy_video_config(0x04, 0x04, TRUE);
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targ_spec_flag = 0;
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/* reset the ROM bank */
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fax_bank_select_w(0,0);
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@ -52,13 +52,12 @@ WRITE8_HANDLER( targ_sh_w );
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/*----------- defined in video/exidy.c -----------*/
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extern UINT8 *exidy_videoram;
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extern UINT8 *exidy_characterram;
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extern UINT8 exidy_collision_mask;
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extern UINT8 exidy_collision_invert;
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extern UINT8 *exidy_color_latch;
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void exidy_video_config(UINT8 _collision_mask, UINT8 _collision_invert, int _is_2bpp);
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VIDEO_START( exidy );
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VIDEO_EOF( exidy );
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VIDEO_UPDATE( exidy );
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@ -7,12 +7,16 @@
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#include "driver.h"
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#include "exidy.h"
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UINT8 *exidy_videoram;
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UINT8 *exidy_characterram;
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UINT8 *exidy_color_latch;
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UINT8 exidy_collision_mask;
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UINT8 exidy_collision_invert;
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static UINT8 collision_mask;
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static UINT8 collision_invert;
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static int is_2bpp;
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static mame_bitmap *background_bitmap;
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static mame_bitmap *motion_object_1_vid;
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static mame_bitmap *motion_object_2_vid;
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static mame_bitmap *motion_object_2_clip;
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@ -30,6 +34,21 @@ static UINT8 sprite2_ypos;
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/*************************************
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*
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* Video configuration
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*
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*************************************/
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void exidy_video_config(UINT8 _collision_mask, UINT8 _collision_invert, int _is_2bpp)
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{
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collision_mask = _collision_mask;
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collision_invert = _collision_invert;
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is_2bpp = _is_2bpp;
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}
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/*************************************
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*
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* Video startup
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@ -38,8 +57,7 @@ static UINT8 sprite2_ypos;
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VIDEO_START( exidy )
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{
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video_start_generic(machine);
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background_bitmap = auto_bitmap_alloc(machine->screen[0].width, machine->screen[0].height, machine->screen[0].format);
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motion_object_1_vid = auto_bitmap_alloc(16, 16, machine->screen[0].format);
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motion_object_2_vid = auto_bitmap_alloc(16, 16, machine->screen[0].format);
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motion_object_2_clip = auto_bitmap_alloc(16, 16, machine->screen[0].format);
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@ -55,8 +73,8 @@ VIDEO_START( exidy )
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INLINE void latch_condition(int collision)
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{
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collision ^= exidy_collision_invert;
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int_condition = (readinputportbytag("INTSOURCE") & ~0x1c) | (collision & exidy_collision_mask);
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collision ^= collision_invert;
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int_condition = (readinputportbytag("INTSOURCE") & ~0x1c) | (collision & collision_mask);
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}
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@ -99,9 +117,12 @@ READ8_HANDLER( exidy_interrupt_r )
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*
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*************************************/
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INLINE void set_1_color(running_machine *machine, int index, int palette)
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INLINE void set_1_color(running_machine *machine, int index, int which)
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{
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palette_set_color_rgb(machine, index, pal1bit(exidy_color_latch[2] >> palette), pal1bit(exidy_color_latch[1] >> palette), pal1bit(exidy_color_latch[0] >> palette));
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palette_set_color_rgb(machine, index,
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pal1bit(exidy_color_latch[2] >> which),
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pal1bit(exidy_color_latch[1] >> which),
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pal1bit(exidy_color_latch[0] >> which));
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}
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static void set_colors(running_machine *machine)
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@ -114,39 +135,11 @@ static void set_colors(running_machine *machine)
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set_1_color(machine, 2, 0);
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set_1_color(machine, 3, 6);
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/* one-bit characters */
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if (machine->gfx[0]->color_granularity == 2)
