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c45.c: reduce tagmap lookups (nw)

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This commit is contained in:
Alex W. Jackson 2014-04-08 17:25:12 +00:00
parent f5c172f6f0
commit b5aba4d717
2 changed files with 8 additions and 6 deletions
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11
src/mame/video/c45.c
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@ -141,7 +141,6 @@ WRITE16_MEMBER( namco_c45_road_device::tileram_w )
void namco_c45_road_device::draw(bitmap_ind16 &bitmap, const rectangle &cliprect, int pri) void namco_c45_road_device::draw(bitmap_ind16 &bitmap, const rectangle &cliprect, int pri)
{ {
const UINT8 *clut = (const UINT8 *)memregion("clut")->base();
bitmap_ind16 &source_bitmap = m_tilemap->pixmap(); bitmap_ind16 &source_bitmap = m_tilemap->pixmap();
unsigned yscroll = m_lineram[0x3fe/2]; unsigned yscroll = m_lineram[0x3fe/2];
@ -201,8 +200,8 @@ void namco_c45_road_device::draw(bitmap_ind16 &bitmap, const rectangle &cliprect
int pen = source_gfx[sourcex >> 16]; int pen = source_gfx[sourcex >> 16];
if (palette()->pen_indirect(pen) != m_transparent_color) if (palette()->pen_indirect(pen) != m_transparent_color)
{ {
if (clut != NULL) if (m_clut != NULL)
pen = (pen & ~0xff) | clut[pen & 0xff]; pen = (pen & ~0xff) | m_clut[pen & 0xff];
dest[screenx] = pen; dest[screenx] = pen;
} }
screenx++; screenx++;
@ -214,8 +213,8 @@ void namco_c45_road_device::draw(bitmap_ind16 &bitmap, const rectangle &cliprect
while (numpixels-- > 0) while (numpixels-- > 0)
{ {
int pen = source_gfx[sourcex >> 16]; int pen = source_gfx[sourcex >> 16];
if (clut != NULL) if (m_clut != NULL)
pen = (pen & ~0xff) | clut[pen & 0xff]; pen = (pen & ~0xff) | m_clut[pen & 0xff];
dest[screenx++] = pen; dest[screenx++] = pen;
sourcex += dsourcex; sourcex += dsourcex;
} }
@ -230,6 +229,8 @@ void namco_c45_road_device::draw(bitmap_ind16 &bitmap, const rectangle &cliprect
void namco_c45_road_device::device_start() void namco_c45_road_device::device_start()
{ {
m_clut = memregion("clut")->base();
// create a tilemap for the road // create a tilemap for the road
m_tilemap = &machine().tilemap().create(*this, tilemap_get_info_delegate(FUNC(namco_c45_road_device::get_road_info), this), m_tilemap = &machine().tilemap().create(*this, tilemap_get_info_delegate(FUNC(namco_c45_road_device::get_road_info), this),
TILEMAP_SCAN_ROWS, ROAD_TILE_SIZE, ROAD_TILE_SIZE, ROAD_COLS, ROAD_ROWS); TILEMAP_SCAN_ROWS, ROAD_TILE_SIZE, ROAD_TILE_SIZE, ROAD_COLS, ROAD_ROWS);

3
src/mame/video/c45.h
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@ -61,8 +61,9 @@ private:
required_shared_ptr<UINT16> m_tmapram; required_shared_ptr<UINT16> m_tmapram;
required_shared_ptr<UINT16> m_tileram; required_shared_ptr<UINT16> m_tileram;
required_shared_ptr<UINT16> m_lineram; required_shared_ptr<UINT16> m_lineram;
pen_t m_transparent_color; UINT8 * m_clut;
tilemap_t * m_tilemap; tilemap_t * m_tilemap;
pen_t m_transparent_color;
}; };