Some benchmarking shows that on SSE systems it only harms performance and compared to the intrinsics version the gains are too marginal for something this infrequently called.
Doing 100000 calls of DoBlending results in a 5 ms decrease of using assembly vs intrinsics on a 3.4 GHz Core i7, meaning that even on a computer that is 10x slower you can still do 1000 or so blends per frame without a speed hit.
The only reason this even existed was that ZDoom's original VC projects used __fastcall. The CMake generated project do not, they stick to __cdecl.
Since no performance gain can be seen by using __fastcall the best course of action is to just remove all traces of it from the source and forget that it ever existed.
- Fixed: When locating WhiteIndex and BlackIndex in the palette index 0 was skipped.
- Fixed: When filling an area black for vid_fps or pillarbox/letterbox use GPalette.BlackIndex instead of assuming palette index 0 is black.
SVN r3807 (trunk)
unsigned integer that can use all 32 bits. They must therefore use
the unsigned mul instruction rather than the signed imul instruction.
- Fixed several signed/unsigned comparison and possibly uninitialized
variable warnings flagged by GCC.
SVN r1965 (trunk)
It must set it to 0 if the alpha is 0 to avoid problems with special
colormap detection.
- Changed SPECIALCOLORMAP_MASK again so that it does not interfere with
any valid setting. It must use a value with a 0-alpha because these
are guaranteed not to be produced by the DECORATE code elsewhere.
- Fixed precision issues with AddFixedColormap's search for identical colormaps.
- Added custom colormap support to texture composition code.
- Fixed initialization of FSpecialColormap::GrayscaleToColor. This is not
a mapping from the palette but from a [0,255] grayscale ramp and used to
apply colormaps to true color images for texture composition.
SVN r1867 (trunk)
which could cause crashes.
- Added custom special colormaps to DECORATE.
- Cleaned up special colormap code and removed lots of dependencies on the
knowledge of the tables' contents.
SVN r1860 (trunk)
completely ignore them, either).
- Separated light level fixing out of player_t's fixedcolormap parameter.
Using a fixed light level (e.g. PowerTorch) will no longer wipe out
colored lighting.
- Moved the blending rectangle drawing into a separate discrete stage, since
doing it while copying the 3D view window to the display now blends
underneath the weapon instead of on top of it.
- Consolidated the special colormaps into a single 2D table.
- Tweaked the special colormaps slightly to make the true color results more
closely match the paletted approximations.
- fb_d3d9_shaders.h was getting unwieldy, so I moved the shaders out of the
executable and into zdoom.pk3. Shaders are still precompiled so I don't need
to pull in a dependancy on D3DX.
- Added a few more shaders to accomodate drawing weapons with all the in-game
lighting models. These are accessed with the new DrawTexture tags
DTA_SpecialColormap and DTA_ColormapStyle.
- Player weapon sprites are now drawn using Direct3D and receive all the
benefits thereof.
SVN r1858 (trunk)
which caused roundoff errors that made it less than 1/3 effective.
- Added support for "RRGGBB" strings to V_GetColor.
- Fixed: Desaturation maps for the TEXTURES lump were calculated incorrectly.
- Changed GetSpriteIndex to cache the last used sprite name so that the code
using this function doesn't have to do it itself.
- Moved some more code for the state parser into p_states.cpp.
- Fixed: TDeletingArray should not try to delete NULL pointers.
SVN r1312 (trunk)
so that all files are included by a central one instead of compiling
each one separately. This speeds up the compilation process by 25%
when doing a complete rebuild in Visual C.
- Cleaned up more header dependencies.
SVN r1226 (trunk)
- Removed AT_GAME_SET because it's no longer used anywhere.
- Converted the last remaining global classes to DECORATE.
- Fixed: Inventory.PickupFlash requires an class name as parameter not an
integer. Some Hexen definitions got it wrong.
- Converted Hexen's Pig to DECORATE.
- Replaced the ActorInfo definitions of all internal inventory classes with
DECORATE definitions.
- Added option to specify a powerup's duration in second by using a negative
number.
SVN r1137 (trunk)
registers AMD64 provides, this routine still needs to be written as self-
modifying code for maximum performance. The additional registers do allow
for further optimization over the x86 version by allowing all four pixels
to be in flight at the same time. The end result is that AMD64 ASM is about
2.18 times faster than AMD64 C and about 1.06 times faster than x86 ASM.
