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wayland: Add support for EGL_WAYLAND_Y_INVERTED_WL

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Add support for inverted Y Wayland buffers. OpenGL textures are by
default inverted, so adding support for EGL_WAYLAND_Y_INVERTED_WL
effectively means adding support for non-inverted, which makes the
MetaShapedTexture apply a transformation when drawing only when querying
EGL_WAYLAND_Y_INVERTED_WL resulted in the response "EGL_FALSE".

https://bugzilla.gnome.org/show_bug.cgi?id=773629
This commit is contained in:
Jonas Ådahl
2016-10-20 15:44:27 +08:00
parent 23455985cd
commit 41c96921d6
5 changed files with 128 additions and 43 deletions
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15
src/wayland/meta-wayland-buffer.c
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@ -191,6 +191,7 @@ shm_buffer_attach (MetaWaylandBuffer *buffer,
wl_shm_buffer_end_access (shm_buffer);
buffer->texture = texture;
buffer->is_y_inverted = TRUE;
if (!buffer->texture)
return FALSE;
@ -208,7 +209,7 @@ egl_image_buffer_attach (MetaWaylandBuffer *buffer,
CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
EGLDisplay egl_display = cogl_egl_context_get_egl_display (cogl_context);
EGLContext egl_context = cogl_egl_context_get_egl_context (cogl_context);
int format, width, height;
int format, width, height, y_inverted;
CoglPixelFormat cogl_format;
EGLImageKHR egl_image;
CoglTexture2D *texture;
@ -231,6 +232,11 @@ egl_image_buffer_attach (MetaWaylandBuffer *buffer,
error))
return FALSE;
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_WAYLAND_Y_INVERTED_WL, &y_inverted,
NULL))
y_inverted = EGL_TRUE;
switch (format)
{
case EGL_TEXTURE_RGB:
@ -265,6 +271,7 @@ egl_image_buffer_attach (MetaWaylandBuffer *buffer,
return FALSE;
buffer->texture = COGL_TEXTURE (texture);
buffer->is_y_inverted = !!y_inverted;
return TRUE;
}
@ -301,6 +308,12 @@ meta_wayland_buffer_get_texture (MetaWaylandBuffer *buffer)
return buffer->texture;
}
gboolean
meta_wayland_buffer_is_y_inverted (MetaWaylandBuffer *buffer)
{
return buffer->is_y_inverted;
}
static gboolean
process_shm_buffer_damage (MetaWaylandBuffer *buffer,
cairo_region_t *region,