st_texture.c File Reference

Include dependency graph for st_texture.c:

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Defines
#define	DBG   if(0) printf
Functions
struct pipe_texture *	st_texture_create (struct st_context *st, enum pipe_texture_target target, enum pipe_format format, GLuint last_level, GLuint width0, GLuint height0, GLuint depth0, GLuint compress_byte, GLuint usage)
	Allocate a new pipe_texture object width0, height0, depth0 are the dimensions of the level 0 image (the highest resolution).
GLboolean	st_texture_match_image (const struct pipe_texture *pt, const struct gl_texture_image *image, GLuint face, GLuint level)
	Check if a texture image be pulled into a unified mipmap texture.
GLubyte *	st_texture_image_map (struct st_context *st, struct st_texture_image *stImage, GLuint zoffset, GLuint flags)
	Map a teximage in a mipmap texture.
void	st_texture_image_unmap (struct st_context *st, struct st_texture_image *stImage)
static void	st_surface_data (struct pipe_context *pipe, struct pipe_surface *dst, unsigned dstx, unsigned dsty, const void *src, unsigned src_stride, unsigned srcx, unsigned srcy, unsigned width, unsigned height)
	Upload data to a rectangular sub-region.
void	st_texture_image_data (struct pipe_context *pipe, struct pipe_texture *dst, GLuint face, GLuint level, void *src, GLuint src_row_stride, GLuint src_image_stride)
void	st_texture_image_copy (struct pipe_context *pipe, struct pipe_texture *dst, GLuint dstLevel, struct pipe_texture *src, GLuint face)
int	st_bind_teximage (struct st_framebuffer *stfb, uint surfIndex, int target, int format, int level)
	Redirect rendering into stfb's surface to a texture image.
int	st_release_teximage (struct st_framebuffer *stfb, uint surfIndex, int target, int format, int level)
	Undo surface-to-texture binding.

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Define Documentation

#define DBG   if(0) printf

Definition at line 46 of file st_texture.c.

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Function Documentation

int st_bind_teximage	(	struct st_framebuffer *	stfb,
		uint	surfIndex,
		int	target,
		int	format,
		int	level
	)

Redirect rendering into stfb's surface to a texture image.

Definition at line 356 of file st_texture.c.

{
   GET_CURRENT_CONTEXT(ctx);
   struct st_context *st = ctx->st;
   struct pipe_context *pipe = st->pipe;
   struct pipe_screen *screen = pipe->screen;
   const GLuint unit = ctx->Texture.CurrentUnit;
   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
   struct gl_texture_object *texObj;
   struct gl_texture_image *texImage;
   struct st_texture_image *stImage;
   struct st_renderbuffer *strb;
   GLint face = 0, slice = 0;

   assert(surfIndex <= ST_SURFACE_DEPTH);

   strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);

   if (strb->texture_save || strb->surface_save) {
      /* Error! */
      return 0;
   }

   if (target == ST_TEXTURE_2D) {
      texObj = texUnit->Current2D;
      texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level);
      stImage = st_texture_image(texImage);
   }
   else {
      /* unsupported target */
      return 0;
   }

   st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);

   /* save the renderbuffer's surface/texture info */
   pipe_texture_reference(&strb->texture_save, strb->texture);
   pipe_surface_reference(&strb->surface_save, strb->surface);

   /* plug in new surface/texture info */
   pipe_texture_reference(&strb->texture, stImage->pt);
   strb->surface = screen->get_tex_surface(screen, strb->texture,
                                           face, level, slice,
                                           (PIPE_BUFFER_USAGE_GPU_READ |
                                            PIPE_BUFFER_USAGE_GPU_WRITE));

   st->dirty.st |= ST_NEW_FRAMEBUFFER;

int st_release_teximage	(	struct st_framebuffer *	stfb,
		uint	surfIndex,
		int	target,
		int	format,
		int	level
	)

Undo surface-to-texture binding.

Definition at line 411 of file st_texture.c.

{
   GET_CURRENT_CONTEXT(ctx);
   struct st_context *st = ctx->st;
   struct st_renderbuffer *strb;

   assert(surfIndex <= ST_SURFACE_DEPTH);

   strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);

   if (!strb->texture_save || !strb->surface_save) {
      /* Error! */
      return 0;
   }

   st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);

   /* free tex surface, restore original */
   pipe_surface_reference(&strb->surface, strb->surface_save);
   pipe_texture_reference(&strb->texture, strb->texture_save);

   pipe_surface_reference(&strb->surface_save, NULL);
   pipe_texture_reference(&strb->texture_save, NULL);

   st->dirty.st |= ST_NEW_FRAMEBUFFER;

static void st_surface_data	(	struct pipe_context *	pipe,
		struct pipe_surface *	dst,
		unsigned	dstx,
		unsigned	dsty,
		const void *	src,
		unsigned	src_stride,
		unsigned	srcx,
		unsigned	srcy,
		unsigned	width,
		unsigned	height
	)			[static]

Upload data to a rectangular sub-region.

