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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 "draw/draw_private.h"
#include "draw/draw_pipe.h"
boolean draw_pipeline_init( struct draw_context *draw )
{
/* create pipeline stages */
draw->pipeline.wide_line = draw_wide_line_stage( draw );
draw->pipeline.wide_point = draw_wide_point_stage( draw );
draw->pipeline.stipple = draw_stipple_stage( draw );
draw->pipeline.unfilled = draw_unfilled_stage( draw );
draw->pipeline.twoside = draw_twoside_stage( draw );
draw->pipeline.offset = draw_offset_stage( draw );
draw->pipeline.clip = draw_clip_stage( draw );
draw->pipeline.flatshade = draw_flatshade_stage( draw );
draw->pipeline.cull = draw_cull_stage( draw );
draw->pipeline.validate = draw_validate_stage( draw );
draw->pipeline.first = draw->pipeline.validate;
if (!draw->pipeline.wide_line ||
!draw->pipeline.wide_point ||
!draw->pipeline.stipple ||
!draw->pipeline.unfilled ||
!draw->pipeline.twoside ||
!draw->pipeline.offset ||
!draw->pipeline.clip ||
!draw->pipeline.flatshade ||
!draw->pipeline.cull ||
!draw->pipeline.validate)
return FALSE;
/* these defaults are oriented toward the needs of softpipe */
draw->pipeline.wide_point_threshold = 1000000.0; /* infinity */
draw->pipeline.wide_line_threshold = 1.0;
draw->pipeline.line_stipple = TRUE;
draw->pipeline.point_sprite = TRUE;
return TRUE;
}
void draw_pipeline_destroy( struct draw_context *draw )
{
if (draw->pipeline.wide_line)
draw->pipeline.wide_line->destroy( draw->pipeline.wide_line );
if (draw->pipeline.wide_point)
draw->pipeline.wide_point->destroy( draw->pipeline.wide_point );
if (draw->pipeline.stipple)
draw->pipeline.stipple->destroy( draw->pipeline.stipple );
if (draw->pipeline.unfilled)
draw->pipeline.unfilled->destroy( draw->pipeline.unfilled );
if (draw->pipeline.twoside)
draw->pipeline.twoside->destroy( draw->pipeline.twoside );
if (draw->pipeline.offset)
draw->pipeline.offset->destroy( draw->pipeline.offset );
if (draw->pipeline.clip)
draw->pipeline.clip->destroy( draw->pipeline.clip );
if (draw->pipeline.flatshade)
draw->pipeline.flatshade->destroy( draw->pipeline.flatshade );
if (draw->pipeline.cull)
draw->pipeline.cull->destroy( draw->pipeline.cull );
if (draw->pipeline.validate)
draw->pipeline.validate->destroy( draw->pipeline.validate );
if (draw->pipeline.aaline)
draw->pipeline.aaline->destroy( draw->pipeline.aaline );
if (draw->pipeline.aapoint)
draw->pipeline.aapoint->destroy( draw->pipeline.aapoint );
if (draw->pipeline.pstipple)
draw->pipeline.pstipple->destroy( draw->pipeline.pstipple );
if (draw->pipeline.rasterize)
draw->pipeline.rasterize->destroy( draw->pipeline.rasterize );
}
/**
* Build primitive to render a point with vertex at v0.
*/
static void do_point( struct draw_context *draw,
const char *v0 )
{
struct prim_header prim;
prim.flags = 0;
prim.pad = 0;
prim.v[0] = (struct vertex_header *)v0;
draw->pipeline.first->point( draw->pipeline.first, &prim );
}
/**
* Build primitive to render a line with vertices at v0, v1.
* \param flags bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE
*/
static void do_line( struct draw_context *draw,
ushort flags,
const char *v0,
const char *v1 )
{
struct prim_header prim;
prim.flags = flags;
prim.pad = 0;
prim.v[0] = (struct vertex_header *)v0;
prim.v[1] = (struct vertex_header *)v1;
draw->pipeline.first->line( draw->pipeline.first, &prim );
}
/**
* Build primitive to render a triangle with vertices at v0, v1, v2.
* \param flags bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE
*/
static void do_triangle( struct draw_context *draw,
ushort flags,
char *v0,
char *v1,
char *v2 )
{
struct prim_header prim;
prim.v[0] = (struct vertex_header *)v0;
prim.v[1] = (struct vertex_header *)v1;
prim.v[2] = (struct vertex_header *)v2;
prim.flags = flags;
prim.pad = 0;
draw->pipeline.first->tri( draw->pipeline.first, &prim );
}
/*
* Set up macros for draw_pt_decompose.h template code.
