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Adds gles2-context renderer constraint
This adds a new renderer constraint enum: COGL_RENDERER_CONSTRAINT_SUPPORTS_GLES2_CONTEXT that can be used by applications to ensure the renderer they connect to has support for creating a GLES2 context via cogl_gles2_context_new(). The cogl-gles2-context and cogl-gles2-gears examples and the conformance tests have been updated to use this constraint. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit ed61463d7194354b26624e8014859f0fbfc06a12)
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8d0b771cd3
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498937083e
@ -241,10 +241,25 @@ _cogl_renderer_choose_driver (CoglRenderer *renderer,
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{
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const char *driver_name = g_getenv ("COGL_DRIVER");
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const char *libgl_name;
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CoglBool support_gles2_constraint = FALSE;
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GList *l;
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if (!driver_name)
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driver_name = _cogl_config_driver;
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for (l = renderer->constraints; l; l = l->next)
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{
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CoglRendererConstraint constraint = GPOINTER_TO_UINT (l->data);
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if (constraint == COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2)
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{
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support_gles2_constraint = TRUE;
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if (!driver_name && renderer->driver_override == COGL_DRIVER_ANY)
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renderer->driver_override = COGL_DRIVER_GLES2;
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break;
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}
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}
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#ifdef HAVE_COGL_GL
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if (renderer->driver_override == COGL_DRIVER_GL ||
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(renderer->driver_override == COGL_DRIVER_ANY &&
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@ -284,7 +299,17 @@ _cogl_renderer_choose_driver (CoglRenderer *renderer,
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"No suitable driver found");
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return FALSE;
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found:
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found:
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if (support_gles2_constraint &&
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renderer->driver != COGL_DRIVER_GLES2)
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{
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g_set_error (error,
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COGL_RENDERER_ERROR,
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COGL_RENDERER_ERROR_BAD_CONSTRAINT,
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"No suitable driver found");
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return FALSE;
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}
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#ifndef HAVE_DIRECTLY_LINKED_GL_LIBRARY
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@ -312,6 +337,7 @@ cogl_renderer_connect (CoglRenderer *renderer, GError **error)
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{
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int i;
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GString *error_message;
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CoglBool constraints_failed = FALSE;
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if (renderer->connected)
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return TRUE;
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@ -328,7 +354,7 @@ cogl_renderer_connect (CoglRenderer *renderer, GError **error)
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const CoglWinsysVtable *winsys = _cogl_winsys_vtable_getters[i]();
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GError *tmp_error = NULL;
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GList *l;
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CoglBool constraints_failed = FALSE;
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CoglBool skip_due_to_constraints = FALSE;
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if (renderer->winsys_id_override != COGL_WINSYS_ID_ANY)
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{
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@ -350,12 +376,15 @@ cogl_renderer_connect (CoglRenderer *renderer, GError **error)
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CoglRendererConstraint constraint = GPOINTER_TO_UINT (l->data);
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if (!(winsys->constraints & constraint))
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{
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constraints_failed = TRUE;
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skip_due_to_constraints = TRUE;
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break;
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}
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}
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if (constraints_failed)
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continue;
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if (skip_due_to_constraints)
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{
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constraints_failed |= TRUE;
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continue;
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}
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/* At least temporarily we will associate this winsys with
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* the renderer in-case ->renderer_connect calls API that
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@ -378,6 +407,14 @@ cogl_renderer_connect (CoglRenderer *renderer, GError **error)
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if (!renderer->connected)
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{
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if (constraints_failed)
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{
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g_set_error (error, COGL_RENDERER_ERROR,
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COGL_RENDERER_ERROR_BAD_CONSTRAINT,
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"Failed to connected to any renderer due to constraints");
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return FALSE;
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}
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renderer->winsys_vtable = NULL;
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g_set_error (error, COGL_WINSYS_ERROR,
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COGL_WINSYS_ERROR_INIT,
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@ -261,6 +261,10 @@ cogl_renderer_connect (CoglRenderer *renderer, GError **error);
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* @COGL_RENDERER_CONSTRAINT_USES_XLIB: Require the renderer to be X11
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* based and use Xlib
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* @COGL_RENDERER_CONSTRAINT_USES_EGL: Require the renderer to be EGL based
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* @COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2: Require that the
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* renderer supports creating a #CoglGLES2Context via
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* cogl_gles2_context_new(). This can be used to integrate GLES 2.0
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* code into Cogl based applications.
