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trident: added 2D acceleration support for 15/16/32bpp video modes (untested since XFree86 3.3 requires linear addressing, which in turn requires VLB or PCI support :()

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mahlemiut 2014-09-21 04:43:40 +00:00
parent 9f1f66ef84
commit b6e9d10294
2 changed files with 100 additions and 8 deletions
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98
src/emu/bus/isa/trident.c
View File

@ -14,10 +14,6 @@ const device_type TRIDENT_VGA = &device_creator<trident_vga_device>;
#define CRTC_PORT_ADDR ((vga.miscellaneous_output&1)?0x3d0:0x3b0)
#define READPIXEL8(x,y) (vga.memory[((y & 0xfff)*offset() + (x & 0xfff)) % vga.svga_intf.vram_size])
#define WRITEPIXEL8(x,y,c) if((x & 0xfff)<tri.accel_dest_x_clip && (y & 0xfff)<tri.accel_dest_y_clip) \
(vga.memory[((y & 0xfff)*offset() + (x & 0xfff)) % vga.svga_intf.vram_size] = c)
#define LOG (1)
#define LOG_ACCEL (0)
@ -26,6 +22,92 @@ trident_vga_device::trident_vga_device(const machine_config &mconfig, const char
{
}
UINT8 trident_vga_device::READPIXEL8(INT16 x, INT16 y)
{
return (vga.memory[((y & 0xfff)*offset() + (x & 0xfff)) % vga.svga_intf.vram_size]);
}
UINT16 trident_vga_device::READPIXEL15(INT16 x, INT16 y)
{
return (vga.memory[((y & 0xfff)*offset() + (x & 0xfff)*2) % vga.svga_intf.vram_size] |
(vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*2)+1) % vga.svga_intf.vram_size] << 8));
}
UINT16 trident_vga_device::READPIXEL16(INT16 x, INT16 y)
{
return (vga.memory[((y & 0xfff)*offset() + (x & 0xfff)*2) % vga.svga_intf.vram_size] |
(vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*2)+1) % vga.svga_intf.vram_size] << 8));
}
UINT32 trident_vga_device::READPIXEL32(INT16 x, INT16 y)
{
return (vga.memory[((y & 0xfff)*offset() + (x & 0xfff)*4) % vga.svga_intf.vram_size] |
(vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*4)+1) % vga.svga_intf.vram_size] << 8) |
(vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*4)+2) % vga.svga_intf.vram_size] << 16) |
(vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*4)+3) % vga.svga_intf.vram_size] << 24));
}
void trident_vga_device::WRITEPIXEL8(INT16 x, INT16 y, UINT8 data)
{
if((x & 0xfff)<tri.accel_dest_x_clip && (y & 0xfff)<tri.accel_dest_y_clip)
vga.memory[((y & 0xfff)*offset() + (x & 0xfff)) % vga.svga_intf.vram_size] = data;
}
void trident_vga_device::WRITEPIXEL15(INT16 x, INT16 y, UINT16 data)
{
if((x & 0xfff)<tri.accel_dest_x_clip && (y & 0xfff)<tri.accel_dest_y_clip)
{
vga.memory[((y & 0xfff)*offset() + (x & 0xfff)*2) % vga.svga_intf.vram_size] = data & 0x00ff;
vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*2)+1) % vga.svga_intf.vram_size] = (data & 0x7f00) >> 8;
}
}
void trident_vga_device::WRITEPIXEL16(INT16 x, INT16 y, UINT16 data)
{
if((x & 0xfff)<tri.accel_dest_x_clip && (y & 0xfff)<tri.accel_dest_y_clip)
