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weston/libweston/pixman-renderer.c

932 lines
25 KiB

/*
* Copyright © 2012 Intel Corporation
* Copyright © 2013 Vasily Khoruzhick <anarsoul@gmail.com>
* Copyright © 2015 Collabora, Ltd.
*
* 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 <errno.h>
#include <stdlib.h>
#include <assert.h>
#include "pixman-renderer.h"
#include "shared/helpers.h"
#include <linux/input.h>
struct pixman_output_state {
void *shadow_buffer;
pixman_image_t *shadow_image;
pixman_image_t *hw_buffer;
};
struct pixman_surface_state {
struct weston_surface *surface;
pixman_image_t *image;
struct weston_buffer_reference buffer_ref;
pixman: Destroy pixman images when underlying buffer is destroyed While the pixman image might be attached, the underlying buffer might be already gone under certain circumstances. This is easily reproduced by attempting to resize gnome-terminal on a fbdev backend. $ WAYLAND_DEBUG=1 strace -emunmap weston --backend=fbdev-backend.so ... [1524826.942] wl_shm@7.create_pool(new id wl_shm_pool@23, fd 40, 1563540) [1524827.315] wl_shm_pool@23.create_buffer(new id wl_buffer@24, 0, 759, 515, 3036, 0) ... [1524829.488] wl_surface@14.attach(wl_buffer@24, 0, 0) [1524829.766] wl_surface@14.set_buffer_scale(1) [1524829.904] wl_surface@14.damage(0, 0, 759, 515) [1524830.248] wl_surface@14.frame(new id wl_callback@25) [1524830.450] wl_surface@14.commit() ... [1524846.706] wl_shm@7.create_pool(new id wl_shm_pool@26, fd 40, 1545000) [1524847.215] wl_shm_pool@26.create_buffer(new id wl_buffer@27, 0, 750, 515, 3000, 0) [1524847.735] wl_buffer@24.destroy() [1524847.953] -> wl_display@1.delete_id(24) [1524848.144] wl_shm_pool@23.destroy() munmap(0xb5b2e000, 1563540) = 0 [1524849.021] -> wl_display@1.delete_id(23) [1524849.425] wl_surface@14.attach(wl_buffer@27, 0, 0) [1524849.730] wl_surface@14.set_buffer_scale(1) [1524849.821] wl_surface@14.damage(0, 0, 750, 515) <No commit yet, so drawing is attempted from older buffer that used to be attached to the surface, which happens to come from a destroyed pool, resulting it an invalid read from address 0xb5b2e000> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
11 years ago
struct wl_listener buffer_destroy_listener;
struct wl_listener surface_destroy_listener;
struct wl_listener renderer_destroy_listener;
};
struct pixman_renderer {
struct weston_renderer base;
int repaint_debug;
pixman_image_t *debug_color;
struct weston_binding *debug_binding;
struct wl_signal destroy_signal;
};
static inline struct pixman_output_state *
get_output_state(struct weston_output *output)
{
return (struct pixman_output_state *)output->renderer_state;
}
static int
pixman_renderer_create_surface(struct weston_surface *surface);
static inline struct pixman_surface_state *
get_surface_state(struct weston_surface *surface)
{
if (!surface->renderer_state)
pixman_renderer_create_surface(surface);
return (struct pixman_surface_state *)surface->renderer_state;
}
static inline struct pixman_renderer *
get_renderer(struct weston_compositor *ec)
{
return (struct pixman_renderer *)ec->renderer;
}
static int
pixman_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)
{
struct pixman_output_state *po = get_output_state(output);
pixman_transform_t transform;
pixman_image_t *out_buf;
if (!po->hw_buffer) {
errno = ENODEV;
return -1;
}
out_buf = pixman_image_create_bits(format,
width,
height,
pixels,
(PIXMAN_FORMAT_BPP(format) / 8) * width);
/* Caller expects vflipped source image */
pixman_transform_init_translate(&transform,
pixman_int_to_fixed (x),
pixman_int_to_fixed (y - pixman_image_get_height (po->hw_buffer)));
pixman_transform_scale(&transform, NULL,
pixman_fixed_1,
pixman_fixed_minus_1);
pixman_image_set_transform(po->hw_buffer, &transform);
pixman_image_composite32(PIXMAN_OP_SRC,
po->hw_buffer, /* src */
NULL /* mask */,
out_buf, /* dest */
0, 0, /* src_x, src_y */
0, 0, /* mask_x, mask_y */
0, 0, /* dest_x, dest_y */
pixman_image_get_width (po->hw_buffer), /* width */
pixman_image_get_height (po->hw_buffer) /* height */);
pixman_image_set_transform(po->hw_buffer, NULL);
pixman_image_unref(out_buf);
return 0;
}
static void
region_global_to_output(struct weston_output *output, pixman_region32_t *region)
{
if (output->zoom.active) {
weston_matrix_transform_region(region, &output->matrix, region);
} else {
pixman_region32_translate(region, -output->x, -output->y);
weston_transformed_region(output->width, output->height,
output->transform,
output->current_scale,
region, region);
}
}
#define D2F(v) pixman_double_to_fixed((double)v)
static void
weston_matrix_to_pixman_transform(pixman_transform_t *pt,