(For further comparison, AMD64 C and x86 C are practically the same for
this function.) Should I port any more assembly to AMD64, mvlineasm4 is the
most likely candidate, but it's not used enough at this point to bother.
Also, this may or may not work with Linux at the moment, since it doesn't
have the eh_handler metadata. Win64 is easier, since I just need to
structure the function prologue and epilogue properly and use some
assembler directives/macros to automatically generate the metadata. And
that brings up another point: You need YASM to assemble the AMD64 code,
because NASM doesn't support the Win64 metadata directives.
- Added an SSE version of DoBlending. This is strictly C intrinsics.
VC++ still throws around unneccessary register moves. GCC seems to be
pretty close to optimal, requiring only about 2 cycles/color. They're
both faster than my hand-written MMX routine, so I don't need to feel
bad about not hand-optimizing this for x64 builds.
- Removed an extra instruction from DoBlending_MMX, transposed two
instructions, and unrolled it once, shaving off about 80 cycles from the
time required to blend 256 palette entries. Why? Because I tried writing
a C version of the routine using compiler intrinsics and was appalled by
all the extra movq's VC++ added to the code. GCC was better, but still
generated extra instructions. I only wanted a C version because I can't
use inline assembly with VC++'s x64 compiler, and x64 assembly is a bit
of a pain. (It's a pain because Linux and Windows have different calling
conventions, and you need to maintain extra metadata for functions.) So,
the assembly version stays and the C version stays out.
- Removed all the pixel doubling r_detail modes, since the one platform they
were intended to assist (486) actually sees very little benefit from them.
- Rewrote CheckMMX in C and renamed it to CheckCPU.
- Fixed: CPUID function 0x80000005 is specified to return detailed L1 cache
only for AMD processors, so we must not use it on other architectures, or
we end up overwriting the L1 cache line size with 0 or some other number
we don't actually understand.
SVN r1134 (trunk)
- Reorganized the HackHack code so that the image creation was moved into
MakeTexture. This was necessary because Unload deleted the pixel data
and broke the whole thing.
- Fixed: FPatchTexture::HackHack and FDoomStatusbarTexture::DrawToBar used the
obsolete and uninitialized variable Near255.
- Removed the span creation code specific to FPatchTexture. It only has an
advantage when the lump has already been loaded in memory but since that
is no longer the case now the generic version in FTexture is actually better.
- Changed: FTexture::CopyToBlock no longer uses the spans but the pixel buffer
directly. Since most patches in multipatch textures are non transparent
the added overhead from creating the spans far outweighs any savings they
might provide. It is also simpler to handle for mirrored or rotated patches now.
- Changed: Textures only create the spans when really needed. Flats and native
textures, for example, do not and it only created needless overhead that they
were always created along with the pixel buffer.
- Made use of player and actor variables consistent in a_hereticweaps.cpp.
- Fixed: A few calls to P_SpawnPlayerMissile passed 0 as angle
SVN r911 (trunk)
- Added .txt files to the list of types (wad, zip, and pk3) that can be
loaded without listing them after -file.
- Fonts that are created by the ACS setfont command to wrap a texture now
support animated textures.
- FON2 fonts can now use their full palette for CR_UNTRANSLATED when drawn
with the hardware 2D path instead of being restricted to the game palette.
- Fixed: Toggling vid_vsync would reset the displayed fullscreen gamma to 1
on a Radeon 9000.
- Added back the off-by-one palette handling, but in a much more limited
scope than before. The skipped entry is assumed to always be at 248, and
it is assumed that all Shader Model 1.4 cards suffer from this. That's
because all SM1.4 cards are based on variants of the ATI R200 core, and the
RV250 in a Radeon 9000 craps up like this. I see no reason to assume that
other flavors of the R200 are any different. (Interesting note: With the
Radeon 9000, D3DTADDRESS_CLAMP is an invalid address mode when using the
debug Direct3D 9 runtime, but it works perfectly fine with the retail
Direct3D 9 runtime.) (Insight: The R200 probably uses bytes for all its
math inside pixel shaders. That would explain perfectly why I can't use
constants greater than 1 with PS1.4 and why it can't do an exact mapping to
every entry in the color palette.
- Fixed: The software shaded drawer did not work for 2D, because its selected
"color"map was replaced with the identitymap before being used.
