sp_texture.c File Reference

Include dependency graph for sp_texture.c:

Go to the source code of this file.

Functions
static unsigned	minify (unsigned d)
static boolean	softpipe_texture_layout (struct pipe_screen *screen, struct softpipe_texture *spt)
static boolean	softpipe_displaytarget_layout (struct pipe_screen *screen, struct softpipe_texture *spt)
static struct pipe_texture *	softpipe_texture_create (struct pipe_screen *screen, const struct pipe_texture *templat)
static struct pipe_texture *	softpipe_texture_blanket (struct pipe_screen *screen, const struct pipe_texture *base, const unsigned *stride, struct pipe_buffer *buffer)
static void	softpipe_texture_release (struct pipe_screen *screen, struct pipe_texture **pt)
static struct pipe_surface *	softpipe_get_tex_surface (struct pipe_screen *screen, struct pipe_texture *pt, unsigned face, unsigned level, unsigned zslice, unsigned usage)
static void	softpipe_tex_surface_release (struct pipe_screen *screen, struct pipe_surface **s)
static void *	softpipe_surface_map (struct pipe_screen *screen, struct pipe_surface *surface, unsigned flags)
static void	softpipe_surface_unmap (struct pipe_screen *screen, struct pipe_surface *surface)
void	softpipe_init_texture_funcs (struct softpipe_context *sp)
void	softpipe_init_screen_texture_funcs (struct pipe_screen *screen)

---

Function Documentation

static unsigned minify

(

unsigned

d

)

[static]

Definition at line 50 of file sp_texture.c.

References MAX2.

{
   return MAX2(1, d>>1);
}

static boolean softpipe_displaytarget_layout	(	struct pipe_screen *	screen,
		struct softpipe_texture *	spt
	)			[static]

Definition at line 101 of file sp_texture.c.

References softpipe_texture::base, pipe_texture::block, softpipe_texture::buffer, pipe_surface::buffer, FALSE, pipe_texture::format, pipe_texture::height, pipe_texture::nblocksx, pipe_texture::nblocksy, pf_get_nblocksx(), pf_get_nblocksy(), PIPE_BUFFER_USAGE_CPU_READ, PIPE_BUFFER_USAGE_CPU_WRITE, PIPE_BUFFER_USAGE_GPU_READ, PIPE_BUFFER_USAGE_GPU_WRITE, pipe_surface::stride, softpipe_texture::stride, pipe_winsys::surface_alloc_storage, pipe_texture::tex_usage, pipe_texture::width, and pipe_screen::winsys.

{
   struct pipe_winsys *ws = screen->winsys;
   struct pipe_surface surf;
   unsigned flags = (PIPE_BUFFER_USAGE_CPU_READ |
                     PIPE_BUFFER_USAGE_CPU_WRITE |
                     PIPE_BUFFER_USAGE_GPU_READ |
                     PIPE_BUFFER_USAGE_GPU_WRITE);
   int ret;


   memset(&surf, 0, sizeof(surf));

   ret =ws->surface_alloc_storage( ws, 
                                   &surf,
                                   spt->base.width[0], 
                                   spt->base.height[0],
                                   spt->base.format,
                                   flags,
                                   spt->base.tex_usage);
   if(ret != 0)
      return FALSE;

   if (!surf.buffer) {
      /* allocation failed */
      return FALSE;
   }

   /* Now extract the goodies: 
    */
   spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width[0]);  
   spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height[0]);  
   spt->stride[0] = surf.stride;

   /* Transfer the reference:
    */
   spt->buffer = surf.buffer;
   surf.buffer = NULL;

   return spt->buffer != NULL;
}

static struct pipe_surface* softpipe_get_tex_surface	(	struct pipe_screen *	screen,
		struct pipe_texture *	pt,
		unsigned	face,
		unsigned	level,
		unsigned	zslice,
		unsigned	usage
	)			[static, read]

Definition at line 229 of file sp_texture.c.

References assert, pipe_texture::block, pipe_surface::block, softpipe_texture::buffer, pipe_surface::buffer, CALLOC_STRUCT, pipe_surface::face, pipe_texture::format, pipe_surface::format, pipe_texture::height, pipe_surface::height, pipe_surface::level, softpipe_texture::level_offset, softpipe_texture::modified, pipe_texture::nblocksx, pipe_surface::nblocksx, pipe_texture::nblocksy, pipe_surface::nblocksy, pipe_surface::offset, pipe_buffer_reference(), PIPE_BUFFER_USAGE_CPU_READ, PIPE_BUFFER_USAGE_CPU_WRITE, PIPE_BUFFER_USAGE_GPU_READ, PIPE_BUFFER_USAGE_GPU_WRITE, PIPE_TEXTURE_3D, PIPE_TEXTURE_CUBE, pipe_texture_reference(), pipe_surface::refcount, softpipe_texture(), softpipe_texture::stride, pipe_surface::stride, pipe_texture::target, pipe_surface::texture, TRUE, pipe_surface::usage, pipe_texture::width, pipe_surface::width, pipe_screen::winsys, and pipe_surface::zslice.

