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https://gitlab.gnome.org/GNOME/gtk.git
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glcontext: Make the creation of EGL context more obvious
By splitting it into its own function it becomes more that the EGL code is a shared implementation.
This commit is contained in:
Pablo Correa Gómez
parent
a0374334d4
commit
0f21f6c273
@ -1,7 +1,7 @@
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/* GDK - The GIMP Drawing Kit
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*
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* gdkglcontext.c: GL context abstraction
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*
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*
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* Copyright © 2014 Emmanuele Bassi
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*
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* This library is free software; you can redistribute it and/or
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@ -258,178 +258,185 @@ gdk_gl_context_get_property (GObject *object,
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#define N_EGL_ATTRS 16
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static GdkGLAPI
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gdk_gl_context_real_realize (GdkGLContext *context,
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GError **error)
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gdk_gl_context_realize_egl (GdkGLContext *context,
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GError **error)
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{
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#ifdef HAVE_EGL
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GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (context);
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GdkDisplay *display = gdk_gl_context_get_display (context);
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EGLDisplay egl_display = gdk_display_get_egl_display (display);
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if (egl_display)
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EGLConfig egl_config;
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GdkGLContext *share = gdk_display_get_gl_context (display);
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GdkGLContextPrivate *share_priv = gdk_gl_context_get_instance_private (share);
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EGLContext ctx;
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EGLint context_attribs[N_EGL_ATTRS];
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int major, minor, flags;
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gboolean debug_bit, forward_bit, legacy_bit;
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GdkGLAPI api;
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int i = 0;
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G_GNUC_UNUSED gint64 start_time = GDK_PROFILER_CURRENT_TIME;
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if (share != NULL)
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gdk_gl_context_get_required_version (share, &major, &minor);
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else
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gdk_gl_context_get_required_version (context, &major, &minor);
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debug_bit = gdk_gl_context_get_debug_enabled (context);
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forward_bit = gdk_gl_context_get_forward_compatible (context);
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legacy_bit = GDK_DISPLAY_DEBUG_CHECK (display, GL_LEGACY) ||
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(share != NULL && gdk_gl_context_is_legacy (share));
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if (display->have_egl_no_config_context)
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egl_config = NULL;
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else
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egl_config = gdk_display_get_egl_config (display);
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flags = 0;
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if (debug_bit)
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flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
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if (forward_bit)
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flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
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if (gdk_gl_context_is_api_allowed (context, GDK_GL_API_GL, NULL) &&
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eglBindAPI (EGL_OPENGL_API))
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{
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EGLConfig egl_config;
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GdkGLContext *share = gdk_display_get_gl_context (display);
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GdkGLContextPrivate *share_priv = gdk_gl_context_get_instance_private (share);
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EGLContext ctx;
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EGLint context_attribs[N_EGL_ATTRS];
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int major, minor, flags;
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gboolean debug_bit, forward_bit, legacy_bit;
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GdkGLAPI api;
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int i = 0;
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G_GNUC_UNUSED gint64 start_time = GDK_PROFILER_CURRENT_TIME;
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/* We want a core profile, unless in legacy mode */
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context_attribs[i++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
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context_attribs[i++] = legacy_bit
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? EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR
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: EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
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if (share != NULL)
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gdk_gl_context_get_required_version (share, &major, &minor);
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/* Specify the version */
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context_attribs[i++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
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context_attribs[i++] = legacy_bit ? 3 : major;
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context_attribs[i++] = EGL_CONTEXT_MINOR_VERSION_KHR;
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context_attribs[i++] = legacy_bit ? 0 : minor;
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api = GDK_GL_API_GL;
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}
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else if (gdk_gl_context_is_api_allowed (context, GDK_GL_API_GLES, NULL) &&
