1 files changed, 120 insertions, 0 deletions
diff --git a/clients/wscreensaver-glue.h b/clients/wscreensaver-glue.h
new file mode 100644
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+++ b/clients/wscreensaver-glue.h
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+/*
+ * Copyright © 2011 Collabora, Ltd.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef WSCREENSAVER_GLUE_H
+#define WSCREENSAVER_GLUE_H
+
+/*
+ * This file is glue, that tries to avoid changing glmatrix.c from the
+ * original too much, hopefully easing the porting of other (GL)
+ * xscreensaver "hacks".
+ */
+
+#include "wscreensaver.h"
+
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <time.h>
+#include <math.h>
+#include <assert.h>
+
+#include <GL/gl.h>
+#include <GL/glu.h>
+
+#include "window.h"
+
+#define ENTRYPOINT static
+
+typedef bool Bool;
+#define True true
+#define False false
+
+typedef struct ModeInfo ModeInfo;
+
+#define MI_DISPLAY(mi) NULL
+#define MI_WINDOW(mi) (mi)
+#define MI_SCREEN(mi) ((mi)->instance_number)
+#define MI_WIDTH(mi) ((mi)->width)
+#define MI_HEIGHT(mi) ((mi)->height)
+#define MI_IS_WIREFRAME(mi) 0
+#define MI_NUM_SCREENS(mi) 16
+
+typedef EGLContext GLXContext;
+
+double frand(double f);
+void clear_gl_error(void);
+void check_gl_error(const char *msg);
+
+static inline void
+glXMakeCurrent(void *dummy, ModeInfo *mi, EGLContext ctx)
+{
+	assert(mi->eglctx == ctx);
+}
+
+static inline void
+glXSwapBuffers(void *dummy, ModeInfo *mi)
+{
+	mi->swap_buffers = 1;
+}
+
+static inline void
+do_fps(ModeInfo *mi)
+{
+}
+
+/* just enough XImage to satisfy glmatrix.c */
+
+typedef struct _XImage {
+	int width;
+	int height;
+	char *data;
+	int bytes_per_line;
+} XImage;
+
+XImage *xpm_to_ximage(char **xpm_data);
+void XDestroyImage(XImage *xi);
+
+static inline unsigned long
+XGetPixel(XImage *xi, int x, int y)
+{
+	return *(uint32_t *)(xi->data + xi->bytes_per_line * y + 4 * x);
+}
+
+static inline void
+XPutPixel(XImage *xi, int x, int y, unsigned long pixel)
+{
+	*(uint32_t *)(xi->data + xi->bytes_per_line * y + 4 * x) = pixel;
+}
+
+/*
+ * override glViewport from the plugin, so we can set it up properly
+ * rendering to a regular decorated Wayland window.
+ */
+#ifdef glViewport
+#undef glViewport
+#endif
+#define glViewport(x,y,w,h) do {} while (0)
+
+#endif /* WSCREENSAVER_GLUE_H */