{
   struct pipe_winsys *ws = screen->winsys;
   struct softpipe_texture *spt = softpipe_texture(pt);
   struct pipe_surface *ps;

   assert(level <= pt->last_level);

   ps = CALLOC_STRUCT(pipe_surface);
   ps->refcount = 1;
   if (ps) {
      assert(ps->refcount);
      pipe_texture_reference(&ps->texture, pt);
      pipe_buffer_reference(screen, &ps->buffer, spt->buffer);
      ps->format = pt->format;
      ps->block = pt->block;
      ps->width = pt->width[level];
      ps->height = pt->height[level];
      ps->nblocksx = pt->nblocksx[level];
      ps->nblocksy = pt->nblocksy[level];
      ps->stride = spt->stride[level];
      ps->offset = spt->level_offset[level];
      ps->usage = usage;
      
      /* Because we are softpipe, anything that the state tracker
       * thought was going to be done with the GPU will actually get
       * done with the CPU.  Let's adjust the flags to take that into
       * account.
       */
      if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
         /* GPU_WRITE means "render" and that can involve reads (blending) */
         ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
      }

      if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
         ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;

      if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
                       PIPE_BUFFER_USAGE_GPU_WRITE)) {
         /* Mark the surface as dirty.  The tile cache will look for this. */
         spt->modified = TRUE;
      }

      ps->face = face;
      ps->level = level;
      ps->zslice = zslice;

      if (pt->target == PIPE_TEXTURE_CUBE || pt->target == PIPE_TEXTURE_3D) {
         ps->offset += ((pt->target == PIPE_TEXTURE_CUBE) ? face : zslice) *
            ps->nblocksy *
            ps->stride;
      }
      else {
         assert(face == 0);
         assert(zslice == 0);
      }
   }
   return ps;
}

void softpipe_init_screen_texture_funcs

(

struct pipe_screen *

screen

)

Definition at line 359 of file sp_texture.c.

References pipe_screen::get_tex_surface, softpipe_get_tex_surface(), softpipe_surface_map(), softpipe_surface_unmap(), softpipe_tex_surface_release(), softpipe_texture_blanket(), softpipe_texture_create(), softpipe_texture_release(), pipe_screen::surface_map, pipe_screen::surface_unmap, pipe_screen::tex_surface_release, pipe_screen::texture_blanket, pipe_screen::texture_create, and pipe_screen::texture_release.

{
   screen->texture_create = softpipe_texture_create;
   screen->texture_blanket = softpipe_texture_blanket;
   screen->texture_release = softpipe_texture_release;

   screen->get_tex_surface = softpipe_get_tex_surface;
   screen->tex_surface_release = softpipe_tex_surface_release;

   screen->surface_map = softpipe_surface_map;
   screen->surface_unmap = softpipe_surface_unmap;
}

void softpipe_init_texture_funcs

(

struct softpipe_context *

sp

)

Definition at line 353 of file sp_texture.c.

{
}

static void* softpipe_surface_map	(	struct pipe_screen *	screen,
		struct pipe_surface *	surface,
		unsigned	flags
	)			[static]

Definition at line 313 of file sp_texture.c.

References assert, pipe_surface::buffer, pipe_surface::offset, pipe_buffer_map(), PIPE_BUFFER_USAGE_CPU_WRITE, softpipe_screen(), pipe_surface::texture, softpipe_screen::timestamp, and pipe_surface::usage.

{
   ubyte *map;

   if (flags & ~surface->usage) {
      assert(0);
      return NULL;
   }

   map = pipe_buffer_map( screen, surface->buffer, flags );
   if (map == NULL)
      return NULL;

   /* May want to different things here depending on read/write nature
    * of the map:
    */
   if (surface->texture &&
       (flags & PIPE_BUFFER_USAGE_CPU_WRITE)) 
   {
      /* Do something to notify sharing contexts of a texture change.
       * In softpipe, that would mean flushing the texture cache.
       */
      softpipe_screen(screen)->timestamp++;
   }
   
   return map + surface->offset;
}

static void softpipe_surface_unmap	(	struct pipe_screen *	screen,
		struct pipe_surface *	surface
	)			[static]

Definition at line 345 of file sp_texture.c.

References pipe_surface::buffer, and pipe_buffer_unmap().

{
   pipe_buffer_unmap( screen, surface->buffer );
}

static void softpipe_tex_surface_release	(	struct pipe_screen *	screen,
		struct pipe_surface **	s
	)			[static]

Definition at line 294 of file sp_texture.c.

References assert, pipe_surface::buffer, FREE, pipe_buffer_reference(), pipe_texture_reference(), pipe_surface::refcount, and pipe_surface::texture.

