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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "util/u_memory.h"
#include "draw/draw_private.h"
#include "draw/draw_pipe.h"
void
draw_pipe_passthrough_point(struct draw_stage *stage, struct prim_header *header)
{
stage->next->point(stage->next, header);
}
void
draw_pipe_passthrough_line(struct draw_stage *stage, struct prim_header *header)
{
stage->next->line(stage->next, header);
}
void
draw_pipe_passthrough_tri(struct draw_stage *stage, struct prim_header *header)
{
stage->next->tri(stage->next, header);
}
/* This is only used for temporary verts.
*/
#define MAX_VERTEX_SIZE ((2 + PIPE_MAX_SHADER_OUTPUTS) * 4 * sizeof(float))
/**
* Allocate space for temporary post-transform vertices, such as for clipping.
*/
boolean draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr )
{
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 )
{
if (stage->tmp) {
FREE( stage->tmp[0] );
FREE( stage->tmp );
stage->tmp = NULL;
}
}
/* Reset vertex ids. This is basically a type of flush.
*
* Called only from draw_pipe_vbuf.c
*/
void draw_reset_vertex_ids(struct draw_context *draw)
{
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;
}
}
}
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