const struct weston_matrix *wm)
{
/* Pixman supports only 2D transform matrix, but Weston uses 3D, *
* so we're omitting Z coordinate here. */
pt->matrix[0][0] = pixman_double_to_fixed(wm->d[0]);
pt->matrix[0][1] = pixman_double_to_fixed(wm->d[4]);
pt->matrix[0][2] = pixman_double_to_fixed(wm->d[12]);
pt->matrix[1][0] = pixman_double_to_fixed(wm->d[1]);
pt->matrix[1][1] = pixman_double_to_fixed(wm->d[5]);
pt->matrix[1][2] = pixman_double_to_fixed(wm->d[13]);
pt->matrix[2][0] = pixman_double_to_fixed(wm->d[3]);
pt->matrix[2][1] = pixman_double_to_fixed(wm->d[7]);
pt->matrix[2][2] = pixman_double_to_fixed(wm->d[15]);
}
static void
pixman_renderer_compute_transform(pixman_transform_t *transform_out,
struct weston_view *ev,
struct weston_output *output)
{
struct weston_matrix matrix;
/* Set up the source transformation based on the surface
position, the output position/transform/scale and the client
specified buffer transform/scale */
matrix = output->inverse_matrix;
if (ev->transform.enabled) {
weston_matrix_multiply(&matrix, &ev->transform.inverse);
} else {
weston_matrix_translate(&matrix,
-ev->geometry.x, -ev->geometry.y, 0);
}
weston_matrix_multiply(&matrix, &ev->surface->surface_to_buffer_matrix);
weston_matrix_to_pixman_transform(transform_out, &matrix);
}
static bool
view_transformation_is_translation(struct weston_view *view)
{
if (!view->transform.enabled)
return true;
if (view->transform.matrix.type <= WESTON_MATRIX_TRANSFORM_TRANSLATE)
return true;
return false;
}
static void
region_intersect_only_translation(pixman_region32_t *result_global,
pixman_region32_t *global,
pixman_region32_t *surf,
struct weston_view *view)
{
float view_x, view_y;
assert(view_transformation_is_translation(view));
/* Convert from surface to global coordinates */
pixman_region32_copy(result_global, surf);
weston_view_to_global_float(view, 0, 0, &view_x, &view_y);
pixman_region32_translate(result_global, (int)view_x, (int)view_y);
pixman_region32_intersect(result_global, result_global, global);
}
static void
composite_whole(pixman_op_t op,
pixman_image_t *src,
pixman_image_t *mask,
pixman_image_t *dest,
const pixman_transform_t *transform,
pixman_filter_t filter)
{
int32_t dest_width;
int32_t dest_height;
dest_width = pixman_image_get_width(dest);
dest_height = pixman_image_get_height(dest);
pixman_image_set_transform(src, transform);
pixman_image_set_filter(src, filter, NULL, 0);
pixman_image_composite32(op, src, mask, dest,
0, 0, /* src_x, src_y */
0, 0, /* mask_x, mask_y */
0, 0, /* dest_x, dest_y */
dest_width, dest_height);
}
static void
composite_clipped(pixman_image_t *src,
pixman_image_t *mask,
pixman_image_t *dest,
const pixman_transform_t *transform,
pixman_filter_t filter,
pixman_region32_t *src_clip)
{
int n_box;
pixman_box32_t *boxes;
int32_t dest_width;
int32_t dest_height;
int src_stride;
int bitspp;
pixman_format_code_t src_format;
void *src_data;
int i;
/* Hardcoded to use PIXMAN_OP_OVER, because sampling outside of
* a Pixman image produces (0,0,0,0) instead of discarding the
* fragment.
*/
dest_width = pixman_image_get_width(dest);
dest_height = pixman_image_get_height(dest);
src_format = pixman_image_get_format(src);
src_stride = pixman_image_get_stride(src);
bitspp = PIXMAN_FORMAT_BPP(src_format);
src_data = pixman_image_get_data(src);
assert(src_format);
/* This would be massive overdraw, except when n_box is 1. */
boxes = pixman_region32_rectangles(src_clip, &n_box);
for (i = 0; i < n_box; i++) {
uint8_t *ptr = src_data;
pixman_image_t *boximg;
pixman_transform_t adj = *transform;
ptr += boxes[i].y1 * src_stride;
ptr += boxes[i].x1 * bitspp / 8;
boximg = pixman_image_create_bits_no_clear(src_format,
boxes[i].x2 - boxes[i].x1,
boxes[i].y2 - boxes[i].y1,
(uint32_t *)ptr, src_stride);
pixman_transform_translate(&adj, NULL,
pixman_int_to_fixed(-boxes[i].x1),
pixman_int_to_fixed(-boxes[i].y1));
pixman_image_set_transform(boximg, &adj);
pixman_image_set_filter(boximg, filter, NULL, 0);
pixman_image_composite32(PIXMAN_OP_OVER, boximg, mask, dest,
0, 0, /* src_x, src_y */
0, 0, /* mask_x, mask_y */
0, 0, /* dest_x, dest_y */
dest_width, dest_height);
pixman_image_unref(boximg);
}
if (n_box > 1) {
static bool warned = false;
if (!warned)
weston_log("Pixman-renderer warning: %dx overdraw\n",
n_box);
warned = true;
}
}
/** Paint an intersected region
*
* \param ev The view to be painted.
* \param output The output being painted.
* \param repaint_output The region to be painted in output coordinates.
* \param source_clip The region of the source image to use, in source image
* coordinates. If NULL, use the whole source image.
* \param pixman_op Compositing operator, either SRC or OVER.
