sct.c File Reference

Include dependency graph for sct.c:

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Data Structures
struct	texture_list
struct	sct_context
struct	sct_surface
Defines
#define	MAX_SURFACES   ((PIPE_MAX_COLOR_BUFS) + 1)
Functions
static struct sct_surface *	find_surface_info (struct surface_context_tracker *sct, const struct pipe_surface *surface)
	Find the surface_info for the given pipe_surface.
static struct sct_surface *	find_create_surface_info (struct surface_context_tracker *sct, const struct pipe_surface *surface)
	As above, but create new surface_info if surface is new.
static struct sct_context *	find_context_info (struct surface_context_tracker *sct, const struct pipe_context *context)
	Find a context_info for the given context.
static struct sct_context *	find_create_context_info (struct surface_context_tracker *sct, const struct pipe_context *context)
	As above, but create new context_info if context is new.
static boolean	find_surface_context (const struct sct_surface *si, const struct pipe_context *context)
	Is the context already bound to the surface?
static void	add_context_to_surface (struct sct_surface *si, const struct pipe_context *context)
	Add a context to the list of contexts associated with a surface.
static void	remove_context_from_surface (struct sct_surface *si, const struct pipe_context *context)
	Remove a context from the list of contexts associated with a surface.
static void	unbind_context_surface (struct surface_context_tracker *sct, struct pipe_context *context, struct pipe_surface *surface)
	Unbind context from surface.
void	sct_bind_surfaces (struct surface_context_tracker *sct, struct pipe_context *context, uint num_surf, struct pipe_surface **surfaces)
	Bind context to a set of surfaces (color + Z).
struct sct_context_list *	sct_get_surface_contexts (struct surface_context_tracker *sct, const struct pipe_surface *surface)
	Return list of contexts bound to a surface.
static boolean	find_texture (const struct sct_context *ci, const struct pipe_texture *texture)
static void	add_texture_used (struct sct_context *ci, struct pipe_texture *texture)
	Add the given texture to the context's list of used textures.
void	sct_bind_texture (struct surface_context_tracker *sct, struct pipe_context *context, uint unit, struct pipe_texture *tex)
	Bind a texture to a rendering context.
boolean	sct_is_texture_used (struct surface_context_tracker *sct, const struct pipe_context *context, const struct pipe_texture *texture)
	Check if the given texture has been used by the rendering context since the last call to sct_flush_textures().
void	sct_update_texture (struct pipe_texture *tex)
	To be called when the image contents of a texture are changed, such as for gl[Copy]TexSubImage().
void	sct_flush_textures (struct surface_context_tracker *sct, struct pipe_context *context)
	When a scene is flushed/rendered we can release the list of used textures.
void	sct_destroy_context (struct surface_context_tracker *sct, struct pipe_context *context)
void	sct_destroy_surface (struct surface_context_tracker *sct, struct pipe_surface *surface)

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Define Documentation

#define MAX_SURFACES   ((PIPE_MAX_COLOR_BUFS) + 1)

Definition at line 43 of file sct.c.

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Function Documentation

static void add_context_to_surface	(	struct sct_surface *	si,
		const struct pipe_context *	context
	)			[static]

Add a context to the list of contexts associated with a surface.

Definition at line 178 of file sct.c.

References CALLOC_STRUCT, sct_context_list::context, sct_surface::contexts, and sct_context_list::next.

{
   struct sct_context_list *cl = CALLOC_STRUCT(sct_context_list);
   if (cl) {
      cl->context = context;
      /* insert at head of list of contexts */
      cl->next = si->contexts;
      si->contexts = cl;
   }
}

static void add_texture_used	(	struct sct_context *	ci,
		struct pipe_texture *	texture
	)			[static]

Add the given texture to the context's list of used textures.

Definition at line 299 of file sct.c.

References CALLOC_STRUCT, find_texture(), texture_list::next, pipe_texture_reference(), texture_list::texture, and sct_context::textures_used.

{
   if (!find_texture(ci, texture)) {
      /* add to list */
      struct texture_list *tl = CALLOC_STRUCT(texture_list);
      if (tl) {
         pipe_texture_reference(&tl->texture, texture);
         /* insert at head */
         tl->next = ci->textures_used;
         ci->textures_used = tl;
      }
   }
}

static struct sct_context* find_context_info	(	struct surface_context_tracker *	sct,
		const struct pipe_context *	context
	)			[static, read]

Find a context_info for the given context.

Definition at line 121 of file sct.c.

References sct_context::context, surface_context_tracker::contexts, and sct_context::next.

