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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;
unsigned fetch_start;
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);
debug_printf("\telt0 = %d, eltx = %d, draw0 = %d, drawx = %d\n",
varray->fetch_elts[0],
varray->fetch_elts[varray->fetch_count-1],
varray->draw_elts[0],
varray->draw_elts[varray->draw_count-1]);
#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;
}
static void varray_flush_linear(struct varray_frontend *varray,
unsigned start, unsigned count)
{
if (count) {
#if 0
debug_printf("FLUSH LINEAR start = %d, count = %d\n",
start,
count);
#endif
assert(varray->middle->run_linear);
varray->middle->run_linear(varray->middle, start, count);
}
}
static INLINE void fetch_init(struct varray_frontend *varray,
unsigned count)
{
unsigned idx;
#if 0
debug_printf("FETCH INIT c = %d, fs = %d\n",
count,
varray->fetch_start);
#endif
for (idx = 0; idx < count; ++idx) {
varray->fetch_elts[idx] = varray->fetch_start + idx;
}
varray->fetch_start += idx;
varray->fetch_count = idx;
}
static INLINE void add_draw_el(struct varray_frontend *varray,
int idx)
{
varray->draw_elts[varray->draw_count++] = idx;
}
static INLINE void varray_triangle( struct varray_frontend *varray,
unsigned i0,
unsigned i1,
unsigned i2 )
{
add_draw_el(varray, i0);
add_draw_el(varray, i1);
add_draw_el(varray, i2);
}
static INLINE void varray_line( struct varray_frontend *varray,
unsigned i0,
unsigned i1 )
{
add_draw_el(varray, i0);
add_draw_el(varray, i1);
}
static INLINE void varray_point( struct varray_frontend *varray,
unsigned i0 )
{
add_draw_el(varray, i0);
}
#if 0
#define TRIANGLE(flags,i0,i1,i2) varray_triangle(varray,i0,i1,i2)
#define LINE(flags,i0,i1) varray_line(varray,i0,i1)
#define POINT(i0) varray_point(varray,i0)
#define FUNC varray_decompose
#include "draw_pt_decompose.h"
#else
#define TRIANGLE(vc,i0,i1,i2) varray_triangle(vc,i0,i1,i2)
#define LINE(vc,i0,i1) varray_line(vc,i0,i1)
#define POINT(vc,i0) varray_point(vc,i0)
#define FUNC varray_run
#include "draw_pt_varray_tmp_linear.h"
#endif
static unsigned decompose_prim[PIPE_PRIM_POLYGON + 1] = {
PIPE_PRIM_POINTS,
PIPE_PRIM_LINES,
PIPE_PRIM_LINES, /* decomposed LINELOOP */
PIPE_PRIM_LINE_STRIP,
PIPE_PRIM_TRIANGLES,
PIPE_PRIM_TRIANGLE_STRIP,
PIPE_PRIM_TRIANGLES, /* decomposed TRI_FAN */
PIPE_PRIM_QUADS,
PIPE_PRIM_QUAD_STRIP,
PIPE_PRIM_TRIANGLES /* decomposed POLYGON */
};
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;
varray->base.run = varray_run;
varray->input_prim = prim;
varray->output_prim = decompose_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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