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Make sure damage buffer is properly aligned

shader-damage-experiments
Andri Yngvason 2020-03-29 13:09:28 +00:00
parent b14a0b854b
commit e85f219aff
1 changed files with 8 additions and 1 deletions
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9
src/main.c
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@ -33,6 +33,7 @@
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <pixman.h>
#include <sys/param.h>
#include "wlr-export-dmabuf-unstable-v1.h"
#include "wlr-screencopy-unstable-v1.h"
@ -54,6 +55,9 @@
#define DEFAULT_ADDRESS "127.0.0.1"
#define DEFAULT_PORT 5900
#define UDIV_UP(a, b) (((a) + (b) - 1) / (b))
#define ALIGN_UP(n, a) (UDIV_UP(n, a) * a)
enum frame_capture_backend_type {
FRAME_CAPTURE_BACKEND_NONE = 0,
FRAME_CAPTURE_BACKEND_SCREENCOPY,
@ -540,7 +544,10 @@ void wayvnc_process_frame(struct wayvnc* self)
.x2 = tfx1, .y2 = tfy1,
};
uint8_t* damage_buffer = malloc(width * height);
size_t alignment = MAX(4, sizeof(void*));
size_t damage_buffer_size = ALIGN_UP(width * height, alignment);
uint8_t* damage_buffer =
aligned_alloc(alignment, damage_buffer_size);
render_damage(&self->renderer);
renderer_read_damage(&self->renderer, damage_buffer, 0, height);