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https://github.com/holub/mame
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drawgfx.h: Long-overdue documentation about how to use priority-masked
drawing (aka pdrawgfx); add some useful constants. [Alex Jackson] (nw) prehisle.c: Fix issues introduced by pdrawgfx conversion; use required_region_ptr instead of runtime tag lookup; give gfx regions more meaningful names; remove superfluous "prehisle"'s and "16"'s from member names (it's been many years since you could accidentally plug a handler of the wrong width into an address map and not have the core catch you at compile time)
This commit is contained in:
Alex W. Jackson
parent
03e9f7234e
commit
d803e96ac8
@ -7,6 +7,109 @@
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Copyright Nicola Salmoria and the MAME Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************
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How to use priority-masked drawing (formerly pdrawgfx):
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There are two different standard ways to use the priority bitmap
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and the priority-masked draw methods, depending on how many layers
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of interest (tilemap or other layers that individual sprites can
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be either "behind" or "in front of") your driver has.
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In the more common scheme, which you can use when the number of
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layers of interest is four or fewer, the priority bitmap contains
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a bitmask indicating which layers are opaque at each location.
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To use this scheme, draw your tilemap layers this way, in order
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from back to front:
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screen.priority().fill(0, cliprect);
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m_tilemap1->draw(screen, bitmap, cliprect, tmap1flags, 1);
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m_tilemap2->draw(screen, bitmap, cliprect, tmap2flags, 2);
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m_tilemap3->draw(screen, bitmap, cliprect, tmap3flags, 4);
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m_tilemap4->draw(screen, bitmap, cliprect, tmap4flags, 8);
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Now, when drawing your sprites, the pmask parameter for each
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sprite should be the bitwise OR of all the GFX_PMASK_n constants
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corresponding to layers that the sprite should be masked by.
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For example, to draw a sprite that appears over tilemap1, but
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under opaque pixels of tilemap2, tilemap3, and tilemap4:
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UINT32 pmask = GFX_PMASK_2 | GFX_PMASK_4 | GFX_PMASK_8;
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gfx->prio_transpen(bitmap, cliprect,
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code, color,
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flipx, flipy,
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sx, sy,
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screen.priority(),
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pmask,
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trans_pen);
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This scheme does not require priority to be transitive: it is
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perfectly possible for a sprite to be "under" tilemap1 but "over"
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tilemap4, even though tilemap1 itself is "under" tilemap4.
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If you have more than four layers, you need to use a different
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scheme, in which the priority bitmap contains the index of the
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topmost opaque layer rather than a bitmask of all the opaque
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layers. To use this scheme, draw your tilemaps this way, again
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in order from back to front:
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screen.priority().fill(0, cliprect);
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m_tilemap1->draw(screen, bitmap, cliprect, tmap1flags, 1, 0);
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m_tilemap2->draw(screen, bitmap, cliprect, tmap2flags, 2, 0);
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m_tilemap3->draw(screen, bitmap, cliprect, tmap3flags, 3, 0);
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m_tilemap4->draw(screen, bitmap, cliprect, tmap4flags, 4, 0);
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m_tilemap5->draw(screen, bitmap, cliprect, tmap5flags, 5, 0);
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m_tilemap6->draw(screen, bitmap, cliprect, tmap6flags, 6, 0);
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m_tilemap7->draw(screen, bitmap, cliprect, tmap7flags, 7, 0);
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m_tilemap8->draw(screen, bitmap, cliprect, tmap8flags, 8, 0);
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Notice the additional 0 parameter to tilemap_t::draw(). This
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parameter causes the new layer's priority code to replace that of
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the underlying layer instead of being ORed with it (the parameter
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is a mask to be ANDed with the previous contents of the priority
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bitmap before the new code is ORed with it)
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You need to use a different pmask for your sprites with this
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scheme than with the previous scheme. The pmask should be set to
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((~1) << n), where n is the index of the highest priority layer
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that the sprite should *not* be masked by. For example, to draw
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a sprite over the first four tilemaps but under the higher
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numbered ones:
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UINT32 pmask = (~1) << 4;
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gfx->prio_transpen(bitmap, cliprect,
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code, color,
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flipx, flipy,
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sx, sy,
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screen.priority(),
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pmask,
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trans_pen);
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Unlike the other scheme, this one does require priority to be
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transitive, because the priority bitmap only contains information
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about the topmost opaque pixel.