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eglBindAPI (EGL_OPENGL_ES_API))
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{
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context_attribs[i++] = EGL_CONTEXT_CLIENT_VERSION;
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if (major == 3)
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context_attribs[i++] = 3;
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else
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gdk_gl_context_get_required_version (context, &major, &minor);
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context_attribs[i++] = 2;
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api = GDK_GL_API_GLES;
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}
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else
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{
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g_set_error_literal (error, GDK_GL_ERROR, GDK_GL_ERROR_NOT_AVAILABLE,
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_("The EGL implementation does not support any allowed APIs"));
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return 0;
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}
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debug_bit = gdk_gl_context_get_debug_enabled (context);
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forward_bit = gdk_gl_context_get_forward_compatible (context);
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legacy_bit = GDK_DISPLAY_DEBUG_CHECK (display, GL_LEGACY) ||
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(share != NULL && gdk_gl_context_is_legacy (share));
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/* Specify the flags */
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context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
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context_attribs[i++] = flags;
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if (display->have_egl_no_config_context)
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egl_config = NULL;
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else
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egl_config = gdk_display_get_egl_config (display);
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context_attribs[i++] = EGL_NONE;
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g_assert (i < N_EGL_ATTRS);
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flags = 0;
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GDK_DISPLAY_NOTE (display, OPENGL,
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g_message ("Creating EGL context version %d.%d (debug:%s, forward:%s, legacy:%s, es:%s)",
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major, minor,
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debug_bit ? "yes" : "no",
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forward_bit ? "yes" : "no",
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legacy_bit ? "yes" : "no",
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api == GDK_GL_API_GLES ? "yes" : "no"));
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if (debug_bit)
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flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
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if (forward_bit)
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flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
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ctx = eglCreateContext (egl_display,
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egl_config,
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share != NULL ? share_priv->egl_context
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: EGL_NO_CONTEXT,
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context_attribs);
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if (gdk_gl_context_is_api_allowed (context, GDK_GL_API_GL, NULL) &&
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eglBindAPI (EGL_OPENGL_API))
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{
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/* We want a core profile, unless in legacy mode */
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context_attribs[i++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
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context_attribs[i++] = legacy_bit
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? EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR
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: EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
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/* Specify the version */
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context_attribs[i++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
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context_attribs[i++] = legacy_bit ? 3 : major;
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context_attribs[i++] = EGL_CONTEXT_MINOR_VERSION_KHR;
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context_attribs[i++] = legacy_bit ? 0 : minor;
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api = GDK_GL_API_GL;
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}
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else if (gdk_gl_context_is_api_allowed (context, GDK_GL_API_GLES, NULL) &&
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eglBindAPI (EGL_OPENGL_ES_API))
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{
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context_attribs[i++] = EGL_CONTEXT_CLIENT_VERSION;
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if (major == 3)
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context_attribs[i++] = 3;
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else
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context_attribs[i++] = 2;
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api = GDK_GL_API_GLES;
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}
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else
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{
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g_set_error_literal (error, GDK_GL_ERROR, GDK_GL_ERROR_NOT_AVAILABLE,
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_("The EGL implementation does not support any allowed APIs"));
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return 0;
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}
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/* Specify the flags */
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/* If context creation failed without the ES bit, let's try again with it */
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if (ctx == NULL && gdk_gl_context_is_api_allowed (context, GDK_GL_API_GLES, NULL) && eglBindAPI (EGL_OPENGL_ES_API))
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{
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i = 0;
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context_attribs[i++] = EGL_CONTEXT_MAJOR_VERSION;
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context_attribs[i++] = 2;
