compositor-drm: Add sprite support
Add support for assigning surfaces to overlay sprites using the new assign_planes hook.
This commit is contained in:
Jesse Barnes
Kristian Høgsberg
parent
5308a5e09b
commit
58ef379be6
@ -73,7 +73,7 @@ AC_ARG_ENABLE(drm-compositor, [ --enable-drm-compositor],,
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AM_CONDITIONAL(ENABLE_DRM_COMPOSITOR, test x$enable_drm_compositor = xyes)
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if test x$enable_drm_compositor = xyes; then
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AC_DEFINE([BUILD_DRM_COMPOSITOR], [1], [Build the DRM compositor])
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PKG_CHECK_MODULES(DRM_COMPOSITOR, [libudev >= 136 libdrm >= 2.4.23 gbm])
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PKG_CHECK_MODULES(DRM_COMPOSITOR, [libudev >= 136 libdrm >= 2.4.30 gbm])
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fi
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@ -23,6 +23,7 @@
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#define _GNU_SOURCE
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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@ -31,6 +32,7 @@
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include <drm_fourcc.h>
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#include <gbm.h>
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@ -50,10 +52,14 @@ struct drm_compositor {
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int fd;
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} drm;
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struct gbm_device *gbm;
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uint32_t *crtcs;
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int num_crtcs;
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uint32_t crtc_allocator;
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uint32_t connector_allocator;
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struct tty *tty;
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struct wl_list sprite_list;
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uint32_t prev_state;
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};
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@ -82,6 +88,66 @@ struct drm_output {
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struct wl_listener pending_scanout_buffer_destroy_listener;
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};
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/*
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* An output has a primary display plane plus zero or more sprites for
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* blending display contents.
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*/
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struct drm_sprite {
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struct wl_list link;
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uint32_t fb_id;
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uint32_t pending_fb_id;
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struct weston_surface *surface;
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struct weston_surface *pending_surface;
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struct drm_compositor *compositor;
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struct wl_listener destroy_listener;
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struct wl_listener pending_destroy_listener;
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uint32_t possible_crtcs;
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uint32_t plane_id;
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uint32_t count_formats;
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int32_t src_x, src_y;
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uint32_t src_w, src_h;
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uint32_t dest_x, dest_y;
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uint32_t dest_w, dest_h;
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uint32_t formats[];
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};
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static int
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surface_is_primary(struct weston_compositor *ec, struct weston_surface *es)
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{
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struct weston_surface *primary;
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primary = container_of(ec->surface_list.next, struct weston_surface,
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link);
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if (es == primary)
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return -1;
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return 0;
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}
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static int
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drm_sprite_crtc_supported(struct weston_output *output_base, uint32_t supported)
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{
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struct weston_compositor *ec = output_base->compositor;
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struct drm_compositor *c =(struct drm_compositor *) ec;
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struct drm_output *output = (struct drm_output *) output_base;
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int crtc;
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for (crtc = 0; crtc < c->num_crtcs; crtc++) {
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if (c->crtcs[crtc] != output->crtc_id)
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continue;
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if (supported & (1 << crtc))
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return -1;
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}
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return 0;
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}
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static int
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drm_output_prepare_scanout_surface(struct drm_output *output)
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{
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@ -152,7 +218,9 @@ drm_output_repaint(struct weston_output *output_base)
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struct drm_compositor *compositor =
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(struct drm_compositor *) output->base.compositor;
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struct weston_surface *surface;
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struct drm_sprite *s;
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uint32_t fb_id = 0;
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int ret = 0;
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glFramebufferRenderbuffer(GL_FRAMEBUFFER,
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GL_COLOR_ATTACHMENT0,
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@ -184,9 +252,70 @@ drm_output_repaint(struct weston_output *output_base)
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return;
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}
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/*
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* Now, update all the sprite surfaces
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*/
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wl_list_for_each(s, &compositor->sprite_list, link) {
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uint32_t flags = 0;
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drmVBlank vbl = {
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.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT,
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.request.sequence = 1,
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};
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if (!drm_sprite_crtc_supported(output_base, s->possible_crtcs))
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continue;
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ret = drmModeSetPlane(compositor->drm.fd, s->plane_id,
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output->crtc_id, s->pending_fb_id, flags,
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s->dest_x, s->dest_y,
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s->dest_w, s->dest_h,
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s->src_x, s->src_y,
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s->src_w, s->src_h);
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if (ret)
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fprintf(stderr, "setplane failed: %d: %s\n",
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ret, strerror(errno));
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/*
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* Queue a vblank signal so we know when the surface
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* becomes active on the display or has been replaced.