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{
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set_1_color(machine, 4, 0); /* chars 0x00-0x3F */
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set_1_color(machine, 5, 4);
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set_1_color(machine, 6, 0); /* chars 0x40-0x7F */
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set_1_color(machine, 7, 3);
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set_1_color(machine, 8, 0); /* chars 0x80-0xBF */
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set_1_color(machine, 9, 2);
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set_1_color(machine, 10, 0); /* chars 0xC0-0xFF */
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set_1_color(machine, 11, 1);
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}
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/* two-bit characters */
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else
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{
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set_1_color(machine, 4, 0); /* chars 0x00-0x3F */
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set_1_color(machine, 5, 0);
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set_1_color(machine, 6, 4);
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set_1_color(machine, 7, 3);
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set_1_color(machine, 8, 0); /* chars 0x40-0x7F */
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set_1_color(machine, 9, 0);
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set_1_color(machine, 10, 4);
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set_1_color(machine, 11, 3);
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set_1_color(machine, 12, 0); /* chars 0x80-0xBF */
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set_1_color(machine, 13, 0);
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set_1_color(machine, 14, 2);
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set_1_color(machine, 15, 1);
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set_1_color(machine, 16, 0); /* chars 0xC0-0xFF */
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set_1_color(machine, 17, 0);
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set_1_color(machine, 18, 2);
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set_1_color(machine, 19, 1);
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}
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/* characters */
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set_1_color(machine, 4, 4);
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set_1_color(machine, 5, 3);
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set_1_color(machine, 6, 2);
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set_1_color(machine, 7, 1);
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}
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@ -195,27 +188,70 @@ WRITE8_HANDLER( exidy_sprite_enable_w )
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*
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*************************************/
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static void update_background(running_machine *machine)
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static void draw_background(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect)
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{
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int x, y, code, offs;
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offs_t offs;
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/* decode chars */
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const gfx_layout *gfx = machine->drv->gfxdecodeinfo[0].gfxlayout;
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pen_t off_pen = 0;
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for (code = 0; code < gfx->total; code++)
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decodechar(machine->gfx[0], code, exidy_characterram, gfx);
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for (offs = 0; offs < 0x400; offs++)
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{
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UINT8 cy;
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pen_t on_pen_1, on_pen_2;
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/* update the background */
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for (y = offs = 0; y < 32; y++)
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for (x = 0; x < 32; x++, offs++)
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UINT8 y = offs >> 5 << 3;
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UINT8 code = exidy_videoram[offs];
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if (is_2bpp)
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{
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int color;
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code = videoram[offs];
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color = code >> 6;
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drawgfx(tmpbitmap, machine->gfx[0], code, color, 0, 0, x * 8, y * 8, NULL, TRANSPARENCY_NONE, 0);
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on_pen_1 = 4 + ((code >> 6) & 0x02);
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on_pen_2 = 5 + ((code >> 6) & 0x02);
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}
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else
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{
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on_pen_1 = 4 + ((code >> 6) & 0x03);
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on_pen_2 = off_pen; /* unused */
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}
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for (cy = 0; cy < 8; cy++)
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{
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int i;
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UINT8 x = offs << 3;
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if (is_2bpp)
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{
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UINT8 data1 = exidy_characterram[0x000 | (code << 3) | cy];
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UINT8 data2 = exidy_characterram[0x800 | (code << 3) | cy];
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for (i = 0; i < 8; i++)
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{
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if (data1 & 0x80)
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*BITMAP_ADDR16(bitmap, y, x) = (data2 & 0x80) ? on_pen_2 : on_pen_1;
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else
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*BITMAP_ADDR16(bitmap, y, x) = off_pen;
