spu_vertex_fetch.c File Reference

Include dependency graph for spu_vertex_fetch.c:

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Typedefs
typedef void(*	spu_fetch_func )(qword *out, const qword *in, const qword *shuffle_data)
Functions
static void	generic_vertex_fetch (struct spu_vs_context *draw, struct spu_exec_machine *machine, const unsigned *elts, unsigned count)
	Fetch vertex attributes for 'count' vertices.
void	spu_update_vertex_fetch (struct spu_vs_context *draw)
Variables
static const qword fetch_shuffle_data[5]	ALIGN16_ATTRIB

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Typedef Documentation

typedef void(* spu_fetch_func)(qword *out, const qword *in, const qword *shuffle_data)

Definition at line 42 of file spu_vertex_fetch.c.

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Function Documentation

static void generic_vertex_fetch	(	struct spu_vs_context *	draw,
		struct spu_exec_machine *	machine,
		const unsigned *	elts,
		unsigned	count
	)			[static]

Fetch vertex attributes for 'count' vertices.

Definition at line 87 of file spu_vertex_fetch.c.

References ALIGN16_ATTRIB, ASSERT, spu_vs_context::code, spu_vs_context::code_offset, spu_exec_machine::Inputs, spu_vs_context::nr_attrs, spu_vs_context::pitch, spu_exec_channel::q, spu_vs_context::size, spu_dcache_fetch_unaligned(), spu_vs_context::src_ptr, spu_vs_context::vertex_fetch, and spu_exec_vector::xyzw.

{
   unsigned nr_attrs = draw->vertex_fetch.nr_attrs;
   unsigned attr;

   ASSERT(count <= 4);

#if DRAW_DBG
   printf("SPU: %s count = %u, nr_attrs = %u\n", 
          __FUNCTION__, count, nr_attrs);
#endif

   /* loop over vertex attributes (vertex shader inputs)
    */
   for (attr = 0; attr < nr_attrs; attr++) {
      const unsigned pitch = draw->vertex_fetch.pitch[attr];
      const uint64_t src = draw->vertex_fetch.src_ptr[attr];
      const spu_fetch_func fetch = (spu_fetch_func)
          (draw->vertex_fetch.code + draw->vertex_fetch.code_offset[attr]);
      unsigned i;
      unsigned idx;
      const unsigned bytes_per_entry = draw->vertex_fetch.size[attr];
      const unsigned quads_per_entry = (bytes_per_entry + 15) / 16;
      qword in[2 * 4] ALIGN16_ATTRIB;


      /* Fetch four attributes for four vertices.  
       */
      idx = 0;
      for (i = 0; i < count; i++) {
         const uint64_t addr = src + (elts[i] * pitch);

#if DRAW_DBG
         printf("SPU: fetching = 0x%llx\n", addr);
#endif

         spu_dcache_fetch_unaligned(& in[idx], addr, bytes_per_entry);
         idx += quads_per_entry;
      }

      /* Be nice and zero out any missing vertices.
       */
      (void) memset(& in[idx], 0, (8 - idx) * sizeof(qword));


      /* Convert all 4 vertices to vectors of float.
       */
      (*fetch)(&machine->Inputs[attr].xyzw[0].q, in, fetch_shuffle_data);
   }
}

void spu_update_vertex_fetch

(

struct spu_vs_context *

draw

)

Definition at line 142 of file spu_vertex_fetch.c.

References spu_vs_context::fetch_func, generic_vertex_fetch(), and spu_vs_context::vertex_fetch.

{
   draw->vertex_fetch.fetch_func = generic_vertex_fetch;
}

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Variable Documentation

const qword fetch_shuffle_data [5] ALIGN16_ATTRIB [static]

Definition at line 46 of file spu_vertex_fetch.c.

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