{
   struct pipe_surface *surf = *s;
   /* Effectively do the texture_update work here - if texture images
    * needed post-processing to put them into hardware layout, this is
    * where it would happen.  For softpipe, nothing to do.
    */
   assert ((*s)->texture);
   if (--surf->refcount == 0) {
      pipe_texture_reference(&surf->texture, NULL); 
      pipe_buffer_reference(screen, &surf->buffer, NULL);
      FREE(surf);
   }
   *s = NULL;
}

static struct pipe_texture* softpipe_texture_blanket	(	struct pipe_screen *	screen,
		const struct pipe_texture *	base,
		const unsigned *	stride,
		struct pipe_buffer *	buffer
	)			[static, read]

Definition at line 179 of file sp_texture.c.

References assert, softpipe_texture::base, pipe_texture::block, softpipe_texture::buffer, CALLOC_STRUCT, pipe_texture::depth, pipe_texture::height, pipe_texture::last_level, pipe_texture::nblocksx, pipe_texture::nblocksy, pf_get_nblocksx(), pf_get_nblocksy(), pipe_buffer_reference(), PIPE_TEXTURE_2D, pipe_texture::refcount, pipe_texture::screen, softpipe_texture::stride, pipe_texture::target, and pipe_texture::width.

{
   struct softpipe_texture *spt;
   assert(screen);

   /* Only supports one type */
   if (base->target != PIPE_TEXTURE_2D ||
       base->last_level != 0 ||
       base->depth[0] != 1) {
      return NULL;
   }

   spt = CALLOC_STRUCT(softpipe_texture);
   if (!spt)
      return NULL;

   spt->base = *base;
   spt->base.refcount = 1;
   spt->base.screen = screen;
   spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width[0]);  
   spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height[0]);  
   spt->stride[0] = stride[0];

   pipe_buffer_reference(screen, &spt->buffer, buffer);

   return &spt->base;
}

static struct pipe_texture* softpipe_texture_create	(	struct pipe_screen *	screen,
		const struct pipe_texture *	templat
	)			[static, read]

Definition at line 149 of file sp_texture.c.

References assert, softpipe_texture::base, CALLOC_STRUCT, FREE, PIPE_TEXTURE_USAGE_DISPLAY_TARGET, pipe_texture::refcount, pipe_texture::screen, softpipe_displaytarget_layout(), softpipe_texture_layout(), and pipe_texture::tex_usage.

{
   struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
   if (!spt)
      return NULL;

   spt->base = *templat;
   spt->base.refcount = 1;
   spt->base.screen = screen;

   if (spt->base.tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
      if (!softpipe_displaytarget_layout(screen, spt))
         goto fail;
   }
   else {
      if (!softpipe_texture_layout(screen, spt))
         goto fail;
   }
    
   assert(spt->base.refcount == 1);
   return &spt->base;

 fail:
   FREE(spt);
   return NULL;
}

static boolean softpipe_texture_layout	(	struct pipe_screen *	screen,
		struct softpipe_texture *	spt
	)			[static]

Definition at line 59 of file sp_texture.c.

References softpipe_texture::base, pipe_texture::block, softpipe_texture::buffer, pipe_winsys::buffer_create, pipe_texture::depth, pipe_texture::height, pipe_texture::last_level, softpipe_texture::level_offset, minify(), pipe_texture::nblocksx, pipe_texture::nblocksy, pf_get_nblocksx(), pf_get_nblocksy(), PIPE_BUFFER_USAGE_PIXEL, PIPE_TEXTURE_CUBE, pipe_format_block::size, softpipe_texture::stride, pipe_texture::target, pipe_texture::width, and pipe_screen::winsys.

{
   struct pipe_winsys *ws = screen->winsys;
   struct pipe_texture *pt = &spt->base;
   unsigned level;
   unsigned width = pt->width[0];
   unsigned height = pt->height[0];
   unsigned depth = pt->depth[0];

   unsigned buffer_size = 0;

   for (level = 0; level <= pt->last_level; level++) {
      pt->width[level] = width;
      pt->height[level] = height;
      pt->depth[level] = depth;
      pt->nblocksx[level] = pf_get_nblocksx(&pt->block, width);  
      pt->nblocksy[level] = pf_get_nblocksy(&pt->block, height);  
      spt->stride[level] = pt->nblocksx[level]*pt->block.size;

      spt->level_offset[level] = buffer_size;

      buffer_size += (pt->nblocksy[level] *
                      ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
                      spt->stride[level]);

      width  = minify(width);
      height = minify(height);
      depth = minify(depth);
   }

   spt->buffer = ws->buffer_create(ws, 32,
                                   PIPE_BUFFER_USAGE_PIXEL,
                                   buffer_size);

   return spt->buffer != NULL;
}

static void softpipe_texture_release	(	struct pipe_screen *	screen,
		struct pipe_texture **	pt
	)			[static]

Definition at line 212 of file sp_texture.c.

References softpipe_texture::buffer, FREE, pipe_buffer_reference(), and softpipe_texture().

{
   if (!*pt)
      return;

   if (--(*pt)->refcount <= 0) {
      struct softpipe_texture *spt = softpipe_texture(*pt);

      pipe_buffer_reference(screen, &spt->buffer, NULL);
      FREE(spt);
   }
   *pt = NULL;
}

---