xm_winsys.c File Reference

Include dependency graph for xm_winsys.c:

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Data Structures
struct	xm_buffer
	Subclass of pipe_buffer for Xlib winsys. More...
struct	xmesa_pipe_winsys
	Subclass of pipe_winsys for Xlib winsys. More...
Defines
#define	TILE_SIZE   32
#define	XSHM_ENABLED(b)   0
	X Shared Memory Image extension code.
Functions
static struct xm_buffer *	xm_buffer (struct pipe_buffer *buf)
	Cast wrapper.
static void	alloc_shm_ximage (struct xm_buffer *b, struct xmesa_buffer *xmb, unsigned width, unsigned height)
static void *	xm_buffer_map (struct pipe_winsys *pws, struct pipe_buffer *buf, unsigned flags)
static void	xm_buffer_unmap (struct pipe_winsys *pws, struct pipe_buffer *buf)
static void	xm_buffer_destroy (struct pipe_winsys *pws, struct pipe_buffer *buf)
static void	twiddle_tile (const uint *tileIn, uint *tileOut)
	For Cell.
static void	xmesa_display_surface_tiled (XMesaBuffer b, const struct pipe_surface *surf)
	Display a surface that's in a tiled configuration.
void	xmesa_display_surface (XMesaBuffer b, const struct pipe_surface *surf)
	Display/copy the image in the surface into the X window specified by the XMesaBuffer.
static void	xm_flush_frontbuffer (struct pipe_winsys *pws, struct pipe_surface *surf, void *context_private)
static const char *	xm_get_name (struct pipe_winsys *pws)
static struct pipe_buffer *	xm_buffer_create (struct pipe_winsys *pws, unsigned alignment, unsigned usage, unsigned size)
static struct pipe_buffer *	xm_user_buffer_create (struct pipe_winsys *pws, void *ptr, unsigned bytes)
	Create buffer which wraps user-space data.
static unsigned	round_up (unsigned n, unsigned multiple)
	Round n up to next multiple.
static int	xm_surface_alloc_storage (struct pipe_winsys *winsys, struct pipe_surface *surf, unsigned width, unsigned height, enum pipe_format format, unsigned flags, unsigned tex_usage)
static struct pipe_surface *	xm_surface_alloc (struct pipe_winsys *ws)
	Called via winsys->surface_alloc() to create new surfaces.
static void	xm_surface_release (struct pipe_winsys *winsys, struct pipe_surface **s)
static void	xm_fence_reference (struct pipe_winsys *sws, struct pipe_fence_handle **ptr, struct pipe_fence_handle *fence)
static int	xm_fence_signalled (struct pipe_winsys *sws, struct pipe_fence_handle *fence, unsigned flag)
static int	xm_fence_finish (struct pipe_winsys *sws, struct pipe_fence_handle *fence, unsigned flag)
struct pipe_winsys *	xmesa_get_pipe_winsys_aub (struct xmesa_visual *xm_vis)
	Return pointer to a pipe_winsys object.
static struct pipe_winsys *	xmesa_get_pipe_winsys (struct xmesa_visual *xm_vis)
struct pipe_context *	xmesa_create_pipe_context (XMesaContext xmesa, uint pixelformat)

---

Define Documentation

#define TILE_SIZE   32

Definition at line 55 of file xm_winsys.c.

#define XSHM_ENABLED

(

b

)

0

X Shared Memory Image extension code.

Definition at line 215 of file xm_winsys.c.

---

Function Documentation

static void alloc_shm_ximage	(	struct xm_buffer *	b,
		struct xmesa_buffer *	xmb,
		unsigned	width,
		unsigned	height
	)			[static]

Definition at line 218 of file xm_winsys.c.

References xm_buffer::shm.

{

static unsigned round_up	(	unsigned	n,
		unsigned	multiple
	)			[static]

Round n up to next multiple.

Definition at line 525 of file xm_winsys.c.

{

static void twiddle_tile	(	const uint *	tileIn,
		uint *	tileOut
	)			[static]

For Cell.

Basically, rearrange the pixels/quads from this layout: +--+--+--+--+ |p0|p1|p2|p3|.... +--+--+--+--+

to this layout: +--+--+ |p0|p1|.... +--+--+ |p2|p3| +--+--+

Definition at line 290 of file xm_winsys.c.

