which I though a just a one or two-liner equivalent to glReadPixels.
Turns out that SDL2 doesn't return 24-bit RGB data (only 16 or 32-bit),
so the PNGLibrary had to massage the data. In the process, converted
the PNG saving functions to actually use PNG library functions, which
greatly simplified converting packing from 32 -> 24-bit. Historically,
the PNG save functions were written before libpng was a requirement,
so they were hand-rolled. Once libpng was integrated into the codebase,
it didn't make much sense to not use it anymore.
So an expected two-line code fix became this commit ...
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and (simulated) fullscreen mode.
Fullscreen mode is now simulated in that it creates a window that matches
what would appear in fullscreen. The next thing to do is actually have
the backend create this fullscreen mode correctly.
Changed 'gl_fsscale' to 'tia.fsfill' to more properly indicate what the
option does.
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Changed pointers to references in c'tor calls, making things a little safer.
Removed FBSurfaceTIA, since it was tied too closely to SDL itself. Added a
class called TIASurface that is functionally very similar, but is more generic
and accessible by the FrameBuffer directly. Eventually, this class will take
responsibility for all things related to rendering the TIA image (Blargg TV
effects, phosphor mode, etc).
TIA rendering is currently borked; fixes will follow ...
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making this class more robust, and enabling it to be used for either UI
surfaces or TIA surfaces.
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things again :) Work continues on refactoring the FBSurface code, and
moving thing out of the xxxSDL classes that don't really have anything
to do with SDL. This will also make it easier to port Stella to other
graphical toolkits.
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Rearranged some of the desktop size code, to be more consistent with the
new API.
Beginning to remove the old assumptions that a smaller screen than 640x480
could be used. In the 4.0 release, the smallest (internal) screen
supported will actually be 640x480, and if the real desktop can't display
it, then it will be scaled down. This is one of the nice benefits of
killing pure software rendering support, and letting the hardware just
draw the screen as it likes.
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conversion.
There are changes all over the FrameBuffer classes. Still TODO is
TIA resizing in windowed mode, and all fullscreen modes. The infrastructure
is close to completion, and it should be pretty easy to get the framebuffer
stuff done in the next week or so.
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renderer backends (in SDL). This allows to select software mode (not
recommended) or Direct3D/OpenGL in Windows.
The app icon is now loaded in Windows.
Cleaned up the VideoDialog UI, removing references to double-buffering
and OpenGL-specific settings.
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to SDL2. For now, there are many things broken, namely keyboard handling
and fullscreen modes. But the launcher does show up, allows to start a
game and enter/exit the debugger, etc.
The code will only compile on Linux for now, and sometimes maybe not even
then. Expect breakage on a regular basis over the next month or so.
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into FrameBufferSDL2 only. This will make conversion to actual SDL2 code much
easier, since it won't be touching any of the core emulation code in src/emucore.
Next TODO is something similar for EventHandler (which uses SDL heavily and is
too tied to a core class).
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break. First thing to do is update the year. Happy new year to anyone
reading these commit logs.
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have been changed to 'SDL2'. From this point on, the OpenGL-specific
code will be removed, and replaced by SDL2-specific hardware-accelerated
code.
Cleaned up (mostly) the API of FrameBuffer vs FrameBufferSDL2. Since the
FrameBuffer class is an emucore object, it should have no knowledge of SDL,
or any particular rendering toolkit for that matter (just in case we want
to move to SDL3 eventually :) ).
At this point, all checks for OpenGL have been removed, so if you don't
have it on your system, Stella will fail to compile and/or run.
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converting StringMap to VariantList. In the process, some of the
code is much cleaner, and the Variant infrastructure allows
work to continue on a more full-featured ContextMenu.
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debugger. In the process, I had to spend several days extending
the UI/dialog class to actually contain multiple tabs. This was
harder than expected, and it still isn't quite finished. In many
ways, we're beginning to reach the limits of the current code; it
was never designed for a full-fledged, graphically rich UI.
For now the tab is empty, but eventually it will contain general
info about the ROM bankswitch type (size, virtual layout, etc),
but also cart-specific info, including the ability to change
banks, which can be vary greatly among the different schemes.
