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ecore_drm2: Try to mmap gbm buffers 

We're currently doing screenshots in E under wayland by copying data
out of the framebuffer, mmaping gbm buffers makes screenshots work
again when rendering with GL.
This commit is contained in:
Derek Foreman 2016-07-14 16:25:05 -05:00
parent f48f565306
commit f8e07c4d7c
1 changed files with 13 additions and 2 deletions
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15
src/lib/ecore_drm2/ecore_drm2_fb.c
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@ -108,7 +108,9 @@ err:
EAPI Ecore_Drm2_Fb * EAPI Ecore_Drm2_Fb *
ecore_drm2_fb_gbm_create(int fd, int width, int height, int depth, int bpp, unsigned int format, unsigned int handle, unsigned int stride) ecore_drm2_fb_gbm_create(int fd, int width, int height, int depth, int bpp, unsigned int format, unsigned int handle, unsigned int stride)
{ {
struct drm_mode_map_dumb marg;
Ecore_Drm2_Fb *fb; Ecore_Drm2_Fb *fb;
int ret;
EINA_SAFETY_ON_TRUE_RETURN_VAL((fd < 0), NULL); EINA_SAFETY_ON_TRUE_RETURN_VAL((fd < 0), NULL);
@ -141,6 +143,15 @@ ecore_drm2_fb_gbm_create(int fd, int width, int height, int depth, int bpp, unsi
} }
} }
/* mmap it if we can so screenshots are easy */
memset(&marg, 0, sizeof(struct drm_mode_map_dumb));
marg.handle = fb->hdl;
ret = drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &marg);
if (!ret)
{
fb->mmap = mmap(NULL, fb->size, PROT_WRITE, MAP_SHARED, fd, marg.offset);
if (fb->mmap == MAP_FAILED) fb->mmap = NULL;
}
return fb; return fb;
err: err:
@ -153,14 +164,14 @@ ecore_drm2_fb_destroy(Ecore_Drm2_Fb *fb)
{ {
EINA_SAFETY_ON_NULL_RETURN(fb); EINA_SAFETY_ON_NULL_RETURN(fb);
if (fb->mmap) munmap(fb->mmap, fb->size);
if (fb->id) drmModeRmFB(fb->fd, fb->id); if (fb->id) drmModeRmFB(fb->fd, fb->id);
if (!fb->gbm) if (!fb->gbm)
{ {
struct drm_mode_destroy_dumb darg; struct drm_mode_destroy_dumb darg;
if (fb->mmap) munmap(fb->mmap, fb->size);
memset(&darg, 0, sizeof(struct drm_mode_destroy_dumb)); memset(&darg, 0, sizeof(struct drm_mode_destroy_dumb));
darg.handle = fb->hdl; darg.handle = fb->hdl;
drmIoctl(fb->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &darg); drmIoctl(fb->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &darg);