mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-02-24 15:12:23 +01:00
4e2eb23835
byuu says: Changelog: - added Cocoa target: higan can now be compiled for OS X Lion [Cydrak, byuu] - SNES/accuracy profile hires color blending improvements - fixes Marvelous text [AWJ] - fixed a slight bug in SNES/SA-1 VBR support caused by a typo - added support for multi-pass shaders that can load external textures (requires OpenGL 3.2+) - added game library path (used by ananke->Import Game) to Settings->Advanced - system profiles, shaders and cheats database can be stored in "all users" shared folders now (eg /usr/share on Linux) - all configuration files are in BML format now, instead of XML (much easier to read and edit this way) - main window supports drag-and-drop of game folders (but not game files / ZIP archives) - audio buffer clears when entering a modal loop on Windows (prevents audio repetition with DirectSound driver) - a substantial amount of code clean-up (probably the biggest refactoring to date) One highly desired target for this release was to default to the optimal drivers instead of the safest drivers, but because AMD drivers don't seem to like my OpenGL 3.2 driver, I've decided to postpone that. AMD has too big a market share. Hopefully with v093 officially released, we can get some public input on what AMD doesn't like.
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
//PPUcounter emulates the H/V latch counters of the S-PPU2.
|
|
//
|
|
//real hardware has the S-CPU maintain its own copy of these counters that are
|
|
//updated based on the state of the S-PPU Vblank and Hblank pins. emulating this
|
|
//would require full lock-step synchronization for every clock tick.
|
|
//to bypass this and allow the two to run out-of-order, both the CPU and PPU
|
|
//classes inherit PPUcounter and keep their own counters.
|
|
//the timers are kept in sync, as the only differences occur on V=240 and V=261,
|
|
//based on interlace. thus, we need only synchronize and fetch interlace at any
|
|
//point before this in the frame, which is handled internally by this class at
|
|
//V=128.
|
|
|
|
class PPUcounter {
|
|
public:
|
|
alwaysinline void tick();
|
|
alwaysinline void tick(unsigned clocks);
|
|
|
|
alwaysinline bool field () const;
|
|
alwaysinline uint16 vcounter() const;
|
|
alwaysinline uint16 hcounter() const;
|
|
inline uint16 hdot() const;
|
|
inline uint16 lineclocks() const;
|
|
|
|
alwaysinline bool field (unsigned offset) const;
|
|
alwaysinline uint16 vcounter(unsigned offset) const;
|
|
alwaysinline uint16 hcounter(unsigned offset) const;
|
|
|
|
inline void reset();
|
|
function<void ()> scanline;
|
|
void serialize(serializer&);
|
|
|
|
private:
|
|
inline void vcounter_tick();
|
|
|
|
struct {
|
|
bool interlace;
|
|
bool field;
|
|
uint16 vcounter;
|
|
uint16 hcounter;
|
|
} status;
|
|
|
|
struct {
|
|
bool field[2048];
|
|
uint16 vcounter[2048];
|
|
uint16 hcounter[2048];
|
|
|
|
int32 index;
|
|
} history;
|
|
};
|