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context_attribs[i++] = EGL_CONTEXT_MINOR_VERSION;
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context_attribs[i++] = 0;
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context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
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context_attribs[i++] = flags;
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context_attribs[i++] = flags & ~EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
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context_attribs[i++] = EGL_NONE;
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g_assert (i < N_EGL_ATTRS);
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GDK_DISPLAY_NOTE (display, OPENGL,
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g_message ("Creating EGL context version %d.%d (debug:%s, forward:%s, legacy:%s, es:%s)",
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major, minor,
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debug_bit ? "yes" : "no",
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forward_bit ? "yes" : "no",
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legacy_bit ? "yes" : "no",
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api == GDK_GL_API_GLES ? "yes" : "no"));
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legacy_bit = FALSE;
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api = GDK_GL_API_GLES;
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GDK_DISPLAY_NOTE (display, OPENGL,
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g_message ("eglCreateContext failed, switching to OpenGL ES"));
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ctx = eglCreateContext (egl_display,
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egl_config,
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share != NULL ? share_priv->egl_context
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: EGL_NO_CONTEXT,
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: EGL_NO_CONTEXT,
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context_attribs);
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/* If context creation failed without the ES bit, let's try again with it */
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if (ctx == NULL && gdk_gl_context_is_api_allowed (context, GDK_GL_API_GLES, NULL) && eglBindAPI (EGL_OPENGL_ES_API))
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{
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i = 0;
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context_attribs[i++] = EGL_CONTEXT_MAJOR_VERSION;
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context_attribs[i++] = 2;
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context_attribs[i++] = EGL_CONTEXT_MINOR_VERSION;
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context_attribs[i++] = 0;
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context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
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context_attribs[i++] = flags & ~EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
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context_attribs[i++] = EGL_NONE;
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g_assert (i < N_EGL_ATTRS);
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legacy_bit = FALSE;
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api = GDK_GL_API_GLES;
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GDK_DISPLAY_NOTE (display, OPENGL,
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g_message ("eglCreateContext failed, switching to OpenGL ES"));
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ctx = eglCreateContext (egl_display,
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egl_config,
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share != NULL ? share_priv->egl_context
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: EGL_NO_CONTEXT,
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context_attribs);
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}
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/* If context creation failed without the legacy bit, let's try again with it */
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if (ctx == NULL && gdk_gl_context_is_api_allowed (context, GDK_GL_API_GL, NULL) && eglBindAPI (EGL_OPENGL_API))
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{
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i = 0;
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context_attribs[i++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
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context_attribs[i++] = EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR;
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context_attribs[i++] = EGL_CONTEXT_MAJOR_VERSION;
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context_attribs[i++] = 3;
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context_attribs[i++] = EGL_CONTEXT_MINOR_VERSION;
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context_attribs[i++] = 0;
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context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
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context_attribs[i++] = flags & ~EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
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context_attribs[i++] = EGL_NONE;
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g_assert (i < N_EGL_ATTRS);
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legacy_bit = TRUE;
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api = GDK_GL_API_GL;
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GDK_DISPLAY_NOTE (display, OPENGL,
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g_message ("eglCreateContext failed, switching to legacy"));
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ctx = eglCreateContext (egl_display,
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egl_config,
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share != NULL ? share_priv->egl_context
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: EGL_NO_CONTEXT,
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context_attribs);
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}
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if (ctx == NULL)
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{
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g_set_error_literal (error, GDK_GL_ERROR,
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GDK_GL_ERROR_NOT_AVAILABLE,
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_("Unable to create a GL context"));
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return 0;
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}
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GDK_DISPLAY_NOTE (display, OPENGL, g_message ("Created EGL context[%p]", ctx));
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priv->egl_context = ctx;
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gdk_gl_context_set_is_legacy (context, legacy_bit);
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if (epoxy_has_egl_extension (egl_display, "EGL_KHR_swap_buffers_with_damage"))
