mirror of
https://github.com/brl/mutter.git
synced 2024-09-20 22:46:02 -04:00
15d7a86621
The only backend that tried to implement offscreen stages was the GLX backend and even this has apparently be broken for some time without anyone noticing. The property still remains and since the property already clearly states that it may not work I don't expect anyone to notice. This simplifies quite a bit of the GLX code which is very desireable from the POV that we want to start migrating window system code down to Cogl and the simpler the code is the more straight forward this work will be. In the future when Cogl has a nicely designed API for framebuffer objects then re-implementing offscreen stages cleanly for *all* backends should be quite straightforward.
288 lines
8.9 KiB
C
288 lines
8.9 KiB
C
#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-stage-egl.h"
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#include "clutter-egl.h"
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#include "clutter-backend-egl.h"
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#include "../clutter-main.h"
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#include "../clutter-feature.h"
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#include "../clutter-color.h"
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#include "../clutter-util.h"
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#include "../clutter-event.h"
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#include "../clutter-enum-types.h"
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#include "../clutter-private.h"
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#include "../clutter-debug.h"
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#include "../clutter-units.h"
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#include "../clutter-stage.h"
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#include "../clutter-stage-window.h"
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static void clutter_stage_window_iface_init (ClutterStageWindowIface *iface);
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G_DEFINE_TYPE_WITH_CODE (ClutterStageEGL,
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clutter_stage_egl,
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CLUTTER_TYPE_ACTOR,
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G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_STAGE_WINDOW,
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clutter_stage_window_iface_init));
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static void
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clutter_stage_egl_show (ClutterActor *actor)
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{
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CLUTTER_ACTOR_SET_FLAGS (actor, CLUTTER_ACTOR_MAPPED);
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CLUTTER_ACTOR_SET_FLAGS (CLUTTER_STAGE_EGL (actor)->wrapper,
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CLUTTER_ACTOR_MAPPED);
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}
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static void
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clutter_stage_egl_hide (ClutterActor *actor)
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{
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CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_MAPPED);
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CLUTTER_ACTOR_UNSET_FLAGS (CLUTTER_STAGE_EGL (actor)->wrapper,
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CLUTTER_ACTOR_MAPPED);
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}
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static void
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clutter_stage_egl_unrealize (ClutterActor *actor)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (actor);
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CLUTTER_MARK();
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if (CLUTTER_ACTOR_CLASS (clutter_stage_egl_parent_class)->unrealize != NULL)
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CLUTTER_ACTOR_CLASS (clutter_stage_egl_parent_class)->unrealize (actor);
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if (stage_egl->egl_surface)
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{
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eglDestroySurface (clutter_egl_display (), stage_egl->egl_surface);
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stage_egl->egl_surface = EGL_NO_SURFACE;
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}
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}
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static void
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clutter_stage_egl_realize (ClutterActor *actor)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (actor);
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ClutterBackendEGL *backend_egl;
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EGLConfig configs[2];
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EGLint config_count;
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EGLBoolean status;
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EGLint cfg_attribs[] = { EGL_BUFFER_SIZE, EGL_DONT_CARE,
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EGL_RED_SIZE, 5,
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EGL_GREEN_SIZE, 6,
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EGL_BLUE_SIZE, 5,
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EGL_DEPTH_SIZE, 16,
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EGL_ALPHA_SIZE, EGL_DONT_CARE,
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EGL_STENCIL_SIZE, 2,
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#ifdef HAVE_COGL_GLES2
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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#else /* HAVE_COGL_GLES2 */
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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#endif /* HAVE_COGL_GLES2 */
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EGL_NONE };
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CLUTTER_NOTE (BACKEND, "Realizing main stage");
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backend_egl = CLUTTER_BACKEND_EGL (clutter_get_default_backend ());
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status = eglGetConfigs (backend_egl->edpy,
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configs,
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2,
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&config_count);
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if (status != EGL_TRUE)
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{
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g_critical ("eglGetConfigs failed");
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CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
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return;
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}
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status = eglChooseConfig (backend_egl->edpy,
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cfg_attribs,
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configs,
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G_N_ELEMENTS (configs),
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&config_count);
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if (status != EGL_TRUE)
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{
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g_critical ("eglChooseConfig failed");
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CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
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return;
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}
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CLUTTER_NOTE (BACKEND, "Got %i configs", config_count);
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if (stage_egl->egl_surface != EGL_NO_SURFACE)
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{
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eglDestroySurface (backend_egl->edpy, stage_egl->egl_surface);
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stage_egl->egl_surface = EGL_NO_SURFACE;
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}
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if (backend_egl->egl_context)
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{
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eglDestroyContext (backend_egl->edpy, backend_egl->egl_context);
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backend_egl->egl_context = NULL;
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}
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stage_egl->egl_surface =
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eglCreateWindowSurface (backend_egl->edpy,
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configs[0],
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NULL,
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NULL);
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if (stage_egl->egl_surface == EGL_NO_SURFACE)
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{
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g_critical ("Unable to create an EGL surface");
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CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
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return;