- Fixed: I cannot use Printf to output messages before the framebuffer was
completely setup, meaning that Shader Model 1.4 cards could not change
resolution.
- I have decided to let remap palettes specify variable alpha values for
their colors. D3DFB no longer forces them to 255.
- Updated re2c to version 0.12.3.
- Fixed: A_Wander used threshold as a timer, when it should have used
reactiontime.
- Fixed: A_CustomRailgun would not fire at all for actors without a target
when the aim parameter was disabled.
- Made the warp command work in multiplayer, again courtesy of Karate Chris.
- Fixed: Trying to spawn a bot while not in a game made for a crashing time.
(Patch courtesy of Karate Chris.)
- Removed some floating point math from hu_scores.cpp that somebody's GCC
gave warnings for (not mine, though).
- Fixed: The SBarInfo drawbar command crashed if the sprite image was
unavailable.
- Fixed: FString::operator=(const char *) did not release its old buffer when
being assigned to the null string.
- The scanner no longer has an upper limit on the length of strings it
accepts, though short strings will be faster than long ones.
- Moved all the text scanning functions into a class. Mainly, this means that
multiple script scanner states can be stored without being forced to do so
recursively. I think I might be taking advantage of that in the near
future. Possibly. Maybe.
- Removed some potential buffer overflows from the decal parser.
- Applied Blzut3's SBARINFO update #9:
* Fixed: When using even length values in drawnumber it would cap to a 98
value instead of a 99 as intended.
* The SBarInfo parser can now accept negatives for coordinates. This
doesn't allow much right now, but later I plan to add better fullscreen
hud support in which the negatives will be more useful. This also cleans
up the source a bit since all calls for (x, y) coordinates are with the
function getCoordinates().
- Added support for stencilling actors.
- Added support for non-black colors specified with DTA_ColorOverlay to the
software renderer.
- Fixed: The inverse, gold, red, and green fixed colormaps each allocated
space for 32 different colormaps, even though each only used the first one.
- Added two new blending flags to make reverse subtract blending more useful:
STYLEF_InvertSource and STYLEF_InvertOverlay. These invert the color that
gets blended with the background, since that seems like a good idea for
reverse subtraction. They also work with the other two blending operations.
- Added subtract and reverse subtract blending operations to the renderer.
Since the ERenderStyle enumeration was getting rather unwieldy, I converted
it into a new FRenderStyle structure that lets each parameter of the
blending equation be set separately. This simplified the set up for the
blend quite a bit, and it means a number of new combinations are available
by setting the parameters properly.
SVN r710 (trunk)
- Fixed: The PlayerSpeedTrail must copy the player's scaling information
(from Skulltag)
- Added r_maxparticles CVAR from Skulltag.
- Changed PCX loader so that it always loads the last 768 bytes of 8 bit graphics as a palette
SVN r447 (trunk)
- The stat meters now return an FString instead of sprintfing into a fixed
output buffer.
- NOASM is now automatically defined when compiling for a non-x86 target.
- Some changes have been made to the integral types in doomtype.h:
- For consistancy with the other integral types, byte is no longer a
synonym for BYTE.
- Most uses of BOOL have been change to the standard C++ bool type. Those
that weren't were changed to INTBOOL to indicate they may contain values
other than 0 or 1 but are still used as a boolean.
- Compiler-provided types with explicit bit sizes are now used. In
particular, DWORD is no longer a long so it will work with both 64-bit
Windows and Linux.
- Since some files need to include Windows headers, uint32 is a synonym
for the non-Windows version of DWORD.
- Removed d_textur.h. The pic_t struct it defined was used nowhere, and that
was all it contained.
SVN r326 (trunk)
data file.
- Removed the setcolor CCMD. It's been obsolete for years, ever since color-
aware cvars were added.
- Changed V_GetColorStringByName() to return an FString, because it did a
copystring() call.
- Extended V_GetColorFromString() so that it accepts HTML-style #RRGGBB and
#RGB color strings.
SVN r313 (trunk)
intelligently pick the value to use for TranslucentLine's second argument.
- Added a queryiwad_key cvar to control which key can force the IWAD selection
to appear. It can be either "shift" or "control". Any other value will
disable its functionality.
- Fixed: A_SkullPop() and A_FreezeDeathChunks() did not transfer the player's
inventory to the new dismembered head "player".