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These examples have used a different tilemap for each layer, but
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the layers could just as easily be different tile categories or
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pen layers from the same tilemap.
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If you have a layer that is behind all sprites, draw it with
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priority 0, and if you have a layer that is in front of all
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sprites, just draw it after the sprites. The bitmask scheme
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can handle up to 6 layers if you count "behind all sprites" and
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"in front of all sprites".
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An important thing to remember when using priority-masked drawing
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is that the sprites are drawn from front to back. Sprite pixels
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will not be drawn over already-drawn sprite pixels, even if the
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previously-drawn pixel was masked by a background layer.
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This reflects the fact that in most hardware, sprite-to-sprite
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priority is unrelated to sprite-to-background priority. Your
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sprites need to be pre-sorted by their sprite-to-sprite priority
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(whether that be a field in the sprite attributes or simply their
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order in sprite RAM) before drawing.
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*********************************************************************/
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#pragma once
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@ -30,6 +133,13 @@ enum
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DRAWMODE_SHADOW
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};
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enum
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{
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GFX_PMASK_1 = 0xaaaa,
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GFX_PMASK_2 = 0xcccc,
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GFX_PMASK_4 = 0xf0f0,
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GFX_PMASK_8 = 0xff00
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};
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/***************************************************************************
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@ -16,7 +16,7 @@
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/******************************************************************************/
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WRITE16_MEMBER(prehisle_state::prehisle_sound16_w)
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WRITE16_MEMBER(prehisle_state::soundcmd_w)
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{
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soundlatch_byte_w(space, 0, data & 0xff);
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m_audiocpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
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@ -27,13 +27,13 @@ WRITE16_MEMBER(prehisle_state::prehisle_sound16_w)
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static ADDRESS_MAP_START( prehisle_map, AS_PROGRAM, 16, prehisle_state )
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AM_RANGE(0x000000, 0x03ffff) AM_ROM
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AM_RANGE(0x070000, 0x073fff) AM_RAM
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AM_RANGE(0x090000, 0x0907ff) AM_RAM_WRITE(prehisle_fg_videoram16_w) AM_SHARE("videoram")
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AM_RANGE(0x090000, 0x0907ff) AM_RAM_WRITE(tx_vram_w) AM_SHARE("tx_vram")
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AM_RANGE(0x0a0000, 0x0a07ff) AM_RAM AM_SHARE("spriteram")
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AM_RANGE(0x0b0000, 0x0b3fff) AM_RAM_WRITE(prehisle_bg_videoram16_w) AM_SHARE("bg_videoram16")