{
   int y, x;

   for (y = 0; y < TILE_SIZE; y+=2) {
      for (x = 0; x < TILE_SIZE; x+=2) {
         int k = 4 * (y/2 * TILE_SIZE/2 + x/2);
         tileOut[y * TILE_SIZE + (x + 0)] = tileIn[k];
         tileOut[y * TILE_SIZE + (x + 1)] = tileIn[k+1];
         tileOut[(y + 1) * TILE_SIZE + (x + 0)] = tileIn[k+2];
         tileOut[(y + 1) * TILE_SIZE + (x + 1)] = tileIn[k+3];
      }

static struct xm_buffer* xm_buffer

(

struct pipe_buffer *

buf

)

[static, read]

Cast wrapper.

Definition at line 99 of file xm_winsys.c.

{
   return (struct xm_buffer *)buf;
}

static struct pipe_buffer* xm_buffer_create	(	struct pipe_winsys *	pws,
		unsigned	alignment,
		unsigned	usage,
		unsigned	size
	)			[static, read]

Definition at line 463 of file xm_winsys.c.

References align_malloc(), pipe_buffer::alignment, xm_buffer::base, CALLOC_STRUCT, xm_buffer::data, max(), PIPE_BUFFER_USAGE_PIXEL, pipe_buffer::refcount, xm_buffer::shm, xmesa_pipe_winsys::shm, pipe_buffer::size, and pipe_buffer::usage.

{
   struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
#if defined(USE_XSHM) && !defined(XFree86Server)
   struct xmesa_pipe_winsys *xpws = (struct xmesa_pipe_winsys *) pws;
#endif

   buffer->base.refcount = 1;
   buffer->base.alignment = alignment;
   buffer->base.usage = usage;
   buffer->base.size = size;


#if defined(USE_XSHM) && !defined(XFree86Server)
   buffer->shminfo.shmid = -1;
   buffer->shminfo.shmaddr = (char *) -1;

   if (xpws->shm && (usage & PIPE_BUFFER_USAGE_PIXEL) != 0) {
      buffer->shm = xpws->shm;

      if (alloc_shm(buffer, size)) {
         buffer->data = buffer->shminfo.shmaddr;
      }
   }
#endif

   if (buffer->data == NULL) {
      buffer->shm = 0;

      /* align to 16-byte multiple for Cell */
      buffer->data = align_malloc(size, max(alignment, 16));
   }

static void xm_buffer_destroy	(	struct pipe_winsys *	pws,
		struct pipe_buffer *	buf
	)			[static]

Definition at line 247 of file xm_winsys.c.

References align_free(), xm_buffer::data, xm_buffer::userBuffer, and xm_buffer().

{
   struct xm_buffer *oldBuf = xm_buffer(buf);

   if (oldBuf->data) {
#if defined(USE_XSHM) && !defined(XFree86Server)
      if (oldBuf->shminfo.shmid >= 0) {
         shmdt(oldBuf->shminfo.shmaddr);
         shmctl(oldBuf->shminfo.shmid, IPC_RMID, 0);
         
         oldBuf->shminfo.shmid = -1;
         oldBuf->shminfo.shmaddr = (char *) -1;
      }
      else
#endif
      {
         if (!oldBuf->userBuffer) {
            align_free(oldBuf->data);
         }
      }

      oldBuf->data = NULL;
   }

static void* xm_buffer_map	(	struct pipe_winsys *	pws,
		struct pipe_buffer *	buf,
		unsigned	flags
	)			[static]

Definition at line 231 of file xm_winsys.c.

References xm_buffer::data, xm_buffer::mapped, and xm_buffer().

{
   struct xm_buffer *xm_buf = xm_buffer(buf);
   xm_buf->mapped = xm_buf->data;

static void xm_buffer_unmap	(	struct pipe_winsys *	pws,
		struct pipe_buffer *	buf
	)			[static]

Definition at line 240 of file xm_winsys.c.

References xm_buffer::mapped, and xm_buffer().

{
   struct xm_buffer *xm_buf = xm_buffer(buf);

static int xm_fence_finish	(	struct pipe_winsys *	sws,
		struct pipe_fence_handle *	fence,
		unsigned	flag
	)			[static]

Definition at line 619 of file xm_winsys.c.

{

static void xm_fence_reference	(	struct pipe_winsys *	sws,
		struct pipe_fence_handle **	ptr,
		struct pipe_fence_handle *	fence
	)			[static]

Definition at line 604 of file xm_winsys.c.

