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973a724eb0
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Paolo Bonzini 973a724eb0 vga: implement horizontal pel panning in graphics modes 
This implements smooth scrolling, as used for example by Commander Keen
and Second Reality.

Unfortunately, this is not enough to avoid tearing in Commander Keen,
because sometimes the wrong start address is used for a frame.
On real EGA, the panning register is sampled on every line, while
the display start is latched for the next frame at the start of the
vertical retrace.  On real VGA, the panning register is also latched,
but at the end of the vertical retrace.  It looks like Keen exploits
this by only waiting for horizontal retrace when setting the display
start, but implementing it breaks the 256-color Keen games...

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-01-18 10:43:13 +01:00
..
9pfs * configure: use a native non-cross compiler for linux-user 2024-01-04 19:55:20 +00:00
acpi * configure: use a native non-cross compiler for linux-user 2024-01-04 19:55:20 +00:00
adc hw/adc: Constify VMState 2023-12-29 11:17:30 +11:00
alpha hw/pci: modify pci_setup_iommu() to set PCIIOMMUOps 2023-11-03 09:20:31 +01:00
arm target-arm queue: 2024-01-11 11:05:44 +00:00
audio hw/audio/sb16: Do not migrate qdev properties 2024-01-05 16:20:15 +01:00
avr hw/avr/atmega: Fix wrong initial value of stack pointer 2023-11-28 14:27:12 +01:00
block Rename "QEMU global mutex" to "BQL" in comments and docs 2024-01-08 10:45:43 -05:00
char hw/char: Constify VMState 2023-12-29 11:17:30 +11:00
core numa: Skip invalidation of cluster and NUMA node boundary for qtest 2024-01-12 14:02:23 +00:00
cpu hw/cpu/cluster: Cleanup unused included header in cluster.c 2024-01-05 16:20:15 +01:00
cris Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
cxl meson: remove CONFIG_ALL 2023-12-31 09:11:28 +01:00
display vga: implement horizontal pel panning in graphics modes 2024-01-18 10:43:13 +01:00
dma hw/dma: Constify VMState 2023-12-29 11:17:30 +11:00
gpio hw/gpio: Constify VMState 2023-12-29 11:17:30 +11:00
hppa hw/core/machine: Constify MachineClass::valid_cpu_types[] 2023-11-20 15:30:59 +00:00
hyperv hw/hyperv: Constify VMState 2023-12-29 11:17:30 +11:00
i2c hw/i2c: Constify VMState 2023-12-29 11:17:30 +11:00
i386 hw/i386/acpi-microvm.c: Use common function to add virtio in DSDT 2024-01-10 18:47:46 +10:00
ide hw/ide: Constify VMState 2023-12-29 11:17:30 +11:00
input hw/input: Constify VMState 2023-12-29 11:17:30 +11:00
intc pull-loongarch-20240111 2024-01-11 15:19:14 +00:00
ipack hw/ipack: Constify VMState 2023-12-29 11:17:30 +11:00
ipmi hw/ipmi: Constify VMState 2023-12-29 11:17:30 +11:00
isa hw/isa: Constify VMState 2023-12-29 11:17:30 +11:00
loongarch hw/intc/loongarch_extioi: Add dynamic cpu number support 2024-01-11 19:22:47 +08:00
m68k q800: move dp8393x_prom memory region to Q800MachineState 2024-01-11 11:39:26 +01:00
mem meson: remove CONFIG_ALL 2023-12-31 09:11:28 +01:00
microblaze hw/microblaze: Clean up local variable shadowing 2023-09-29 10:07:16 +02:00
mips qemu/main-loop: rename QEMU_IOTHREAD_LOCK_GUARD to BQL_LOCK_GUARD 2024-01-08 10:45:43 -05:00