{
vga.memory[((y & 0xfff)*offset() + (x & 0xfff)*2) % vga.svga_intf.vram_size] = data & 0x00ff;
vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*2)+1) % vga.svga_intf.vram_size] = (data & 0xff00) >> 8;
}
}
void trident_vga_device::WRITEPIXEL32(INT16 x, INT16 y, UINT32 data)
{
if((x & 0xfff)<tri.accel_dest_x_clip && (y & 0xfff)<tri.accel_dest_y_clip)
{
vga.memory[((y & 0xfff)*offset() + (x & 0xfff)*4) % vga.svga_intf.vram_size] = data & 0x000000ff;
vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*4)+1) % vga.svga_intf.vram_size] = (data & 0x0000ff00) >> 8;
vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*4)+2) % vga.svga_intf.vram_size] = (data & 0x00ff0000) >> 16;
vga.memory[((y & 0xfff)*offset() + ((x & 0xfff)*4)+3) % vga.svga_intf.vram_size] = (data & 0xff000000) >> 24;
}
}
UINT32 trident_vga_device::READPIXEL(INT16 x,INT16 y)
{
if(svga.rgb8_en)
return READPIXEL8(x,y) & 0xff;
if(svga.rgb15_en)
return READPIXEL15(x,y) & 0x7fff;
if(svga.rgb16_en)
return READPIXEL16(x,y) & 0xffff;
if(svga.rgb32_en)
return READPIXEL32(x,y);
return 0; // should never reach here
}
void trident_vga_device::WRITEPIXEL(INT16 x,INT16 y, UINT32 data)
{
if(svga.rgb8_en)
WRITEPIXEL8(x,y,data & 0xff);
if(svga.rgb15_en)
WRITEPIXEL15(x,y,data & 0x7fff);
if(svga.rgb16_en)
WRITEPIXEL16(x,y,data & 0xffff);
if(svga.rgb32_en)
WRITEPIXEL32(x,y,data);
}
void trident_vga_device::device_start()
{
memset(&vga, 0, sizeof(vga));
@ -1034,11 +1116,11 @@ void trident_vga_device::accel_bitblt()
{
if(tri.accel_drawflags & 0x4000) // Solid fill
{
WRITEPIXEL8(x,y,tri.accel_fgcolour);
WRITEPIXEL(x,y,tri.accel_fgcolour);
}
else
{
WRITEPIXEL8(x,y,READPIXEL8(sx,sy));
WRITEPIXEL(x,y,READPIXEL(sx,sy));
}
}
}
@ -1067,7 +1149,7 @@ void trident_vga_device::accel_line()
}
for(;;)
{
WRITEPIXEL8(tri.accel_dest_x,tri.accel_dest_y,col);
WRITEPIXEL(tri.accel_dest_x,tri.accel_dest_y,col);
if (count > tri.accel_dim_y) break;
count++;
if((err*2) > -dy)
@ -1089,7 +1171,7 @@ void trident_vga_device::accel_data_write(UINT32 data)
for(int x=31;x>=0;x--)
{
if(((data >> x) & 0x01) != 0)
WRITEPIXEL8(tri.accel_mem_x,tri.accel_mem_y,tri.accel_fgcolour);
WRITEPIXEL(tri.accel_mem_x,tri.accel_mem_y,tri.accel_fgcolour);
tri.accel_mem_x++;
}
if(tri.accel_mem_x > tri.accel_dest_x+tri.accel_dim_x)

10
src/emu/bus/isa/trident.h
View File

@ -105,6 +105,16 @@ private:
void accel_bitblt();
void accel_line();
void accel_data_write(UINT32 data);
UINT8 READPIXEL8(INT16 x, INT16 y);
UINT16 READPIXEL15(INT16 x, INT16 y);
UINT16 READPIXEL16(INT16 x, INT16 y);
UINT32 READPIXEL32(INT16 x, INT16 y);
void WRITEPIXEL8(INT16 x, INT16 y, UINT8 data);
void WRITEPIXEL15(INT16 x, INT16 y, UINT16 data);
void WRITEPIXEL16(INT16 x, INT16 y, UINT16 data);
void WRITEPIXEL32(INT16 x, INT16 y, UINT32 data);
UINT32 READPIXEL(INT16 x,INT16 y);
void WRITEPIXEL(INT16 x,INT16 y, UINT32 data);
};