{

static int xm_fence_signalled	(	struct pipe_winsys *	sws,
		struct pipe_fence_handle *	fence,
		unsigned	flag
	)			[static]

Definition at line 611 of file xm_winsys.c.

{

static void xm_flush_frontbuffer	(	struct pipe_winsys *	pws,
		struct pipe_surface *	surf,
		void *	context_private
	)			[static]

Definition at line 441 of file xm_winsys.c.

References xmesa_display_surface().

{
   /*
    * The front color buffer is actually just another XImage buffer.
    * This function copies that XImage to the actual X Window.
    */
   XMesaContext xmctx = (XMesaContext) context_private;

static const char* xm_get_name

(

struct pipe_winsys *

pws

)

[static]

Definition at line 456 of file xm_winsys.c.

{

static struct pipe_surface* xm_surface_alloc

(

struct pipe_winsys *

ws

)

[static, read]

Called via winsys->surface_alloc() to create new surfaces.

Definition at line 569 of file xm_winsys.c.

{
   struct pipe_surface *surface = CALLOC_STRUCT(pipe_surface);

   assert(ws);

   surface->refcount = 1;
   surface->winsys = ws;

static int xm_surface_alloc_storage	(	struct pipe_winsys *	winsys,
		struct pipe_surface *	surf,
		unsigned	width,
		unsigned	height,
		enum pipe_format	format,
		unsigned	flags,
		unsigned	tex_usage
	)			[static]

Definition at line 531 of file xm_winsys.c.

References assert, pipe_surface::block, pipe_surface::buffer, pipe_winsys::buffer_create, pipe_surface::format, pipe_surface::height, pipe_surface::nblocksx, pipe_surface::nblocksy, pf_get_block(), pf_get_nblocksx(), pf_get_nblocksy(), PIPE_BUFFER_USAGE_PIXEL, round_up(), pipe_format_block::size, pipe_surface::stride, pipe_surface::usage, and pipe_surface::width.

{
   const unsigned alignment = 64;

   surf->width = width;
   surf->height = height;
   surf->format = format;
   pf_get_block(format, &surf->block);
   surf->nblocksx = pf_get_nblocksx(&surf->block, width);
   surf->nblocksy = pf_get_nblocksy(&surf->block, height);
   surf->stride = round_up(surf->nblocksx * surf->block.size, alignment);
   surf->usage = flags;

   assert(!surf->buffer);
   surf->buffer = winsys->buffer_create(winsys, alignment,
                                        PIPE_BUFFER_USAGE_PIXEL,
#ifdef GALLIUM_CELL /* XXX a bit of a hack */
                                        surf->stride * round_up(surf->nblocksy, TILE_SIZE));
#else
                                        surf->stride * surf->nblocksy);
#endif

   if(!surf->buffer)
      return -1;
   

static void xm_surface_release	(	struct pipe_winsys *	winsys,
		struct pipe_surface **	s
	)			[static]

Definition at line 584 of file xm_winsys.c.

References assert, pipe_surface::buffer, pipe_surface::refcount, pipe_surface::texture, and winsys_buffer_reference().

{
   struct pipe_surface *surf = *s;
   assert(!surf->texture);
   surf->refcount--;
   if (surf->refcount == 0) {
      if (surf->buffer)
        winsys_buffer_reference(winsys, &surf->buffer, NULL);
      free(surf);
   }

static struct pipe_buffer* xm_user_buffer_create	(	struct pipe_winsys *	pws,
		void *	ptr,
		unsigned	bytes
	)			[static, read]

Create buffer which wraps user-space data.

Definition at line 507 of file xm_winsys.c.

{
   struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
   buffer->base.refcount = 1;
   buffer->base.size = bytes;
   buffer->userBuffer = TRUE;
   buffer->data = ptr;
   buffer->shm = 0;

struct pipe_context* xmesa_create_pipe_context	(	XMesaContext	xmesa,
		uint	pixelformat
	)			[read]

Definition at line 680 of file xm_winsys.c.

References cell_create_context(), cell_create_screen(), cell_get_winsys(), pipe_context::priv, softpipe_create(), softpipe_create_screen(), trace_context_create(), trace_screen_create(), xmesa_get_pipe_winsys(), and xmesa_get_pipe_winsys_aub().

