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dmabuf-paintable: Build the texture when snapshot is called

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Always creating the texture even if the app is not being displayed
(minimized / different virtual monitor) or
if the GdkFrameClock drops a frame we end up doing a comparison with a
very old frame causing full redraws in certain cases or even artifacts
in others.

Instead, we only build the texture once snapshot is called and accumulate
the damage area until that happens to avoid updating the wrong area
This commit is contained in:
Bilal Elmoussaoui 2023-08-15 10:56:10 +02:00
parent f9d91ddb60
commit 640587ed0f
1 changed files with 92 additions and 68 deletions
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160
lib/mks-dmabuf-paintable.c
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@ -35,67 +35,20 @@
* so we can pass the damage region to `GdkGLTextureBuilder`.
*/
struct _MksDmabufPaintable
{
GObject parent_instance;
GdkTexture *texture;
guint width;
guint height;
};
typedef struct _MksDmabufTextureData
{
GdkGLContext *gl_context;
GLuint texture_id;
} MksDmabufTextureData;
static int
mks_dmabuf_paintable_get_intrinsic_width (GdkPaintable *paintable)
struct _MksDmabufPaintable
{
return MKS_DMABUF_PAINTABLE (paintable)->width;
}
static int
mks_dmabuf_paintable_get_intrinsic_height (GdkPaintable *paintable)
{
return MKS_DMABUF_PAINTABLE (paintable)->height;
}
static double
mks_dmabuf_paintable_get_intrinsic_aspect_ratio (GdkPaintable *paintable)
{
MksDmabufPaintable *self = MKS_DMABUF_PAINTABLE (paintable);
return (double)self->width / (double)self->height;
}
static void
mks_dmabuf_paintable_snapshot (GdkPaintable *paintable,
GdkSnapshot *snapshot,
double width,
double height)
{
MksDmabufPaintable *self = (MksDmabufPaintable *)paintable;
graphene_rect_t area;
g_assert (MKS_IS_DMABUF_PAINTABLE (self));
g_assert (GDK_IS_SNAPSHOT (snapshot));
area = GRAPHENE_RECT_INIT (0, 0, width, height);
gtk_snapshot_append_texture (snapshot, self->texture, &area);
}
static void
paintable_iface_init (GdkPaintableInterface *iface)
{
iface->get_intrinsic_width = mks_dmabuf_paintable_get_intrinsic_width;
iface->get_intrinsic_height = mks_dmabuf_paintable_get_intrinsic_height;
iface->get_intrinsic_aspect_ratio = mks_dmabuf_paintable_get_intrinsic_aspect_ratio;
iface->snapshot = mks_dmabuf_paintable_snapshot;
}
G_DEFINE_FINAL_TYPE_WITH_CODE (MksDmabufPaintable, mks_dmabuf_paintable, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE, paintable_iface_init))
GObject parent_instance;
GdkTexture *texture;
GdkGLTextureBuilder *builder;
guint width;
guint height;
};
static MksDmabufTextureData *
mks_dmabuf_texture_data_new (GdkGLContext *gl_context,
@ -127,12 +80,76 @@ mks_dmabuf_texture_data_free (gpointer data)
g_free (texture_data);
}
static int
mks_dmabuf_paintable_get_intrinsic_width (GdkPaintable *paintable)
{
return MKS_DMABUF_PAINTABLE (paintable)->width;
}
static int
mks_dmabuf_paintable_get_intrinsic_height (GdkPaintable *paintable)
{
return MKS_DMABUF_PAINTABLE (paintable)->height;
}
static double
mks_dmabuf_paintable_get_intrinsic_aspect_ratio (GdkPaintable *paintable)
{
MksDmabufPaintable *self = MKS_DMABUF_PAINTABLE (paintable);
return (double)self->width / (double)self->height;
}
static void
mks_dmabuf_paintable_snapshot (GdkPaintable *paintable,
GdkSnapshot *snapshot,
double width,
double height)
{
MksDmabufPaintable *self = (MksDmabufPaintable *)paintable;