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*/
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vbl.request.signal = (unsigned long)s;
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ret = drmWaitVBlank(compositor->drm.fd, &vbl);
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if (ret) {
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fprintf(stderr, "vblank event request failed: %d: %s\n",
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ret, strerror(errno));
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}
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}
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return;
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}
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static void
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vblank_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec,
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void *data)
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{
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struct drm_sprite *s = (struct drm_sprite *)data;
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struct drm_compositor *c = s->compositor;
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if (s->surface) {
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weston_buffer_post_release(s->surface->buffer);
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wl_list_remove(&s->destroy_listener.link);
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s->surface = NULL;
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drmModeRmFB(c->drm.fd, s->fb_id);
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s->fb_id = 0;
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}
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if (s->pending_surface) {
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wl_list_remove(&s->pending_destroy_listener.link);
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wl_list_insert(s->pending_surface->buffer->resource.destroy_listener_list.prev,
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&s->destroy_listener.link);
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s->surface = s->pending_surface;
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s->pending_surface = NULL;
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s->fb_id = s->pending_fb_id;
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s->pending_fb_id = 0;
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}
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}
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static void
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page_flip_handler(int fd, unsigned int frame,
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unsigned int sec, unsigned int usec, void *data)
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@ -218,6 +347,235 @@ page_flip_handler(int fd, unsigned int frame,
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weston_output_finish_frame(&output->base, msecs);
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}
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static int
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drm_surface_format_supported(struct drm_sprite *s, uint32_t format)
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{
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int i;
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for (i = 0; i < s->count_formats; i++)
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if (s->formats[i] == format)
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return 1;
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return 0;
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}
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static int
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drm_surface_transform_supported(struct weston_surface *es)
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{
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if (es->transform.enabled)
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return 0;
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return 1;
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}
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static int
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drm_surface_overlap_supported(struct weston_output *output_base,
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pixman_region32_t *overlap)
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{
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/* We could potentially use a color key here if the surface left
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* to display has rectangular regions
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*/
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if (pixman_region32_not_empty(overlap))
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return 0;
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return 1;
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}
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static void
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drm_disable_unused_sprites(struct weston_output *output_base)
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{
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struct weston_compositor *ec = output_base->compositor;
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struct drm_compositor *c =(struct drm_compositor *) ec;
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struct drm_output *output = (struct drm_output *) output_base;
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struct drm_sprite *s;
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int ret;
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wl_list_for_each(s, &c->sprite_list, link) {
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if (s->pending_fb_id)
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continue;
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ret = drmModeSetPlane(c->drm.fd, s->plane_id,
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output->crtc_id, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0);
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if (ret)
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fprintf(stderr,
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"failed to disable plane: %d: %s\n",
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ret, strerror(errno));
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drmModeRmFB(c->drm.fd, s->fb_id);
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s->surface = NULL;
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s->pending_surface = NULL;
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s->fb_id = 0;
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s->pending_fb_id = 0;
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}
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}
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/*
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* This function must take care to damage any previously assigned surface
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* if the sprite ends up binding to a different surface than in the
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* previous frame.
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*/
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static int
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drm_output_prepare_overlay_surface(struct weston_output *output_base,
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struct weston_surface *es,
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pixman_region32_t *overlap)
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{
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struct weston_compositor *ec = output_base->compositor;
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struct drm_compositor *c =(struct drm_compositor *) ec;
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struct drm_sprite *s;
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int found = 0;
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EGLint handle, stride;
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struct gbm_bo *bo;
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uint32_t fb_id = 0;
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uint32_t handles[4], pitches[4], offsets[4];
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int ret = 0;
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pixman_region32_t dest_rect, src_rect;
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pixman_box32_t *box;
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uint32_t format;
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if (surface_is_primary(ec, es))
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return -1;
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if (!es->buffer)
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return -1;
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if (!drm_surface_transform_supported(es))
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return -1;
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if (!drm_surface_overlap_supported(output_base, overlap))
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return -1;
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wl_list_for_each(s, &c->sprite_list, link) {
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if (!drm_sprite_crtc_supported(output_base, s->possible_crtcs))
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continue;
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if (!s->pending_fb_id) {
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found = 1;
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break;
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}
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}
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/* No sprites available */
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if (!found)
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return -1;
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bo = gbm_bo_create_from_egl_image(c->gbm, c->base.display, es->image,
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es->geometry.width, es->geometry.height,
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GBM_BO_USE_SCANOUT);
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format = gbm_bo_get_format(bo);
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handle = gbm_bo_get_handle(bo).s32;
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stride = gbm_bo_get_pitch(bo);
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gbm_bo_destroy(bo);
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if (!drm_surface_format_supported(s, format))
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return -1;
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if (!handle)
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return -1;
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handles[0] = handle;
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pitches[0] = stride;
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offsets[0] = 0;
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ret = drmModeAddFB2(c->drm.fd, es->geometry.width, es->geometry.height,
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format, handles, pitches, offsets,
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&fb_id, 0);
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if (ret) {
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fprintf(stderr, "addfb2 failed: %d\n", ret);
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return -1;
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}
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if (s->surface && s->surface != es) {
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struct weston_surface *old_surf = s->surface;
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pixman_region32_fini(&old_surf->damage);
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pixman_region32_init_rect(&old_surf->damage,
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old_surf->geometry.x, old_surf->geometry.y,
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old_surf->geometry.width, old_surf->geometry.height);
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}
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s->pending_fb_id = fb_id;
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s->pending_surface = es;
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es->buffer->busy_count++;
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/*
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* Calculate the source & dest rects properly based on actual
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* postion (note the caller has called weston_surface_update_transform()
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* for us already).
