At the end of July 2011, LM published a free DSP ROM that works with games
using the Zelda UCode. His ROM only has the code to handle UCode loading and a
few utility functions, the rest is missing. This includes the four large sound
mixing functions used by the AX UCode and the DROM containing coefficients used
for polyphase resampling in AX.
This is an improved, updated version of this ROM, which changes the following:
- We now have a free DROM that works for polyphase resampling by "emulating"
linear interpolation. The coefficients contained in the DROM are normally a
list of { c1, c2, c3, c4 } which are used to interpolate a sample value from
four previous samples:
out_sample = prev1 * c1 + prev2 * c2 + prev3 * c3 + prev4 * c4
The coefficients are chosen depending on the fractional part of the current
position (basically, our position between the previous and the next sample).
We can use this fact to generate (c1, c2, c3, c4) for each possible
fractional part so that:
out_sample = prev3 * curr_pos + prev4 * (1 - curr_pos)
Which is the formula for linear interpolation between prev3 and prev4. Linear
interpolation is not as good as polyphase resampling but it still works very
well and I couldn't really hear any difference between the two. If someone
wants to generate real polyphase filter coefficients, they are welcome to
submit a patch.
- The IROM now contains the 4 mixing functions used by the AX UCode: mix_add,
mix_add_two, mix_add_ramp, mix_add_ramp_two. They are large, inlined
functions (probably for performance reasons) in the official DSP IROM, our
version prefers to use a loop. This *should* be more performant with our DSP
JIT implementation, but I did not benchmark that.
Because the new DSP ROM is working just as well as the official ROM in 95% of
cases, it is now shipped by default with Dolphin and will be used with DSPLLE
if you don't have an official DSP ROM in User/GC. It will still display a panic
alert at every boot to notice you that you are using a non official DSP ROM
made by us, which is not perfect.
Games using the CARD, IPL or GBA UCodes are still broken. I don't know what
games this actually impacts, but this is a very small proportion compared to
what works.
# By skidau (30) and Pierre Bourdon (1)
* FIFO-BP: (31 commits)
Set g_bSignalTokenInterrupt on the main thread. Fixes the random hang in Harry Potter: Prisoner of Azkaban.
Used a scheduled event to generate the ARAM DMA interrupt if the DMA is greater than a certain size. Fixes NFS:HP2 GC.
Bumped up the disc transfer speed enough to prevent audio stuttering in Gauntlet: Dark Legacy.
Enabled Synchronise GPU on "SPEED CHALLENGE - Jacques Villeneuve's Racing Vision". Required to go in-game.
Added direct GameCube controller commands to the Serial Interface emulation. Fixes the controls in MaxPlay Classic Games Volume 1 and the Action Replay disc.
Increased the FIFO buffer size to 2MB from 1MB. Fixes Killer 7's Angel boss.
Used an immediate GenerateDSPInterrupt when transferring data from ARAM to MRAM and a scheduled DSP interrupt when transferring data from MRAM to ARAM.
Fixes the audio cutting in and out in the Resident Evil GC games using DSP HLE. Triggered the ARAM interrupt by the scheduler instead of directly in function.
Implemented proper timing for the sample counter in the AudioInterface, removing the previous hack. Cleaned up some of the audio streaming code.
Skipped the EE check if there is a CP interrupt pending.
Disabled "Speed up disc transfer" from the ZTP GC game ini.
Removed the disc seek times for GC games and removed the disc speed option on Wii games. Checked for external exceptions only in mtmsr.
Delayed the interrupts in the EXI Channel.
Merge aram-dma-fixes (r76a13604ef49b522281af75675f044d59a74e871)
Added a patch that bypasses the FIFO reset code in Wallace and Gromit: Project Zoo, allowing it to go in-game.
Made vertex loading take constant time.
Increased the cycle time of the vertex command. Fixes "Speed Challenge: Jacques Villeneuve's Racing Vision".
Moved the setting of the Finish interrupt signal back to the main thread as it was causing Wii games like Resident Evil 4 (Wii) to hang.
Profile stores, fp stores and ps stores only to the fifo write addresses list. This should make the JIT a little faster as it will not be checking for external exceptions unnecessarily.
...
Conflicts:
Source/Core/VideoCommon/Src/PixelEngine.cpp
Triggered the ARAM interrupt by the scheduler instead of directly in function. Fixes a hang in Mario Super Baseball.
Fixes issue 5825.
Fixes issue 5096.
# By Jordan Woyak (46) and others
# Via Jordan Woyak (2) and others
* master: (70 commits)
Fixes two memory leaks, one is pretty bad for OSX. Yell at pauldachz if this doesn't work. Or... say thanks.