{
   struct pipe_winsys *pws;
   struct pipe_context *pipe;
   
   if (getenv("XM_AUB")) {
      pws = xmesa_get_pipe_winsys_aub(xmesa->xm_visual);
   }
   else {
      pws = xmesa_get_pipe_winsys(xmesa->xm_visual);
   }

#ifdef GALLIUM_CELL
   if (!getenv("GALLIUM_NOCELL")) {
      struct cell_winsys *cws = cell_get_winsys(pixelformat);
      struct pipe_screen *screen = cell_create_screen(pws);

      pipe = cell_create_context(screen, cws);
   }
   else
#endif
   {
      struct pipe_screen *screen = softpipe_create_screen(pws);

      pipe = softpipe_create(screen, pws, NULL);

#ifdef GALLIUM_TRACE
      screen = trace_screen_create(screen);
      
      pipe = trace_context_create(screen, pipe);
#endif
   }

   if (pipe)
      pipe->priv = xmesa;

void xmesa_display_surface	(	XMesaBuffer	b,
		const struct pipe_surface *	surf
	)

Display/copy the image in the surface into the X window specified by the XMesaBuffer.

Definition at line 383 of file xm_winsys.c.

{
   XImage *ximage;
   struct xm_buffer *xm_buf = xm_buffer(surf->buffer);
   static boolean no_swap = 0;
   static boolean firsttime = 1;
   static int tileSize = 0;

   if (firsttime) {
      no_swap = getenv("SP_NO_RAST") != NULL;
#ifdef GALLIUM_CELL
      if (!getenv("GALLIUM_NOCELL")) {
         tileSize = 32; 
      }
#endif
      firsttime = 0;
   }

   if (no_swap)
      return;

   if (tileSize) {
      xmesa_display_surface_tiled(b, surf);
      return;
   }

   if (XSHM_ENABLED(xm_buf) && (xm_buf->tempImage == NULL)) {
      assert(surf->block.width == 1);
      assert(surf->block.height == 1);
      alloc_shm_ximage(xm_buf, b, surf->stride/surf->block.size, surf->height);
   }

   ximage = (XSHM_ENABLED(xm_buf)) ? xm_buf->tempImage : b->tempImage;
   ximage->data = xm_buf->data;

   /* display image in Window */
   if (XSHM_ENABLED(xm_buf)) {
#if defined(USE_XSHM) && !defined(XFree86Server)
      XShmPutImage(b->xm_visual->display, b->drawable, b->gc,
                   ximage, 0, 0, 0, 0, surf->width, surf->height, False);
#endif
   } else {
      /* check that the XImage has been previously initialized */
      assert(ximage->format);
      assert(ximage->bitmap_unit);

      /* update XImage's fields */
      ximage->width = surf->width;
      ximage->height = surf->height;
      ximage->bytes_per_line = surf->stride;

      XPutImage(b->xm_visual->display, b->drawable, b->gc,
                ximage, 0, 0, 0, 0, surf->width, surf->height);

static void xmesa_display_surface_tiled	(	XMesaBuffer	b,
		const struct pipe_surface *	surf
	)			[static]

Display a surface that's in a tiled configuration.

That is, all the pixels for a TILE_SIZExTILE_SIZE block are contiguous in memory.

Definition at line 312 of file xm_winsys.c.

{
   XImage *ximage;
   struct xm_buffer *xm_buf = xm_buffer(surf->buffer);
   const uint tilesPerRow = (surf->width + TILE_SIZE - 1) / TILE_SIZE;
   uint x, y;

   if (XSHM_ENABLED(xm_buf) && (xm_buf->tempImage == NULL)) {
      alloc_shm_ximage(xm_buf, b, TILE_SIZE, TILE_SIZE);
   }

   ximage = (XSHM_ENABLED(xm_buf)) ? xm_buf->tempImage : b->tempImage;

   /* check that the XImage has been previously initialized */
   assert(ximage->format);
   assert(ximage->bitmap_unit);

   if (!XSHM_ENABLED(xm_buf)) {
      /* update XImage's fields */
      ximage->width = TILE_SIZE;
      ximage->height = TILE_SIZE;
      ximage->bytes_per_line = TILE_SIZE * 4;
   }

   for (y = 0; y < surf->height; y += TILE_SIZE) {
      for (x = 0; x < surf->width; x += TILE_SIZE) {
         uint tmpTile[TILE_SIZE * TILE_SIZE];
         int tx = x / TILE_SIZE;
         int ty = y / TILE_SIZE;
         int offset = ty * tilesPerRow + tx;
         int w = TILE_SIZE;
         int h = TILE_SIZE;

         if (y + h > surf->height)
            h = surf->height - y;
         if (x + w > surf->width)
            w = surf->width - x;