*/
static void
Split the geometry information from weston_surface out into weston_view The weston_surface structure is split into two structures: * The weston_surface structure storres everything required for a client-side or server-side surface. This includes buffers; callbacks; backend private data; input, damage, and opaque regions; and a few other bookkeeping bits. * The weston_view structure represents an entity in the scenegraph and storres all of the geometry information. This includes clip region, alpha, position, and the transformation list as well as all of the temporary information derived from the geometry state. Because a view, and not a surface, is a scenegraph element, the view is what is placed in layers and planes. There are a few things worth noting about the surface/view split: 1. This is *not* a modification to the protocol. It is, instead, a modification to Weston's internal scenegraph to allow a single surface to exist in multiple places at a time. Clients are completely unaware of how many views to a particular surface exist. 2. A view is considered a direct child of a surface and is destroyed when the surface is destroyed. Because of this, the view.surface pointer is always valid and non-null. 3. The compositor's surface_list is replaced with a view_list. Due to subsurfaces, building the view list is a little more complicated than it used to be and involves building a tree of views on the fly whenever subsurfaces are used. However, this means that backends can remain completely subsurface-agnostic. 4. Surfaces and views both keep track of which outputs they are on. 5. The weston_surface structure now has width and height fields. These are populated when a new buffer is attached before surface.configure is called. This is because there are many surface-based operations that really require the width and height and digging through the views didn't work well. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
11 years ago
repaint_region(struct weston_view *ev, struct weston_output *output,
pixman_region32_t *repaint_output,
pixman_region32_t *source_clip,
pixman_op_t pixman_op)
{
struct pixman_renderer *pr =
(struct pixman_renderer *) output->compositor->renderer;
Split the geometry information from weston_surface out into weston_view The weston_surface structure is split into two structures: * The weston_surface structure storres everything required for a client-side or server-side surface. This includes buffers; callbacks; backend private data; input, damage, and opaque regions; and a few other bookkeeping bits. * The weston_view structure represents an entity in the scenegraph and storres all of the geometry information. This includes clip region, alpha, position, and the transformation list as well as all of the temporary information derived from the geometry state. Because a view, and not a surface, is a scenegraph element, the view is what is placed in layers and planes. There are a few things worth noting about the surface/view split: 1. This is *not* a modification to the protocol. It is, instead, a modification to Weston's internal scenegraph to allow a single surface to exist in multiple places at a time. Clients are completely unaware of how many views to a particular surface exist. 2. A view is considered a direct child of a surface and is destroyed when the surface is destroyed. Because of this, the view.surface pointer is always valid and non-null. 3. The compositor's surface_list is replaced with a view_list. Due to subsurfaces, building the view list is a little more complicated than it used to be and involves building a tree of views on the fly whenever subsurfaces are used. However, this means that backends can remain completely subsurface-agnostic. 4. Surfaces and views both keep track of which outputs they are on. 5. The weston_surface structure now has width and height fields. These are populated when a new buffer is attached before surface.configure is called. This is because there are many surface-based operations that really require the width and height and digging through the views didn't work well. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
11 years ago
struct pixman_surface_state *ps = get_surface_state(ev->surface);
struct pixman_output_state *po = get_output_state(output);
struct weston_buffer_viewport *vp = &ev->surface->buffer_viewport;
pixman_transform_t transform;
pixman_filter_t filter;
pixman_image_t *mask_image;
pixman_color_t mask = { 0, };
/* Clip rendering to the damaged output region */
pixman_image_set_clip_region32(po->shadow_image, repaint_output);
pixman_renderer_compute_transform(&transform, ev, output);
if (ev->transform.enabled || output->current_scale != vp->buffer.scale)
filter = PIXMAN_FILTER_BILINEAR;
else
filter = PIXMAN_FILTER_NEAREST;
if (ps->buffer_ref.buffer)
wl_shm_buffer_begin_access(ps->buffer_ref.buffer->shm_buffer);
if (ev->alpha < 1.0) {
mask.alpha = 0xffff * ev->alpha;
mask_image = pixman_image_create_solid_fill(&mask);
} else {
mask_image = NULL;
}
if (source_clip)
composite_clipped(ps->image, mask_image, po->shadow_image,
&transform, filter, source_clip);
else
composite_whole(pixman_op, ps->image, mask_image,
po->shadow_image, &transform, filter);
if (mask_image)
pixman_image_unref(mask_image);
if (ps->buffer_ref.buffer)
wl_shm_buffer_end_access(ps->buffer_ref.buffer->shm_buffer);
if (pr->repaint_debug)
pixman_image_composite32(PIXMAN_OP_OVER,
pr->debug_color, /* src */
NULL /* mask */,
po->shadow_image, /* dest */
0, 0, /* src_x, src_y */
0, 0, /* mask_x, mask_y */
0, 0, /* dest_x, dest_y */
pixman_image_get_width (po->shadow_image), /* width */
pixman_image_get_height (po->shadow_image) /* height */);
pixman_image_set_clip_region32 (po->shadow_image, NULL);
}
static void
draw_view_translated(struct weston_view *view, struct weston_output *output,
pixman_region32_t *repaint_global)
{
struct weston_surface *surface = view->surface;
/* non-opaque region in surface coordinates: */
pixman_region32_t surface_blend;
/* region to be painted in output coordinates: */
pixman_region32_t repaint_output;
pixman_region32_init(&repaint_output);
/* Blended region is whole surface minus opaque region,
* unless surface alpha forces us to blend all.
*/
pixman_region32_init_rect(&surface_blend, 0, 0,
surface->width, surface->height);
if (!(view->alpha < 1.0)) {
pixman_region32_subtract(&surface_blend, &surface_blend,
&surface->opaque);
if (pixman_region32_not_empty(&surface->opaque)) {
region_intersect_only_translation(&repaint_output,
repaint_global,
&surface->opaque,
view);
region_global_to_output(output, &repaint_output);
repaint_region(view, output, &repaint_output, NULL,
PIXMAN_OP_SRC);
}
}
if (pixman_region32_not_empty(&surface_blend)) {
region_intersect_only_translation(&repaint_output,
repaint_global,
&surface_blend, view);
region_global_to_output(output, &repaint_output);
repaint_region(view, output, &repaint_output, NULL,
PIXMAN_OP_OVER);
}
pixman_region32_fini(&surface_blend);
pixman_region32_fini(&repaint_output);
}
static void
draw_view_source_clipped(struct weston_view *view,
struct weston_output *output,
pixman_region32_t *repaint_global)
{
struct weston_surface *surface = view->surface;
pixman_region32_t surf_region;
pixman_region32_t buffer_region;
pixman_region32_t repaint_output;
/* Do not bother separating the opaque region from non-opaque.
