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/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 1999-2005 Brian Paul 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, sublicense,
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL 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.
*/
#ifndef SP_PRIM_SETUP_H
#define SP_PRIM_SETUP_H
/* Vertices are just an array of floats, with all the attributes
* packed. We currently assume a layout like:
*
* attr[0][0..3] - window position
* attr[1..n][0..3] - remaining attributes.
*
* Attributes are assumed to be 4 floats wide but are packed so that
* all the enabled attributes run contiguously.
*/
struct draw_stage;
struct softpipe_context;
extern struct draw_stage *sp_draw_render_stage( struct softpipe_context *softpipe );
/* A special stage to gather the stream of triangles, lines, points
* together and reconstruct vertex buffers for hardware upload.
*
* First attempt, work in progress.
*
* TODO:
* - separate out vertex buffer building and primitive emit, ie >1 draw per vb.
* - tell vbuf stage how to build hw vertices directly
* - pass vbuf stage a buffer pointer for direct emit to agp/vram.
*/
typedef void (*vbuf_draw_func)( struct pipe_context *pipe,
unsigned prim,
const ushort *elements,
unsigned nr_elements,
const void *vertex_buffer,
unsigned nr_vertices );
extern struct draw_stage *sp_draw_vbuf_stage( struct draw_context *draw_context,
struct pipe_context *pipe,
vbuf_draw_func draw );
/* Test harness
*/
void sp_vbuf_setup_draw( struct pipe_context *pipe,
unsigned prim,
const ushort *elements,
unsigned nr_elements,
const void *vertex_buffer,
unsigned nr_vertices );
#endif /* SP_PRIM_SETUP_H */
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