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*/
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pixman_region32_init(&dest_rect);
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pixman_region32_intersect(&dest_rect, &es->transform.boundingbox,
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&output_base->region);
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pixman_region32_translate(&dest_rect, -output_base->x, -output_base->y);
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box = pixman_region32_extents(&dest_rect);
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s->dest_x = box->x1;
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s->dest_y = box->y1;
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s->dest_w = box->x2 - box->x1;
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s->dest_h = box->y2 - box->y1;
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pixman_region32_fini(&dest_rect);
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pixman_region32_init(&src_rect);
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pixman_region32_intersect(&src_rect, &es->transform.boundingbox,
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&output_base->region);
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pixman_region32_translate(&src_rect, -es->geometry.x, -es->geometry.y);
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box = pixman_region32_extents(&src_rect);
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s->src_x = box->x1;
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s->src_y = box->y1;
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s->src_w = box->x2 - box->x1;
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s->src_h = box->y2 - box->y1;
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pixman_region32_fini(&src_rect);
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wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
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&s->pending_destroy_listener.link);
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return 0;
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}
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static void
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drm_assign_planes(struct weston_output *output)
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{
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struct weston_compositor *ec = output->compositor;
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struct weston_surface *es;
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pixman_region32_t overlap, surface_overlap;
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/*
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* Find a surface for each sprite in the output using some heuristics:
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* 1) size
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* 2) frequency of update
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* 3) opacity (though some hw might support alpha blending)
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* 4) clipping (this can be fixed with color keys)
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*
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* The idea is to save on blitting since this should save power.
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* If we can get a large video surface on the sprite for example,
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* the main display surface may not need to update at all, and
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* the client buffer can be used directly for the sprite surface
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* as we do for flipping full screen surfaces.
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*/
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pixman_region32_init(&overlap);
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wl_list_for_each(es, &ec->surface_list, link) {
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weston_surface_update_transform(es);
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/*
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* FIXME: try to assign hw cursors here too, they're just
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* special overlays
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*/
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pixman_region32_init(&surface_overlap);
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pixman_region32_intersect(&surface_overlap, &overlap,
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&es->transform.boundingbox);
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if (!drm_output_prepare_overlay_surface(output, es,
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&surface_overlap)) {
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pixman_region32_fini(&es->damage);
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pixman_region32_init(&es->damage);
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} else {
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pixman_region32_union(&overlap, &overlap,
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&es->transform.boundingbox);
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}
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pixman_region32_fini(&surface_overlap);
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}
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pixman_region32_fini(&overlap);
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drm_disable_unused_sprites(output);
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}
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static int
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drm_output_set_cursor(struct weston_output *output_base,
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struct weston_input_device *eid)
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@ -344,6 +702,7 @@ on_drm_input(int fd, uint32_t mask, void *data)
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memset(&evctx, 0, sizeof evctx);
