Test for using GLES1/2 without GLX installed.

test/.gitignore

@@ -1,4 +1,6 @@
 egl_has_extension_nocontext
+egl_gles1_without_glx
+egl_gles2_without_glx
 glx_beginend
 glx_glxgetprocaddress_nocontext
 glx_has_extension_nocontext

test/Makefile.am

@@ -56,11 +56,18 @@ TESTS = \
 	miscdefines$(EXEEXT) \
 	$()
 
+XFAIL_TESTS = \
+        egl_gles1_without_glx \
+        egl_gles2_without_glx \
+	$()
+
 check_PROGRAMS = $(TESTS)
 
 if BUILD_EGL
 EGL_TESTS = \
 	egl_has_extension_nocontext \
+	egl_gles1_without_glx \
+	egl_gles2_without_glx \
 	$()
 
 EGL_LIBS = libegl_common.la
@@ -95,6 +102,16 @@ endif
 egl_has_extension_nocontext_LDFLAGS = $(X11_LIBS) $(EPOXY) libegl_common.la
 egl_has_extension_nocontext_DEPENDENCIES = $(EPOXY) libegl_common.la
 
+egl_gles1_without_glx_CPPFLAGS = $(AM_CPPFLAGS) -DGLES_VERSION=1
+egl_gles1_without_glx_SOURCES = egl_without_glx.c
+egl_gles1_without_glx_LDFLAGS = $(X11_LIBS) $(EPOXY) $(DLOPEN_LIBS) libegl_common.la
+egl_gles1_without_glx_DEPENDENCIES = $(EPOXY) libegl_common.la
+
+egl_gles2_without_glx_CPPFLAGS = $(AM_CPPFLAGS) -DGLES_VERSION=2
+egl_gles2_without_glx_SOURCES = egl_without_glx.c
+egl_gles2_without_glx_LDFLAGS = $(X11_LIBS) $(EPOXY) $(DLOPEN_LIBS) libegl_common.la
+egl_gles2_without_glx_DEPENDENCIES = $(EPOXY) libegl_common.la
+
 glx_beginend_LDFLAGS = $(X11_LIBS) $(EPOXY) libglx_common.la $(GL_LIBS)
 glx_beginend_DEPENDENCIES = $(EPOXY) libglx_common.la
 

test/egl_without_glx.c

@@ -0,0 +1,113 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/**
+ * @file egl_without_glx.c
+ *
+ * Tries to test operation of the library on a system with a GLES
+ * installed but no GLX.  This test is varied by the GLES_VERSION
+ * defined at compile time to test either a GLES1-only or a GLES2-only
+ * system.
+ */
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <err.h>
+#include <dlfcn.h>
+#include "epoxy/gl.h"
+#include "epoxy/egl.h"
+
+#include "egl_common.h"
+
+/**
+ * Wraps the system dlopen(), which libepoxy will end up calling when
+ * it tries to dlopen() the API libraries, and errors out the
+ * libraries we're trying to simulate not being installed on the
+ * system.
+ */
+void *
+dlopen(const char *filename, int flag)
+{
+    void * (*dlopen_unwrapped)(const char *filename, int flag);
+
+    if (!strcmp(filename, "libGL.so.1"))
+        return NULL;
+#if GLES_VERSION == 2
+    if (!strcmp(filename, "libGLESv1_CM.so.1"))
+        return NULL;
+#else
+    if (!strcmp(filename, "libGLESv2.so.2"))
+        return NULL;
+#endif
+
+    dlopen_unwrapped = dlsym(RTLD_NEXT, "dlopen");
+    assert(dlopen_unwrapped);
+
+    return dlopen_unwrapped(filename, flag);
+}
+
+int
+main(int argc, char **argv)
+{
+    bool pass = true;
+    EGLDisplay *dpy = get_egl_display_or_skip();
+    EGLint context_attribs[] = {
+        EGL_CONTEXT_CLIENT_VERSION, GLES_VERSION,
+        EGL_NONE
+    };
+    EGLConfig cfg;
+    EGLint config_attribs[] = {
+	EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+	EGL_RED_SIZE, 1,
+	EGL_GREEN_SIZE, 1,
+	EGL_BLUE_SIZE, 1,
+	EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
+	EGL_NONE
+    };
+    EGLint count;
+    EGLContext ctx;
+    const unsigned char *string;
+
+    if (!epoxy_has_egl_extension(dpy, "EGL_KHR_surfaceless_context"))
+        errx(77, "Test requires EGL_KHR_surfaceless_context");
+
+    eglBindAPI(EGL_OPENGL_ES_API);
+
+    if (!eglChooseConfig(dpy, config_attribs, &cfg, 1, &count))
+        errx(77, "Couldn't get an EGLConfig\n");
+
+    ctx = eglCreateContext(dpy, cfg, NULL, context_attribs);
+    if (!ctx)
+        errx(77, "Couldn't create a GLES%d context\n", GLES_VERSION);
+
+    eglMakeCurrent(dpy, NULL, NULL, ctx);
+
+    string = glGetString(GL_VERSION);
+    printf("GL_VERSION: %s\n", string);
+
+    return pass != true;
+}