g3dvl: Add Nouveau winsys, libdriclient.

Nouveau winsys is based on Mesa's Nouveau winsys and soft-links to most of
it. The 'nouveau_context' and 'nouveau_screen' code contains most of the
changes, 'nouveau_winsys_pipe', 'nouveau_swapbuffers' and 'nouveau_lock'
contain some minor changes. The driclient library contains the DRI
userland stuff, most of which was based on Mesa's DRI code.

1 files changed, 98 insertions, 0 deletions

diff --git a/src/driclient/include/driclient.h b/src/driclient/include/driclient.h
new file mode 100644
index 00000000000..36438a9f790
--- /dev/null
+++ b/src/driclient/include/driclient.h
@@ -0,0 +1,98 @@
+#ifndef driclient_h
+#define driclient_h
+
+#include <stdint.h>
+#include <X11/Xlib.h>
+#include <drm_sarea.h>
+#include "xf86dri.h"
+
+/* TODO: Bring in DRI XML options */
+
+typedef struct dri_version
+{
+	int major;
+	int minor;
+	int patch;
+} dri_version_t;
+
+typedef struct dri_screen
+{
+	Display			*display;
+	unsigned int		num;
+	dri_version_t		ddx, dri, drm;
+	int			draw_lock_id;
+	int			fd;
+	drm_sarea_t		*sarea;
+	void			*drawable_hash;
+	void			*private;
+} dri_screen_t;
+
+struct dri_context;
+
+typedef struct dri_drawable
+{
+	drm_drawable_t		drm_drawable;
+	Drawable		x_drawable;
+	unsigned int		sarea_index;
+	unsigned int		*sarea_stamp;
+	unsigned int		last_sarea_stamp;
+	int			x, y, w, h;
+	int			back_x, back_y;
+	int			num_cliprects, num_back_cliprects;
+	drm_clip_rect_t		*cliprects, *back_cliprects;
+	dri_screen_t		*dri_screen;
+	unsigned int		refcount;
+	void			*private;
+} dri_drawable_t;
+
+typedef struct dri_context
+{
+	XID			id;
+	drm_context_t		drm_context;
+	dri_screen_t		*dri_screen;
+	void			*private;
+} dri_context_t;
+
+typedef struct dri_framebuffer
+{
+	drm_handle_t		drm_handle;
+	int			base, size, stride;
+	int			private_size;
+	void			*private;
+} dri_framebuffer_t;
+
+int driCreateScreen(Display *display, int screen, dri_screen_t **dri_screen, dri_framebuffer_t *dri_framebuf);
+int driDestroyScreen(dri_screen_t *dri_screen);
+int driCreateDrawable(dri_screen_t *dri_screen, Drawable drawable, dri_drawable_t **dri_drawable);
+int driUpdateDrawableInfo(dri_drawable_t *dri_drawable);
+int driDestroyDrawable(dri_drawable_t *dri_drawable);
+int driCreateContext(dri_screen_t *dri_screen, Visual *visual, dri_context_t **dri_context);
+int driDestroyContext(dri_context_t *dri_context);
+int driCompareVersions(const dri_version_t *v1, const dri_version_t *v2);
+
+#define DRI_VALIDATE_DRAWABLE_INFO_ONCE(dri_drawable)					\
+do											\
+{											\
+	if (*(dri_drawable->sarea_stamp) != dri_drawable->last_sarea_stamp)		\
+		driUpdateDrawableInfo(dri_drawable);					\
+} while (0)
+
+#define DRI_VALIDATE_DRAWABLE_INFO(dri_screen, dri_drawable)					\
+do												\
+{												\
+	while (*(dri_drawable->sarea_stamp) != dri_drawable->last_sarea_stamp)			\
+	{											\
+		register unsigned int hwContext = dri_screen->sarea->lock.lock &		\
+		~(DRM_LOCK_HELD | DRM_LOCK_CONT);						\
+		DRM_UNLOCK(dri_screen->fd, &dri_screen->sarea->lock, hwContext);		\
+												\
+		DRM_SPINLOCK(&dri_screen->sarea->drawable_lock, dri_screen->draw_lock_id);	\
+		DRI_VALIDATE_DRAWABLE_INFO_ONCE(dri_drawable);					\
+		DRM_SPINUNLOCK(&dri_screen->sarea->drawable_lock, dri_screen->draw_lock_id);	\
+												\
+		DRM_LIGHT_LOCK(dri_screen->fd, &dri_screen->sarea->lock, hwContext);		\
+	}											\
+} while (0)
+
+#endif
+