* This code uses vertex indexes / elements.
*/
#define QUAD(i0,i1,i2,i3) \
do_triangle( draw, \
( DRAW_PIPE_RESET_STIPPLE | \
DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_2 ), \
verts + stride * elts[i0], \
verts + stride * elts[i1], \
verts + stride * elts[i3]); \
do_triangle( draw, \
( DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_1 ), \
verts + stride * elts[i1], \
verts + stride * elts[i2], \
verts + stride * elts[i3])
#define TRIANGLE(flags,i0,i1,i2) \
do_triangle( draw, \
elts[i0], /* flags */ \
verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (elts[i2] & ~DRAW_PIPE_FLAG_MASK) );
#define LINE(flags,i0,i1) \
do_line( draw, \
elts[i0], \
verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK) );
#define POINT(i0) \
do_point( draw, \
verts + stride * elts[i0] )
#define FUNC pipe_run
#define ARGS \
struct draw_context *draw, \
unsigned prim, \
struct vertex_header *vertices, \
unsigned stride, \
const ushort *elts
#define LOCAL_VARS \
char *verts = (char *)vertices; \
boolean flatfirst = (draw->rasterizer->flatshade && \
draw->rasterizer->flatshade_first); \
unsigned i; \
ushort flags
#define FLUSH
#include "draw_pt_decompose.h"
#undef ARGS
#undef LOCAL_VARS
/**
* Code to run the pipeline on a fairly arbitary collection of vertices.
* For drawing indexed primitives.
*
* Vertex headers must be pre-initialized with the
* UNDEFINED_VERTEX_ID, this code will cause that id to become
* overwritten, so it may have to be reset if there is the intention
* to reuse the vertices.
*
* This code provides a callback to reset the vertex id's which the
* draw_vbuf.c code uses when it has to perform a flush.
*/
void draw_pipeline_run( struct draw_context *draw,
unsigned prim,
struct vertex_header *vertices,
unsigned vertex_count,
unsigned stride,
const ushort *elts,
unsigned count )
{
char *verts = (char *)vertices;
draw->pipeline.verts = verts;
draw->pipeline.vertex_stride = stride;
draw->pipeline.vertex_count = vertex_count;
pipe_run(draw, prim, vertices, stride, elts, count);
draw->pipeline.verts = NULL;
draw->pipeline.vertex_count = 0;
}
/*
* Set up macros for draw_pt_decompose.h template code.
* This code is for non-indexed rendering (no elts).
*/
#define QUAD(i0,i1,i2,i3) \
do_triangle( draw, \
( DRAW_PIPE_RESET_STIPPLE | \
DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_2 ), \
verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i1), \
verts + stride * (i3)); \
do_triangle( draw, \
( DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_1 ), \
verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i2), \
verts + stride * (i3))
#define TRIANGLE(flags,i0,i1,i2) \
do_triangle( draw, \
flags, /* flags */ \
verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i1), \
verts + stride * (i2))
#define LINE(flags,i0,i1) \
do_line( draw, \
flags, \
verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i1))
#define POINT(i0) \
do_point( draw, \
verts + stride * i0 )
#define FUNC pipe_run_linear
#define ARGS \
struct draw_context *draw, \
unsigned prim, \
struct vertex_header *vertices, \
unsigned stride
#define LOCAL_VARS \
char *verts = (char *)vertices; \
boolean flatfirst = (draw->rasterizer->flatshade && \
draw->rasterizer->flatshade_first); \
unsigned i; \
ushort flags
#define FLUSH
#include "draw_pt_decompose.h"
/*
* For drawing non-indexed primitives.
*/
void draw_pipeline_run_linear( struct draw_context *draw,
unsigned prim,
struct vertex_header *vertices,
unsigned count,
unsigned stride )
{
char *verts = (char *)vertices;
draw->pipeline.verts = verts;
draw->pipeline.vertex_stride = stride;
draw->pipeline.vertex_count = count;
pipe_run_linear(draw, prim, vertices, stride, count);
draw->pipeline.verts = NULL;
draw->pipeline.vertex_count = 0;
}
void draw_pipeline_flush( struct draw_context *draw,
unsigned flags )
{
draw->pipeline.first->flush( draw->pipeline.first, flags );
draw->pipeline.first = draw->pipeline.validate;
}
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