misc system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
net system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
nios2 target/nios2: Deprecate the Nios II architecture 2023-11-23 14:10:04 +00:00
nubus trace-events: Fix the name of the tracing.rst file 2023-09-08 13:08:51 +03:00
nvme hw/nvme: Clean up local variable shadowing in nvme_ns_init() 2023-09-29 10:07:20 +02:00
nvram hw/arm/virt-acpi-build.c: Migrate fw_cfg creation to common location 2024-01-10 18:47:46 +10:00
openrisc hw/openrisc: Constify VMState 2023-12-30 07:38:06 +11:00
pci * configure: use a native non-cross compiler for linux-user 2024-01-04 19:55:20 +00:00
pci-bridge * configure: use a native non-cross compiler for linux-user 2024-01-04 19:55:20 +00:00
pci-host hw/pci-host/gpex: Define properties for MMIO ranges 2024-01-10 18:47:47 +10:00
pcmcia hw/pcmcia/pxa2xx: Inline pxa2xx_pcmcia_init() 2023-10-27 12:48:57 +01:00
ppc qemu/main-loop: rename qemu_cond_wait_iothread() to qemu_cond_wait_bql() 2024-01-08 10:45:43 -05:00
rdma hw/rdma/vmw/pvrdma_cmd: Use correct struct in query_port() 2023-10-21 15:00:22 +03:00
remote Replace "iothread lock" with "BQL" in comments 2024-01-08 10:45:43 -05:00
riscv target/riscv: add zicbop extension flag 2024-01-10 18:47:47 +10:00
rtc hw/rtc: Constify VMState 2023-12-30 07:38:06 +11:00
rx hw/rx/rx62n: Use qdev_prop_set_array() 2023-11-10 18:19:13 +01:00
s390x hw/s390x/ccw: Replace dirname() with g_path_get_dirname() 2024-01-11 14:13:07 +01:00
scsi Rename "QEMU global mutex" to "BQL" in comments and docs 2024-01-08 10:45:43 -05:00
sd hw/sd: Constify VMState 2023-12-30 07:38:06 +11:00
sensor hw/sensor: Constify VMState 2023-12-30 07:38:06 +11:00
sh4 hw/other: spelling fixes 2023-09-21 11:31:16 +03:00
smbios meson: remove CONFIG_ALL 2023-12-31 09:11:28 +01:00
sparc target/sparc: Simplify qemu_irq_ack 2024-01-05 16:20:15 +01:00
sparc64 hw/sparc: Simplify memory_region_init_ram_nomigrate() calls 2024-01-05 16:20:15 +01:00
ssi hw/ssi: Constify VMState 2023-12-30 07:38:06 +11:00
timer hw/timer: Constify VMState 2023-12-30 07:38:06 +11:00
tpm hw/tpm: Constify VMState 2023-12-30 07:38:06 +11:00
tricore hw/tricore: Log failing test in testdevice 2023-09-29 08:28:02 +02:00
ufs hw/ufs: avoid generating the same ID string for different LU devices 2023-12-05 13:57:18 +09:00
usb migration 1st pull for 9.0 2024-01-05 13:35:25 +00:00
vfio vfio/migration: Add helper function to set state or reset device 2024-01-05 21:25:20 +01:00
virtio hw/arm/virt-acpi-build.c: Migrate virtio creation to common location 2024-01-10 18:47:46 +10:00
watchdog hw/watchdog: Constify VMState 2023-12-30 07:38:06 +11:00
xen cpus: check running not RUN_STATE_RUNNING 2024-01-04 09:52:42 +08:00
xenpv hw/xen: update Xen PV NIC to XenDevice model 2023-11-07 08:54:20 +00:00
xtensa trivial: Simplify the spots that use TARGET_BIG_ENDIAN as a numeric value 2023-09-08 13:08:52 +03:00
Kconfig hw/ufs: Initial commit for emulated Universal-Flash-Storage 2023-09-07 14:01:29 -04:00
meson.build hw/ufs: Initial commit for emulated Universal-Flash-Storage 2023-09-07 14:01:29 -04:00