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AM_RANGE(0x0b0000, 0x0b3fff) AM_RAM_WRITE(fg_vram_w) AM_SHARE("fg_vram")
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AM_RANGE(0x0d0000, 0x0d07ff) AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
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AM_RANGE(0x0e0000, 0x0e00ff) AM_READ(prehisle_control16_r)
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AM_RANGE(0x0f0070, 0x0ff071) AM_WRITE(prehisle_sound16_w)
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AM_RANGE(0x0f0000, 0x0ff0ff) AM_WRITE(prehisle_control16_w)
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AM_RANGE(0x0e0000, 0x0e00ff) AM_READ(control_r)
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AM_RANGE(0x0f0070, 0x0ff071) AM_WRITE(soundcmd_w)
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AM_RANGE(0x0f0000, 0x0ff0ff) AM_WRITE(control_w)
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ADDRESS_MAP_END
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/******************************************************************************/
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@ -182,10 +182,10 @@ static const gfx_layout spritelayout =
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};
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static GFXDECODE_START( prehisle )
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GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 16 )
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GFXDECODE_ENTRY( "gfx2", 0, tilelayout, 768, 16 )
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GFXDECODE_ENTRY( "gfx3", 0, tilelayout, 512, 16 )
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GFXDECODE_ENTRY( "gfx4", 0, spritelayout, 256, 16 )
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GFXDECODE_ENTRY( "chars", 0, charlayout, 0, 16 )
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GFXDECODE_ENTRY( "bgtiles", 0, tilelayout, 768, 16 )
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GFXDECODE_ENTRY( "fgtiles", 0, tilelayout, 512, 16 )
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GFXDECODE_ENTRY( "sprites", 0, spritelayout, 256, 16 )
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GFXDECODE_END
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/******************************************************************************/
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@ -243,20 +243,20 @@ ROM_START( prehisle )
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ROM_REGION( 0x10000, "audiocpu", 0 ) /* Sound CPU */
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ROM_LOAD( "gt1.1", 0x000000, 0x10000, CRC(80a4c093) SHA1(abe59e43259eb80b504bd5541f58cd0e5eb998ab) )
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ROM_REGION( 0x008000, "gfx1", 0 )
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ROM_REGION( 0x008000, "chars", 0 )
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ROM_LOAD( "gt15.b15", 0x000000, 0x08000, CRC(ac652412) SHA1(916c04c3a8a7bfb961313ab73c0a27d7f5e48de1) )
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ROM_REGION( 0x040000, "gfx2", 0 )
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ROM_REGION( 0x040000, "bgtiles", 0 )
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ROM_LOAD( "pi8914.b14", 0x000000, 0x40000, CRC(207d6187) SHA1(505dfd1424b894e7b898f91b89f021ddde433c48) )
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ROM_REGION( 0x040000, "gfx3", 0 )
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ROM_REGION( 0x040000, "fgtiles", 0 )
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ROM_LOAD( "pi8916.h16", 0x000000, 0x40000, CRC(7cffe0f6) SHA1(aba08617964fc425418b098be5167021768bd47c) )
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ROM_REGION( 0x0a0000, "gfx4", 0 )
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ROM_REGION( 0x0a0000, "sprites", 0 )
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ROM_LOAD( "pi8910.k14", 0x000000, 0x80000, CRC(5a101b0b) SHA1(9645ab1f8d058cf2c6c42ccb4ce92a9b5db10c51) )
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ROM_LOAD( "gt5.5", 0x080000, 0x20000, CRC(3d3ab273) SHA1(b5706ada9eb2c22fcc0ac8ede2d2ee02ee853191) )
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ROM_REGION( 0x10000, "gfx5", 0 ) /* background tilemaps */
