From: Alex Wu <[email protected]>
Implement switch_mode hook for drm back end.
---
src/compositor-drm.c | 143 +++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 142 insertions(+), 1 deletions(-)
diff --git a/src/compositor-drm.c b/src/compositor-drm.c
index 1b0a9b9..e9583fe 100644
--- a/src/compositor-drm.c
+++ b/src/compositor-drm.c
@@ -120,6 +120,23 @@ struct drm_sprite {
uint32_t formats[];
};
+static struct drm_mode *
+choose_mode (struct drm_output *output, int32_t width, int32_t height,
uint32_t refresh)
+{
+ struct drm_mode *tmp_mode = NULL, *mode, *next;
+
+ wl_list_for_each_safe(mode, next, &output->base.mode_list,base.link) {
+ if (mode->mode_info.hdisplay == width &&
mode->mode_info.vdisplay == height) {
+ if (mode->mode_info.vrefresh == refresh)
+ return mode;
+ else if (!tmp_mode)
+ tmp_mode = mode;
+ }
+ }
+
+ return tmp_mode;
+}
+
static int
surface_is_primary(struct weston_compositor *ec, struct weston_surface *es)
{
@@ -742,6 +759,130 @@ drm_output_destroy(struct weston_output *output_base)
}
static int
+drm_output_switch_mode (struct weston_output *output_base, int32_t width,
int32_t height, uint32_t refresh)
+{
+ struct drm_output *output;
+ struct drm_mode *drm_mode;
+ struct weston_mode *old_mode;
+ int i, ret;
+ unsigned handle, stride;
+ struct drm_compositor *ec;
+
+ if (output_base == NULL) {
+ fprintf(stderr, "output is NULL.\n");
+ return -1;
+ }
+
+ ec = (struct drm_compositor *)output_base->compositor;
+ output = (struct drm_output *)output_base;
+ old_mode = output->base.current;
+ drm_mode = choose_mode (output, width, height, refresh);
+
+ if (!drm_mode) {
+ printf("%s, invalid resolution:%dx%d\n", __func__, width,
height);
+ return -1;
+ }
+
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0,
+ GL_RENDERBUFFER, 0);
+
+ /* Destroy output buffers */
+ for (i = 0; i < 2; i++) {
+ drmModeRmFB(ec->drm.fd, output->fb_id[i]);
+ ec->base.destroy_image(ec->base.display, output->image[i]);
+ gbm_bo_destroy(output->bo[i]);
+ }
+
+ glBindRenderbuffer(GL_RENDERBUFFER, 0);
+ glDeleteRenderbuffers(2, output->rbo);
+ weston_output_destroy(&output->base);
+
+ output->base.current = &drm_mode->base;
+ drm_mode->base.flags =
+ WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
+
+ /* create new output buffers */
+ glGenRenderbuffers(2, output->rbo);
+ for (i = 0; i < 2; i++) {
+ glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
+
+ output->bo[i] =
+ gbm_bo_create(ec->gbm,
+ output->base.current->width,
+ output->base.current->height,
+ GBM_BO_FORMAT_XRGB8888,
+ GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
+
+ if (!output->bo[i])
+ goto err_bufs;
+
+ output->image[i] = ec->base.create_image(ec->base.display,
+ NULL,
+ EGL_NATIVE_PIXMAP_KHR,
+ output->bo[i], NULL);
+ if (!output->image[i])
+ goto err_bufs;
+
+ ec->base.image_target_renderbuffer_storage(GL_RENDERBUFFER,
+ output->image[i]);
+ stride = gbm_bo_get_pitch(output->bo[i]);
+ handle = gbm_bo_get_handle(output->bo[i]).u32;
+
+ ret = drmModeAddFB(ec->drm.fd,
+ output->base.current->width,
+ output->base.current->height,
+ 24, 32, stride, handle, &output->fb_id[i]);
+
+ if (ret) {
+ fprintf(stderr, "failed to add fb %d: %m\n", i);
+ goto err_bufs;
+ }
+ }
+
+ output->current = 0;
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0,
+ GL_RENDERBUFFER,
+ output->rbo[output->current]);
+
+ ret = drmModeSetCrtc(ec->drm.fd,
+ output->crtc_id,
+ output->fb_id[output->current ^ 1], 0, 0,
+ &output->connector_id, 1, &drm_mode->mode_info);
+
+ if (ret) {
+ fprintf(stderr, "failed to set mode\n");
+ goto err_fb;
+ }
+
+ output->base.dirty = 1;
+ weston_output_move(&output->base, output->base.x, output->base.y);
+
+ return 0;
+
+err_fb:
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0,
+ GL_RENDERBUFFER, 0);
+err_bufs:
+ for (i = 0; i < 2; i++) {
+ if (output->fb_id[i] != -1)
+ drmModeRmFB(ec->drm.fd, output->fb_id[i]);
+ if (output->image[i])
+ ec->base.destroy_image(ec->base.display,
+ output->image[i]);
+ if (output->bo[i])
+ gbm_bo_destroy(output->bo[i]);
+ }
+ glBindRenderbuffer(GL_RENDERBUFFER, 0);
+ glDeleteRenderbuffers(2, output->rbo);
+
+ output->base.current = old_mode;
+ return -1;
+}
+
+static int
on_drm_input(int fd, uint32_t mask, void *data)
{
drmEventContext evctx;
@@ -1140,7 +1281,7 @@ create_output_for_connector(struct drm_compositor *ec,
output->base.destroy = drm_output_destroy;
output->base.assign_planes = drm_assign_planes;
output->base.set_dpms = drm_set_dpms;
- output->base.switch_mode = NULL;
+ output->base.switch_mode = drm_output_switch_mode;
return 0;
--
1.7.5.4
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