sp_clear.c File Reference

Include dependency graph for sp_clear.c:

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Functions
static unsigned	convert_color (enum pipe_format srcFormat, unsigned srcColor, enum pipe_format dstFormat)
	Convert packed pixel from one format to another.
void	softpipe_clear (struct pipe_context *pipe, struct pipe_surface *ps, unsigned clearValue)
	Clear the given surface to the specified value.

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Function Documentation

static unsigned convert_color	(	enum pipe_format	srcFormat,
		unsigned	srcColor,
		enum pipe_format	dstFormat
	)			[static]

Convert packed pixel from one format to another.

Definition at line 46 of file sp_clear.c.

References util_pack_color_ub(), and util_unpack_color_ub().

{
   ubyte r, g, b, a;
   unsigned dstColor;

   util_unpack_color_ub(srcFormat, &srcColor, &r, &g, &b, &a);
   util_pack_color_ub(r, g, b, a, dstFormat, &dstColor);

   return dstColor;
}

void softpipe_clear	(	struct pipe_context *	pipe,
		struct pipe_surface *	ps,
		unsigned	clearValue
	)

Clear the given surface to the specified value.

No masking, no scissor (clear entire buffer). Note: when clearing a color buffer, the clearValue is always encoded as PIPE_FORMAT_A8R8G8B8_UNORM.

Definition at line 67 of file sp_clear.c.

References softpipe_context::cbuf_cache, pipe_framebuffer_state::cbufs, convert_color(), pipe_surface::format, softpipe_context::framebuffer, pipe_surface::height, softpipe_context::no_rast, pipe_framebuffer_state::num_cbufs, PIPE_FORMAT_A8R8G8B8_UNORM, PIPE_SURFACE_STATUS_CLEAR, softpipe_context(), softpipe_update_derived(), sp_tile_cache_clear(), sp_tile_cache_get_surface(), pipe_surface::status, pipe_context::surface_fill, pipe_surface::width, pipe_framebuffer_state::zsbuf, and softpipe_context::zsbuf_cache.

{
   struct softpipe_context *softpipe = softpipe_context(pipe);
   uint i;

   if (softpipe->no_rast)
      return;

#if 0
   softpipe_update_derived(softpipe); /* not needed?? */
#endif

   if (ps == sp_tile_cache_get_surface(softpipe->zsbuf_cache)) {
      sp_tile_cache_clear(softpipe->zsbuf_cache, clearValue);
      softpipe->framebuffer.zsbuf->status = PIPE_SURFACE_STATUS_CLEAR;
#if TILE_CLEAR_OPTIMIZATION
      return;
#endif
   }

   for (i = 0; i < softpipe->framebuffer.num_cbufs; i++) {
      if (ps == sp_tile_cache_get_surface(softpipe->cbuf_cache[i])) {
         unsigned cv;
         if (ps->format != PIPE_FORMAT_A8R8G8B8_UNORM) {
            cv = convert_color(PIPE_FORMAT_A8R8G8B8_UNORM, clearValue,
                               ps->format);
         }
         else {
            cv = clearValue;
         }
         sp_tile_cache_clear(softpipe->cbuf_cache[i], cv);
         softpipe->framebuffer.cbufs[i]->status = PIPE_SURFACE_STATUS_CLEAR;
      }
   }

#if !TILE_CLEAR_OPTIMIZATION
   /* non-cached surface */
   pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
#endif
}

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