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ROM_REGION( 0x10000, "bgtilemap", 0 ) /* background tilemaps */
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ROM_LOAD( "gt11.11", 0x000000, 0x10000, CRC(b4f0fcf0) SHA1(b81cc0b6e3e6f5616789bb3e77807dc0ef718a38) )
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ROM_REGION( 0x20000, "upd", 0 ) /* ADPCM samples */
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@ -271,20 +271,20 @@ ROM_START( prehisleu )
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ROM_REGION( 0x10000, "audiocpu", 0 ) /* Sound CPU */
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ROM_LOAD( "gt1.1", 0x000000, 0x10000, CRC(80a4c093) SHA1(abe59e43259eb80b504bd5541f58cd0e5eb998ab) )
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ROM_REGION( 0x008000, "gfx1", 0 )
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ROM_REGION( 0x008000, "chars", 0 )
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ROM_LOAD( "gt15.b15", 0x000000, 0x08000, CRC(ac652412) SHA1(916c04c3a8a7bfb961313ab73c0a27d7f5e48de1) )
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ROM_REGION( 0x040000, "gfx2", 0 )
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ROM_REGION( 0x040000, "bgtiles", 0 )
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ROM_LOAD( "pi8914.b14", 0x000000, 0x40000, CRC(207d6187) SHA1(505dfd1424b894e7b898f91b89f021ddde433c48) )
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ROM_REGION( 0x040000, "gfx3", 0 )
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ROM_REGION( 0x040000, "fgtiles", 0 )
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ROM_LOAD( "pi8916.h16", 0x000000, 0x40000, CRC(7cffe0f6) SHA1(aba08617964fc425418b098be5167021768bd47c) )
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ROM_REGION( 0x0a0000, "gfx4", 0 )
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ROM_REGION( 0x0a0000, "sprites", 0 )
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ROM_LOAD( "pi8910.k14", 0x000000, 0x80000, CRC(5a101b0b) SHA1(9645ab1f8d058cf2c6c42ccb4ce92a9b5db10c51) )
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ROM_LOAD( "gt5.5", 0x080000, 0x20000, CRC(3d3ab273) SHA1(b5706ada9eb2c22fcc0ac8ede2d2ee02ee853191) )
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ROM_REGION( 0x10000, "gfx5", 0 ) /* background tilemaps */
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ROM_REGION( 0x10000, "bgtilemap", 0 ) /* background tilemaps */
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ROM_LOAD( "gt11.11", 0x000000, 0x10000, CRC(b4f0fcf0) SHA1(b81cc0b6e3e6f5616789bb3e77807dc0ef718a38) )
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ROM_REGION( 0x20000, "upd", 0 ) /* ADPCM samples */
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@ -299,20 +299,20 @@ ROM_START( prehislek )
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ROM_REGION( 0x10000, "audiocpu", 0 ) /* Sound CPU */
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ROM_LOAD( "gt1.1", 0x000000, 0x10000, CRC(80a4c093) SHA1(abe59e43259eb80b504bd5541f58cd0e5eb998ab) )
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ROM_REGION( 0x008000, "gfx1", 0 )
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ROM_REGION( 0x008000, "chars", 0 )
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ROM_LOAD( "gt15.b15", 0x000000, 0x08000, BAD_DUMP CRC(ac652412) SHA1(916c04c3a8a7bfb961313ab73c0a27d7f5e48de1) ) // not dumped, missing korean text
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ROM_REGION( 0x040000, "gfx2", 0 )
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ROM_REGION( 0x040000, "bgtiles", 0 )
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ROM_LOAD( "pi8914.b14", 0x000000, 0x40000, CRC(207d6187) SHA1(505dfd1424b894e7b898f91b89f021ddde433c48) )
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ROM_REGION( 0x040000, "gfx3", 0 )
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ROM_REGION( 0x040000, "fgtiles", 0 )
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ROM_LOAD( "pi8916.h16", 0x000000, 0x40000, CRC(7cffe0f6) SHA1(aba08617964fc425418b098be5167021768bd47c) )
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ROM_REGION( 0x0a0000, "gfx4", 0 )
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ROM_REGION( 0x0a0000, "sprites", 0 )
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ROM_LOAD( "pi8910.k14", 0x000000, 0x80000, CRC(5a101b0b) SHA1(9645ab1f8d058cf2c6c42ccb4ce92a9b5db10c51) )
