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cobra.c: Added gfx register masking (nw)

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This commit is contained in:
Ville Linde 2012-08-05 16:25:03 +00:00
parent 20588708f6
commit 5a6068bede
1 changed files with 32 additions and 6 deletions
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38
src/mame/drivers/cobra.c
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@ -174,10 +174,17 @@
0x00118: High word: FB pixel read X pos, Low word: FB pixel read Y pos
0x0011c: Same as above?
0x40018: Set to 0x0001040a by mode_stipple()
0x400d0: Set to 0x80000000 by mode_stipple()
0x40114: Set to 0x00080000 by mode_scissor()
0x40138: Set to 0x88800000 by mode_viewclip()
0x40160: Some viewport register? (high word: 192, low word: 150)
0x40164: Some viewport register? (high word: 352, low word: 275)
0x40170: Some viewport register? (high word: 160, low word: 125)
0x40174: Some viewport register? (high word: 320, low word: 250)
0x40198: Set to 0x80800000 by mode_alphatest()
0x4019c: Set to 0x88000000 by mode_fog()
0x80020: Set to 0x00020000 by mode_depthtest()
0xc0c00..fff: Texture RAM readback
0xc3020: Start address for texram writes?
0xc3028: Reads address from texram?
@ -221,6 +228,22 @@ public:
// TODO: these are probably set by some 3D registers
m_texture_width = 128;
m_texture_height = 8;
m_gfx_regmask = auto_alloc_array(machine, UINT32, 0x100);
for (int i=0; i < 0x100; i++)
{
UINT32 mask = 0;
if (i & 0x01) mask |= 0x0000000f;
if (i & 0x02) mask |= 0x000000f0;
if (i & 0x04) mask |= 0x00000f00;
if (i & 0x08) mask |= 0x0000f000;
if (i & 0x10) mask |= 0x000f0000;
if (i & 0x20) mask |= 0x00f00000;
if (i & 0x40) mask |= 0x0f000000;
if (i & 0x80) mask |= 0xf0000000;
m_gfx_regmask[i] = mask;
}
}
void render_texture_scan(INT32 scanline, const extent_t &extent, const cobra_polydata &extradata, int threadid);
@ -232,7 +255,7 @@ public:
void gfx_reset(running_machine &machine);
void gfx_fifo_exec(running_machine &machine);
UINT32 gfx_read_gram(UINT32 address);
void gfx_write_gram(UINT32 address, UINT32 data);
void gfx_write_gram(UINT32 address, UINT32 mask, UINT32 data);
void display(bitmap_rgb32 *bitmap, const rectangle &cliprect);
@ -248,6 +271,7 @@ private:
int m_texture_height;
UINT32 *m_gfx_gram;
UINT32 *m_gfx_regmask;
};
class cobra_fifo
@ -1448,7 +1472,7 @@ UINT32 cobra_renderer::gfx_read_gram(UINT32 address)
return m_gfx_gram[address/4];
}
void cobra_renderer::gfx_write_gram(UINT32 address, UINT32 data)
void cobra_renderer::gfx_write_gram(UINT32 address, UINT32 mask, UINT32 data)
{
if (address & 3)
{
@ -1460,7 +1484,8 @@ void cobra_renderer::gfx_write_gram(UINT32 address, UINT32 data)
{
}
m_gfx_gram[address/4] = data;
m_gfx_gram[address/4] &= ~mask;
m_gfx_gram[address/4] |= data & mask;
}
void cobra_renderer::gfx_fifo_exec(running_machine &machine)
@ -2036,12 +2061,13 @@ void cobra_renderer::gfx_fifo_exec(running_machine &machine)
// 0xa40000FF 0x00000001
int reg = (w1 >> 8) & 0xfffff;
UINT32 mask = m_gfx_regmask[w1 & 0xff];
gfx_write_gram(reg, w2);
gfx_write_gram(reg, mask, w2);
if (reg != 0x118 && reg != 0x114 && reg != 0x11c)
{
printf("gfxfifo_exec: ram write %05X: %08X (%f)\n", reg, w2, u2f(w2));
printf("gfxfifo_exec: ram write %05X (mask %08X): %08X (%f)\n", reg, mask, w2, u2f(w2));
}
cobra->m_gfx_re_status = RE_STATUS_IDLE;
@ -2071,7 +2097,7 @@ void cobra_renderer::gfx_fifo_exec(running_machine &machine)
UINT64 value = 0;
fifo_in->pop(NULL, &value);
gfx_write_gram(reg + (i*4), value);
gfx_write_gram(reg + (i*4), 0xffffffff, value);
}
cobra->m_gfx_re_status = RE_STATUS_IDLE;