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123 lines
3.5 KiB
123 lines
3.5 KiB
/*
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* Copyright © 2012 Intel Corporation
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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 <stdint.h>
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#include <stdlib.h>
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#include <libweston/libweston.h>
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#include "libweston-internal.h"
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static int
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noop_renderer_read_pixels(struct weston_output *output,
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pixman_format_code_t format, void *pixels,
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uint32_t x, uint32_t y,
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uint32_t width, uint32_t height)
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{
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return 0;
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}
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static void
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noop_renderer_repaint_output(struct weston_output *output,
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pixman_region32_t *output_damage)
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{
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}
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static void
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noop_renderer_flush_damage(struct weston_surface *surface,
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struct weston_buffer *buffer)
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{
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}
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static void
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noop_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
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{
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struct wl_shm_buffer *shm_buffer;
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uint8_t *data;
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uint32_t size, i, width, height, stride;
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volatile unsigned char unused = 0; /* volatile so it's not optimized out */
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if (!buffer)
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return;
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switch (buffer->type) {
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case WESTON_BUFFER_SOLID:
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/* no-op, early exit */
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return;
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case WESTON_BUFFER_SHM:
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/* fine */
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break;
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default:
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weston_log("No-op renderer supports only SHM buffers\n");
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return;
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}
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shm_buffer = buffer->shm_buffer;
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data = wl_shm_buffer_get_data(shm_buffer);
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stride = wl_shm_buffer_get_stride(shm_buffer);
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width = wl_shm_buffer_get_width(shm_buffer);
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height = wl_shm_buffer_get_height(shm_buffer);
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size = stride * height;
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/* Access the buffer data to make sure the buffer's client gets killed
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* if the buffer size is invalid. This makes the bad_buffer test pass.
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* This can be removed if we start reading the buffer contents
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* somewhere else, e.g. in repaint_output(). */
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wl_shm_buffer_begin_access(shm_buffer);
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for (i = 0; i < size; i++)
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unused ^= data[i];
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wl_shm_buffer_end_access(shm_buffer);
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buffer->shm_buffer = shm_buffer;
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buffer->width = width;
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buffer->height = height;
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}
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static void
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noop_renderer_destroy(struct weston_compositor *ec)
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{
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free(ec->renderer);
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ec->renderer = NULL;
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}
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WL_EXPORT int
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noop_renderer_init(struct weston_compositor *ec)
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{
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struct weston_renderer *renderer;
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renderer = zalloc(sizeof *renderer);
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if (renderer == NULL)
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return -1;
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renderer->read_pixels = noop_renderer_read_pixels;
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renderer->repaint_output = noop_renderer_repaint_output;
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renderer->flush_damage = noop_renderer_flush_damage;
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renderer->attach = noop_renderer_attach;
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renderer->destroy = noop_renderer_destroy;
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ec->renderer = renderer;
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return 0;
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}
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