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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <stdlib.h>
#include "compositor.h"
static int
noop_renderer_read_pixels(struct weston_output *output,
pixman_format_code_t format, void *pixels,
uint32_t x, uint32_t y,
uint32_t width, uint32_t height)
{
return 0;
}
static void
noop_renderer_repaint_output(struct weston_output *output,
pixman_region32_t *output_damage)
{
}
static void
noop_renderer_flush_damage(struct weston_surface *surface)
{
}
static void
noop_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
{
struct wl_shm_buffer *shm_buffer;
uint8_t *data;
uint32_t size, i, width, height, stride;
volatile unsigned char unused = 0; /* volatile so it's not optimized out */
if (!buffer)
return;
shm_buffer = wl_shm_buffer_get(buffer->resource);
if (!shm_buffer) {
weston_log("No-op renderer supports only SHM buffers\n");
return;
}
data = wl_shm_buffer_get_data(shm_buffer);
stride = wl_shm_buffer_get_stride(shm_buffer);
width = wl_shm_buffer_get_width(shm_buffer);
height = wl_shm_buffer_get_height(shm_buffer);
size = stride * height;
/* Access the buffer data to make sure the buffer's client gets killed
* if the buffer size is invalid. This makes the bad_buffer test pass.
* This can be removed if we start reading the buffer contents
* somewhere else, e.g. in repaint_output(). */
wl_shm_buffer_begin_access(shm_buffer);
for (i = 0; i < size; i++)
unused ^= data[i];
wl_shm_buffer_end_access(shm_buffer);
buffer->shm_buffer = shm_buffer;
buffer->width = width;
buffer->height = height;
}
static void
noop_renderer_surface_set_color(struct weston_surface *surface,
float red, float green, float blue, float alpha)
{
}
static void
noop_renderer_destroy(struct weston_compositor *ec)
{
free(ec->renderer);
ec->renderer = NULL;
}
WL_EXPORT int
noop_renderer_init(struct weston_compositor *ec)
{
struct weston_renderer *renderer;
renderer = malloc(sizeof *renderer);
if (renderer == NULL)
return -1;
renderer->read_pixels = noop_renderer_read_pixels;
renderer->repaint_output = noop_renderer_repaint_output;
renderer->flush_damage = noop_renderer_flush_damage;
renderer->attach = noop_renderer_attach;
renderer->surface_set_color = noop_renderer_surface_set_color;
renderer->destroy = noop_renderer_destroy;
ec->renderer = renderer;
return 0;
}
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