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x = x + 1;
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data1 = data1 << 1;
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data2 = data2 << 1;
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}
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}
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/* 1bpp */
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else
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{
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UINT8 data = exidy_characterram[(code << 3) | cy];
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for (i = 0; i < 8; i++)
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{
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*BITMAP_ADDR16(bitmap, y, x) = (data & 0x80) ? on_pen_1 : off_pen;
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x = x + 1;
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data = data << 1;
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}
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}
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y = y + 1;
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}
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}
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}
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@ -251,9 +287,9 @@ static TIMER_CALLBACK( collision_irq_callback )
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INLINE int sprite_1_enabled(void)
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{
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/* if the exidy_collision_mask is 0x00, then we are on old hardware that always has */
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/* if the collision_mask is 0x00, then we are on old hardware that always has */
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/* sprite 1 enabled regardless */
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return (!(sprite_enable & 0x80) || (sprite_enable & 0x10) || (exidy_collision_mask == 0x00));
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return (!(sprite_enable & 0x80) || (sprite_enable & 0x10) || (collision_mask == 0x00));
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}
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VIDEO_EOF( exidy )
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@ -268,12 +304,12 @@ VIDEO_EOF( exidy )
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int count = 0;
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/* if there is nothing to detect, bail */
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if (exidy_collision_mask == 0)
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if (collision_mask == 0)
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return;
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/* update the background if necessary */
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if (!update_complete)
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update_background(machine);
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draw_background(machine, background_bitmap, NULL);
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update_complete = 0;
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/* draw sprite 1 */
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@ -282,7 +318,7 @@ VIDEO_EOF( exidy )
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||||
{
|
||||
org_1_x = 236 - sprite1_xpos - 4;
|
||||
org_1_y = 244 - sprite1_ypos - 4;
|
||||
drawgfx(motion_object_1_vid, machine->gfx[1],
|
||||
drawgfx(motion_object_1_vid, machine->gfx[0],
|
||||
(spriteno & 0x0f) + 16 * enable_set_1, 0,
|
||||
0, 0, 0, 0, &clip, TRANSPARENCY_PEN, 0);
|
||||
}
|
||||
@ -291,7 +327,7 @@ VIDEO_EOF( exidy )
|
||||
fillbitmap(motion_object_2_vid, 0xff, &clip);
|
||||
org_2_x = 236 - sprite2_xpos - 4;
|
||||
org_2_y = 244 - sprite2_ypos - 4;
|
||||
drawgfx(motion_object_2_vid, machine->gfx[1],
|
||||
drawgfx(motion_object_2_vid, machine->gfx[0],
|
||||
((spriteno >> 4) & 0x0f) + 32 + 16 * enable_set_2, 0,
|
||||
0, 0, 0, 0, &clip, TRANSPARENCY_PEN, 0);
|
||||
|
||||
@ -301,7 +337,7 @@ VIDEO_EOF( exidy )
|
||||
{
|
||||
sx = org_2_x - org_1_x;
|
||||
sy = org_2_y - org_1_y;
|
||||
drawgfx(motion_object_2_clip, machine->gfx[1],
|
||||
drawgfx(motion_object_2_clip, machine->gfx[0],
|
||||
((spriteno >> 4) & 0x0f) + 32 + 16 * enable_set_2, 0,
|
||||
0, 0, sx, sy, &clip, TRANSPARENCY_PEN, 0);
|
||||
}
|
||||
@ -315,7 +351,7 @@ VIDEO_EOF( exidy )
|
||||
UINT8 collision_mask = 0;
|
||||
|
||||
/* check for background collision (M1CHAR) */
|
||||
if (((*BITMAP_ADDR16(tmpbitmap, org_1_y + sy, org_1_x + sx) - 4) & bgmask) != 0)
|
||||
if (((*BITMAP_ADDR16(background_bitmap, org_1_y + sy, org_1_x + sx) - 4) & bgmask) != 0)
|
||||
collision_mask |= 0x04;
|
||||
|
||||
/* check for motion object collision (M1M2) */
|
||||
@ -323,14 +359,14 @@ VIDEO_EOF( exidy )
|
||||
collision_mask |= 0x10;
|
||||
|
||||
/* if we got one, trigger an interrupt */
|
||||
if ((collision_mask & exidy_collision_mask) && count++ < 128)
|
||||
if ((collision_mask & collision_mask) && count++ < 128)
|
||||
timer_set(video_screen_get_time_until_pos(0, org_1_x + sx, org_1_y + sy), NULL, collision_mask, collision_irq_callback);
|
||||
}
|
||||
if (*BITMAP_ADDR16(motion_object_2_vid, sy, sx) != 0xff)
|
||||
{
|
||||
/* check for background collision (M2CHAR) */
|
||||
if (((*BITMAP_ADDR16(tmpbitmap, org_2_y + sy, org_2_x + sx) - 4) & bgmask) != 0)
|
||||
if ((exidy_collision_mask & 0x08) && count++ < 128)
|
||||
if (((*BITMAP_ADDR16(background_bitmap, org_2_y + sy, org_2_x + sx) - 4) & bgmask) != 0)
|
||||
if ((collision_mask & 0x08) && count++ < 128)
|
||||
timer_set(video_screen_get_time_until_pos(0, org_2_x + sx, org_2_y + sy), NULL, 0x08, collision_irq_callback);
|
||||
}
|
||||
}
|
||||
@ -353,8 +389,8 @@ VIDEO_UPDATE( exidy )
|
||||
set_colors(machine);
|
||||
|
||||
/* update the background and draw it */
|
||||
update_background(machine);
|
||||
copybitmap(bitmap, tmpbitmap, 0, 0, 0, 0, cliprect, TRANSPARENCY_NONE, 0);
|
||||
draw_background(machine, background_bitmap, NULL);
|
||||
copybitmap(bitmap, background_bitmap, 0, 0, 0, 0, cliprect, TRANSPARENCY_NONE, 0);
|
||||
|
||||
/* draw sprite 2 first */
|
||||
enable_set_2 = ((sprite_enable & 0x40) != 0);
|
||||
@ -362,7 +398,7 @@ VIDEO_UPDATE( exidy )
|
||||
sx = 236 - sprite2_xpos - 4;
|
||||
sy = 244 - sprite2_ypos - 4;
|
||||
|
||||
drawgfx(bitmap, machine->gfx[1],
|
||||
drawgfx(bitmap, machine->gfx[0],
|
||||
((spriteno >> 4) & 0x0f) + 32 + 16 * enable_set_2, 1,
|
||||
0, 0, sx, sy, cliprect, TRANSPARENCY_PEN, 0);
|
||||
|
||||
@ -376,7 +412,7 @@ VIDEO_UPDATE( exidy )
|
||||
|
||||
if (sy < 0) sy = 0;
|
||||
|
||||
drawgfx(bitmap, machine->gfx[1],
|
||||
drawgfx(bitmap, machine->gfx[0],
|
||||
(spriteno & 0x0f) + 16 * enable_set_1, 0,
|
||||
0, 0, sx, sy, cliprect, TRANSPARENCY_PEN, 0);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user