Eventually, it may even allow to see/modify very cart-specific
info (like display RAM in DPC, etc).
Better handle errors in opening the serial port (AtariVox support)
for Windows and OSX.
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RAM to do so, which I agonized over for about a week, but I feel it's
a fairly good tradeoff for the features we get. Eventually, I may come
up with a more accurate phosphor mode which eliminates this approach
entirely.
Reverted OpenGL framebuffer to 32-bit colour mode. We're using Blargg
effects, so we may as well get the full fidelity out of it. Besides,
testing has shown that there's not much speed difference between 16
and 32 bit modes, making me think that 16-bit is probably be swizzled
to 32-bit anyway.
Bumped release date to June 1, version to rc1.
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- Alt-9 / Shift-Alt-9 selects (increases/decreases) between
the various adjustables
- Alt-0 / Shift-Alt-0 increases/decreases the actual values for
the previously selected adjustable
Cleaned up the API a little, moving some stuff from Console to
FrameBuffer class. I think we're due for a pretty major
reorganization of parts of the codebase very soon.
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'tv_scaninter' option. Added Alt-8 keypress to toggle this; still
TODO is add a UI item for it.
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left to do, but the basic functionality is now there. Alt 1 - Alt 6
selects among TV modes as follows: off, composite, svideo, rgb, bad and
custom. The latter is just composite at this point; there's no code to
actually change specific adjustables yet. Alt 7/Shift-Alt 7 increases/
decreases scanline blend intensity (20% - 100%).
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make another pass at getting rid of raw pointers. As I've come
to realize over the years (and in particular with reading the C++11
standard), raw pointers are evil and error-prone. So this fixes
some of them at least.
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rendering code. This is just infrastructure for now. Pressing
Alt-f will toggle the filtering, but there's no output yet.
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these logs!
Moved TODO and Credits info directly to the webpage, where it will hopefully
be easier to maintain.
Fixed 'crackling' sound when loading a new ROM, introduced with the 3.5
sound restructuring. It looks like stale data was being loaded by the
sound processing callback. As well, moved the computation of certain
division variables from the sound callback to the framerate re-calculator
(where it's recomputed 1/5 of the time or less).
Updated AboutDialog with info about Stella DonationWare status, and active
members of Stella development.
Updated OSX in-app HTML documentation about Stella DonationWare status.
Bumped version # to 3.5.1_svn, and the process starts again.
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mean 'hardware-accelerated, double-buffered'. This distinction
is important, since eventually such a mode won't necessarily be
OpenGL-backed (it might be Direct3D, OpenGLES, etc).
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distinct GUI vs non-GUI (aka TIA) classes. This makes it easy to proceed
from this point on, since I don't have to worry about breaking one mode
when making changes to the other.
Preliminary support for TIA scanlines in OpenGL mode. It's disabled for
now, but is progressing nicely. This will be part of the new TV effects
in the next major release.
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several cases (fixes problems when moving the mouse too fast or
when changing between video modes). Added extra signature to the
bankswitch autodetection for the 4A50 scheme.
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Updated documentation with info about 2600-daptor, including
usage and its creator. Also included more in-depth explanation
for the various controller types.
Errors from the Thumb ARM emulation code are now caught as exceptions,
and thrown to the parent class instead of calling exit() and simply
crashing Stella. For now, the messages are simply printed and
emulation continues. This will be expanded to show a detailed crash
log in the debugger, and offer the option to exit the ROM.
Removed most of the menus from the OSX port. They weren't being
maintained anyway, and most of them didn't work. I've modelled this
on the way other cross-platform OSX programs work (notably, ScummVM).
Basically, there are menus for exit and help, but otherwise you
should use the menuing system in the application itself.
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- mouse can now emulate joystick, booster-grip and driving controllers
- digital and mouse sensitivity for paddles can now be tweaked
separately, and have a greater range
- the mouse now correctly honours its controller setting, and only
controls a device on one one port (not both at the same time)
Added support for 2600-daptor device. Credit for creator of device
is forthcoming. This device is basically an updated Stelladaptor,
with improved handling for paddle data.