SVN r268 (trunk)
- Fixed: A classic decorate FakeInventory's PickupText was never freed.
- Fixed: Colored lights were never freed.
- Fixed: When a dehacked patch was applied, the dehacked StateMap was never
freed.
- Removed termdone checks around atterm(S_ClearSoundData) and
atterm(S_Shutdown) because atterm() already checks for duplicates.
- Fixed: S_ClearSoundData() should unload all sounds before it clears S_sfx.
- Fixed: AltSoundRenderer::LoadSound() didn't check if the sound had already
been loaded and lost the old sound data if it had been.
- Fixed: FinishDehPatch() needlessly duplicated the new DehackedPickup's name.
- Fixed: PatchStrings() allocated a private string and never freed it.
SVN r183 (trunk)
- Fixed: FDoomEdMap needed a destructor.
- Fixed: Decal animators were never freed.
- Fixed: Colormaps were never freed.
- Fixed: Memory allocated in R_InitTranslationTables() was never freed.
- Fixed: R_InitParticles() allocated way more memory than it needed to. (And the
particle memory was never freed, either.)
- Fixed: FMetaTable::FreeMeta() should use delete[] to free string metadata.
- Fixed: FConfigFile::ClearCurrentSection() must cast the entry to a char *
before deleting it, because that's the way it was allocated.
- Fixed definitions of DeadZombieMan and DeadShotgunGuy in doom/deadthings.txt.
Skip_super resets the dropitem list, so having it after "DropItem None" is
pointless.
- Fixed: Decorate DropItem information was never freed.
- Fixed: FinishStates() allocated even 0-entry state arrays.
- Fixed: Default actor instances were never freed.
- Fixed: FRandomSoundList never freed its sound list.
- Fixed: Level and cluster strings read from MAPINFO were never freed.
- Fixed: Episode names were never freed.
- Fixed: InverseColormap and GoldColormap were never freed. Since they're always
allocated, they can just be arrays rather than pointers.
- Fixed: FFont destructor never freed any of the character data or the font's name.
- Fixed: Fonts were not freed at exit.
- Fixed: FStringTable::LoadLanguage() did not call SC_Close().
- Fixed: When using the -iwad parameter, IdentifyVersion() did not release the
buffer it created to hold the parameter's path.
SVN r88 (trunk)
its tiles are loaded from the same directory.
- RFF files now load their entire directories into the lumplist.
- Added char * and const char * type coversions for FString, so FStrings can be
freely passed to functions expecting C strings. (Except varargs functions,
which still require manually fetching the C string out of it.)
- Renamed the name class to FName.
- Renamed the string class to FString to emphasize that it is not std::string.
SVN r74 (trunk)
- Removed doom.x, heretic.x and strife.x from the SVN repository. These
are generated files.
- Fixed: A_PainDie has to check whether a valid target exists before
calling IsFriend.
- Fixed: FDecalLib::FindAnimator needs a signed counter to work properly.
May 1, 2006 (Changes by Graf Zahl)
- Added support for game specific pickup messages, if only to be able
to define Raven's invulnerability item in DECORATE.
- Removed A_TreeDeath because it is no longer used.
- Fixed: When picking up a PowerupGiver for an active powerup the
blend color and the duration were transferred to a temorary item
and never took effect. They have to be trnasferred to the newly created
powerup item before trying to give it to the player, not afterward.
- Made the colormap of the InvulnerabilitySphere item specific.
The base power class still needs to have its color adjusted
per game though and since Raven's invulnerability item is used in both
Hexen and Heretic it can't define its own colormap/blend.
- Separated the invulnerability colormaps from the game being played
and made them item specific. They can also be specified as regular
blend colors in DECORATE now.
- Converted a_hereticarmor.cpp and most of a_doomartifacts.cpp,
a_hereticartifacts.cpp and a_heretickeys.cpp to DECORATE.
- Changed the Soulsphere to be a real health item with the Dehacked
modifications made in d_dehacked.cpp as for most other items which
need to be adjusted.
- Added IF_BIGPOWERUP flag to AInventory to expose the RESPAWN_SUPER
dmflag to DECORATE. Also removed the now obsolete ShouldRespawn methods
from AInvulnerabilitySphere and ABlurSphere.
- Converted a_splashes.cpp to DECORATE.
- Converted most of a_debris.cpp to DECORATE.
SVN r73 (trunk)