* Source clipping requires PIXMAN_OP_OVER in all cases, so painting
* opaque separately has no benefit.
*/
pixman_region32_init_rect(&surf_region, 0, 0,
surface->width, surface->height);
if (view->geometry.scissor_enabled)
pixman_region32_intersect(&surf_region, &surf_region,
&view->geometry.scissor);
pixman_region32_init(&buffer_region);
weston_surface_to_buffer_region(surface, &surf_region, &buffer_region);
pixman_region32_init(&repaint_output);
pixman_region32_copy(&repaint_output, repaint_global);
region_global_to_output(output, &repaint_output);
repaint_region(view, output, &repaint_output, &buffer_region,
PIXMAN_OP_OVER);
pixman_region32_fini(&repaint_output);
pixman_region32_fini(&buffer_region);
pixman_region32_fini(&surf_region);
}
static void
Split the geometry information from weston_surface out into weston_view The weston_surface structure is split into two structures: * The weston_surface structure storres everything required for a client-side or server-side surface. This includes buffers; callbacks; backend private data; input, damage, and opaque regions; and a few other bookkeeping bits. * The weston_view structure represents an entity in the scenegraph and storres all of the geometry information. This includes clip region, alpha, position, and the transformation list as well as all of the temporary information derived from the geometry state. Because a view, and not a surface, is a scenegraph element, the view is what is placed in layers and planes. There are a few things worth noting about the surface/view split: 1. This is *not* a modification to the protocol. It is, instead, a modification to Weston's internal scenegraph to allow a single surface to exist in multiple places at a time. Clients are completely unaware of how many views to a particular surface exist. 2. A view is considered a direct child of a surface and is destroyed when the surface is destroyed. Because of this, the view.surface pointer is always valid and non-null. 3. The compositor's surface_list is replaced with a view_list. Due to subsurfaces, building the view list is a little more complicated than it used to be and involves building a tree of views on the fly whenever subsurfaces are used. However, this means that backends can remain completely subsurface-agnostic. 4. Surfaces and views both keep track of which outputs they are on. 5. The weston_surface structure now has width and height fields. These are populated when a new buffer is attached before surface.configure is called. This is because there are many surface-based operations that really require the width and height and digging through the views didn't work well. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
11 years ago
draw_view(struct weston_view *ev, struct weston_output *output,
pixman_region32_t *damage) /* in global coordinates */
{
Split the geometry information from weston_surface out into weston_view The weston_surface structure is split into two structures: * The weston_surface structure storres everything required for a client-side or server-side surface. This includes buffers; callbacks; backend private data; input, damage, and opaque regions; and a few other bookkeeping bits. * The weston_view structure represents an entity in the scenegraph and storres all of the geometry information. This includes clip region, alpha, position, and the transformation list as well as all of the temporary information derived from the geometry state. Because a view, and not a surface, is a scenegraph element, the view is what is placed in layers and planes. There are a few things worth noting about the surface/view split: 1. This is *not* a modification to the protocol. It is, instead, a modification to Weston's internal scenegraph to allow a single surface to exist in multiple places at a time. Clients are completely unaware of how many views to a particular surface exist. 2. A view is considered a direct child of a surface and is destroyed when the surface is destroyed. Because of this, the view.surface pointer is always valid and non-null. 3. The compositor's surface_list is replaced with a view_list. Due to subsurfaces, building the view list is a little more complicated than it used to be and involves building a tree of views on the fly whenever subsurfaces are used. However, this means that backends can remain completely subsurface-agnostic. 4. Surfaces and views both keep track of which outputs they are on. 5. The weston_surface structure now has width and height fields. These are populated when a new buffer is attached before surface.configure is called. This is because there are many surface-based operations that really require the width and height and digging through the views didn't work well. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
11 years ago
struct pixman_surface_state *ps = get_surface_state(ev->surface);
/* repaint bounding region in global coordinates: */
pixman_region32_t repaint;
/* No buffer attached */
if (!ps->image)
return;
pixman_region32_init(&repaint);
pixman_region32_intersect(&repaint,
&ev->transform.boundingbox, damage);
Split the geometry information from weston_surface out into weston_view The weston_surface structure is split into two structures: * The weston_surface structure storres everything required for a client-side or server-side surface. This includes buffers; callbacks; backend private data; input, damage, and opaque regions; and a few other bookkeeping bits. * The weston_view structure represents an entity in the scenegraph and storres all of the geometry information. This includes clip region, alpha, position, and the transformation list as well as all of the temporary information derived from the geometry state. Because a view, and not a surface, is a scenegraph element, the view is what is placed in layers and planes. There are a few things worth noting about the surface/view split: 1. This is *not* a modification to the protocol. It is, instead, a modification to Weston's internal scenegraph to allow a single surface to exist in multiple places at a time. Clients are completely unaware of how many views to a particular surface exist. 2. A view is considered a direct child of a surface and is destroyed when the surface is destroyed. Because of this, the view.surface pointer is always valid and non-null. 3. The compositor's surface_list is replaced with a view_list. Due to subsurfaces, building the view list is a little more complicated than it used to be and involves building a tree of views on the fly whenever subsurfaces are used. However, this means that backends can remain completely subsurface-agnostic. 4. Surfaces and views both keep track of which outputs they are on. 5. The weston_surface structure now has width and height fields. These are populated when a new buffer is attached before surface.configure is called. This is because there are many surface-based operations that really require the width and height and digging through the views didn't work well. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
11 years ago
pixman_region32_subtract(&repaint, &repaint, &ev->clip);
if (!pixman_region32_not_empty(&repaint))
goto out;
if (view_transformation_is_translation(ev)) {
/* The simple case: The surface regions opaque, non-opaque,
* etc. are convertible to global coordinate space.
