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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.
*
**************************************************************************/
/* Author:
* Brian Paul
* Keith Whitwell
*/
#include "pipe/p_defines.h"
#include "pipe/p_context.h"
#include "util/u_inlines.h"
#include "util/u_prim.h"
#include "sp_context.h"
#include "sp_query.h"
#include "sp_state.h"
#include "sp_texture.h"
#include "draw/draw_context.h"
void
softpipe_draw_stream_output(struct pipe_context *pipe, unsigned mode)
{
struct softpipe_context *sp = softpipe_context(pipe);
struct draw_context *draw = sp->draw;
const unsigned start = 0;
const unsigned count = sp->so_target.so_count[0];
void *buf = sp->so_target.buffer[0]->data;
int offset = sp->so_target.offset[0];
if (!softpipe_check_render_cond(sp) ||
sp->so_target.num_buffers != 1)
return;
sp->reduced_api_prim = u_reduced_prim(mode);
if (sp->dirty) {
softpipe_update_derived(sp);
}
softpipe_map_transfers(sp);
/* Map so buffers */
if (offset < 0) /* we were appending so start from beginning */
offset = 0;
buf = (void*)((int32_t*)buf + offset);
draw_set_mapped_vertex_buffer(draw, 0, buf);
draw_set_mapped_index_buffer(draw, NULL);
/* draw! */
draw_arrays(draw, mode, start, count);
/* unmap vertex/index buffers - will cause draw module to flush */
draw_set_mapped_vertex_buffer(draw, 0, NULL);
/*
* TODO: Flush only when a user vertex/index buffer is present
* (or even better, modify draw module to do this
* internally when this condition is seen?)
*/
draw_flush(draw);
/* Note: leave drawing surfaces mapped */
sp->dirty_render_cache = TRUE;
}
/**
* This function handles drawing indexed and non-indexed prims,
* instanced and non-instanced drawing, with or without min/max element
* indexes.
* All the other drawing functions are expressed in terms of this
* function.
*
* For non-indexed prims, indexBuffer should be NULL.
* For non-instanced drawing, instanceCount should be 1.
* When the min/max element indexes aren't known, minIndex should be 0
* and maxIndex should be ~0.
*/
void
softpipe_draw_vbo(struct pipe_context *pipe,
const struct pipe_draw_info *info)
{
struct softpipe_context *sp = softpipe_context(pipe);
struct draw_context *draw = sp->draw;
void *mapped_indices = NULL;
unsigned i;
if (!softpipe_check_render_cond(sp))
return;
sp->reduced_api_prim = u_reduced_prim(info->mode);
if (sp->dirty) {
softpipe_update_derived(sp);
}
softpipe_map_transfers(sp);
/* Map vertex buffers */
for (i = 0; i < sp->num_vertex_buffers; i++) {
void *buf = softpipe_resource(sp->vertex_buffer[i].buffer)->data;
draw_set_mapped_vertex_buffer(draw, i, buf);
}
/* Map index buffer, if present */
if (info->indexed && sp->index_buffer.buffer)
mapped_indices = softpipe_resource(sp->index_buffer.buffer)->data;
draw_set_mapped_index_buffer(draw, mapped_indices);
/* draw! */
draw_vbo(draw, info);
/* unmap vertex/index buffers - will cause draw module to flush */
for (i = 0; i < sp->num_vertex_buffers; i++) {
draw_set_mapped_vertex_buffer(draw, i, NULL);
}
if (mapped_indices) {
draw_set_mapped_index_buffer(draw, NULL);
}
/*
* TODO: Flush only when a user vertex/index buffer is present
* (or even better, modify draw module to do this
* internally when this condition is seen?)
*/
draw_flush(draw);
/* Note: leave drawing surfaces mapped */
sp->dirty_render_cache = TRUE;
}
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