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}
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eglQuerySurface (backend_egl->edpy,
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stage_egl->egl_surface,
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EGL_WIDTH,
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&stage_egl->surface_width);
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eglQuerySurface (backend_egl->edpy,
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stage_egl->egl_surface,
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EGL_HEIGHT,
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&stage_egl->surface_height);
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CLUTTER_NOTE (BACKEND, "EGL surface is %ix%i",
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stage_egl->surface_width,
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stage_egl->surface_height);
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if (G_UNLIKELY (backend_egl->egl_context == NULL))
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{
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#ifdef HAVE_COGL_GLES2
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static const EGLint attribs[3]
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= { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
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backend_egl->egl_context = eglCreateContext (backend_egl->edpy,
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configs[0],
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EGL_NO_CONTEXT,
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attribs);
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#else
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/* Seems some GLES implementations 1.x do not like attribs... */
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backend_egl->egl_context = eglCreateContext (backend_egl->edpy,
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configs[0],
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EGL_NO_CONTEXT,
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NULL);
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#endif
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if (backend_egl->egl_context == EGL_NO_CONTEXT)
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{
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g_critical ("Unable to create a suitable EGL context");
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CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
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return;
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}
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CLUTTER_NOTE (GL, "Created EGL Context");
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}
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CLUTTER_NOTE (BACKEND, "Setting context");
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/* eglnative can have only one stage */
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status = eglMakeCurrent (backend_egl->edpy,
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stage_egl->egl_surface,
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stage_egl->egl_surface,
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backend_egl->egl_context);
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if (status != EGL_TRUE)
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{
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g_critical ("eglMakeCurrent failed");
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CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
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return;
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}
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/* since we only have one size and it cannot change, we
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* just need to update the GL viewport now that we have
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* been realized
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*/
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CLUTTER_SET_PRIVATE_FLAGS (actor, CLUTTER_ACTOR_SYNC_MATRICES);
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}
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static void
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clutter_stage_egl_get_preferred_width (ClutterActor *self,
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gfloat for_height,
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gfloat *min_width_p,
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gfloat *natural_width_p)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (self);
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if (min_width_p)
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*min_width_p = CLUTTER_UNITS_FROM_DEVICE (stage_egl->surface_width);
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if (natural_width_p)
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*natural_width_p = CLUTTER_UNITS_FROM_DEVICE (stage_egl->surface_width);
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}
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static void
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clutter_stage_egl_get_preferred_height (ClutterActor *self,
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gfloat for_width,
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gfloat *min_height_p,
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gfloat *natural_height_p)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (self);
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if (min_height_p)
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*min_height_p = CLUTTER_UNITS_FROM_DEVICE (stage_egl->surface_height);
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if (natural_height_p)
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*natural_height_p = CLUTTER_UNITS_FROM_DEVICE (stage_egl->surface_height);
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}
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static void
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clutter_stage_egl_dispose (GObject *gobject)
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{
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ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (gobject);
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G_OBJECT_CLASS (clutter_stage_egl_parent_class)->dispose (gobject);
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}
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static void
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clutter_stage_egl_class_init (ClutterStageEGLClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
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gobject_class->dispose = clutter_stage_egl_dispose;
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actor_class->show = clutter_stage_egl_show;
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actor_class->hide = clutter_stage_egl_hide;
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actor_class->realize = clutter_stage_egl_realize;
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actor_class->unrealize = clutter_stage_egl_unrealize;
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actor_class->get_preferred_width = clutter_stage_egl_get_preferred_width;
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actor_class->get_preferred_height = clutter_stage_egl_get_preferred_height;
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}
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static void
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clutter_stage_egl_set_fullscreen (ClutterStageWindow *stage_window,
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gboolean fullscreen)
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{
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g_warning ("Stage of type '%s' do not support ClutterStage::set_fullscreen",
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G_OBJECT_TYPE_NAME (stage_window));
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}
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static ClutterActor *
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clutter_stage_egl_get_wrapper (ClutterStageWindow *stage_window)
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{
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return CLUTTER_ACTOR (CLUTTER_STAGE_EGL (stage_window)->wrapper);
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}
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static void
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clutter_stage_window_iface_init (ClutterStageWindowIface *iface)
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{
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iface->set_fullscreen = clutter_stage_egl_set_fullscreen;
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iface->set_title = NULL;
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iface->get_wrapper = clutter_stage_egl_get_wrapper;
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}
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static void
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clutter_stage_egl_init (ClutterStageEGL *stage)
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{
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}
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