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glcontext: Handle failure of eglBindAPI()

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We don't want to be sure if we have GL or GLES.
This commit is contained in:
Benjamin Otte 2021-10-06 02:36:59 +02:00
parent 2ff1ea555f
commit 3ca84c4357
1 changed files with 11 additions and 13 deletions
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24
gdk/gdkglcontext.c
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@ -384,10 +384,8 @@ gdk_gl_context_real_realize (GdkGLContext *context,
if (forward_bit)
flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
if (!use_es)
if (!use_es && eglBindAPI (EGL_OPENGL_API))
{
eglBindAPI (EGL_OPENGL_API);
/* We want a core profile, unless in legacy mode */
context_attribs[i++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
context_attribs[i++] = legacy_bit
@ -400,16 +398,20 @@ gdk_gl_context_real_realize (GdkGLContext *context,
context_attribs[i++] = EGL_CONTEXT_MINOR_VERSION_KHR;
context_attribs[i++] = legacy_bit ? 0 : minor;
}
else
else if (eglBindAPI (EGL_OPENGL_ES_API))
{
eglBindAPI (EGL_OPENGL_ES_API);
context_attribs[i++] = EGL_CONTEXT_CLIENT_VERSION;
if (major == 3)
context_attribs[i++] = 3;
else
context_attribs[i++] = 2;
}
else
{
g_set_error_literal (error, GDK_GL_ERROR, GDK_GL_ERROR_NOT_AVAILABLE,
_("The EGL implementation supports neither OpenGL nor GLES"));
return FALSE;
}
/* Specify the flags */
context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
@ -433,7 +435,7 @@ gdk_gl_context_real_realize (GdkGLContext *context,
context_attribs);
/* If context creation failed without the ES bit, let's try again with it */
if (ctx == NULL)
if (ctx == NULL && eglBindAPI (EGL_OPENGL_ES_API))
{
i = 0;
context_attribs[i++] = EGL_CONTEXT_MAJOR_VERSION;
@ -445,8 +447,6 @@ gdk_gl_context_real_realize (GdkGLContext *context,
context_attribs[i++] = EGL_NONE;
g_assert (i < N_EGL_ATTRS);
eglBindAPI (EGL_OPENGL_ES_API);
legacy_bit = FALSE;
use_es = TRUE;
@ -460,7 +460,7 @@ gdk_gl_context_real_realize (GdkGLContext *context,
}
/* If context creation failed without the legacy bit, let's try again with it */
if (ctx == NULL)
if (ctx == NULL && eglBindAPI (EGL_OPENGL_API))
{
i = 0;
context_attribs[i++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
@ -474,8 +474,6 @@ gdk_gl_context_real_realize (GdkGLContext *context,
context_attribs[i++] = EGL_NONE;
g_assert (i < N_EGL_ATTRS);
eglBindAPI (EGL_OPENGL_API);
legacy_bit = TRUE;
use_es = FALSE;
@ -510,7 +508,7 @@ gdk_gl_context_real_realize (GdkGLContext *context,
#endif
g_set_error_literal (error, GDK_GL_ERROR, GDK_GL_ERROR_NOT_AVAILABLE,
"The current backend does not support OpenGL");
_("The current backend does not support OpenGL"));
return FALSE;
}