* There is no need to use a source clip region.
* It is possible to paint opaque region as PIXMAN_OP_SRC.
* Also the boundingbox is accurate rather than an
* approximation.
*/
draw_view_translated(ev, output, &repaint);
} else {
/* The complex case: the view transformation does not allow
* converting opaque etc. regions into global coordinate space.
* Therefore we need source clipping to avoid sampling from
* unwanted source image areas, unless the source image is
* to be used whole. Source clipping does not work with
* PIXMAN_OP_SRC.
*/
draw_view_source_clipped(ev, output, &repaint);
}
out:
pixman_region32_fini(&repaint);
}
static void
repaint_surfaces(struct weston_output *output, pixman_region32_t *damage)
{
struct weston_compositor *compositor = output->compositor;
Split the geometry information from weston_surface out into weston_view The weston_surface structure is split into two structures: * The weston_surface structure storres everything required for a client-side or server-side surface. This includes buffers; callbacks; backend private data; input, damage, and opaque regions; and a few other bookkeeping bits. * The weston_view structure represents an entity in the scenegraph and storres all of the geometry information. This includes clip region, alpha, position, and the transformation list as well as all of the temporary information derived from the geometry state. Because a view, and not a surface, is a scenegraph element, the view is what is placed in layers and planes. There are a few things worth noting about the surface/view split: 1. This is *not* a modification to the protocol. It is, instead, a modification to Weston's internal scenegraph to allow a single surface to exist in multiple places at a time. Clients are completely unaware of how many views to a particular surface exist. 2. A view is considered a direct child of a surface and is destroyed when the surface is destroyed. Because of this, the view.surface pointer is always valid and non-null. 3. The compositor's surface_list is replaced with a view_list. Due to subsurfaces, building the view list is a little more complicated than it used to be and involves building a tree of views on the fly whenever subsurfaces are used. However, this means that backends can remain completely subsurface-agnostic. 4. Surfaces and views both keep track of which outputs they are on. 5. The weston_surface structure now has width and height fields. These are populated when a new buffer is attached before surface.configure is called. This is because there are many surface-based operations that really require the width and height and digging through the views didn't work well. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
11 years ago
struct weston_view *view;
Split the geometry information from weston_surface out into weston_view The weston_surface structure is split into two structures: * The weston_surface structure storres everything required for a client-side or server-side surface. This includes buffers; callbacks; backend private data; input, damage, and opaque regions; and a few other bookkeeping bits. * The weston_view structure represents an entity in the scenegraph and storres all of the geometry information. This includes clip region, alpha, position, and the transformation list as well as all of the temporary information derived from the geometry state. Because a view, and not a surface, is a scenegraph element, the view is what is placed in layers and planes. There are a few things worth noting about the surface/view split: 1. This is *not* a modification to the protocol. It is, instead, a modification to Weston's internal scenegraph to allow a single surface to exist in multiple places at a time. Clients are completely unaware of how many views to a particular surface exist. 2. A view is considered a direct child of a surface and is destroyed when the surface is destroyed. Because of this, the view.surface pointer is always valid and non-null. 3. The compositor's surface_list is replaced with a view_list. Due to subsurfaces, building the view list is a little more complicated than it used to be and involves building a tree of views on the fly whenever subsurfaces are used. However, this means that backends can remain completely subsurface-agnostic. 4. Surfaces and views both keep track of which outputs they are on. 5. The weston_surface structure now has width and height fields. These are populated when a new buffer is attached before surface.configure is called. This is because there are many surface-based operations that really require the width and height and digging through the views didn't work well. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
11 years ago
wl_list_for_each_reverse(view, &compositor->view_list, link)
if (view->plane == &compositor->primary_plane)
draw_view(view, output, damage);
}
static void
copy_to_hw_buffer(struct weston_output *output, pixman_region32_t *region)
{
struct pixman_output_state *po = get_output_state(output);
pixman_region32_t output_region;