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priv->eglSwapBuffersWithDamage = (gpointer)epoxy_eglGetProcAddress ("eglSwapBuffersWithDamageKHR");
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else if (epoxy_has_egl_extension (egl_display, "EGL_EXT_swap_buffers_with_damage"))
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priv->eglSwapBuffersWithDamage = (gpointer)epoxy_eglGetProcAddress ("eglSwapBuffersWithDamageEXT");
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gdk_profiler_end_mark (start_time, "realize GdkWaylandGLContext", NULL);
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return api;
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}
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/* If context creation failed without the legacy bit, let's try again with it */
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if (ctx == NULL && gdk_gl_context_is_api_allowed (context, GDK_GL_API_GL, NULL) && eglBindAPI (EGL_OPENGL_API))
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{
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i = 0;
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context_attribs[i++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
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context_attribs[i++] = EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR;
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context_attribs[i++] = EGL_CONTEXT_MAJOR_VERSION;
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context_attribs[i++] = 3;
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context_attribs[i++] = EGL_CONTEXT_MINOR_VERSION;
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context_attribs[i++] = 0;
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context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
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context_attribs[i++] = flags & ~EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
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context_attribs[i++] = EGL_NONE;
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g_assert (i < N_EGL_ATTRS);
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legacy_bit = TRUE;
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api = GDK_GL_API_GL;
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GDK_DISPLAY_NOTE (display, OPENGL,
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g_message ("eglCreateContext failed, switching to legacy"));
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ctx = eglCreateContext (egl_display,
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egl_config,
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share != NULL ? share_priv->egl_context
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: EGL_NO_CONTEXT,
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context_attribs);
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}
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if (ctx == NULL)
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{
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g_set_error_literal (error, GDK_GL_ERROR,
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GDK_GL_ERROR_NOT_AVAILABLE,
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_("Unable to create a GL context"));
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return 0;
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}
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GDK_DISPLAY_NOTE (display, OPENGL, g_message ("Created EGL context[%p]", ctx));
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priv->egl_context = ctx;
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gdk_gl_context_set_is_legacy (context, legacy_bit);
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if (epoxy_has_egl_extension (egl_display, "EGL_KHR_swap_buffers_with_damage"))
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priv->eglSwapBuffersWithDamage = (gpointer)epoxy_eglGetProcAddress ("eglSwapBuffersWithDamageKHR");
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else if (epoxy_has_egl_extension (egl_display, "EGL_EXT_swap_buffers_with_damage"))
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priv->eglSwapBuffersWithDamage = (gpointer)epoxy_eglGetProcAddress ("eglSwapBuffersWithDamageEXT");
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gdk_profiler_end_mark (start_time, "realize GdkWaylandGLContext", NULL);
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return api;
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}
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static GdkGLAPI
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gdk_gl_context_default_realize (GdkGLContext *context,
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GError **error)
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{
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#ifdef HAVE_EGL
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GdkDisplay *display = gdk_gl_context_get_display (context);
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if (gdk_display_get_egl_display (display))
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return gdk_gl_context_realize_egl (context, error);
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#endif
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g_set_error_literal (error, GDK_GL_ERROR, GDK_GL_ERROR_NOT_AVAILABLE,
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@ -666,7 +673,7 @@ gdk_gl_context_class_init (GdkGLContextClass *klass)
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GdkDrawContextClass *draw_context_class = GDK_DRAW_CONTEXT_CLASS (klass);
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klass->realize = gdk_gl_context_real_realize;
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klass->realize = gdk_gl_context_default_realize;
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klass->get_damage = gdk_gl_context_real_get_damage;
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klass->is_shared = gdk_gl_context_real_is_shared;
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klass->make_current = gdk_gl_context_real_make_current;
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@ -1799,7 +1806,7 @@ gboolean
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gdk_gl_backend_can_be_used (GdkGLBackend backend_type,
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GError **error)
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{
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if (the_gl_backend_type == GDK_GL_NONE ||
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if (the_gl_backend_type == GDK_GL_NONE ||
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the_gl_backend_type == backend_type)
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return TRUE;
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@ -1837,4 +1844,3 @@ gdk_gl_backend_use (GdkGLBackend backend_type)
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g_assert (the_gl_backend_type == backend_type);
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}
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