         /* offset in pixels */
         offset *= TILE_SIZE * TILE_SIZE;

         if (XSHM_ENABLED(xm_buf)) {
            ximage->data = (char *) xm_buf->data + 4 * offset;
            /* make copy of tile data */
            memcpy(tmpTile, (uint *) ximage->data, sizeof(tmpTile));
            /* twiddle from temp to ximage in shared memory */
            twiddle_tile(tmpTile, (uint *) ximage->data);
            /* display image in shared memory */
#if defined(USE_XSHM) && !defined(XFree86Server)
            XShmPutImage(b->xm_visual->display, b->drawable, b->gc,
                         ximage, 0, 0, x, y, w, h, False);
#endif
         }
         else {
            /* twiddel from ximage buffer to temp tile */
            twiddle_tile((uint *) xm_buf->data + offset, tmpTile);
            /* display temp tile data */
            ximage->data = (char *) tmpTile;
            XPutImage(b->xm_visual->display, b->drawable, b->gc,
                      ximage, 0, 0, x, y, w, h);
         }
      }

static struct pipe_winsys* xmesa_get_pipe_winsys

(

struct xmesa_visual *

xm_vis

)

[static, read]

Definition at line 644 of file xm_winsys.c.

References xmesa_pipe_winsys::base, pipe_winsys::buffer_create, pipe_winsys::buffer_destroy, pipe_winsys::buffer_map, pipe_winsys::buffer_unmap, CALLOC_STRUCT, xmesa_visual::display, pipe_winsys::fence_finish, pipe_winsys::fence_reference, pipe_winsys::fence_signalled, pipe_winsys::flush_frontbuffer, pipe_winsys::get_name, xmesa_pipe_winsys::shm, pipe_winsys::surface_alloc, pipe_winsys::surface_alloc_storage, pipe_winsys::surface_release, pipe_winsys::user_buffer_create, xm_buffer_create(), xm_buffer_destroy(), xm_buffer_map(), xm_buffer_unmap(), xm_fence_finish(), xm_fence_reference(), xm_fence_signalled(), xm_flush_frontbuffer(), xm_get_name(), xm_surface_alloc(), xm_surface_alloc_storage(), xm_surface_release(), xm_user_buffer_create(), xmesa_pipe_winsys::xm_visual, and xmesa_check_for_xshm().

{
   static struct xmesa_pipe_winsys *ws = NULL;

   if (!ws) {
      ws = CALLOC_STRUCT(xmesa_pipe_winsys);

      ws->xm_visual = xm_vis;
      ws->shm = xmesa_check_for_xshm(xm_vis->display);

      /* Fill in this struct with callbacks that pipe will need to
       * communicate with the window system, buffer manager, etc. 
       */
      ws->base.buffer_create = xm_buffer_create;
      ws->base.user_buffer_create = xm_user_buffer_create;
      ws->base.buffer_map = xm_buffer_map;
      ws->base.buffer_unmap = xm_buffer_unmap;
      ws->base.buffer_destroy = xm_buffer_destroy;

      ws->base.surface_alloc = xm_surface_alloc;
      ws->base.surface_alloc_storage = xm_surface_alloc_storage;
      ws->base.surface_release = xm_surface_release;

      ws->base.fence_reference = xm_fence_reference;
      ws->base.fence_signalled = xm_fence_signalled;
      ws->base.fence_finish = xm_fence_finish;

      ws->base.flush_frontbuffer = xm_flush_frontbuffer;
      ws->base.get_name = xm_get_name;
   }

struct pipe_winsys* xmesa_get_pipe_winsys_aub

(

struct xmesa_visual *

xm_vis

)

[read]

Return pointer to a pipe_winsys object.

For Xlib, this is a singleton object. Nothing special for the Xlib driver so no subclassing or anything.

Definition at line 632 of file xm_winsys.c.

{
   static struct xmesa_pipe_winsys *ws = NULL;

   if (!ws) {
      ws = (struct xmesa_pipe_winsys *) xmesa_create_pipe_winsys_aub();
   }

---