pixman_region32_init(&output_region);
pixman_region32_copy(&output_region, region);
region_global_to_output(output, &output_region);
pixman_image_set_clip_region32 (po->hw_buffer, &output_region);
pixman_region32_fini(&output_region);
pixman_image_composite32(PIXMAN_OP_SRC,
po->shadow_image, /* src */
NULL /* mask */,
po->hw_buffer, /* dest */
0, 0, /* src_x, src_y */
0, 0, /* mask_x, mask_y */
0, 0, /* dest_x, dest_y */
pixman_image_get_width (po->hw_buffer), /* width */
pixman_image_get_height (po->hw_buffer) /* height */);
pixman_image_set_clip_region32 (po->hw_buffer, NULL);
}
static void
pixman_renderer_repaint_output(struct weston_output *output,
pixman_region32_t *output_damage)
{
struct pixman_output_state *po = get_output_state(output);
if (!po->hw_buffer)
return;
repaint_surfaces(output, output_damage);
copy_to_hw_buffer(output, output_damage);
pixman_region32_copy(&output->previous_damage, output_damage);
wl_signal_emit(&output->frame_signal, output);
/* Actual flip should be done by caller */
}
static void
pixman_renderer_flush_damage(struct weston_surface *surface)
{
/* No-op for pixman renderer */
}
pixman: Destroy pixman images when underlying buffer is destroyed While the pixman image might be attached, the underlying buffer might be already gone under certain circumstances. This is easily reproduced by attempting to resize gnome-terminal on a fbdev backend. $ WAYLAND_DEBUG=1 strace -emunmap weston --backend=fbdev-backend.so ... [1524826.942] wl_shm@7.create_pool(new id wl_shm_pool@23, fd 40, 1563540) [1524827.315] wl_shm_pool@23.create_buffer(new id wl_buffer@24, 0, 759, 515, 3036, 0) ... [1524829.488] wl_surface@14.attach(wl_buffer@24, 0, 0) [1524829.766] wl_surface@14.set_buffer_scale(1) [1524829.904] wl_surface@14.damage(0, 0, 759, 515) [1524830.248] wl_surface@14.frame(new id wl_callback@25) [1524830.450] wl_surface@14.commit() ... [1524846.706] wl_shm@7.create_pool(new id wl_shm_pool@26, fd 40, 1545000) [1524847.215] wl_shm_pool@26.create_buffer(new id wl_buffer@27, 0, 750, 515, 3000, 0) [1524847.735] wl_buffer@24.destroy() [1524847.953] -> wl_display@1.delete_id(24) [1524848.144] wl_shm_pool@23.destroy() munmap(0xb5b2e000, 1563540) = 0 [1524849.021] -> wl_display@1.delete_id(23) [1524849.425] wl_surface@14.attach(wl_buffer@27, 0, 0) [1524849.730] wl_surface@14.set_buffer_scale(1) [1524849.821] wl_surface@14.damage(0, 0, 750, 515) <No commit yet, so drawing is attempted from older buffer that used to be attached to the surface, which happens to come from a destroyed pool, resulting it an invalid read from address 0xb5b2e000> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
11 years ago
static void
buffer_state_handle_buffer_destroy(struct wl_listener *listener, void *data)
{
struct pixman_surface_state *ps;
ps = container_of(listener, struct pixman_surface_state,
buffer_destroy_listener);
if (ps->image) {
pixman_image_unref(ps->image);
ps->image = NULL;
}
ps->buffer_destroy_listener.notify = NULL;
}
static void
pixman_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
{
struct pixman_surface_state *ps = get_surface_state(es);
struct wl_shm_buffer *shm_buffer;
pixman_format_code_t pixman_format;
weston_buffer_reference(&ps->buffer_ref, buffer);
pixman: Destroy pixman images when underlying buffer is destroyed While the pixman image might be attached, the underlying buffer might be already gone under certain circumstances. This is easily reproduced by attempting to resize gnome-terminal on a fbdev backend. $ WAYLAND_DEBUG=1 strace -emunmap weston --backend=fbdev-backend.so ... [1524826.942] wl_shm@7.create_pool(new id wl_shm_pool@23, fd 40, 1563540) [1524827.315] wl_shm_pool@23.create_buffer(new id wl_buffer@24, 0, 759, 515, 3036, 0) ... [1524829.488] wl_surface@14.attach(wl_buffer@24, 0, 0) [1524829.766] wl_surface@14.set_buffer_scale(1) [1524829.904] wl_surface@14.damage(0, 0, 759, 515) [1524830.248] wl_surface@14.frame(new id wl_callback@25) [1524830.450] wl_surface@14.commit() ... [1524846.706] wl_shm@7.create_pool(new id wl_shm_pool@26, fd 40, 1545000) [1524847.215] wl_shm_pool@26.create_buffer(new id wl_buffer@27, 0, 750, 515, 3000, 0) [1524847.735] wl_buffer@24.destroy() [1524847.953] -> wl_display@1.delete_id(24) [1524848.144] wl_shm_pool@23.destroy() munmap(0xb5b2e000, 1563540) = 0 [1524849.021] -> wl_display@1.delete_id(23) [1524849.425] wl_surface@14.attach(wl_buffer@27, 0, 0) [1524849.730] wl_surface@14.set_buffer_scale(1) [1524849.821] wl_surface@14.damage(0, 0, 750, 515) <No commit yet, so drawing is attempted from older buffer that used to be attached to the surface, which happens to come from a destroyed pool, resulting it an invalid read from address 0xb5b2e000> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
11 years ago
if (ps->buffer_destroy_listener.notify) {
wl_list_remove(&ps->buffer_destroy_listener.link);
ps->buffer_destroy_listener.notify = NULL;
}
if (ps->image) {
pixman_image_unref(ps->image);
ps->image = NULL;
}
if (!buffer)
return;
shm_buffer = wl_shm_buffer_get(buffer->resource);
if (! shm_buffer) {
