bool ZCompare(u16 x, u16 y, u32 z)
{
u32 offset = GetDepthOffset(x, y);
u32 depth = GetPixelDepth(offset);
bool pass;
switch (bpmem.zmode.func)
{
case ZMode::NEVER:
pass = false;
break;
case ZMode::LESS:
pass = z < depth;
break;
case ZMode::EQUAL:
pass = z == depth;
break;
case ZMode::LEQUAL:
pass = z <= depth;
break;
case ZMode::GREATER:
pass = z > depth;
break;
case ZMode::NEQUAL:
pass = z != depth;
break;
case ZMode::GEQUAL:
pass = z >= depth;
break;
case ZMode::ALWAYS:
pass = true;
break;
default:
pass = false;
ERROR_LOG(VIDEO, "Bad Z compare mode %i", (int)bpmem.zmode.func);
}
if (pass && bpmem.zmode.updateenable)
{
SetPixelDepth(offset, z);
}
return pass;
}
u8 *GetPixelPointer(u16 x, u16 y, bool depth)
{
if (depth)
return &efb[GetDepthOffset(x, y)];
return &efb[GetColorOffset(x, y)];
}
void SetDepth(u16 x, u16 y, u32 depth)
{
if (bpmem.zmode.updateenable)
SetPixelDepth(GetDepthOffset(x, y), depth);
}
u32 GetDepth(u16 x, u16 y)
{
u32 offset = GetDepthOffset(x, y);
return GetPixelDepth(offset);
}
void SetDepth(u16 x, u16 y, u32 depth)
{
SetPixelDepth(GetDepthOffset(x, y), depth);
}
