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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.
*
**************************************************************************/
/**
* \brief Last stage of 'draw' pipeline: send tris to SPUs.
* \author Brian Paul
*/
#include "cell_context.h"
#include "cell_render.h"
#include "cell_spu.h"
#include "pipe/p_util.h"
#include "draw/draw_private.h"
struct render_stage {
struct draw_stage stage; /**< This must be first (base class) */
struct cell_context *cell;
};
static INLINE struct render_stage *
render_stage(struct draw_stage *stage)
{
return (struct render_stage *) stage;
}
static void render_begin( struct draw_stage *stage )
{
#if 0
struct render_stage *render = render_stage(stage);
struct cell_context *sp = render->cell;
const struct pipe_shader_state *fs = &render->cell->fs->shader;
render->quad.nr_attrs = render->cell->nr_frag_attrs;
render->firstFpInput = fs->input_semantic_name[0];
sp->quad.first->begin(sp->quad.first);
#endif
}
static void render_end( struct draw_stage *stage )
{
}
static void reset_stipple_counter( struct draw_stage *stage )
{
struct render_stage *render = render_stage(stage);
/*render->cell->line_stipple_counter = 0;*/
}
static void
render_point(struct draw_stage *stage, struct prim_header *prim)
{
}
static void
render_line(struct draw_stage *stage, struct prim_header *prim)
{
}
/** Write a vertex into the prim buffer */
static void
save_vertex(struct cell_prim_buffer *buf, uint pos,
const struct vertex_header *vert)
{
uint attr, j;
for (attr = 0; attr < 2; attr++) {
for (j = 0; j < 4; j++) {
buf->vertex[pos][attr][j] = vert->data[attr][j];
}
}
/* update bounding box */
if (vert->data[0][0] < buf->xmin)
buf->xmin = vert->data[0][0];
if (vert->data[0][0] > buf->xmax)
buf->xmax = vert->data[0][0];
if (vert->data[0][1] < buf->ymin)
buf->ymin = vert->data[0][1];
if (vert->data[0][1] > buf->ymax)
buf->ymax = vert->data[0][1];
}
static void
render_tri(struct draw_stage *stage, struct prim_header *prim)
{
struct render_stage *rs = render_stage(stage);
struct cell_context *cell = rs->cell;
struct cell_prim_buffer *buf = &cell->prim_buffer;
uint i;
if (buf->num_verts + 3 > CELL_MAX_VERTS) {
cell_flush_prim_buffer(cell);
}
i = buf->num_verts;
assert(i+2 <= CELL_MAX_VERTS);
save_vertex(buf, i+0, prim->v[0]);
save_vertex(buf, i+1, prim->v[1]);
save_vertex(buf, i+2, prim->v[2]);
buf->num_verts += 3;
}
/**
* Send the a RENDER command to all SPUs to have them render the prims
* in the current prim_buffer.
*/
void
cell_flush_prim_buffer(struct cell_context *cell)
{
uint i;
if (cell->prim_buffer.num_verts == 0)
return;
for (i = 0; i < cell->num_spus; i++) {
struct cell_command_render *render = &cell_global.command[i].render;
render->prim_type = PIPE_PRIM_TRIANGLES;
render->num_verts = cell->prim_buffer.num_verts;
render->vertex_size = cell->vertex_info->size * 4;
render->xmin = cell->prim_buffer.xmin;
render->ymin = cell->prim_buffer.ymin;
render->xmax = cell->prim_buffer.xmax;
render->ymax = cell->prim_buffer.ymax;
render->vertex_data = &cell->prim_buffer.vertex;
ASSERT_ALIGN16(render->vertex_data);
send_mbox_message(cell_global.spe_contexts[i], CELL_CMD_RENDER);
}
cell->prim_buffer.num_verts = 0;
cell->prim_buffer.xmin = 1e100;
cell->prim_buffer.ymin = 1e100;
cell->prim_buffer.xmax = -1e100;
cell->prim_buffer.ymax = -1e100;
/* XXX temporary, need to double-buffer the prim buffer until we get
* a real command buffer/list system.
*/
cell_flush(&cell->pipe, 0x0);
}
static void render_destroy( struct draw_stage *stage )
{
FREE( stage );
}
/**
* Create a new draw/render stage. This will be plugged into the
* draw module as the last pipeline stage.
*/
struct draw_stage *cell_draw_render_stage( struct cell_context *cell )
{
struct render_stage *render = CALLOC_STRUCT(render_stage);
render->cell = cell;
render->stage.draw = cell->draw;
render->stage.begin = render_begin;
render->stage.point = render_point;
render->stage.line = render_line;
render->stage.tri = render_tri;
render->stage.end = render_end;
render->stage.reset_stipple_counter = reset_stipple_counter;
render->stage.destroy = render_destroy;
/*
render->quad.coef = render->coef;
render->quad.posCoef = &render->posCoef;
*/
return &render->stage;
}
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