brw_gs.c File Reference

Include dependency graph for brw_gs.c:

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Functions
static void	compile_gs_prog (struct brw_context *brw, struct brw_gs_prog_key *key)
static boolean	search_cache (struct brw_context *brw, struct brw_gs_prog_key *key)
static void	populate_key (struct brw_context *brw, struct brw_gs_prog_key *key)
static void	upload_gs_prog (struct brw_context *brw)
Variables
static const int	gs_prim [PIPE_PRIM_POLYGON+1]
struct brw_tracked_state	brw_gs_prog

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Function Documentation

static void compile_gs_prog	(	struct brw_context *	brw,
		struct brw_gs_prog_key *	key
	)			[static]

Definition at line 41 of file brw_gs.c.

References brw_gs_prog_key::attrs, brw_count_bits(), brw_get_program(), brw_gs_lines(), brw_gs_points(), BRW_GS_PROG, brw_gs_quad_strip(), brw_gs_quads(), brw_gs_tris(), brw_init_compile(), BRW_MASK_DISABLE, brw_set_mask_control(), brw_upload_cache(), brw_context::cache, brw_gs_compile::func, brw_context::gs, brw_gs_prog_key::hint_gs_always, brw_gs_compile::key, brw_gs_compile::nr_attrs, brw_gs_compile::nr_bytes, brw_gs_compile::nr_regs, PIPE_PRIM_LINE_LOOP, PIPE_PRIM_LINES, PIPE_PRIM_POINTS, PIPE_PRIM_QUAD_STRIP, PIPE_PRIM_QUADS, PIPE_PRIM_TRIANGLES, brw_gs_prog_key::primitive, brw_context::prog_data, brw_gs_compile::prog_data, brw_context::prog_gs_offset, REG_SIZE, and brw_compile::single_program_flow.

{
   struct brw_gs_compile c;
   const unsigned *program;
   unsigned program_size;

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

   c.key = *key;

   /* Need to locate the two positions present in vertex + header.
    * These are currently hardcoded:
    */
   c.nr_attrs = brw_count_bits(c.key.attrs);
   c.nr_regs = (c.nr_attrs + 1) / 2 + 1;  /* are vertices packed, or reg-aligned? */
   c.nr_bytes = c.nr_regs * REG_SIZE;


   /* Begin the compilation:
    */
   brw_init_compile(&c.func);

   c.func.single_program_flow = 1;

   /* For some reason the thread is spawned with only 4 channels
    * unmasked.
    */
   brw_set_mask_control(&c.func, BRW_MASK_DISABLE);


   /* Note that primitives which don't require a GS program have
    * already been weeded out by this stage:
    */
   switch (key->primitive) {
   case PIPE_PRIM_QUADS:
      brw_gs_quads( &c );
      break;
   case PIPE_PRIM_QUAD_STRIP:
      brw_gs_quad_strip( &c );
      break;
   case PIPE_PRIM_LINE_LOOP:
      brw_gs_lines( &c );
      break;
   case PIPE_PRIM_LINES:
      if (key->hint_gs_always)
         brw_gs_lines( &c );
      else {
         return;
      }
      break;
   case PIPE_PRIM_TRIANGLES:
      if (key->hint_gs_always)
         brw_gs_tris( &c );
      else {
         return;
      }
      break;
   case PIPE_PRIM_POINTS:
      if (key->hint_gs_always)
         brw_gs_points( &c );
      else {
         return;
      }
      break;
   default:
      return;
   }

   /* get the program
    */
   program = brw_get_program(&c.func, &program_size);

   /* Upload
    */
   brw->gs.prog_gs_offset = brw_upload_cache( &brw->cache[BRW_GS_PROG],
                                              &c.key,
                                              sizeof(c.key),
                                              program,
                                              program_size,
                                              &c.prog_data,
                                              &brw->gs.prog_data );
}

static void populate_key	(	struct brw_context *	brw,
		struct brw_gs_prog_key *	key
	)			[static]

Definition at line 149 of file brw_gs.c.

References brw_gs_prog_key::attrs, gs_prim, brw_gs_prog_key::hint_gs_always, brw_gs_prog_key::need_gs_prog, brw_vs_prog_data::outputs_written, PIPE_PRIM_LINE_LOOP, PIPE_PRIM_QUAD_STRIP, PIPE_PRIM_QUADS, brw_context::primitive, brw_gs_prog_key::primitive, brw_context::prog_data, and brw_context::vs.

{
   memset(key, 0, sizeof(*key));

   /* CACHE_NEW_VS_PROG */
   key->attrs = brw->vs.prog_data->outputs_written;

   /* BRW_NEW_PRIMITIVE */
   key->primitive = gs_prim[brw->primitive];

   key->hint_gs_always = 0;     /* debug code? */

   key->need_gs_prog = (key->hint_gs_always ||
                        brw->primitive == PIPE_PRIM_QUADS ||
                        brw->primitive == PIPE_PRIM_QUAD_STRIP ||
                        brw->primitive == PIPE_PRIM_LINE_LOOP);
}

static boolean search_cache	(	struct brw_context *	brw,
		struct brw_gs_prog_key *	key
	)			[static]

Definition at line 126 of file brw_gs.c.

References BRW_GS_PROG, brw_search_cache(), brw_context::cache, brw_context::gs, brw_context::prog_data, and brw_context::prog_gs_offset.

{
   return brw_search_cache(&brw->cache[BRW_GS_PROG],
                           key, sizeof(*key),
                           &brw->gs.prog_data,
                           &brw->gs.prog_gs_offset);
}

static void upload_gs_prog

(

struct brw_context *

brw

)

[static]

Definition at line 170 of file brw_gs.c.

References brw_state_flags::cache, CACHE_NEW_GS_PROG, compile_gs_prog(), brw_context::dirty, brw_context::gs, brw_gs_prog_key::need_gs_prog, populate_key(), brw_context::prog_active, search_cache(), and brw_context::state.

{
   struct brw_gs_prog_key key;

   /* Populate the key:
    */
   populate_key(brw, &key);

   if (brw->gs.prog_active != key.need_gs_prog) {
      brw->state.dirty.cache |= CACHE_NEW_GS_PROG;
      brw->gs.prog_active = key.need_gs_prog;
   }

   if (brw->gs.prog_active) {
      if (!search_cache(brw, &key))
         compile_gs_prog( brw, &key );
   }
}

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Variable Documentation

struct brw_tracked_state brw_gs_prog

Initial value:

 {
   .dirty = {
      .brw   =  0x100000 ,
      .cache =  (1<<BRW_VS_PROG) 
   },
   .update = upload_gs_prog
}

Definition at line 190 of file brw_gs.c.

const int gs_prim[PIPE_PRIM_POLYGON+1] [static]

Initial value:

 {
   PIPE_PRIM_POINTS,
   PIPE_PRIM_LINES,
   PIPE_PRIM_LINE_LOOP,
   PIPE_PRIM_LINES,
   PIPE_PRIM_TRIANGLES,
   PIPE_PRIM_TRIANGLES,
   PIPE_PRIM_TRIANGLES,
   PIPE_PRIM_QUADS,
   PIPE_PRIM_QUAD_STRIP,
   PIPE_PRIM_TRIANGLES
}

Definition at line 136 of file brw_gs.c.

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