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ROM_LOAD( "gt5.5", 0x080000, 0x20000, CRC(3d3ab273) SHA1(b5706ada9eb2c22fcc0ac8ede2d2ee02ee853191) )
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ROM_REGION( 0x10000, "gfx5", 0 ) /* background tilemaps */
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ROM_REGION( 0x10000, "bgtilemap", 0 ) /* background tilemaps */
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ROM_LOAD( "gt11.11", 0x000000, 0x10000, CRC(b4f0fcf0) SHA1(b81cc0b6e3e6f5616789bb3e77807dc0ef718a38) )
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ROM_REGION( 0x20000, "upd", 0 ) /* ADPCM samples */
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@ -327,20 +327,20 @@ ROM_START( gensitou )
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ROM_REGION( 0x10000, "audiocpu", 0 ) /* Sound CPU */
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ROM_LOAD( "gt1.1", 0x000000, 0x10000, CRC(80a4c093) SHA1(abe59e43259eb80b504bd5541f58cd0e5eb998ab) )
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ROM_REGION( 0x008000, "gfx1", 0 )
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ROM_REGION( 0x008000, "chars", 0 )
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ROM_LOAD( "gt15.b15", 0x000000, 0x08000, CRC(ac652412) SHA1(916c04c3a8a7bfb961313ab73c0a27d7f5e48de1) )
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ROM_REGION( 0x040000, "gfx2", 0 )
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ROM_REGION( 0x040000, "bgtiles", 0 )
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ROM_LOAD( "pi8914.b14", 0x000000, 0x40000, CRC(207d6187) SHA1(505dfd1424b894e7b898f91b89f021ddde433c48) )
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ROM_REGION( 0x040000, "gfx3", 0 )
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ROM_REGION( 0x040000, "fgtiles", 0 )
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ROM_LOAD( "pi8916.h16", 0x000000, 0x40000, CRC(7cffe0f6) SHA1(aba08617964fc425418b098be5167021768bd47c) )
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ROM_REGION( 0x0a0000, "gfx4", 0 )
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ROM_REGION( 0x0a0000, "sprites", 0 )
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ROM_LOAD( "pi8910.k14", 0x000000, 0x80000, CRC(5a101b0b) SHA1(9645ab1f8d058cf2c6c42ccb4ce92a9b5db10c51) )
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ROM_LOAD( "gt5.5", 0x080000, 0x20000, CRC(3d3ab273) SHA1(b5706ada9eb2c22fcc0ac8ede2d2ee02ee853191) )
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ROM_REGION( 0x10000, "gfx5", 0 ) /* background tilemaps */
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ROM_REGION( 0x10000, "bgtilemap", 0 ) /* background tilemaps */
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ROM_LOAD( "gt11.11", 0x000000, 0x10000, CRC(b4f0fcf0) SHA1(b81cc0b6e3e6f5616789bb3e77807dc0ef718a38) )
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ROM_REGION( 0x20000, "upd", 0 ) /* ADPCM samples */
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@ -5,9 +5,10 @@ class prehisle_state : public driver_device
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public:
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prehisle_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_videoram(*this, "videoram"),
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m_tx_vram(*this, "tx_vram"),
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m_spriteram(*this, "spriteram"),
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m_bg_videoram16(*this, "bg_videoram16"),
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m_fg_vram(*this, "fg_vram"),
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m_tilemap_rom(*this, "bgtilemap"),
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m_maincpu(*this, "maincpu"),
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m_audiocpu(*this, "audiocpu"),
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m_upd7759(*this, "upd"),
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@ -15,25 +16,26 @@ public:
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m_palette(*this, "palette") { }
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required_shared_ptr<UINT16> m_videoram;
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required_shared_ptr<UINT16> m_tx_vram;
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required_shared_ptr<UINT16> m_spriteram;
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required_shared_ptr<UINT16> m_bg_videoram16;