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evctx.version = DRM_EVENT_CONTEXT_VERSION;
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evctx.page_flip_handler = page_flip_handler;
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evctx.vblank_handler = vblank_handler;
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drmHandleEvent(fd, &evctx);
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return 1;
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@ -488,6 +847,30 @@ output_handle_pending_scanout_buffer_destroy(struct wl_listener *listener,
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weston_compositor_schedule_repaint(output->base.compositor);
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}
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static void
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sprite_handle_buffer_destroy(struct wl_listener *listener,
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struct wl_resource *resource,
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uint32_t time)
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{
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struct drm_sprite *sprite =
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container_of(listener, struct drm_sprite,
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destroy_listener);
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sprite->surface = NULL;
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}
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static void
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sprite_handle_pending_buffer_destroy(struct wl_listener *listener,
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struct wl_resource *resource,
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uint32_t time)
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{
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struct drm_sprite *sprite =
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container_of(listener, struct drm_sprite,
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pending_destroy_listener);
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sprite->pending_surface = NULL;
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}
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static int
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create_output_for_connector(struct drm_compositor *ec,
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drmModeRes *resources,
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@ -621,7 +1004,7 @@ create_output_for_connector(struct drm_compositor *ec,
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output->base.repaint = drm_output_repaint;
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output->base.set_hardware_cursor = drm_output_set_cursor;
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output->base.destroy = drm_output_destroy;
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output->base.assign_planes = NULL;
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output->base.assign_planes = drm_assign_planes;
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return 0;
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@ -657,6 +1040,60 @@ err_free:
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return -1;
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}
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static void
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create_sprites(struct drm_compositor *ec)
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{
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struct drm_sprite *sprite;
|
||||
drmModePlaneRes *plane_res;
|
||||
drmModePlane *plane;
|
||||
int i;
|
||||
|
||||
plane_res = drmModeGetPlaneResources(ec->drm.fd);
|
||||
if (!plane_res) {
|
||||
fprintf(stderr, "failed to get plane resources: %s\n",
|
||||
strerror(errno));
|
||||
return;
|
||||
}
|
||||
|
||||
for (i = 0; i < plane_res->count_planes; i++) {
|
||||
plane = drmModeGetPlane(ec->drm.fd, plane_res->planes[i]);
|
||||
if (!plane)
|
||||
continue;
|
||||
|
||||
sprite = malloc(sizeof(*sprite) + ((sizeof(uint32_t)) *
|
||||
plane->count_formats));
|
||||
if (!sprite) {
|
||||
fprintf(stderr, "%s: out of memory\n",
|
||||
__func__);
|
||||
free(plane);
|
||||
continue;
|
||||
}
|
||||
|
||||
memset(sprite, 0, sizeof *sprite);
|
||||
|
||||
sprite->possible_crtcs = plane->possible_crtcs;
|
||||
sprite->plane_id = plane->plane_id;
|
||||
sprite->surface = NULL;
|
||||
sprite->pending_surface = NULL;
|
||||
sprite->fb_id = 0;
|
||||
sprite->pending_fb_id = 0;
|
||||
sprite->destroy_listener.func = sprite_handle_buffer_destroy;
|
||||
sprite->pending_destroy_listener.func =
|
||||
sprite_handle_pending_buffer_destroy;
|
||||
sprite->compositor = ec;
|
||||
sprite->count_formats = plane->count_formats;
|
||||
memcpy(sprite->formats, plane->formats,
|
||||
plane->count_formats);
|
||||
drmModeFreePlane(plane);
|
||||
|
||||
wl_list_insert(&ec->sprite_list, &sprite->link);
|
||||
}
|
||||
|
||||
free(plane_res->planes);
|
||||
free(plane_res);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
create_outputs(struct drm_compositor *ec, int option_connector)
|
||||
{
|
||||
@ -671,6 +1108,13 @@ create_outputs(struct drm_compositor *ec, int option_connector)
|
||||
return -1;
|
||||
}
|
||||
|
||||
ec->crtcs = calloc(resources->count_crtcs, sizeof(uint32_t));
|
||||
if (!ec->crtcs)
|
||||
return -1;
|
||||
|
||||
ec->num_crtcs = resources->count_crtcs;
|
||||
memcpy(ec->crtcs, resources->crtcs, sizeof(uint32_t) * ec->num_crtcs);
|
||||
|
||||
for (i = 0; i < resources->count_connectors; i++) {
|
||||
connector = drmModeGetConnector(ec->drm.fd,
|
||||
resources->connectors[i]);
|
||||
@ -1002,6 +1446,9 @@ drm_compositor_create(struct wl_display *display,
|
||||
if (weston_compositor_init(&ec->base, display) < 0)
|
||||
return NULL;
|
||||
|
||||
wl_list_init(&ec->sprite_list);
|
||||
create_sprites(ec);
|
||||
|
||||
if (create_outputs(ec, connector) < 0) {
|
||||
fprintf(stderr, "failed to create output for %s\n", path);
|
||||
return NULL;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user