Check system integrity by explicitly
releasing the font engine.
JIRA issue: CORE-9616
- Use RTL_STATIC_LIST_HEAD against
g_FontListHead and
g_FontCacheListHead variables and
omit initialization of them.
- Implement FreeFontSupport function.
- Call FreeFontSupport in win32k!
DriverUnload function.
- Fix some usages of
CONTAINING_RECORD macro.
Improve checks in AlphaBlend and TransparentBlt functions: check whether DCSrc is of DCTYPE_INFO also, to fail in that case properly too.
Spotted by PVS-Studio analysis.
Reference: https://pvs-studio.com/en/blog/posts/cpp/1122/.
Support emoji characters and minor characters.
JIRA issue: CORE-19030
NOTE: Not every emoji is supported yet (No ZWJ support). Surrogate pairs only.
NOTE: This feature only works if the appropriate font is selected.
- Add IS_HIGH_SURROGATE and
IS_LOW_SURROGATE macros.
- Add Utf32FromSurrogatePair helper function
to convert a surrogate pair to a UTF-32 code
point.
- Convert the surrogate pairs in the text in
TextIntGetTextExtentPoint, IntGetTextDisposition,
and IntExtTextOutW functions.
Slight performance improvement.
JIRA issue: CORE-15554
- Add bNoTransform variable.
- Check whether mat is identity matrix.
- If so, then don't do FT_Vector_Transform.
Slight performance improvement. STACK_TEXT_BUFFER_SIZE = 100 was too small
for long text. This PR can reduce unnecessary buffer allocations in NtGdiExtTextOutW
function.
JIRA issue: CORE-15554
- Change STACK_TEXT_BUFFER_SIZE to 512.
The code itself isn't wrong but we're entirely missing the logic needed
to make it work. This leads to spontaneous crashes with video drivers and
various unity games.
When I am implementing the IME soft keyboard (#6021 and #6036),
I noticed an issue with PatBlt function.
- Fix the rectangle coordinates when the value was
negative in NtGdiPatBlt function.
- Fix NC_DrawFrame function.
- Fix UserDrawWindowFrame function.
CORE-19334
According to the results of CImage testcase,
the top byte of the GetPixel() return value is
zero if the return is a valid color.
Do bitwise-AND operation if the color value is valid.
CORE-19008
The code was passing 0 instead of SECTION_INHERIT::ViewUnmap (2). 0 isn't even a proper constant to be used here. It worked, because MmMapViewOfSection only compares against ViewShare (1) and treats everything else as ViewUnmap.
bmBits is only used and assigned on output. It points (holds the address)
to the array of DIB bit values. The "Bits" parameter is however a pointer
to a variable that will receive the address of that array.
So it makes no sense to initially assign bmBits to the value of the Bits
parameter...
I intend to port back the combined work of Thomas Faber and Serge Gautherie in context of CORE 14271.
Both developers fixed wrong retval evaluations for SeSinglePrivilegeCheck() and RtlCreateUnicodeString().
Both functions do return a BOOLEAN, and therefore using NTSTATUS() on them is wrong.
Those bugs have been fixed at multiple places. That is long gone.
But Serge fixed his locations a bit more elegantly, without the need for additional variables.
Therefore this addendum adapts a few of Thomas locations to the improved Serge-ified style.
Yes: I intentionally used a space instead of a minus after the mentioned CORE 14271,
as I don't want that pure stylistic addendum to be linked with the initial ticket anymore.
That would be overkill.
Many thanks for Simone Lombardo for pointing to the code needing attention
and providing a working proof-of-concept solution.
CORE-12377
CORE-18084
CORE-13889
CORE-17932
[ENG] Implement DirectDraw management in switch display mode functions
(e.g. resolution change, color depth, display frequency etc.):
- Switch DirectDraw instances between the two PDEVs (the current one and
the new one allocated by ourselves) by calling dxg!DxDdDynamicModeChange
function.
- Suspend them before and resume after the display mode switch, by calling
dxg!DxDdsuspendDirectDraw and dxg!DxDdResumeDirectDraw appropriately.
We currently don't have these functions implemented, but MS DXG has, so
it allows to properly manage DirectDraw PDEVs using this driver, similarly
to Windows.
My analysis confirms that these functions are always called in XP/2k3 on
display mode switch, even when there is no any DirectX app running at the
moment. Analyzing their prototypes show that my guesses are correct.
- Initialize hDev and dhpdev members for EDD_DIRECTDRAW_GLOBAL for newly
created surfaces, switch them during mode change and re-initialize after
it also. They are commonly used by DirectDraw stack.