Grabmouse functionality is no longer user-definable; the mouse is
always grabbed while playing a game, and released otherwise.
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the given screen. This is allowed in windowed mode, since the window
manager normally takes care of it. In the case of fullscreen mode, however,
it is never allowed, and an error message is shown.
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the various header files. Basically, I'm following advice from
Effective C++, and including only what's absolutely necessary. For
definitions that don't need to be included, the designation 'class xxx'
is used instead. This could potentially lead to faster compile times.
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screen size (vertically), the window will open in partially truncated mode,
where the top of the PAL image is cut off. This normally won't be a problem,
as it's mostly blank space anyway.
App window centering is now honoured when changing video zoom levels, not
just when changing eventhandler states.
Bumped version # for another test release.
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window mode. Using modes smaller that 640x480 should now work in
all cases when using the 'maxres' commandline argument. Also, the
lower limit of 320x240 is now strictly enforced in all cases.
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key. This enables automatically taking snapshots every X seconds
while in emulation mode. The interval (in seconds) can be set
with the 'ssdelay' commandline argument.
Some minor cleanups to the EventHandler methods, making them
const when possible.
Added latest DPC+ changes from Spiceware.
Fixed issue with ROMs that run entirely from ZP RAM; no disassembly
was being generated when entering the debugger. For now, this
special case is detected, and the disassembly is generated for
the code that ran before the PC entered ZP RAM space. Eventually,
this will go away when the Distella fully supports disassembling
below 0x1000.
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'Stephen Anthony' (aka, me) in addition to Brad Mott as copyright
holders for Stella. I think I've been with the project long
enough now (almost 10 years) to justify being specifically mentioned
above and beyond 'the Stella Team'.
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320x240 (the minimum that Stella supports). On 'small' systems using
1x video mode, this means most NTSC games will open in a window of size
of 320x240, even though the native size is normally 320x210 (or so).
In these cases, the image will be centered vertically.
Added FrameBuffer::invalidate(), used to signal that the complete
framebuffer can be trashed and entirely written over. This is only
active in software mode for now, where it fixes 'overdraw' problems
with 320x240 dialogs drawn underneath 320x210 TIA images.
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The license file is actually named 'License.txt', not 'license'
The 'Stella Team' has a capital T, not lowercase.
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controlled by 'tiafloat', which has now been removed. Now, all
undriven pins take on the last value on the databus. This fixes a bug
in those reads where bit 6 or bits 6 & 7 are also undriven (previously,
these bits would always be zero, and only bits 0-5 were from lastdatabus.
Added new commandline argument 'tiadriven', which defaults to false.
In this default case, relevant bits take on values from the databus.
If true, relevant bits still take on databus values, but some are
randomly driven high as well. This helps to expose bugs when
developers assume the values for undriven/floating bits.
Added 'uimessages' commandline argument and associated UI item. When
disabled, messages which are normally shown in-game are disabled.
Certain messages which indicate a serious error are still shown, however.
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where it more properly belongs. The greyed values are now from PAL
color-loss, which is also calculated for NTSC (though it's never actually
used in NTSC mode for regular rendering). This also fixes problems with
debugger state files being saved with greyed values, and sometimes having
the frame greyed twice (hence making it impossible to see). It should
also result in a slight speed increase, since some code has been taken
out of the TIA rendering fast path.
Added electron beam indicator the the TIA output in the debugger.
Basically, it's just a small square indicating where drawing will
start for the next instruction.
Fixed TIA output in the debugger so that right-clicking and selecting
'fill to scanline' actually works without first having to manually
enter partial frame mode.
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the ones that bankswitch in RAM, since I don't know what should happen there.
Added 'exitlauncher' commandline argument, which specifies the functionality
of the 'Exit to launcher' action; should exiting a game actually go back to
the launcher, or exit the program entirely. Also added a UI item in UIDialog
for this.
Reworked the fullscreen/windowed handling in FrameBuffer, simplifying the
logic for determining whether the SDL surface is actually in fullscreen
or not.
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stephena