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cobra: register 0x114 is fb read pix/line count (nw)

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This commit is contained in:
Ville Linde 2016-01-30 16:16:42 +02:00
parent 0be7219fbb
commit 37adee5d3e
1 changed files with 35 additions and 21 deletions
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56
src/mame/drivers/cobra.cpp
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@ -155,7 +155,8 @@
0x000a4: Viewport height / 2?
0x000ac: Viewport center Y
0x00114: High word: framebuffer pitch? Low word: framebuffer pixel size?
0x00114: xxxxxxxx xxxxxxxx -------- -------- Framebuffer pixel read line count
-------- -------- xxxxxxxx xxxxxxxx Framebuffer pixel read pixel count
0x00118: xxxxxxxx xxxxxxxx -------- -------- Framebuffer pixel read X pos
-------- -------- xxxxxxxx xxxxxxxx Framebuffer pixel read Y pos
@ -1631,6 +1632,10 @@ WRITE64_MEMBER(cobra_state::main_fifo_w)
gfx_ram[(0x38632c^4) / 4] = 0x38600000; // skip check_one_scene()
}
// racjamdx
else if (strcmp(space.machine().system().name, "racjamdx") == 0)
{
}
}
m_main_debug_state = 0;
@ -2639,33 +2644,42 @@ void cobra_renderer::gfx_fifo_exec()
{
// Read a specified pixel position from a pixelbuffer
// printf("GFX: FB read X: %d, Y: %d\n", (UINT16)(m_gfx_gram[0x118/4] >> 16), (UINT16)(m_gfx_gram[0x118/4]));
// printf("GFX: FB read X: %d, Y: %d, %08X\n", (UINT16)(m_gfx_gram[0x118/4] >> 16), (UINT16)(m_gfx_gram[0x118/4]), m_gfx_gram[0x114/4]);
int x = (m_gfx_gram[0x118/4] >> 16) & 0xffff;
int y = m_gfx_gram[0x118/4] & 0xffff;
UINT32 *buffer;
switch (m_gfx_gram[0x80104/4])
{
case 0x800000: buffer = &m_framebuffer->pix32(y); break;
case 0x200000: buffer = &m_backbuffer->pix32(y); break;
case 0x0e0000: buffer = &m_overlay->pix32(y); break;
case 0x000800: buffer = &m_zbuffer->pix32(y); break;
case 0x000200: buffer = &m_stencil->pix32(y); break;
default:
{
fatalerror("gfxfifo_exec: fb read from buffer %08X!\n", m_gfx_gram[0x80100/4]);
}
}
int pix_count = m_gfx_gram[0x114/4] & 0xffff;
int line_count = (m_gfx_gram[0x114/4] >> 16) & 0xffff;
// flush fifo_out so we have fresh data at top
fifo_out->flush();
fifo_out->push(nullptr, buffer[x+0]);
fifo_out->push(nullptr, buffer[x+1]);
fifo_out->push(nullptr, buffer[x+2]);
fifo_out->push(nullptr, buffer[x+3]);
if (pix_count != 4)
fatalerror("GFX: fb read line count %d, pix count %d\n", line_count, pix_count);
for (int i=0; i < line_count; i++)
{
UINT32 *buffer;
switch (m_gfx_gram[0x80104/4])
{
case 0x800000: buffer = &m_framebuffer->pix32(y+i); break;
case 0x200000: buffer = &m_backbuffer->pix32(y+i); break;
case 0x0e0000: buffer = &m_overlay->pix32(y+i); break;
case 0x000800: buffer = &m_zbuffer->pix32(y+i); break;
case 0x000200: buffer = &m_stencil->pix32(y+i); break;
default:
{
fatalerror("gfxfifo_exec: fb read from buffer %08X!\n", m_gfx_gram[0x80100/4]);
}
}
fifo_out->push(nullptr, buffer[x+0]);
fifo_out->push(nullptr, buffer[x+1]);
fifo_out->push(nullptr, buffer[x+2]);
fifo_out->push(nullptr, buffer[x+3]);
}
cobra->m_gfx_re_status = RE_STATUS_IDLE;
break;
@ -3022,7 +3036,7 @@ WRITE64_MEMBER(cobra_state::gfx_buf_w)
// teximage_load() / mbuslib_prc_read(): 0x00A00001 0x10520800
// printf("prc_read %08X%08X at %08X\n", (UINT32)(data >> 32), (UINT32)(data), activecpu_get_pc());
// printf("prc_read %08X%08X at %08X\n", (UINT32)(data >> 32), (UINT32)(data), space.device().safe_pc());
m_renderer->gfx_fifo_exec();