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b9e199b47d
Renderbuffers currently have a libweston-internal base data structure with a ref-counting system to handle their lifetime. The problem is that renderers keep a ref to all renderbuffers in a list per output (to deal with damages) and that it prevents backends from releasing renderbuffer resources when not needed anymore. Renderbuffers are then only released (last ref removed) when the output is destroyed or resized. dma-buf renderbuffers even expose a dedicated function remove_renderbuffer_dmabuf() to explictly request the release of their resources. This commit proposes to get rid of the ref-counting system by exposing a single entry point to explicitly destroy all types of renderbuffers from the renderer. Instead of removing a renderbuffer from its output list and dropping its ref when the output is resized, this commit also introduces the concept of stale renderbuffers which consists in releasing the resources of a renderbuffer when it's discarded by the renderer while keeping it in the output list, with a stale state, until it's explicitly destroyed. Signed-off-by: Loïc Molinari <loic.molinari@collabora.com>
60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
/*
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* Copyright © 2013 Vasily Khoruzhick <anarsoul@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <libweston/libweston.h>
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#include "backend.h"
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#include "libweston-internal.h"
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#include "pixman.h"
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int
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pixman_renderer_init(struct weston_compositor *ec);
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struct pixman_renderer_output_options {
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/** Composite into a shadow buffer, copying to the hardware buffer */
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bool use_shadow;
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/** Initial framebuffer size */
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struct weston_size fb_size;
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/** Initial pixel format */
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const struct pixel_format_info *format;
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};
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struct pixman_renderer_interface {
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int (*output_create)(struct weston_output *output,
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const struct pixman_renderer_output_options *options);
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void (*output_destroy)(struct weston_output *output);
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weston_renderbuffer_t (*create_image_from_ptr)(struct weston_output *output,
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const struct pixel_format_info *format,
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int width,
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int height,
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uint32_t *ptr,
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int stride);
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weston_renderbuffer_t (*create_image)(struct weston_output *output,
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const struct pixel_format_info *format,
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int width, int height);
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pixman_image_t *(*renderbuffer_get_image)(weston_renderbuffer_t renderbuffer);
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};
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