diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 26 |
1 files changed, 25 insertions, 1 deletions
@@ -78,6 +78,7 @@ struct swaybg_output { uint32_t configure_serial; bool dirty, needs_ack; + int32_t committed_width, committed_height, committed_scale; struct wl_list link; }; @@ -103,6 +104,19 @@ bool is_valid_color(const char *color) { static void render_frame(struct swaybg_output *output, cairo_surface_t *surface) { int buffer_width = output->width * output->scale, buffer_height = output->height * output->scale; + + // If the last committed buffer has the same size as this one would, do + // not render a new buffer, because it will be identical to the old one + if (output->committed_width == buffer_width && + output->committed_height == buffer_height) { + if (output->committed_scale != output->scale) { + wl_surface_set_buffer_scale(output->surface, output->scale); + wl_surface_commit(output->surface); + + output->committed_scale = output->scale; + } + return; + } struct pool_buffer buffer; if (!create_buffer(&buffer, output->state->shm, buffer_width, buffer_height, WL_SHM_FORMAT_ARGB8888)) { @@ -133,6 +147,11 @@ static void render_frame(struct swaybg_output *output, cairo_surface_t *surface) wl_surface_attach(output->surface, buffer.buffer, 0, 0); wl_surface_damage_buffer(output->surface, 0, 0, INT32_MAX, INT32_MAX); wl_surface_commit(output->surface); + + output->committed_width = buffer_width; + output->committed_height = buffer_height; + output->committed_scale = output->scale; + // we will not reuse the buffer, so destroy it immediately destroy_buffer(&buffer); } @@ -580,7 +599,12 @@ int main(int argc, char **argv) { output->configure_serial); } - if (output->dirty && output->config->image) { + int buffer_width = output->width * output->scale, + buffer_height = output->height * output->scale; + bool buffer_change = + output->committed_height != buffer_height || + output->committed_width != buffer_width; + if (output->dirty && output->config->image && buffer_change) { output->config->image->load_required = true; } } |