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wgl: Improve error messages when GL init fails

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In particular, we want to get the GL version, when the Windows box/VM
has an unsuitable GL implementation.

This is somewhat helpful in analyzing failures to bring up GL on
machines where users claim GL does work.
This commit is contained in:
Benjamin Otte 2023-04-26 18:08:59 +02:00
parent d6afcee1e4
commit 9254ab8503
1 changed files with 48 additions and 23 deletions
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49
gdk/win32/gdkglcontext-win32-wgl.c
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@ -331,7 +331,8 @@ static gboolean
ensure_legacy_wgl_context (HDC hdc,
HGLRC hglrc_legacy,
GdkGLContext *share,
GdkGLVersion *version)
GdkGLVersion *version,
GError **error)
{
GdkWin32GLContextWGL *context_wgl;
GdkGLVersion legacy_version;
@ -342,11 +343,25 @@ ensure_legacy_wgl_context (HDC hdc,
gdk_gl_version_get_minor (version)));
if (!wglMakeCurrent (hdc, hglrc_legacy))
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
return FALSE;
}
gdk_gl_version_init_epoxy (&legacy_version);
if (!gdk_gl_version_greater_equal (&legacy_version, version))
{
g_set_error (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("WGL version %d.%d is too low, need at least %d.%d"),
gdk_gl_version_get_major (&legacy_version),
gdk_gl_version_get_minor (&legacy_version),
gdk_gl_version_get_major (version),
gdk_gl_version_get_minor (version));
return FALSE;
}
*version = legacy_version;
@ -354,7 +369,13 @@ ensure_legacy_wgl_context (HDC hdc,
{
context_wgl = GDK_WIN32_GL_CONTEXT_WGL (share);
return wglShareLists (hglrc_legacy, context_wgl->wgl_context);
if (!wglShareLists (hglrc_legacy, context_wgl->wgl_context))
{
g_set_error (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_PROFILE,
_("GL implementation cannot share GL contexts"));
return FALSE;
}
}
return TRUE;
@ -421,7 +442,8 @@ create_wgl_context (GdkGLContext *context,
gboolean hasWglARBCreateContext,
GdkGLContext *share,
int flags,
gboolean legacy)
gboolean legacy,
GError **error)
{
/* We need a legacy context for *all* cases */
HGLRC hglrc_base, hglrc;
@ -431,7 +453,15 @@ create_wgl_context (GdkGLContext *context,
HGLRC hglrc_current = wglGetCurrentContext ();
hglrc_base = wglCreateContext (hdc);
wglMakeCurrent (hdc, hglrc_base);
if (hglrc_base == NULL ||
!wglMakeCurrent (hdc, hglrc_base))
{
g_clear_pointer (&hglrc_base, wglDeleteContext);
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
return 0;
}
hglrc = NULL;
@ -473,7 +503,7 @@ create_wgl_context (GdkGLContext *context,
GDK_GL_API_GL,
TRUE,
&version);
if (ensure_legacy_wgl_context (hdc, hglrc_base, share, &version))
if (ensure_legacy_wgl_context (hdc, hglrc_base, share, &version, error))
hglrc = g_steal_pointer (&hglrc_base);
}
@ -585,15 +615,10 @@ gdk_win32_gl_context_wgl_realize (GdkGLContext *context,
display_win32->hasWglARBCreateContext,
share,
flags,
legacy_bit);
legacy_bit,
error);
if (hglrc == NULL)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
return 0;
}
GDK_NOTE (OPENGL,
g_print ("Created WGL context[%p], pixel_format=%d\n",