weston_log("Pixman renderer supports only SHM buffers\n");
weston_buffer_reference(&ps->buffer_ref, NULL);
return;
}
switch (wl_shm_buffer_get_format(shm_buffer)) {
case WL_SHM_FORMAT_XRGB8888:
pixman_format = PIXMAN_x8r8g8b8;
break;
case WL_SHM_FORMAT_ARGB8888:
pixman_format = PIXMAN_a8r8g8b8;
break;
case WL_SHM_FORMAT_RGB565:
pixman_format = PIXMAN_r5g6b5;
break;
default:
weston_log("Unsupported SHM buffer format\n");
weston_buffer_reference(&ps->buffer_ref, NULL);
return;
break;
}
buffer->shm_buffer = shm_buffer;
buffer->width = wl_shm_buffer_get_width(shm_buffer);
buffer->height = wl_shm_buffer_get_height(shm_buffer);
ps->image = pixman_image_create_bits(pixman_format,
buffer->width, buffer->height,
wl_shm_buffer_get_data(shm_buffer),
wl_shm_buffer_get_stride(shm_buffer));
pixman: Destroy pixman images when underlying buffer is destroyed While the pixman image might be attached, the underlying buffer might be already gone under certain circumstances. This is easily reproduced by attempting to resize gnome-terminal on a fbdev backend. $ WAYLAND_DEBUG=1 strace -emunmap weston --backend=fbdev-backend.so ... [1524826.942] wl_shm@7.create_pool(new id wl_shm_pool@23, fd 40, 1563540) [1524827.315] wl_shm_pool@23.create_buffer(new id wl_buffer@24, 0, 759, 515, 3036, 0) ... [1524829.488] wl_surface@14.attach(wl_buffer@24, 0, 0) [1524829.766] wl_surface@14.set_buffer_scale(1) [1524829.904] wl_surface@14.damage(0, 0, 759, 515) [1524830.248] wl_surface@14.frame(new id wl_callback@25) [1524830.450] wl_surface@14.commit() ... [1524846.706] wl_shm@7.create_pool(new id wl_shm_pool@26, fd 40, 1545000) [1524847.215] wl_shm_pool@26.create_buffer(new id wl_buffer@27, 0, 750, 515, 3000, 0) [1524847.735] wl_buffer@24.destroy() [1524847.953] -> wl_display@1.delete_id(24) [1524848.144] wl_shm_pool@23.destroy() munmap(0xb5b2e000, 1563540) = 0 [1524849.021] -> wl_display@1.delete_id(23) [1524849.425] wl_surface@14.attach(wl_buffer@27, 0, 0) [1524849.730] wl_surface@14.set_buffer_scale(1) [1524849.821] wl_surface@14.damage(0, 0, 750, 515) <No commit yet, so drawing is attempted from older buffer that used to be attached to the surface, which happens to come from a destroyed pool, resulting it an invalid read from address 0xb5b2e000> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
11 years ago
ps->buffer_destroy_listener.notify =
buffer_state_handle_buffer_destroy;
wl_signal_add(&buffer->destroy_signal,
&ps->buffer_destroy_listener);
}
static void
pixman_renderer_surface_state_destroy(struct pixman_surface_state *ps)
{
wl_list_remove(&ps->surface_destroy_listener.link);
wl_list_remove(&ps->renderer_destroy_listener.link);
pixman: Destroy pixman images when underlying buffer is destroyed While the pixman image might be attached, the underlying buffer might be already gone under certain circumstances. This is easily reproduced by attempting to resize gnome-terminal on a fbdev backend. $ WAYLAND_DEBUG=1 strace -emunmap weston --backend=fbdev-backend.so ... [1524826.942] wl_shm@7.create_pool(new id wl_shm_pool@23, fd 40, 1563540) [1524827.315] wl_shm_pool@23.create_buffer(new id wl_buffer@24, 0, 759, 515, 3036, 0) ... [1524829.488] wl_surface@14.attach(wl_buffer@24, 0, 0) [1524829.766] wl_surface@14.set_buffer_scale(1) [1524829.904] wl_surface@14.damage(0, 0, 759, 515) [1524830.248] wl_surface@14.frame(new id wl_callback@25) [1524830.450] wl_surface@14.commit() ... [1524846.706] wl_shm@7.create_pool(new id wl_shm_pool@26, fd 40, 1545000) [1524847.215] wl_shm_pool@26.create_buffer(new id wl_buffer@27, 0, 750, 515, 3000, 0) [1524847.735] wl_buffer@24.destroy() [1524847.953] -> wl_display@1.delete_id(24) [1524848.144] wl_shm_pool@23.destroy() munmap(0xb5b2e000, 1563540) = 0 [1524849.021] -> wl_display@1.delete_id(23) [1524849.425] wl_surface@14.attach(wl_buffer@27, 0, 0) [1524849.730] wl_surface@14.set_buffer_scale(1) [1524849.821] wl_surface@14.damage(0, 0, 750, 515) <No commit yet, so drawing is attempted from older buffer that used to be attached to the surface, which happens to come from a destroyed pool, resulting it an invalid read from address 0xb5b2e000> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
11 years ago
if (ps->buffer_destroy_listener.notify) {
wl_list_remove(&ps->buffer_destroy_listener.link);
ps->buffer_destroy_listener.notify = NULL;
}
ps->surface->renderer_state = NULL;
if (ps->image) {
pixman_image_unref(ps->image);
ps->image = NULL;
}
weston_buffer_reference(&ps->buffer_ref, NULL);
free(ps);
}
static void
surface_state_handle_surface_destroy(struct wl_listener *listener, void *data)
{
struct pixman_surface_state *ps;
ps = container_of(listener, struct pixman_surface_state,
surface_destroy_listener);
pixman_renderer_surface_state_destroy(ps);
}
static void
surface_state_handle_renderer_destroy(struct wl_listener *listener, void *data)
{
struct pixman_surface_state *ps;
ps = container_of(listener, struct pixman_surface_state,
renderer_destroy_listener);
pixman_renderer_surface_state_destroy(ps);
}
static int
pixman_renderer_create_surface(struct weston_surface *surface)
{
struct pixman_surface_state *ps;