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required_shared_ptr<UINT16> m_fg_vram;
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required_region_ptr<UINT8> m_tilemap_rom;
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UINT16 m_invert_controls;
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tilemap_t *m_bg2_tilemap;
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tilemap_t *m_bg_tilemap;
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tilemap_t *m_fg_tilemap;
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tilemap_t *m_tx_tilemap;
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DECLARE_WRITE16_MEMBER(prehisle_sound16_w);
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DECLARE_WRITE16_MEMBER(prehisle_bg_videoram16_w);
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DECLARE_WRITE16_MEMBER(prehisle_fg_videoram16_w);
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DECLARE_READ16_MEMBER(prehisle_control16_r);
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DECLARE_WRITE16_MEMBER(prehisle_control16_w);
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DECLARE_WRITE16_MEMBER(soundcmd_w);
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DECLARE_WRITE16_MEMBER(fg_vram_w);
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DECLARE_WRITE16_MEMBER(tx_vram_w);
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DECLARE_READ16_MEMBER(control_r);
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DECLARE_WRITE16_MEMBER(control_w);
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DECLARE_WRITE8_MEMBER(D7759_write_port_0_w);
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DECLARE_WRITE8_MEMBER(D7759_upd_reset_w);
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TILE_GET_INFO_MEMBER(get_bg2_tile_info);
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TILE_GET_INFO_MEMBER(get_bg_tile_info);
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TILE_GET_INFO_MEMBER(get_fg_tile_info);
|
||||
TILE_GET_INFO_MEMBER(get_tx_tile_info);
|
||||
virtual void video_start();
|
||||
UINT32 screen_update_prehisle(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
|
||||
void draw_sprites(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
|
||||
|
||||
@ -10,19 +10,19 @@
|
||||
#include "includes/prehisle.h"
|
||||
|
||||
|
||||
WRITE16_MEMBER(prehisle_state::prehisle_bg_videoram16_w)
|
||||
WRITE16_MEMBER(prehisle_state::fg_vram_w)
|
||||
{
|
||||
COMBINE_DATA(&m_bg_videoram16[offset]);
|
||||
m_bg_tilemap->mark_tile_dirty(offset);
|
||||
}
|
||||
|
||||
WRITE16_MEMBER(prehisle_state::prehisle_fg_videoram16_w)
|
||||
{
|
||||
COMBINE_DATA(&m_videoram[offset]);
|
||||
COMBINE_DATA(&m_fg_vram[offset]);
|
||||
m_fg_tilemap->mark_tile_dirty(offset);
|
||||
}
|
||||
|
||||
READ16_MEMBER(prehisle_state::prehisle_control16_r)
|
||||
WRITE16_MEMBER(prehisle_state::tx_vram_w)
|
||||
{
|
||||
COMBINE_DATA(&m_tx_vram[offset]);
|
||||
m_tx_tilemap->mark_tile_dirty(offset);
|
||||
}
|
||||
|
||||
READ16_MEMBER(prehisle_state::control_r)
|
||||
{
|
||||
switch (offset)
|
||||
{
|
||||
@ -35,7 +35,7 @@ READ16_MEMBER(prehisle_state::prehisle_control16_r)
|
||||
}
|
||||
}
|
||||
|
||||
WRITE16_MEMBER(prehisle_state::prehisle_control16_w)
|
||||
WRITE16_MEMBER(prehisle_state::control_w)
|
||||
{
|
||||
int scroll = 0;
|
||||
|
||||
@ -43,10 +43,10 @@ WRITE16_MEMBER(prehisle_state::prehisle_control16_w)
|
||||
|
||||
switch (offset)
|
||||
{
|
||||
case 0x00: m_bg_tilemap->set_scrolly(0, scroll); break;
|
||||
case 0x08: m_bg_tilemap->set_scrollx(0, scroll); break;
|
||||
case 0x10: m_bg2_tilemap->set_scrolly(0, scroll); break;
|
||||
case 0x18: m_bg2_tilemap->set_scrollx(0, scroll); break;
|
||||
case 0x00: m_fg_tilemap->set_scrolly(0, scroll); break;
|
||||
case 0x08: m_fg_tilemap->set_scrollx(0, scroll); break;
|
||||
case 0x10: m_bg_tilemap->set_scrolly(0, scroll); break;
|
||||
case 0x18: m_bg_tilemap->set_scrollx(0, scroll); break;
|
||||
case 0x23: m_invert_controls = data ? 0x00ff : 0x0000; break;
|
||||
case 0x28: coin_counter_w(machine(), 0, data & 1); break;
|
||||
case 0x29: coin_counter_w(machine(), 1, data & 1); break;
|
||||
@ -60,13 +60,11 @@ WRITE16_MEMBER(prehisle_state::prehisle_control16_w)
|
||||
0 .....xxx gfx code high bits
|
||||
1 xxxxxxxx gfx code low bits
|
||||
*/
|
||||
TILE_GET_INFO_MEMBER(prehisle_state::get_bg2_tile_info)
|
||||
TILE_GET_INFO_MEMBER(prehisle_state::get_bg_tile_info)