Lots of choices how to do this:

• memcpy by span to current destination
• upload data as new buffer and blit

Currently always memcpy.

Definition at line 233 of file st_texture.c.

{
   struct pipe_screen *screen = pipe->screen;
   void *map = screen->surface_map(screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE);

   pipe_copy_rect(map,
                  &dst->block,
                  dst->stride,
                  dstx, dsty, 
                  width, height, 
                  src, src_stride, 
                  srcx, srcy);

struct pipe_texture* st_texture_create	(	struct st_context *	st,
		enum pipe_texture_target	target,
		enum pipe_format	format,
		GLuint	last_level,
		GLuint	width0,
		GLuint	height0,
		GLuint	depth0,
		GLuint	compress_byte,
		GLuint	usage
	)			[read]

Allocate a new pipe_texture object width0, height0, depth0 are the dimensions of the level 0 image (the highest resolution).

last_level indicates how many mipmap levels to allocate storage for. For non-mipmapped textures, this will be zero.

Definition at line 74 of file st_texture.c.

References assert, pipe_texture::block, pipe_texture::compressed, DBG, pipe_texture::depth, pipe_texture::format, pipe_texture::height, pipe_screen::is_format_supported, pipe_texture::last_level, pf_get_block(), st_context::pipe, PIPE_TEXTURE_CUBE, PIPE_TEXTURE_USAGE_SAMPLER, pipe_texture::refcount, pipe_context::screen, pipe_texture::target, pipe_texture::tex_usage, pipe_screen::texture_create, and pipe_texture::width.

{
   struct pipe_texture pt, *newtex;
   struct pipe_screen *screen = st->pipe->screen;

   assert(target <= PIPE_TEXTURE_CUBE);

   DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
       _mesa_lookup_enum_by_nr(target),
       _mesa_lookup_enum_by_nr(format), last_level);

   assert(format);
   assert(screen->is_format_supported(screen, format, target, 
                                      PIPE_TEXTURE_USAGE_SAMPLER, 0));

   memset(&pt, 0, sizeof(pt));
   pt.target = target;
   pt.format = format;
   pt.last_level = last_level;
   pt.width[0] = width0;
   pt.height[0] = height0;
   pt.depth[0] = depth0;
   pt.compressed = compress_byte ? 1 : 0;
   pf_get_block(format, &pt.block);
   pt.tex_usage = usage;

   newtex = screen->texture_create(screen, &pt);

   assert(!newtex || newtex->refcount == 1);

   return newtex;
}

void st_texture_image_copy	(	struct pipe_context *	pipe,
		struct pipe_texture *	dst,
		GLuint	dstLevel,
		struct pipe_texture *	src,
		GLuint	face
	)

Definition at line 292 of file st_texture.c.

References assert, pipe_texture::depth, FALSE, pipe_screen::get_tex_surface, pipe_surface::height, pipe_texture::height, pipe_texture::last_level, PIPE_BUFFER_USAGE_CPU_READ, PIPE_BUFFER_USAGE_GPU_READ, PIPE_BUFFER_USAGE_GPU_WRITE, pipe_surface_reference(), pipe_context::screen, pipe_context::surface_copy, pipe_screen::surface_map, pipe_screen::surface_unmap, pipe_screen::tex_surface_release, pipe_surface::width, and pipe_texture::width.

{
   struct pipe_screen *screen = pipe->screen;
   GLuint width = dst->width[dstLevel];
   GLuint height = dst->height[dstLevel];
   GLuint depth = dst->depth[dstLevel];
   struct pipe_surface *src_surface;
   struct pipe_surface *dst_surface;
   GLuint i;

   for (i = 0; i < depth; i++) {
      GLuint srcLevel;

      /* find src texture level of needed size */
      for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
         if (src->width[srcLevel] == width &&
             src->height[srcLevel] == height) {
            break;
         }
      }
      assert(src->width[srcLevel] == width);
      assert(src->height[srcLevel] == height);

