mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-27 05:20:50 +00:00
c1076c3e13
The MemoryRegionSection contains enough information to access the RAM region underlying the framebuffer, and can be cached inside the display device. By doing this, the new framebuffer_update_memory_section function can enable dirty memory logging on the relevant RAM region. The function must be called whenever the stride or base of the framebuffer changes; a simple way to cover these cases is to call it on every full frame invalidation, which is a rare case. framebuffer_update_display now works entirely on a MemoryRegionSection, without going through cpu_physical_memory_map/unmap. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
#ifndef QEMU_FRAMEBUFFER_H
|
|
#define QEMU_FRAMEBUFFER_H
|
|
|
|
#include "exec/memory.h"
|
|
|
|
/* Framebuffer device helper routines. */
|
|
|
|
typedef void (*drawfn)(void *, uint8_t *, const uint8_t *, int, int);
|
|
|
|
/* framebuffer_update_memory_section: Update framebuffer
|
|
* #MemoryRegionSection, for example if the framebuffer is switched to
|
|
* a different memory area.
|
|
*
|
|
* @mem_section: Output #MemoryRegionSection, to be passed to
|
|
* framebuffer_update_display().
|
|
* @root: #MemoryRegion within which the framebuffer lies
|
|
* @base: Base address of the framebuffer within @root.
|
|
* @rows: Height of the screen.
|
|
* @src_width: Number of bytes in framebuffer memory between two rows.
|
|
*/
|
|
void framebuffer_update_memory_section(
|
|
MemoryRegionSection *mem_section,
|
|
MemoryRegion *root,
|
|
hwaddr base,
|
|
unsigned rows,
|
|
unsigned src_width);
|
|
|
|
/* framebuffer_update_display: Draw the framebuffer on a surface.
|
|
*
|
|
* @ds: #DisplaySurface to draw to.
|
|
* @mem_section: #MemoryRegionSection provided by
|
|
* framebuffer_update_memory_section().
|
|
* @cols: Width the screen.
|
|
* @rows: Height of the screen.
|
|
* @src_width: Number of bytes in framebuffer memory between two rows.
|
|
* @dest_row_pitch: Number of bytes in the surface data between two rows.
|
|
* Negative if the framebuffer is stored in the opposite order (e.g.
|
|
* bottom-to-top) compared to the framebuffer.
|
|
* @dest_col_pitch: Number of bytes in the surface data between two pixels.
|
|
* Negative if the framebuffer is stored in the opposite order (e.g.
|
|
* right-to-left) compared to the framebuffer.
|
|
* @invalidate: True if the function should redraw the whole screen
|
|
* without checking the DIRTY_MEMORY_VGA dirty bitmap.
|
|
* @fn: Drawing function to be called for each row that has to be drawn.
|
|
* @opaque: Opaque pointer passed to @fn.
|
|
* @first_row: Pointer to an integer, receives the number of the first row
|
|
* that was drawn (either the first dirty row, or 0 if @invalidate is true).
|
|
* @last_row: Pointer to an integer, receives the number of the last row that
|
|
* was drawn (either the last dirty row, or @rows-1 if @invalidate is true).
|
|
*/
|
|
void framebuffer_update_display(
|
|
DisplaySurface *ds,
|
|
MemoryRegionSection *mem_section,
|
|
int cols,
|
|
int rows,
|
|
int src_width,
|
|
int dest_row_pitch,
|
|
int dest_col_pitch,
|
|
int invalidate,
|
|
drawfn fn,
|
|
void *opaque,
|
|
int *first_row,
|
|
int *last_row);
|
|
|
|
#endif
|