draw_pipe_util.c File Reference

Include dependency graph for draw_pipe_util.c:

Go to the source code of this file.

Defines
#define	MAX_VERTEX_SIZE   ((2 + PIPE_MAX_SHADER_OUTPUTS) * 4 * sizeof(float))
Functions
void	draw_pipe_passthrough_point (struct draw_stage *stage, struct prim_header *header)
void	draw_pipe_passthrough_line (struct draw_stage *stage, struct prim_header *header)
void	draw_pipe_passthrough_tri (struct draw_stage *stage, struct prim_header *header)
boolean	draw_alloc_temp_verts (struct draw_stage *stage, unsigned nr)
	Allocate space for temporary post-transform vertices, such as for clipping.
void	draw_free_temp_verts (struct draw_stage *stage)
void	draw_reset_vertex_ids (struct draw_context *draw)

---

Define Documentation

#define MAX_VERTEX_SIZE   ((2 + PIPE_MAX_SHADER_OUTPUTS) * 4 * sizeof(float))

Definition at line 63 of file draw_pipe_util.c.

---

Function Documentation

boolean draw_alloc_temp_verts	(	struct draw_stage *	stage,
		unsigned	nr
	)

Allocate space for temporary post-transform vertices, such as for clipping.

Definition at line 69 of file draw_pipe_util.c.

References assert, FALSE, FREE, MALLOC, MAX_VERTEX_SIZE, draw_stage::nr_tmps, draw_stage::tmp, and TRUE.

{
   assert(!stage->tmp);

   stage->tmp = NULL;
   stage->nr_tmps = nr;

   if (nr != 0)
   {
      unsigned i;
      ubyte *store = (ubyte *) MALLOC( MAX_VERTEX_SIZE * nr );

      if (store == NULL)
         return FALSE;

      stage->tmp = (struct vertex_header **) MALLOC( sizeof(struct vertex_header *) * nr );
      if (stage->tmp == NULL) {
         FREE(store);
         return FALSE;
      }
         
      for (i = 0; i < nr; i++)
         stage->tmp[i] = (struct vertex_header *)(store + i * MAX_VERTEX_SIZE);
   }

   return TRUE;
}

void draw_free_temp_verts

(

struct draw_stage *

stage

)

Definition at line 98 of file draw_pipe_util.c.

References FREE, and draw_stage::tmp.

{
   if (stage->tmp) {
      FREE( stage->tmp[0] );
      FREE( stage->tmp );
      stage->tmp = NULL;
   }
}

void draw_pipe_passthrough_line	(	struct draw_stage *	stage,
		struct prim_header *	header
	)

Definition at line 46 of file draw_pipe_util.c.

References draw_stage::line, and draw_stage::next.

{
   stage->next->line(stage->next, header);
}

void draw_pipe_passthrough_point	(	struct draw_stage *	stage,
		struct prim_header *	header
	)

Definition at line 40 of file draw_pipe_util.c.

References draw_stage::next, and draw_stage::point.

{
   stage->next->point(stage->next, header);
}

void draw_pipe_passthrough_tri	(	struct draw_stage *	stage,
		struct prim_header *	header
	)

Definition at line 52 of file draw_pipe_util.c.

References draw_stage::next, and draw_stage::tri.

{
   stage->next->tri(stage->next, header);
}

void draw_reset_vertex_ids

(

struct draw_context *

draw

)

Definition at line 112 of file draw_pipe_util.c.

References draw_context::first, draw_stage::next, draw_stage::nr_tmps, draw_context::pipeline, stride(), draw_stage::tmp, UNDEFINED_VERTEX_ID, draw_context::vertex_count, vertex_header::vertex_id, draw_context::vertex_stride, and draw_context::verts.

{
   struct draw_stage *stage = draw->pipeline.first;
   
   while (stage) {
      unsigned i;

      for (i = 0; i < stage->nr_tmps; i++)
         stage->tmp[i]->vertex_id = UNDEFINED_VERTEX_ID;

      stage = stage->next;
   }

   if (draw->pipeline.verts)
   {
      unsigned i;
      char *verts = draw->pipeline.verts;
      unsigned stride = draw->pipeline.vertex_stride;

      for (i = 0; i < draw->pipeline.vertex_count; i++) {
         ((struct vertex_header *)verts)->vertex_id = UNDEFINED_VERTEX_ID;
         verts += stride;
      }
   }
}

---