struct pixman_renderer *pr = get_renderer(surface->compositor);
ps = zalloc(sizeof *ps);
if (ps == NULL)
return -1;
surface->renderer_state = ps;
ps->surface = surface;
ps->surface_destroy_listener.notify =
surface_state_handle_surface_destroy;
wl_signal_add(&surface->destroy_signal,
&ps->surface_destroy_listener);
ps->renderer_destroy_listener.notify =
surface_state_handle_renderer_destroy;
wl_signal_add(&pr->destroy_signal,
&ps->renderer_destroy_listener);
return 0;
}
static void
pixman_renderer_surface_set_color(struct weston_surface *es,
float red, float green, float blue, float alpha)
{
struct pixman_surface_state *ps = get_surface_state(es);
pixman_color_t color;
color.red = red * 0xffff;
color.green = green * 0xffff;
color.blue = blue * 0xffff;
color.alpha = alpha * 0xffff;
if (ps->image) {
pixman_image_unref(ps->image);
ps->image = NULL;
}
ps->image = pixman_image_create_solid_fill(&color);
}
static void
pixman_renderer_destroy(struct weston_compositor *ec)
{
struct pixman_renderer *pr = get_renderer(ec);
wl_signal_emit(&pr->destroy_signal, pr);
weston_binding_destroy(pr->debug_binding);
free(pr);
ec->renderer = NULL;
}
static void
pixman_renderer_surface_get_content_size(struct weston_surface *surface,
int *width, int *height)
{
struct pixman_surface_state *ps = get_surface_state(surface);
if (ps->image) {
*width = pixman_image_get_width(ps->image);
*height = pixman_image_get_height(ps->image);
} else {
*width = 0;
*height = 0;
}
}
static int
pixman_renderer_surface_copy_content(struct weston_surface *surface,
void *target, size_t size,
int src_x, int src_y,
int width, int height)
{
const pixman_format_code_t format = PIXMAN_a8b8g8r8;
const size_t bytespp = 4; /* PIXMAN_a8b8g8r8 */
struct pixman_surface_state *ps = get_surface_state(surface);
pixman_image_t *out_buf;
if (!ps->image)
return -1;
out_buf = pixman_image_create_bits(format, width, height,
target, width * bytespp);
pixman_image_set_transform(ps->image, NULL);
pixman_image_composite32(PIXMAN_OP_SRC,
ps->image, /* src */
NULL, /* mask */
out_buf, /* dest */
src_x, src_y, /* src_x, src_y */
0, 0, /* mask_x, mask_y */
0, 0, /* dest_x, dest_y */
width, height);
pixman_image_unref(out_buf);
return 0;
}
static void
debug_binding(struct weston_keyboard *keyboard, uint32_t time, uint32_t key,
void *data)
{
struct weston_compositor *ec = data;
struct pixman_renderer *pr = (struct pixman_renderer *) ec->renderer;
pr->repaint_debug ^= 1;
if (pr->repaint_debug) {
pixman_color_t red = {
0x3fff, 0x0000, 0x0000, 0x3fff
};
pr->debug_color = pixman_image_create_solid_fill(&red);
} else {
pixman_image_unref(pr->debug_color);
weston_compositor_damage_all(ec);
}
}
WL_EXPORT int
pixman_renderer_init(struct weston_compositor *ec)
{
struct pixman_renderer *renderer;
renderer = zalloc(sizeof *renderer);
if (renderer == NULL)
return -1;
renderer->repaint_debug = 0;
renderer->debug_color = NULL;
renderer->base.read_pixels = pixman_renderer_read_pixels;
renderer->base.repaint_output = pixman_renderer_repaint_output;
renderer->base.flush_damage = pixman_renderer_flush_damage;
renderer->base.attach = pixman_renderer_attach;
renderer->base.surface_set_color = pixman_renderer_surface_set_color;
renderer->base.destroy = pixman_renderer_destroy;
renderer->base.surface_get_content_size =
pixman_renderer_surface_get_content_size;
renderer->base.surface_copy_content =
pixman_renderer_surface_copy_content;
ec->renderer = &renderer->base;
ec->capabilities |= WESTON_CAP_ROTATION_ANY;
ec->capabilities |= WESTON_CAP_CAPTURE_YFLIP;
ec->capabilities |= WESTON_CAP_VIEW_CLIP_MASK;
renderer->debug_binding =
weston_compositor_add_debug_binding(ec, KEY_R,
debug_binding, ec);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_RGB565);
wl_signal_init(&renderer->destroy_signal);
return 0;
}
WL_EXPORT void
pixman_renderer_output_set_buffer(struct weston_output *output, pixman_image_t *buffer)
{
struct pixman_output_state *po = get_output_state(output);
if (po->hw_buffer)
pixman_image_unref(po->hw_buffer);
po->hw_buffer = buffer;
if (po->hw_buffer) {
output->compositor->read_format = pixman_image_get_format(po->hw_buffer);
pixman_image_ref(po->hw_buffer);
}
}
WL_EXPORT int
pixman_renderer_output_create(struct weston_output *output)
{
struct pixman_output_state *po;
int w, h;
po = zalloc(sizeof *po);
if (po == NULL)
return -1;
/* set shadow image transformation */
w = output->current_mode->width;
h = output->current_mode->height;
po->shadow_buffer = malloc(w * h * 4);
if (!po->shadow_buffer) {
free(po);
return -1;
}
po->shadow_image =
pixman_image_create_bits(PIXMAN_x8r8g8b8, w, h,
po->shadow_buffer, w * 4);
if (!po->shadow_image) {
free(po->shadow_buffer);
free(po);
return -1;
}
output->renderer_state = po;
return 0;
}
WL_EXPORT void
pixman_renderer_output_destroy(struct weston_output *output)
{
struct pixman_output_state *po = get_output_state(output);
pixman_image_unref(po->shadow_image);
if (po->hw_buffer)
pixman_image_unref(po->hw_buffer);
free(po->shadow_buffer);
po->shadow_buffer = NULL;
po->shadow_image = NULL;
po->hw_buffer = NULL;
free(po);
}