1 files changed, 336 insertions, 0 deletions
diff --git a/src/gallium/winsys/g3dvl/xsp_winsys.c b/src/gallium/winsys/g3dvl/xsp_winsys.c
new file mode 100644
index 00000000000..68be2c2ea3a
--- /dev/null
+++ b/src/gallium/winsys/g3dvl/xsp_winsys.c
@@ -0,0 +1,336 @@
+#include "vl_winsys.h"
+#include <X11/Xutil.h>
+#include <pipe/p_winsys.h>
+#include <pipe/p_state.h>
+#include <pipe/p_inlines.h>
+#include <util/u_memory.h>
+#include <softpipe/sp_winsys.h>
+
+/* pipe_winsys implementation */
+
+struct xsp_pipe_winsys
+{
+	struct pipe_winsys	base;
+	XImage			fbimage;
+};
+
+struct xsp_context
+{
+	Display			*display;
+	int			screen;
+	Drawable		drawable;
+	int			drawable_bound;
+};
+
+struct xsp_buffer
+{
+	struct pipe_buffer	base;
+	boolean			is_user_buffer;
+	void			*data;
+	void			*mapped_data;
+};
+
+static struct pipe_buffer* xsp_buffer_create(struct pipe_winsys *pws, unsigned alignment, unsigned usage, unsigned size)
+{
+	struct xsp_buffer *buffer;
+
+	assert(pws);
+
+	buffer = calloc(1, sizeof(struct xsp_buffer));
+	buffer->base.refcount = 1;
+	buffer->base.alignment = alignment;
+	buffer->base.usage = usage;
+	buffer->base.size = size;
+	buffer->data = align_malloc(size, alignment);
+
+	return (struct pipe_buffer*)buffer;
+}
+
+static struct pipe_buffer* xsp_user_buffer_create(struct pipe_winsys *pws, void *data, unsigned size)
+{
+	struct xsp_buffer *buffer;
+
+	assert(pws);
+
+	buffer = calloc(1, sizeof(struct xsp_buffer));
+	buffer->base.refcount = 1;
+	buffer->base.size = size;
+	buffer->is_user_buffer = TRUE;
+	buffer->data = data;
+
+	return (struct pipe_buffer*)buffer;
+}
+
+static void* xsp_buffer_map(struct pipe_winsys *pws, struct pipe_buffer *buffer, unsigned flags)
+{
+	struct xsp_buffer *xsp_buf = (struct xsp_buffer*)buffer;
+
+	assert(pws);
+	assert(buffer);
+
+	xsp_buf->mapped_data = xsp_buf->data;
+
+	return xsp_buf->mapped_data;
+}
+
+static void xsp_buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer *buffer)
+{
+	struct xsp_buffer *xsp_buf = (struct xsp_buffer*)buffer;
+
+	assert(pws);
+	assert(buffer);
+
+	xsp_buf->mapped_data = NULL;
+}
+
+static void xsp_buffer_destroy(struct pipe_winsys *pws, struct pipe_buffer *buffer)
+{
+	struct xsp_buffer *xsp_buf = (struct xsp_buffer*)buffer;
+
+	assert(pws);
+	assert(buffer);
+
+	if (!xsp_buf->is_user_buffer)
+		align_free(xsp_buf->data);
+
+	free(xsp_buf);
+}
+
+static struct pipe_surface* xsp_surface_alloc(struct pipe_winsys *pws)
+{
+	struct pipe_surface *surface;
+
+	assert(pws);
+
+	surface = calloc(1, sizeof(struct pipe_surface));
+	surface->refcount = 1;
+	surface->winsys = pws;
+
+	return surface;
+}
+
+/* Borrowed from Mesa's xm_winsys */
+static unsigned int round_up(unsigned n, unsigned multiple)
+{
+   return (n + multiple - 1) & ~(multiple - 1);
+}
+
+static int xsp_surface_alloc_storage
+(
+	struct pipe_winsys *pws,
+	struct pipe_surface *surface,
+	unsigned width,
+	unsigned height,
+	enum pipe_format format,
+	unsigned flags,
+	unsigned tex_usage
+)
+{
+	const unsigned int ALIGNMENT = 1;
+
+	assert(pws);
+	assert(surface);
+
+	surface->width = width;
+	surface->height = height;
+	surface->format = format;
+	pf_get_block(format, &surface->block);
+	surface->nblocksx = pf_get_nblocksx(&surface->block, width);
+	surface->nblocksy = pf_get_nblocksy(&surface->block, height);
+	surface->stride = round_up(surface->nblocksx * surface->block.size, ALIGNMENT);
+	surface->usage = flags;
+	surface->buffer = pws->buffer_create(pws, ALIGNMENT, PIPE_BUFFER_USAGE_PIXEL, surface->stride * surface->nblocksy);
+
+	return 0;
+}
+
+static void xsp_surface_release(struct pipe_winsys *pws, struct pipe_surface **surface)
+{
+	struct pipe_surface *s;
+
+	assert(pws);
+	assert(surface);
+	assert(*surface);
+
+	s = *surface;
+
+	s->refcount--;
+
+	if (s->refcount == 0)
+	{
+		winsys_buffer_reference(pws, &s->buffer, NULL);
+		free(s);
+	}
+
+	*surface = NULL;
+}
+
+static void xsp_fence_reference(struct pipe_winsys *pws, struct pipe_fence_handle **ptr, struct pipe_fence_handle *fence)
+{
+	assert(pws);
+	assert(ptr);