{
   struct sct_context *ci;
   for (ci = sct->contexts; ci; ci = ci->next)
      if (ci->context == context)
         return ci;
   return NULL;
}

static struct sct_context* find_create_context_info	(	struct surface_context_tracker *	sct,
		const struct pipe_context *	context
	)			[static, read]

As above, but create new context_info if context is new.

Definition at line 136 of file sct.c.

References CALLOC_STRUCT, sct_context::context, surface_context_tracker::contexts, find_context_info(), and sct_context::next.

{
   struct sct_context *ci = find_context_info(sct, context);
   if (ci)
      return ci;

   /* alloc new */
   ci = CALLOC_STRUCT(sct_context);
   if (ci) {
      ci->context = context;

      /* insert at head */
      ci->next = sct->contexts;
      sct->contexts = ci;
   }

   return ci;
}

static struct sct_surface* find_create_surface_info	(	struct surface_context_tracker *	sct,
		const struct pipe_surface *	surface
	)			[static, read]

As above, but create new surface_info if surface is new.

Definition at line 96 of file sct.c.

References CALLOC_STRUCT, find_surface_info(), sct_surface::next, sct_surface::surface, and surface_context_tracker::surfaces.

{
   struct sct_surface *si = find_surface_info(sct, surface);
   if (si)
      return si;

   /* alloc new */
   si = CALLOC_STRUCT(sct_surface);
   if (si) {
      si->surface = surface;

      /* insert at head */
      si->next = sct->surfaces;
      sct->surfaces = si;
   }

   return si;
}

static boolean find_surface_context	(	const struct sct_surface *	si,
		const struct pipe_context *	context
	)			[static]

Is the context already bound to the surface?

Definition at line 161 of file sct.c.

References sct_context_list::context, sct_surface::contexts, FALSE, sct_context_list::next, and TRUE.

{
   const struct sct_context_list *cl;
   for (cl = si->contexts; cl; cl = cl->next) {
      if (cl->context == context) {
         return TRUE;
      }
   }
   return FALSE;
}

static struct sct_surface* find_surface_info	(	struct surface_context_tracker *	sct,
		const struct pipe_surface *	surface
	)			[static, read]

Find the surface_info for the given pipe_surface.

Definition at line 81 of file sct.c.

References sct_surface::next, sct_surface::surface, and surface_context_tracker::surfaces.

{
   struct sct_surface *si;
   for (si = sct->surfaces; si; si = si->next)
      if (si->surface == surface)
         return si;
   return NULL;
}

static boolean find_texture	(	const struct sct_context *	ci,
		const struct pipe_texture *	texture
	)			[static]

Definition at line 281 of file sct.c.

References FALSE, texture_list::next, texture_list::texture, sct_context::textures_used, and TRUE.

{
   const struct texture_list *tl;

   for (tl = ci->textures_used; tl; tl = tl->next) {
      if (tl->texture == texture) {
         return TRUE;
      }
   }
   return FALSE;
}

static void remove_context_from_surface	(	struct sct_surface *	si,
		const struct pipe_context *	context
	)			[static]

Remove a context from the list of contexts associated with a surface.

Definition at line 195 of file sct.c.

References sct_surface::contexts, FREE, and sct_context_list::next.

{
   struct sct_context_list *prev = NULL, *curr, *next;

   for (curr = si->contexts; curr; curr = next) {
      if (curr->context == context) {
         /* remove */
         if (prev)
            prev->next = curr->next;
         else
            si->contexts = curr->next;
         next = curr->next;
         FREE(curr);
      }
      else {
         prev = curr;
         next = curr->next;
      }
   }
}

void sct_bind_surfaces	(	struct surface_context_tracker *	sct,
		struct pipe_context *	context,
		uint	num_surf,
		struct pipe_surface **	surfaces
	)

Bind context to a set of surfaces (color + Z).

Like MakeCurrent().

Definition at line 238 of file sct.c.

References add_context_to_surface(), find_create_context_info(), find_create_surface_info(), find_surface_context(), MAX_SURFACES, sct_context::surfaces, and unbind_context_surface().

{
   struct sct_context *ci = find_create_context_info(sct, context);
   uint i;

   if (!ci) {
      return; /* out of memory */
   }

   /* unbind currently bound surfaces */
   for (i = 0; i < MAX_SURFACES; i++) {
      if (ci->surfaces[i]) {
         unbind_context_surface(sct, context, ci->surfaces[i]);
      }
   }

   /* bind new surfaces */
   for (i = 0; i < num_surf; i++) {
      struct sct_surface *si = find_create_surface_info(sct, surfaces[i]);
      if (!find_surface_context(si, context)) {
         add_context_to_surface(si, context);
      }
   }
}

void sct_bind_texture	(	struct surface_context_tracker *	sct,
		struct pipe_context *	context,
		uint	unit,
		struct pipe_texture *	tex
	)

Bind a texture to a rendering context.

