This series implements HOST_DATA as a blit source enabling text rendering in
xterm under X.org with 2D acceleration.
The series builds up functionality incrementally:
* Patches 1-2: Scissor rectangle clipping registers and implementation
* Patches 3-4: Additional register support needed for HOST_DATA
* Patches 5-7: HOST_DATA register writes, color expansion, and final blit
implementation
Tested with xterm on X.org using the r128 driver built with
--disable-dri (MMIO mode).
Changes from v1:
- Split monolithic patch into 7 logical patches as requested
- Integrate HOST_DATA blit into existing ati_2d_blt()
- Add fallback implementation for non-pixman builds
- Remove unnecessary initialization in realize (kept in reset only)
- Fixed DP_GUI_MASTER_CNTL mask to preserve GMC_SRC_SOURCE field
- Implement scissor clipping
Chad Jablonski (7):
ati-vga: Add scissor clipping register support
ati-vga: Implement scissor rectangle clipping for 2D operations
ati-vga: Implement foreground and background color register writes
ati-vga: Fix DP_GUI_MASTER_CNTL register mask
ati-vga: Implement HOST_DATA register writes
ati-vga: Add expand_colors() helper for monochrome color expansion
ati-vga: Implement HOST_DATA blit source with color expansion
hw/display/ati.c | 77 ++++++++++++-
hw/display/ati_2d.c | 257 +++++++++++++++++++++++++++++++++---------
hw/display/ati_dbg.c | 9 ++
hw/display/ati_int.h | 6 +
hw/display/ati_regs.h | 34 +++++-
5 files changed, 320 insertions(+), 63 deletions(-)
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2.51.0
