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Add a shm buffer sharing mechanism

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This commit is contained in:
Kristian Høgsberg 2010-10-06 21:17:40 -04:00
parent 98ffc93b95
commit 3d5bae0700
8 changed files with 286 additions and 46 deletions
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74
compositor/drm.c
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@ -41,9 +41,10 @@ drm_authenticate(struct wl_client *client,
static void
destroy_buffer(struct wl_resource *resource, struct wl_client *client)
{
struct wlsc_buffer *buffer =
container_of(resource, struct wlsc_buffer, base.base);
struct wlsc_compositor *compositor = buffer->compositor;
struct wlsc_drm_buffer *buffer =
container_of(resource, struct wlsc_drm_buffer, base.base);
struct wlsc_compositor *compositor =
(struct wlsc_compositor *) buffer->base.compositor;
eglDestroyImageKHR(compositor->display, buffer->image);
free(buffer);
@ -59,6 +60,25 @@ const static struct wl_buffer_interface buffer_interface = {
buffer_destroy
};
static void
drm_buffer_attach(struct wl_buffer *buffer_base, struct wl_surface *surface)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_drm_buffer *buffer =
(struct wlsc_drm_buffer *) buffer_base;
glBindTexture(GL_TEXTURE_2D, es->texture);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, buffer->image);
es->visual = buffer->base.visual;
}
static void
drm_buffer_damage(struct wl_buffer *buffer,
struct wl_surface *surface,
int32_t x, int32_t y, int32_t width, int32_t height)
{
}
static void
drm_create_buffer(struct wl_client *client, struct wl_drm *drm_base,
uint32_t id, uint32_t name, int32_t width, int32_t height,
@ -67,7 +87,7 @@ drm_create_buffer(struct wl_client *client, struct wl_drm *drm_base,
struct wlsc_drm *drm = (struct wlsc_drm *) drm_base;
struct wlsc_compositor *compositor =
container_of(drm, struct wlsc_compositor, drm);
struct wlsc_buffer *buffer;
struct wlsc_drm_buffer *buffer;
EGLint attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
@ -98,10 +118,11 @@ drm_create_buffer(struct wl_client *client, struct wl_drm *drm_base,
attribs[3] = height;
attribs[5] = stride / 4;
buffer->compositor = compositor;
buffer->width = width;
buffer->height = height;
buffer->visual = visual;
buffer->base.compositor = &compositor->base;
buffer->base.width = width;
buffer->base.height = height;
buffer->base.visual = visual;
buffer->base.attach = drm_buffer_attach;
buffer->image = eglCreateImageKHR(compositor->display,
compositor->context,
EGL_DRM_BUFFER_MESA,
@ -157,3 +178,40 @@ wlsc_drm_init(struct wlsc_compositor *ec, int fd, const char *filename)
return 0;
}
struct wlsc_drm_buffer *
wlsc_drm_buffer_create(struct wlsc_compositor *ec,
int width, int height, struct wl_visual *visual)
{
struct wlsc_drm_buffer *buffer;
EGLint image_attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SCANOUT_MESA,
EGL_NONE
};
image_attribs[1] = width;
image_attribs[3] = height;
buffer = malloc(sizeof *buffer);
if (buffer == NULL)
return NULL;
buffer->image =
eglCreateDRMImageMESA(ec->display, image_attribs);
if (buffer->image == NULL) {
free(buffer);
return NULL;
}
buffer->base.visual = visual;
buffer->base.width = width;
buffer->base.height = height;
buffer->base.attach = drm_buffer_attach;
buffer->base.damage = drm_buffer_damage;
return buffer;
}