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*
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* These constraint flags are hard-coded features of the different renderer
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* backends. Sometimes a platform may support multiple rendering options which
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@ -281,7 +285,8 @@ typedef enum
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{
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COGL_RENDERER_CONSTRAINT_USES_X11 = (1 << 0),
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COGL_RENDERER_CONSTRAINT_USES_XLIB = (1 << 1),
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COGL_RENDERER_CONSTRAINT_USES_EGL = (1 << 2)
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COGL_RENDERER_CONSTRAINT_USES_EGL = (1 << 2),
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COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2 = (1 << 3)
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} CoglRendererConstraint;
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@ -737,7 +737,8 @@ typedef enum
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typedef enum { /*< prefix=COGL_RENDERER_ERROR >*/
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COGL_RENDERER_ERROR_NOT_FOUND,
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COGL_RENDERER_ERROR_XLIB_DISPLAY_OPEN
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COGL_RENDERER_ERROR_XLIB_DISPLAY_OPEN,
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COGL_RENDERER_ERROR_BAD_CONSTRAINT
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} CoglRendererError;
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/*
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@ -809,7 +809,8 @@ _cogl_winsys_restore_context (CoglContext *ctx)
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static CoglWinsysVtable _cogl_winsys_vtable =
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{
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.constraints = COGL_RENDERER_CONSTRAINT_USES_EGL,
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.constraints = COGL_RENDERER_CONSTRAINT_USES_EGL |
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COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2,
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/* This winsys is only used as a base for the EGL-platform
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winsys's so it does not have an ID or a name */
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@ -79,8 +79,14 @@ main (int argc, char **argv)
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};
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GSource *cogl_source;
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GMainLoop *loop;
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CoglRenderer *renderer;
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CoglDisplay *display;
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data.ctx = cogl_context_new (NULL, NULL);
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renderer = cogl_renderer_new ();
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cogl_renderer_add_constraint (renderer,
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COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2);
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display = cogl_display_new (renderer, NULL);
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data.ctx = cogl_context_new (display, NULL);
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onscreen = cogl_onscreen_new (data.ctx, 640, 480);
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cogl_onscreen_show (onscreen);
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@ -758,8 +758,14 @@ main (int argc, char **argv)
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GError *error = NULL;
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GSource *cogl_source;
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GMainLoop *loop;
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CoglRenderer *renderer;
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CoglDisplay *display;
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data.ctx = cogl_context_new (NULL, NULL);
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renderer = cogl_renderer_new ();
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cogl_renderer_add_constraint (renderer,
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COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2);
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display = cogl_display_new (renderer, NULL);
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data.ctx = cogl_context_new (display, NULL);
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onscreen = cogl_onscreen_new (data.ctx, 300, 300);
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cogl_onscreen_show (onscreen);
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@ -99,7 +99,7 @@ main (int argc, char **argv)
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UNPORTED_TEST (test_viewport);
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ADD_TEST (test_gles2_context, 0);
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ADD_TEST (test_gles2_context, TEST_REQUIREMENT_GLES2_CONTEXT);
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g_printerr ("Unknown test name \"%s\"\n", argv[1]);
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@ -76,6 +76,12 @@ test_utils_init (TestFlags flags)
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missing_requirement = TRUE;
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}
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if (flags & TEST_REQUIREMENT_GLES2_CONTEXT &&
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!cogl_has_feature (ctx, COGL_FEATURE_ID_GLES2_CONTEXT))
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{
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missing_requirement = TRUE;
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}
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if (flags & TEST_KNOWN_FAILURE)
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{
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missing_requirement = TRUE;
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@ -9,11 +9,12 @@
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typedef enum _TestFlags
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{
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TEST_KNOWN_FAILURE = 1<<0,
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TEST_REQUIREMENT_GL = 1<<1,
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TEST_REQUIREMENT_NPOT = 1<<2,
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TEST_REQUIREMENT_TEXTURE_3D = 1<<3,
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TEST_REQUIREMENT_POINT_SPRITE = 1<<4
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TEST_KNOWN_FAILURE = 1<<0,
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TEST_REQUIREMENT_GL = 1<<1,
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TEST_REQUIREMENT_NPOT = 1<<2,
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TEST_REQUIREMENT_TEXTURE_3D = 1<<3,
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TEST_REQUIREMENT_POINT_SPRITE = 1<<4,
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TEST_REQUIREMENT_GLES2_CONTEXT = 1<<5
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} TestFlags;
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extern CoglContext *ctx;
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