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document some more used cases

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This commit is contained in:
David Haywood 2013-02-20 20:50:28 +00:00
parent fdd889c2ba
commit abfb93e9f8
1 changed files with 22 additions and 8 deletions
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30
src/mame/drivers/coolridr.c
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@ -763,11 +763,12 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
if (m_blit2_unused!=0) printf("blit1 unknown bits set %08x\n", data);
if (m_b1mode)
{
if (m_b2tpen != 0x7f) printf("m_b1mode 1, m_b2tpen!=0x7f");
if (m_b2tpen != 0x7f) printf("m_b1mode 1, m_b2tpen!=0x7f\n");
}
else
{
if (m_b2tpen != 0x00) printf("m_b1mode 0, m_b2tpen!=0x00");
// 0x01/0x02 trips in rare cases (start of one of the attract levels) maybe this is some kind of alpha instead?
if ((m_b2tpen != 0x00) && (m_b2tpen != 0x01) && (m_b2tpen != 0x02)) printf("m_b1mode 0, m_b2tpen!=0x00,0x01 or 0x02 (is %02x)\n", m_b2tpen);
}
// 00??0uuu
@ -960,12 +961,23 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
// Splat some sprites
for (int h = 0; h < m_hCellCount; h++)
for (int v = 0; v < m_vCellCount; v++)
{
for (int v = 0; v < m_vCellCount; v++)
const int pixelOffsetY = ((m_vPosition) + (v* 16 * m_vZoom)) / 0x40;
if (pixelOffsetY>383)
{
v = m_vCellCount;
continue;
}
for (int h = 0; h < m_hCellCount; h++)
{
const int pixelOffsetX = ((m_hPosition) + (h* 16 * m_hZoom)) / 0x40;
const int pixelOffsetY = ((m_vPosition) + (v* 16 * m_vZoom)) / 0x40;
if (pixelOffsetX>495)
{
h = m_hCellCount;
continue;
}
// It's unknown if it's row-major or column-major
// TODO: Study the CRT test and "Cool Riders" logo for clues.
@ -1024,17 +1036,19 @@ WRITE32_MEMBER(coolridr_state::sysh1_txt_blit_w)
color = m_b1colorNumber;
// DEBUG: Draw 16x16 block
UINT32* line;
for (int y = 0; y < blockhigh; y++)
{
int drawy = pixelOffsetY+y;
const int drawy = pixelOffsetY+y;
if ((drawy>383) || (drawy<0)) continue;
line = &drawbitmap->pix32(drawy);
for (int x = 0; x < blockwide; x++)
{
int drawx = pixelOffsetX+x;
const int drawx = pixelOffsetX+x;
if ((drawx>=495 || drawx<0)) continue;
if (drawbitmap->pix32(drawy,drawx)==0) drawbitmap->pix32(drawy, drawx) = color;
if (line[drawx]==0) line[drawx] = color;
}
}
}