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/**************************************************************************
*
* Copyright 2008 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.
*
**************************************************************************/
#include "pipe/p_util.h"
#include "draw/draw_context.h"
#include "draw/draw_private.h"
#include "draw/draw_pt.h"
#define FETCH_MAX 256
#define DRAW_MAX (16*FETCH_MAX)
struct varray_frontend {
struct draw_pt_front_end base;
struct draw_context *draw;
ushort draw_elts[DRAW_MAX];
unsigned fetch_elts[FETCH_MAX];
unsigned draw_count;
unsigned fetch_count;
struct draw_pt_middle_end *middle;
unsigned input_prim;
unsigned output_prim;
};
static void varray_flush(struct varray_frontend *varray)
{
if (varray->draw_count) {
#if 0
debug_printf("FLUSH fc = %d, dc = %d\n",
varray->fetch_count,
varray->draw_count);
#endif
varray->middle->run(varray->middle,
varray->fetch_elts,
varray->fetch_count,
varray->draw_elts,
varray->draw_count);
}
varray->fetch_count = 0;
varray->draw_count = 0;
}
#if 0
static void varray_check_flush(struct varray_frontend *varray)
{
if (varray->draw_count + 6 >= DRAW_MAX/* ||
varray->fetch_count + 4 >= FETCH_MAX*/) {
varray_flush(varray);
}
}
#endif
static INLINE void add_draw_el(struct varray_frontend *varray,
int idx, ushort flags)
{
varray->draw_elts[varray->draw_count++] = idx | flags;
}
static INLINE void varray_triangle( struct varray_frontend *varray,
unsigned i0,
unsigned i1,
unsigned i2 )
{
add_draw_el(varray, i0, 0);
add_draw_el(varray, i1, 0);
add_draw_el(varray, i2, 0);
}
static INLINE void varray_triangle_flags( struct varray_frontend *varray,
ushort flags,
unsigned i0,
unsigned i1,
unsigned i2 )
{
add_draw_el(varray, i0, flags);
add_draw_el(varray, i1, 0);
add_draw_el(varray, i2, 0);
}
static INLINE void varray_line( struct varray_frontend *varray,
unsigned i0,
unsigned i1 )
{
add_draw_el(varray, i0, 0);
add_draw_el(varray, i1, 0);
}
static INLINE void varray_line_flags( struct varray_frontend *varray,
ushort flags,
unsigned i0,
unsigned i1 )
{
add_draw_el(varray, i0, flags);
add_draw_el(varray, i1, 0);
}
static INLINE void varray_point( struct varray_frontend *varray,
unsigned i0 )
{
add_draw_el(varray, i0, 0);
}
static INLINE void varray_quad( struct varray_frontend *varray,
unsigned i0,
unsigned i1,
unsigned i2,
unsigned i3 )
{
varray_triangle( varray, i0, i1, i3 );
varray_triangle( varray, i1, i2, i3 );
}
static INLINE void varray_ef_quad( struct varray_frontend *varray,
unsigned i0,
unsigned i1,
unsigned i2,
unsigned i3 )
{
const unsigned omitEdge1 = DRAW_PIPE_EDGE_FLAG_0 | DRAW_PIPE_EDGE_FLAG_2;
const unsigned omitEdge2 = DRAW_PIPE_EDGE_FLAG_0 | DRAW_PIPE_EDGE_FLAG_1;
varray_triangle_flags( varray,
DRAW_PIPE_RESET_STIPPLE | omitEdge1,
i0, i1, i3 );
varray_triangle_flags( varray,
omitEdge2,
i1, i2, i3 );
}
/* At least for now, we're back to using a template include file for
* this. The two paths aren't too different though - it may be
* possible to reunify them.
*/
#define TRIANGLE(vc,flags,i0,i1,i2) varray_triangle_flags(vc,flags,i0,i1,i2)
#define QUAD(vc,i0,i1,i2,i3) varray_ef_quad(vc,i0,i1,i2,i3)
#define LINE(vc,flags,i0,i1) varray_line_flags(vc,flags,i0,i1)
#define POINT(vc,i0) varray_point(vc,i0)
#define FUNC varray_run_extras
#include "draw_pt_varray_tmp.h"
#define TRIANGLE(vc,flags,i0,i1,i2) varray_triangle(vc,i0,i1,i2)
#define QUAD(vc,i0,i1,i2,i3) varray_quad(vc,i0,i1,i2,i3)
#define LINE(vc,flags,i0,i1) varray_line(vc,i0,i1)
#define POINT(vc,i0) varray_point(vc,i0)
#define FUNC varray_run
#include "draw_pt_varray_tmp.h"
static unsigned reduced_prim[PIPE_PRIM_POLYGON + 1] = {
PIPE_PRIM_POINTS,
PIPE_PRIM_LINES,
PIPE_PRIM_LINES,
PIPE_PRIM_LINES,
PIPE_PRIM_TRIANGLES,
PIPE_PRIM_TRIANGLES,
PIPE_PRIM_TRIANGLES,
PIPE_PRIM_TRIANGLES,
PIPE_PRIM_TRIANGLES,
PIPE_PRIM_TRIANGLES
};
static void varray_prepare(struct draw_pt_front_end *frontend,
unsigned prim,
struct draw_pt_middle_end *middle,
unsigned opt)
{
struct varray_frontend *varray = (struct varray_frontend *)frontend;
const struct pipe_rasterizer_state *rasterizer = varray->draw->rasterizer;
if (rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL ||
rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL ||
rasterizer->line_stipple_enable)
{
assert(opt & PT_PIPELINE);
varray->base.run = varray_run_extras;
} else {
varray->base.run = varray_run;
}
varray->input_prim = prim;
varray->output_prim = reduced_prim[prim];
varray->middle = middle;
middle->prepare(middle, varray->output_prim, opt);
}
static void varray_finish(struct draw_pt_front_end *frontend)
{
struct varray_frontend *varray = (struct varray_frontend *)frontend;
varray->middle->finish(varray->middle);
varray->middle = NULL;
}
static void varray_destroy(struct draw_pt_front_end *frontend)
{
FREE(frontend);
}
struct draw_pt_front_end *draw_pt_varray(struct draw_context *draw)
{
struct varray_frontend *varray = CALLOC_STRUCT(varray_frontend);
if (varray == NULL)
return NULL;
varray->base.prepare = varray_prepare;
varray->base.run = NULL;
varray->base.finish = varray_finish;
varray->base.destroy = varray_destroy;
varray->draw = draw;
return &varray->base;
}
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