#if 0
      {
         src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
                                               PIPE_BUFFER_USAGE_CPU_READ);
         ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
         map += src_surface->width * src_surface->height * 4 / 2;
         printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
                __FUNCTION__,
                map[0], map[1], map[2], map[3],
                src, srcLevel, dst, dstLevel);

         screen->surface_unmap(screen, src_surface);
         pipe_surface_reference(&src_surface, NULL);
      }
#endif

      dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
                                            PIPE_BUFFER_USAGE_GPU_WRITE);

      src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
                                            PIPE_BUFFER_USAGE_GPU_READ);

      pipe->surface_copy(pipe,
                         FALSE,
                         dst_surface,
                         0, 0, /* destX, Y */
                         src_surface,
                         0, 0, /* srcX, Y */
                         width, height);

      screen->tex_surface_release(screen, &src_surface);
      screen->tex_surface_release(screen, &dst_surface);

void st_texture_image_data	(	struct pipe_context *	pipe,
		struct pipe_texture *	dst,
		GLuint	face,
		GLuint	level,
		void *	src,
		GLuint	src_row_stride,
		GLuint	src_image_stride
	)

Definition at line 257 of file st_texture.c.

References DBG, pipe_texture::depth, pipe_screen::get_tex_surface, pipe_texture::height, PIPE_BUFFER_USAGE_CPU_WRITE, pipe_context::screen, st_surface_data(), pipe_screen::tex_surface_release, and pipe_texture::width.

{
   struct pipe_screen *screen = pipe->screen;
   GLuint depth = dst->depth[level];
   GLuint i;
   const GLubyte *srcUB = src;
   struct pipe_surface *dst_surface;

   DBG("%s\n", __FUNCTION__);
   for (i = 0; i < depth; i++) {
      dst_surface = screen->get_tex_surface(screen, dst, face, level, i,
                                            PIPE_BUFFER_USAGE_CPU_WRITE);

      st_surface_data(pipe, dst_surface,
                      0, 0,                             /* dstx, dsty */
                      srcUB,
                      src_row_stride,
                      0, 0,                             /* source x, y */
                      dst->width[level], dst->height[level]);       /* width, height */

      screen->tex_surface_release(screen, &dst_surface);

      srcUB += src_image_stride;

GLubyte* st_texture_image_map	(	struct st_context *	st,
		struct st_texture_image *	stImage,
		GLuint	zoffset,
		GLuint	flags
	)

Map a teximage in a mipmap texture.

Parameters:

	row_stride	returns row stride in bytes
	image_stride	returns image stride in bytes (for 3D textures).

Returns:

address of mapping

Definition at line 190 of file st_texture.c.

{
   struct pipe_screen *screen = st->pipe->screen;
   struct pipe_texture *pt = stImage->pt;
   DBG("%s \n", __FUNCTION__);

   stImage->surface = screen->get_tex_surface(screen, pt, stImage->face,
                                              stImage->level, zoffset, 
                                              flags);

   if (stImage->surface)
      return screen->surface_map(screen, stImage->surface, flags);
   else

void st_texture_image_unmap	(	struct st_context *	st,
		struct st_texture_image *	stImage
	)

Definition at line 210 of file st_texture.c.

References DBG, st_context::pipe, pipe_surface_reference(), pipe_context::screen, st_texture_image::surface, and pipe_screen::surface_unmap.

{
   struct pipe_screen *screen = st->pipe->screen;

   DBG("%s\n", __FUNCTION__);

   screen->surface_unmap(screen, stImage->surface);

GLboolean st_texture_match_image	(	const struct pipe_texture *	pt,
		const struct gl_texture_image *	image,
		GLuint	face,
		GLuint	level
	)

Check if a texture image be pulled into a unified mipmap texture.

This mirrors the completeness test in a lot of ways.

Not sure whether I want to pass gl_texture_image here.

Definition at line 123 of file st_texture.c.

References pipe_texture::compressed, pipe_texture::depth, pipe_texture::format, pipe_texture::height, st_mesa_format_to_pipe_format(), and pipe_texture::width.

{
   /* Images with borders are never pulled into mipmap textures. 
    */
   if (image->Border) 
      return GL_FALSE;

   if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
       image->IsCompressed != pt->compressed)
      return GL_FALSE;

   /* Test image dimensions against the base level image adjusted for
    * minification.  This will also catch images not present in the
    * texture, changed targets, etc.
    */
   if (image->Width != pt->width[level] ||
       image->Height != pt->height[level] ||
       image->Depth != pt->depth[level])
      return GL_FALSE;

   return GL_TRUE;
}

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