g_autoptr(GdkTexture) texture = NULL;
GdkGLContext *gl_context;
GLuint texture_id;
graphene_rect_t area;
g_assert (MKS_IS_DMABUF_PAINTABLE (self));
g_assert (GDK_IS_SNAPSHOT (snapshot));
texture_id = gdk_gl_texture_builder_get_id (self->builder);
gl_context = gdk_gl_texture_builder_get_context (self->builder);
gdk_gl_texture_builder_set_update_texture (self->builder, self->texture);
texture = gdk_gl_texture_builder_build (self->builder,
mks_dmabuf_texture_data_free,
mks_dmabuf_texture_data_new (gl_context,
texture_id));
// Clear up the update region to not union it with the next UpdateDMABuf call
gdk_gl_texture_builder_set_update_region (self->builder, NULL);
g_set_object (&self->texture, texture);
area = GRAPHENE_RECT_INIT (0, 0, width, height);
gtk_snapshot_append_texture (snapshot, self->texture, &area);
}
static void
paintable_iface_init (GdkPaintableInterface *iface)
{
iface->get_intrinsic_width = mks_dmabuf_paintable_get_intrinsic_width;
iface->get_intrinsic_height = mks_dmabuf_paintable_get_intrinsic_height;
iface->get_intrinsic_aspect_ratio = mks_dmabuf_paintable_get_intrinsic_aspect_ratio;
iface->snapshot = mks_dmabuf_paintable_snapshot;
}
G_DEFINE_FINAL_TYPE_WITH_CODE (MksDmabufPaintable, mks_dmabuf_paintable, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE, paintable_iface_init))
static void
mks_dmabuf_paintable_dispose (GObject *object)
{
MksDmabufPaintable *self = (MksDmabufPaintable *)object;
g_clear_object (&self->texture);
g_clear_object (&self->builder);
G_OBJECT_CLASS (mks_dmabuf_paintable_parent_class)->dispose (object);
}
@ -157,8 +174,8 @@ mks_dmabuf_paintable_import (MksDmabufPaintable *self,
cairo_region_t *region,
GError **error)
{
g_autoptr(GdkGLTextureBuilder) builder = NULL;
g_autoptr(GdkTexture) texture = NULL;
cairo_region_t *accumulated_damages;
cairo_region_t *previous_region;
GLuint texture_id;
guint zero = 0;
@ -204,25 +221,32 @@ mks_dmabuf_paintable_import (MksDmabufPaintable *self,
return FALSE;
}
builder = gdk_gl_texture_builder_new ();
gdk_gl_texture_builder_set_id (builder, texture_id);
gdk_gl_texture_builder_set_width (builder, self->width);
gdk_gl_texture_builder_set_height (builder, self->height);
gdk_gl_texture_builder_set_context (builder, gl_context);
accumulated_damages = cairo_region_create ();
if (region != NULL)
cairo_region_union (accumulated_damages, region);
if (self->builder != NULL)
{
gdk_gl_texture_builder_set_update_region (builder, region);
gdk_gl_texture_builder_set_update_texture (builder, self->texture);
previous_region = gdk_gl_texture_builder_get_update_region (self->builder);
if (previous_region != NULL)
cairo_region_union (accumulated_damages, previous_region);
}
texture = gdk_gl_texture_builder_build (builder,
mks_dmabuf_texture_data_free,
mks_dmabuf_texture_data_new (gl_context, texture_id));
g_clear_object (&self->builder);
g_set_object (&self->texture, texture);
self->builder = gdk_gl_texture_builder_new ();
gdk_gl_texture_builder_set_width (self->builder, self->width);
gdk_gl_texture_builder_set_height (self->builder, self->height);
gdk_gl_texture_builder_set_context (self->builder, gl_context);
gdk_gl_texture_builder_set_id (self->builder, texture_id);
if (cairo_region_num_rectangles (accumulated_damages) > 0)
gdk_gl_texture_builder_set_update_region (self->builder,
accumulated_damages);
g_clear_pointer (&accumulated_damages, cairo_region_destroy);
gdk_paintable_invalidate_contents (GDK_PAINTABLE (self));
return TRUE;
}