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#include <gtk/gtk.h>
#include <epoxy/gl.h>
static cairo_surface_t *
make_surface (void)
{
cairo_surface_t *surface;
cairo_t *cr;
guchar *data;
data = g_malloc (64 * 64 * 4);
surface = cairo_image_surface_create_for_data (data,
CAIRO_FORMAT_ARGB32,
64, 64, 64 * 4);
cr = cairo_create (surface);
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
return surface;
}
enum {
SAME_CONTEXT,
NO_CONTEXT,
SHARED_CONTEXT
};
static void
test_gltexture (int test)
{
GdkDisplay *display;
GdkGLContext *context;
GdkGLContext *context2 = NULL;
GdkGLTextureBuilder *builder;
GdkTexture *texture;
cairo_surface_t *surface;
GError *error = NULL;
unsigned int id;
guchar *data;
display = gdk_display_get_default ();
if (!gdk_display_prepare_gl (display, &error))
{
g_test_message ("no GL support: %s", error->message);
g_test_skip ("no GL support");
g_clear_error (&error);
return;
}
context = gdk_display_create_gl_context (display, &error);
g_assert_nonnull (context);
g_assert_no_error (error);
gdk_gl_context_realize (context, &error);
g_assert_no_error (error);
surface = make_surface ();
gdk_gl_context_make_current (context);
glGenTextures (1, &id);
glActiveTexture (GL_TEXTURE0);
glBindTexture (GL_TEXTURE_2D, id);
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, 64, 64, 0, GL_BGRA, GL_UNSIGNED_BYTE,
cairo_image_surface_get_data (surface));
g_assert_true (glGetError () == GL_NO_ERROR);
if (test == NO_CONTEXT)
gdk_gl_context_clear_current ();
else if (test == SHARED_CONTEXT)
{
context2 = gdk_display_create_gl_context (display, &error);
g_assert_nonnull (context2);
g_assert_no_error (error);
gdk_gl_context_realize (context2, &error);
g_assert_no_error (error);
gdk_gl_context_make_current (context2);
}
builder = gdk_gl_texture_builder_new ();
gdk_gl_texture_builder_set_id (builder, id);
gdk_gl_texture_builder_set_context (builder, context);
gdk_gl_texture_builder_set_width (builder, 64);
gdk_gl_texture_builder_set_height (builder, 64);
texture = gdk_gl_texture_builder_build (builder, NULL, NULL);
data = g_malloc0 (64 * 64 * 4);
gdk_texture_download (texture, data, 64 * 4);
g_assert_true (memcmp (data, cairo_image_surface_get_data (surface), 64 * 64 * 4) == 0);
g_free (data);
g_object_unref (texture);
g_object_unref (builder);
cairo_surface_destroy (surface);
g_object_unref (context);
g_clear_object (&context2);
}
static void
test_gltexture_same_context (void)
{
test_gltexture (SAME_CONTEXT);
}
static void
test_gltexture_no_context (void)
{
test_gltexture (NO_CONTEXT);
}
static void
test_gltexture_shared_context (void)
{
test_gltexture (SHARED_CONTEXT);
}
int
main (int argc, char *argv[])
{
gtk_test_init (&argc, &argv, NULL);
g_test_add_func ("/gltexture/same-context", test_gltexture_same_context);
g_test_add_func ("/gltexture/no-context", test_gltexture_no_context);
g_test_add_func ("/gltexture/shared-context", test_gltexture_shared_context);
return g_test_run ();
}
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