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stage: Implement buffer-transform support in MetaOverlay

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This allows the GL fallback path to correctly paint the cursor
if clients pre-rotated the buffer using
`wl_surface::set_buffer_transform`, visually matching the
hardware cursor path.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/344>
This commit is contained in:
Robert Mader 2022-06-22 14:08:24 +02:00
parent df27017ba3
commit f804fe3a82
3 changed files with 37 additions and 17 deletions
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13
src/backends/meta-cursor-renderer.c
View File

@ -135,8 +135,9 @@ meta_cursor_renderer_update_stage_overlay (MetaCursorRenderer *renderer,
{
MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
ClutterActor *stage = meta_backend_get_stage (priv->backend);
CoglTexture *texture;
CoglTexture *texture = NULL;
graphene_rect_t rect = GRAPHENE_RECT_INIT_ZERO;
MetaMonitorTransform buffer_transform = META_MONITOR_TRANSFORM_NORMAL;
g_set_object (&priv->overlay_cursor, cursor_sprite);
@ -150,13 +151,15 @@ meta_cursor_renderer_update_stage_overlay (MetaCursorRenderer *renderer,
priv->stage_overlay = meta_stage_create_cursor_overlay (META_STAGE (stage));
if (cursor_sprite)
texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
else
texture = NULL;
{
texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
buffer_transform =
meta_cursor_sprite_get_texture_transform (cursor_sprite);
}
meta_overlay_set_visible (priv->stage_overlay, !priv->handled_by_backend);
meta_stage_update_cursor_overlay (META_STAGE (stage), priv->stage_overlay,
texture, &rect);
texture, &rect, buffer_transform);
}
static void

9
src/backends/meta-stage-private.h
View File

@ -50,10 +50,11 @@ MetaOverlay *meta_stage_create_cursor_overlay (MetaStage *stage);
void meta_stage_remove_cursor_overlay (MetaStage *stage,
MetaOverlay *overlay);
void meta_stage_update_cursor_overlay (MetaStage *stage,
MetaOverlay *overlay,
CoglTexture *texture,
graphene_rect_t *rect);
void meta_stage_update_cursor_overlay (MetaStage *stage,
MetaOverlay *overlay,
CoglTexture *texture,
graphene_rect_t *rect,
MetaMonitorTransform buffer_transform);
void meta_overlay_set_visible (MetaOverlay *overlay,
gboolean is_visible);

32
src/backends/meta-stage.c
View File

@ -58,6 +58,8 @@ struct _MetaOverlay
CoglPipeline *pipeline;
CoglTexture *texture;
MetaMonitorTransform buffer_transform;
graphene_rect_t current_rect;
graphene_rect_t previous_rect;
gboolean previous_is_valid;
@ -102,9 +104,10 @@ meta_overlay_free (MetaOverlay *overlay)
}
static void
meta_overlay_set (MetaOverlay *overlay,
CoglTexture *texture,
graphene_rect_t *rect)
meta_overlay_set (MetaOverlay *overlay,
CoglTexture *texture,
graphene_rect_t *rect,
MetaMonitorTransform buffer_transform)
{
if (overlay->texture != texture)
{
@ -116,6 +119,18 @@ meta_overlay_set (MetaOverlay *overlay,
cogl_pipeline_set_layer_texture (overlay->pipeline, 0, NULL);
}
if (overlay->buffer_transform != buffer_transform)
{
graphene_matrix_t matrix;
graphene_matrix_init_identity (&matrix);
meta_monitor_transform_transform_matrix (buffer_transform,
&matrix);
cogl_pipeline_set_layer_matrix (overlay->pipeline, 0, &matrix);
overlay->buffer_transform = buffer_transform;
}
overlay->current_rect = *rect;
}
@ -404,12 +419,13 @@ meta_stage_remove_cursor_overlay (MetaStage *stage,
}
void
meta_stage_update_cursor_overlay (MetaStage *stage,
MetaOverlay *overlay,
CoglTexture *texture,
graphene_rect_t *rect)
meta_stage_update_cursor_overlay (MetaStage *stage,
MetaOverlay *overlay,
CoglTexture *texture,
graphene_rect_t *rect,
MetaMonitorTransform buffer_transform)
{
meta_overlay_set (overlay, texture, rect);
meta_overlay_set (overlay, texture, rect, buffer_transform);
queue_redraw_for_overlay (stage, overlay);
}