Definition at line 319 of file sct.c.

References add_texture_used(), find_context_info(), pipe_texture_reference(), and sct_context::textures.

{
   struct sct_context *ci = find_context_info(sct, context);

   if (ci->textures[unit] != tex) {
      /* put texture on the 'used' list */
      add_texture_used(ci, tex);
      /* bind new */
      pipe_texture_reference(&ci->textures[unit], tex);
   }
}

void sct_destroy_context	(	struct surface_context_tracker *	sct,
		struct pipe_context *	context
	)

Definition at line 389 of file sct.c.

References sct_context::context, surface_context_tracker::contexts, FREE, sct_context::next, sct_surface::next, remove_context_from_surface(), and surface_context_tracker::surfaces.

{
   /* XXX should we require an unbinding first? */
   {
      struct sct_surface *si;
      for (si = sct->surfaces; si; si = si->next) {
         remove_context_from_surface(si, context);
      }
   }

   /* remove context from context_info list */
   {
      struct sct_context *ci, *next, *prev = NULL;
      for (ci = sct->contexts; ci; ci = next) {
         next = ci->next;
         if (ci->context == context) {
            if (prev)
               prev->next = ci->next;
            else
               sct->contexts = ci->next;
            FREE(ci);
         }
         else {
            prev = ci;
         }
      }
   }

}

void sct_destroy_surface	(	struct surface_context_tracker *	sct,
		struct pipe_surface *	surface
	)

Definition at line 422 of file sct.c.

References assert, surface_context_tracker::contexts, FREE, MAX_SURFACES, sct_surface::next, sct_context::next, sct_surface::surface, surface_context_tracker::surfaces, and sct_context::surfaces.

{
   if (1) {
      /* debug/sanity: no context should be bound to surface */
      struct sct_context *ci;
      uint i;
      for (ci = sct->contexts; ci; ci = ci->next) {
         for (i = 0; i < MAX_SURFACES; i++) {
            assert(ci->surfaces[i] != surface);
         }
      }
   }

   /* remove surface from sct_surface list */
   {
      struct sct_surface *si, *next, *prev = NULL;
      for (si = sct->surfaces; si; si = next) {
         next = si->next;
         if (si->surface == surface) {
            /* unlink */
            if (prev)
               prev->next = si->next;
            else
               sct->surfaces = si->next;
            FREE(si);
         }
         else {
            prev = si;
         }
      }
   }
}

void sct_flush_textures	(	struct surface_context_tracker *	sct,
		struct pipe_context *	context
	)

When a scene is flushed/rendered we can release the list of used textures.

Definition at line 366 of file sct.c.

References add_texture_used(), find_context_info(), FREE, texture_list::next, PIPE_MAX_SAMPLERS, pipe_texture_release(), texture_list::texture, sct_context::textures, and sct_context::textures_used.

{
   struct sct_context *ci = find_context_info(sct, context);
   struct texture_list *tl, *next;
   uint i;

   for (tl = ci->textures_used; tl; tl = next) {
      next = tl->next;
      pipe_texture_release(&tl->texture);
      FREE(tl);
   }
   ci->textures_used = NULL;

   /* put the currently bound textures on the 'used' list */
   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
      add_texture_used(ci, ci->textures[i]);
   }
}

struct sct_context_list* sct_get_surface_contexts	(	struct surface_context_tracker *	sct,
		const struct pipe_surface *	surface
	)			[read]

Return list of contexts bound to a surface.

Definition at line 271 of file sct.c.

References sct_surface::contexts, and find_surface_info().

{
   const struct sct_surface *si = find_surface_info(sct, surface);
   return si->contexts;
}

boolean sct_is_texture_used	(	struct surface_context_tracker *	sct,
		const struct pipe_context *	context,
		const struct pipe_texture *	texture
	)

Check if the given texture has been used by the rendering context since the last call to sct_flush_textures().

Definition at line 340 of file sct.c.

References find_context_info(), and find_texture().

{
   const struct sct_context *ci = find_context_info(sct, context);
   return find_texture(ci, texture);
}

void sct_update_texture

(

struct pipe_texture *

tex

)

To be called when the image contents of a texture are changed, such as for gl[Copy]TexSubImage().

XXX this may not be needed

Definition at line 355 of file sct.c.

{

}

static void unbind_context_surface	(	struct surface_context_tracker *	sct,
		struct pipe_context *	context,
		struct pipe_surface *	surface
	)			[static]

Unbind context from surface.

Definition at line 222 of file sct.c.

References find_surface_info(), and remove_context_from_surface().

{
   struct sct_surface *si = find_surface_info(sct, surface);
   if (si) {
      remove_context_from_surface(si, context);
   }
}

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