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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.
*
**************************************************************************/
/* Author:
* Brian Paul
* Keith Whitwell
*/
#include "pipe/p_defines.h"
#include "pipe/p_context.h"
#include "pipe/p_winsys.h"
#include "pipe/p_util.h"
#include "sp_context.h"
#include "sp_state.h"
#include "pipe/draw/draw_context.h"
boolean
softpipe_draw_arrays(struct pipe_context *pipe, unsigned mode,
unsigned start, unsigned count)
{
return softpipe_draw_elements(pipe, NULL, 0, mode, start, count);
}
/**
* Draw vertex arrays, with optional indexing.
* Basically, map the vertex buffers (and drawing surfaces), then hand off
* the drawing to the 'draw' module.
*
* XXX should the element buffer be specified/bound with a separate function?
*/
boolean
softpipe_draw_elements(struct pipe_context *pipe,
struct pipe_buffer_handle *indexBuffer,
unsigned indexSize,
unsigned mode, unsigned start, unsigned count)
{
struct softpipe_context *sp = softpipe_context(pipe);
struct draw_context *draw = sp->draw;
unsigned length, first, incr, i;
/* first, check that the primitive is not malformed */
draw_prim_info( mode, &first, &incr );
length = draw_trim( count, first, incr );
if (!length)
return TRUE;
if (sp->dirty)
softpipe_update_derived( sp );
softpipe_map_surfaces(sp);
/*
* Map vertex buffers
*/
for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
if (sp->vertex_buffer[i].buffer) {
void *buf
= pipe->winsys->buffer_map(pipe->winsys,
sp->vertex_buffer[i].buffer,
PIPE_BUFFER_FLAG_READ);
draw_set_mapped_vertex_buffer(draw, i, buf);
}
}
/* Map index buffer, if present */
if (indexBuffer) {
void *mapped_indexes
= pipe->winsys->buffer_map(pipe->winsys, indexBuffer,
PIPE_BUFFER_FLAG_READ);
draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
}
else {
/* no index/element buffer */
draw_set_mapped_element_buffer(draw, 0, NULL);
}
/* draw! */
draw_arrays(draw, mode, start, count);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
if (sp->vertex_buffer[i].buffer) {
pipe->winsys->buffer_unmap(pipe->winsys, sp->vertex_buffer[i].buffer);
draw_set_mapped_vertex_buffer(draw, i, NULL);
}
}
if (indexBuffer) {
pipe->winsys->buffer_unmap(pipe->winsys, indexBuffer);
draw_set_mapped_element_buffer(draw, 0, NULL);
}
softpipe_unmap_surfaces(sp);
return TRUE;
}
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