+	assert(fence);
+}
+
+static int xsp_fence_signalled(struct pipe_winsys *pws, struct pipe_fence_handle *fence, unsigned flag)
+{
+	assert(pws);
+	assert(fence);
+
+	return 0;
+}
+
+static int xsp_fence_finish(struct pipe_winsys *pws, struct pipe_fence_handle *fence, unsigned flag)
+{
+	assert(pws);
+	assert(fence);
+
+	return 0;
+}
+
+static void xsp_flush_frontbuffer(struct pipe_winsys *pws, struct pipe_surface *surface, void *context_private)
+{
+	struct xsp_pipe_winsys	*xsp_winsys;
+	struct xsp_context	*xsp_context;
+
+	assert(pws);
+	assert(surface);
+	assert(context_private);
+
+	xsp_winsys = (struct xsp_pipe_winsys*)pws;
+	xsp_context = (struct xsp_context*)context_private;
+
+	if (!xsp_context->drawable_bound)
+		return;
+
+	xsp_winsys->fbimage.width = surface->width;
+	xsp_winsys->fbimage.height = surface->height;
+	xsp_winsys->fbimage.bytes_per_line = surface->width * (xsp_winsys->fbimage.bits_per_pixel >> 3);
+	xsp_winsys->fbimage.data = pipe_surface_map(surface, 0);
+
+	XPutImage
+	(
+		xsp_context->display,
+		xsp_context->drawable,
+		XDefaultGC(xsp_context->display, xsp_context->screen),
+		&xsp_winsys->fbimage,
+		0,
+		0,
+		0,
+		0,
+		surface->width,
+		surface->height
+	);
+	XFlush(xsp_context->display);
+	pipe_surface_unmap(surface);
+}
+
+static const char* xsp_get_name(struct pipe_winsys *pws)
+{
+	assert(pws);
+	return "X11 SoftPipe";
+}
+
+/* Show starts here */
+
+int bind_pipe_drawable(struct pipe_context *pipe, Drawable drawable)
+{
+	struct xsp_context *xsp_context;
+
+	assert(pipe);
+
+	xsp_context = pipe->priv;
+	xsp_context->drawable = drawable;
+	xsp_context->drawable_bound = 1;
+
+	return 0;
+}
+
+int unbind_pipe_drawable(struct pipe_context *pipe)
+{
+	struct xsp_context *xsp_context;
+
+	assert(pipe);
+
+	xsp_context = pipe->priv;
+	xsp_context->drawable_bound = 0;
+
+	return 0;
+}
+
+struct pipe_context* create_pipe_context(Display *display, int screen)
+{
+	struct xsp_pipe_winsys	*xsp_winsys;
+	struct xsp_context	*xsp_context;
+	struct pipe_screen	*sp_screen;
+	struct pipe_context	*sp_pipe;
+
+	assert(display);
+
+	xsp_winsys = calloc(1, sizeof(struct xsp_pipe_winsys));
+	xsp_winsys->base.buffer_create = xsp_buffer_create;
+	xsp_winsys->base.user_buffer_create = xsp_user_buffer_create;
+	xsp_winsys->base.buffer_map = xsp_buffer_map;
+	xsp_winsys->base.buffer_unmap = xsp_buffer_unmap;
+	xsp_winsys->base.buffer_destroy = xsp_buffer_destroy;
+	xsp_winsys->base.surface_alloc = xsp_surface_alloc;
+	xsp_winsys->base.surface_alloc_storage = xsp_surface_alloc_storage;
+	xsp_winsys->base.surface_release = xsp_surface_release;
+	xsp_winsys->base.fence_reference = xsp_fence_reference;
+	xsp_winsys->base.fence_signalled = xsp_fence_signalled;
+	xsp_winsys->base.fence_finish = xsp_fence_finish;
+	xsp_winsys->base.flush_frontbuffer = xsp_flush_frontbuffer;
+	xsp_winsys->base.get_name = xsp_get_name;
+
+	{
+		/* XXX: Can't use the returned XImage* directly,
+		since we don't have control over winsys destruction
+		and we wouldn't be able to free it */
+		XImage *template = XCreateImage
+		(
+			display,
+			XDefaultVisual(display, XDefaultScreen(display)),
+			XDefaultDepth(display, XDefaultScreen(display)),
+			ZPixmap,
+			0,
+			NULL,
+			0,	/* Don't know the width and height until flush_frontbuffer */
+			0,
+			32,
+			0
+		);
+
+		memcpy(&xsp_winsys->fbimage, template, sizeof(XImage));
+		XInitImage(&xsp_winsys->fbimage);
+
+		XDestroyImage(template);
+	}
+
+	sp_screen = softpipe_create_screen((struct pipe_winsys*)xsp_winsys);
+	sp_pipe = softpipe_create(sp_screen, (struct pipe_winsys*)xsp_winsys, NULL);
+
+	xsp_context = calloc(1, sizeof(struct xsp_context));
+	xsp_context->display = display;
+	xsp_context->screen = screen;
+
+	sp_pipe->priv = xsp_context;
+
+	return sp_pipe;
+}
+
+int destroy_pipe_context(struct pipe_context *pipe)
+{
+	struct pipe_screen *screen;
+	struct pipe_winsys *winsys;
+
+	assert(pipe);
+
+	screen = pipe->screen;
+	winsys = pipe->winsys;
+	free(pipe->priv);
+	pipe->destroy(pipe);
+	screen->destroy(screen);
+	free(winsys);
+
+	return 0;
+}