In addition, enable DirectDraw for old and new PDEVs, by calling
dxg!DxDdEnableDirectDraw function.
[NTDDRAW] Additionally, fix usage of DirectDraw lock count in the PDEVOBJ
structure.
- Enable cDirectDrawDisableLocks member for storing its value, instead of
DxDd_nCount, which is marked as ROS-specific.
- Use it in win32k!DxEngGet/SetHdevData for getting/setting DirectDraw
count appropriately.
My analysis also shows that in Windows, the PDEVOBJ::cDirectDrawDisableLocks
method calls DxEngGetHdevData with type 8, which corresponds to our DxDd_nCount.
So there are no doubts that this member is used there.
- Rename DxEngGetHdevData_dd_count alias of type 8 to DxEngGetHdevData_dd_locks,
to match more accurately an actual member name. Update the enumeration
and fix all code parts appropriately.
All these changes allow to properly change display mode during executing
DirectDraw applications, when they try to switch in full-screen mode.
At least a bugcheck that happened before my changes, does no longer appear.
There are still some games that don't run correctly, as if there is no
3D acceleration (which actually exists). This requires further investigations.
CORE-18221
Load the DirectX graphics kernel driver (dxg.sys) by win32k at WINSRV
initialization time, in NtUserInitialize(). Keep it always loaded in
memory, as on Windows, instead of loading it only by DirectX dlls.
This fixes the problem of acessing this driver: we need only to call
DxDdEnableDirectDraw() and do other stuff when DirectDraw/Direct3D is
required by anything. In other cases, it is called from win32k PDEV
functions when changing display mode (as in Windows). Since it's used
by other things too, it needs to be always loaded.
Otherwise, if it's not loaded, its APIs are not accessible when needed,
and execution fails.
For example, it fixes display mode change problem in VMWare, when a
new mode fails to be applied. Indeed, when it manages DirectDraw stuff,
it calls DXG routines, and therefore fails if dxg.sys isn't loaded
in memory at this moment.
- Implement InitializeGreCSRSS() initialization routine, that initializes
supplemental NTGDI/GRE data once CSRSS and WINSRV are loaded:
* Call DxDdStartupDxGraphics() inside it, which loads dxg.sys.
* Additionally, move fonts and language ID initialization there, from
win32k!DriverEntry. Confirmed by analysis on Windows.
- Call InitializeGreCSRSS() in NtUserInitialize() main initialization routine
(called by WINSRV initialization).
Moved to NTGDI from previously NTUSER place:
Co-authored-by: Hermès Bélusca-Maïto <hermes.belusca-maito@reactos.org>
Currently, LDEVOBJ_bUnloadImage always returns FALSE due to missing functionality in ntoskrnl.
LDEVOBJ_vFreeLDEV contains an assert that driver is correctly unloaded before freeing it.
Prevent this assert by calling LDEVOBJ_vFreeLDEV only if LDEVOBJ_bUnloadImage succeed.
This can be easily triggered if DrvEnableDriver function (called in LDEVOBJ_bEnableDriver) fails.
This allows DevExpress Ribbon Notepad sample to start.
Also add a fat DPRINT1 suggested by Timo Kreuzer,
because there is a lot wrong in the code.
CORE-18091 CORE-18558
Rotation and shearing transformation of font/text is now available. Retrial of PR #1207.
- Rename ftGdiGetTextWidth as IntGetTextDisposition and add a Y parameter.
- Apply lfEscapement values (by multiplying matrices).
- Add IntEngFillPolygon and IntEngFillBox helper functions.
CORE-11848
- Add lfWidth member into FONTGDI structure.
- Delete IntWidthMatrix function.
- Fix IntRequestFontSize behavior for processing lfWidth value.
- Apply lfWidth in GetTextMetrics and GetCharWidth.
- Ignore the XFORM values in GetTextMetrics and GetCharWidth.
CORE-11848
- Modify FONT_CACHE_ENTRY structure to use hash.
- Use hash in ftGdiGlyphCacheGet and ftGdiGlyphCacheSet functions.
- Reduce function call overheads by using FONT_CACHE_ENTRY, in getting glyph.
CORE-11848
- Use FT_Matrix instead of MATRIX in FONT_CACHE_ENTRY structure.
- Use FtMatrixFromMx and FT_Set_Transform instead of FtSetCoordinateTransform.
CORE-11848
That way, we don't have anymore the VGA device together with primary device in device list.
Change also EngpUnlinkGraphicsDevice() function to add back VGA device to device list
when removing its parent from device list.
CORE-18522
- Delete some IntRequestFontSize function calls.
- Enable cache on font size requests.
- Add two members into FONTGDI structure, for font size cache.
CORE-15554