|
||||
{
|
||||
UINT8 const *const tilerom = memregion("gfx5")->base();
|
||||
|
||||
int const offs = tile_index * 2;
|
||||
int const attr = tilerom[offs + 1] + (tilerom[offs] << 8);
|
||||
int const code = (attr & 0x7ff) | 0x800;
|
||||
int const attr = m_tilemap_rom[offs + 1] + (m_tilemap_rom[offs] << 8);
|
||||
int const code = attr & 0x7ff;
|
||||
int const color = attr >> 12;
|
||||
int const flags = (attr & 0x800) ? TILE_FLIPX : 0;
|
||||
|
||||
@ -78,9 +76,9 @@ TILE_GET_INFO_MEMBER(prehisle_state::get_bg2_tile_info)
|
||||
0 ....x... ........ flip y
|
||||
0 .....xxx xxxxxxxx gfx code
|
||||
*/
|
||||
TILE_GET_INFO_MEMBER(prehisle_state::get_bg_tile_info)
|
||||
TILE_GET_INFO_MEMBER(prehisle_state::get_fg_tile_info)
|
||||
{
|
||||
int const attr = m_bg_videoram16[tile_index];
|
||||
int const attr = m_fg_vram[tile_index];
|
||||
int const code = attr & 0x7ff;
|
||||
int const color = attr >> 12;
|
||||
int const flags = (attr & 0x800) ? TILE_FLIPY : 0;
|
||||
@ -92,9 +90,9 @@ TILE_GET_INFO_MEMBER(prehisle_state::get_bg_tile_info)
|
||||
0 xxxx.... ........ color
|
||||
0 ....xxxx xxxxxxxx gfx code
|
||||
*/
|
||||
TILE_GET_INFO_MEMBER(prehisle_state::get_fg_tile_info)
|
||||
TILE_GET_INFO_MEMBER(prehisle_state::get_tx_tile_info)
|
||||
{
|
||||
int const attr = m_videoram[tile_index];
|
||||
int const attr = m_tx_vram[tile_index];
|
||||
int const code = attr & 0xfff;
|
||||
int const color = attr >> 12;
|
||||
|
||||
@ -104,30 +102,30 @@ TILE_GET_INFO_MEMBER(prehisle_state::get_fg_tile_info)
|
||||
void prehisle_state::video_start()
|
||||
{
|
||||
// ROM-based background layer
|
||||
m_bg2_tilemap = &machine().tilemap().create(
|
||||
m_gfxdecode,
|
||||
tilemap_get_info_delegate(FUNC(prehisle_state::get_bg2_tile_info), this),
|
||||
TILEMAP_SCAN_COLS, // scan order
|
||||
16, 16, // tile size
|
||||
1024, 32); // tilemap size
|
||||
|
||||
// RAM-based background layer (overlays most sprites)
|
||||
m_bg_tilemap = &machine().tilemap().create(
|
||||
m_gfxdecode,
|
||||
tilemap_get_info_delegate(FUNC(prehisle_state::get_bg_tile_info), this),
|
||||
TILEMAP_SCAN_COLS, // scan order
|
||||
16, 16, // tile size
|
||||
256, 32); // tilemap size
|
||||
m_bg_tilemap->set_transparent_pen(15);
|
||||
1024, 32); // tilemap size
|
||||
|
||||
// text layer
|
||||
// RAM-based foreground layer (overlays most sprites)
|
||||
m_fg_tilemap = &machine().tilemap().create(
|
||||
m_gfxdecode,
|
||||
tilemap_get_info_delegate(FUNC(prehisle_state::get_fg_tile_info), this),
|
||||
TILEMAP_SCAN_COLS, // scan order
|
||||
16, 16, // tile size
|
||||
256, 32); // tilemap size
|
||||
m_fg_tilemap->set_transparent_pen(15);
|
||||
|
||||
// text layer
|
||||
m_tx_tilemap = &machine().tilemap().create(
|
||||
m_gfxdecode,
|
||||
tilemap_get_info_delegate(FUNC(prehisle_state::get_tx_tile_info), this),
|
||||
TILEMAP_SCAN_ROWS, // scan order
|
||||
8, 8, // tile size
|
||||
32, 32); // tilemap size
|
||||
m_fg_tilemap->set_transparent_pen(15);
|
||||
m_tx_tilemap->set_transparent_pen(15);
|
||||
|
||||
/* register for saving */
|
||||
save_item(NAME(m_invert_controls));
|
||||
@ -147,12 +145,12 @@ void prehisle_state::draw_sprites(screen_device &screen, bitmap_ind16 &bitmap, c
|
||||
{
|
||||
UINT16 const *const spriteram16 = m_spriteram;
|
||||
|
||||
for (int offs = 0; offs < 1024; offs += 4)
|
||||
for (int offs = 1024 - 4; offs >= 0; offs -= 4)
|
||||
{
|
||||
int const attr = spriteram16[offs + 2];
|
||||
int const code = attr & 0x1fff;
|
||||
int const color = spriteram16[offs + 3] >> 12;
|
||||
int const priority = (color < 0x4) ? 0x04 : 0x06;
|
||||
int const priority = (color < 0x4) ? 0 : GFX_PMASK_1; // correct?
|
||||
bool flipx = attr & 0x4000;
|
||||
bool flipy = attr & 0x8000;
|
||||
int sx = spriteram16[offs + 1] & 0x1ff;
|
||||
@ -184,10 +182,9 @@ UINT32 prehisle_state::screen_update_prehisle(screen_device &screen, bitmap_ind1
|
||||
{
|
||||
screen.priority().fill(0, cliprect);
|
||||
|
||||
m_bg2_tilemap->draw(screen, bitmap, cliprect, 0, 0);
|
||||
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 1);
|
||||
m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 2);
|
||||
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
|
||||
m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 1);
|
||||
draw_sprites(screen, bitmap, cliprect);
|
||||
|
||||
m_tx_tilemap->draw(screen, bitmap, cliprect, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user