Added a BluetoothEnumerateInstalledServices call so that the wiimote remembers the pairing.
Make ARMJit core default CPU core on ARM architecture
Fix a StringUtil regression from the arm-noglsl merge
Small improvement to cmpli/cmpi in ARMJit.
Merge latest ArmEmitter changes from ppsspp while we're at it.
Ah. I blame vim on this typo entirely.
Add disabled code for authenticating wiimotes on Windows.
Add the missing FPR cache
Buildfix.
Yell at the user if they change window size while dumping frames, and some other avi dumping stuff.
Not sure if this is the right way to handle this, but it makes the save states perfectly stable. That's all that really matters, right?
Abort loading states from incompatible graphics backends.
ARM Support without GLSL
Improve VideoSoftware save states. They are fairly stable, but not perfect. OpcodeDecoder::DoState() needs to be fixed.
Begin implementing save states to video software. Kind of works, sometimes.
Make error message for loading save state with wrong dsp engine shorter.
Abort load state if it uses a different dsp engine, instead of crashing.
Update the gameini of F-zero. Efb to Ram is no longer the default choice.
fix last commit by neobrain
...
Conflicts:
Source/Core/VideoCommon/Src/Fifo.cpp
# By Jordan Woyak (9) and others
* master:
Fixed a buffer overflow in the OpenAL buffer.
TextureCache: Fix D3D backends crashing when a game uses multiple 1x1-sized LODs.
WII_IPC_HLE_Device_FileIO: don't rebuild the filename on every operation.
Some cleanup of CWII_IPC_HLE_Device_FileIO: The real file was never kept open for longer than a single operation so there was no point in dealing with it in DoState. Saving the real path in the savestate was also probably a bad idea. Savestates should be a bit more portable now.
Removing destination on rename when source isn't present doesn't make sense. IOCTL_RENAME_FILE still might not be totally correct.
Change some CNANDContentLoader logic to what was probably intended. Kills some warn logs when opening Dolphin.
Let's not CreateDir an empty string every time CreateFullPath is used, logging an error every time.
Fix a memleak. Probably/maybe improve USBGecko performance.
Remove the core count from the cpu info OSD message. It was often wrong and not rather important.
Use omp_get_num_procs to set the number of OpenMP threads rather than our core count detection.
Bulk send TCP data to the client with the emulated USB Gecko.
Added the ability to reverse the direction of the force feedback by allowing negative range values.
Changes/cleanup to TextureCache::Load and other mipmap related code. The significant change is what is now line 520 of TextureCacheBase.cpp: ((std::max(mipWidth, bsw) * std::max(mipHeight, bsh) * bsdepth) >> 1) to TexDecoder_GetTextureSizeInBytes(expanded_mip_width, expanded_mip_height, texformat);
The real file was never kept open for longer than a single operation so there was no point in dealing with it in DoState.
Saving the real path in the savestate was also probably a bad idea. Savestates should be a bit more portable now.
# By Jordan Woyak (24) and others
# Via Jordan Woyak (3) and others
* master: (66 commits)
Reduce some DI command delays. Fix DKCR hanging with DSP HLE. My other games continue to work.
Video_Software: Fix ZComploc option breaking stuff.
Video_Software: Fix the ZFreeze option doing nothing.
Video_Software: Toggable zfreeze and early_z support for testing.
Fix header guard and definitions not being set to 1
Add the option to turn on only the EGL interface to use desktop OpenGL with it.
Change the ugly "no banner" banner to the sexy "X" from the website.
Fix a crash in the FifoPlayer dialog.
Use different reply delays for various DI commands. Fixes issue 5983.
Revert "[bugfix] DX9::TextureCache: Use max_lod instead of min_lod where necessary."
Fix some potential issues when blending on EFB formats without alpha. Clean up state transition tables.
Disable play and record buttons if an iso was selected, but is later deselected.
Disable start/play recording buttons when no iso is selected.
Only delay DI and fs IPC replies. Fixes issue 5982.
Fix compilation with SDL2. (based on a patch from matthewharveys) Fixes issue 5971.
"Fix" using SDL from externals.
Clean up SDL includes a bit. Maybe fix an SDL2 problem.
Number "unknown" axes in OSX rather than call them all "unk".
Revert "Only delay DI command replies." Fix "Wii Party" again.
Hopefully make wiimote speaker less crappy.
...
While hacky, this seems to fix various problems without increasing IPC HLE freq to infinity.
Thanks to Aristar for helping test.
Increase IPC command reply delay to 1/100th of a second. (fixes DKCR hanging)
