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/**************************************************************************
*
* Copyright 2011 Marek Olšák <maraeo@gmail.com>
* 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 AUTHORS 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.
*
**************************************************************************/
#ifndef U_VBUF_H
#define U_VBUF_H
/* This module takes care of user buffer uploads and vertex format fallbacks.
* It's designed for the drivers which don't want to use the Draw module.
* There is a more detailed description at the beginning of the .c file.
*/
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "pipe/p_format.h"
struct cso_context;
struct cso_velems_state;
struct u_vbuf;
/* Hardware vertex fetcher limitations can be described by this structure. */
struct u_vbuf_caps {
enum pipe_format format_translation[PIPE_FORMAT_COUNT];
/* Whether vertex fetches don't have to be 4-byte-aligned. */
/* TRUE if hardware supports it. */
unsigned buffer_offset_unaligned:1;
unsigned buffer_stride_unaligned:1;
unsigned velem_src_offset_unaligned:1;
/* Whether the driver supports user vertex buffers. */
unsigned user_vertex_buffers:1;
/* Maximum number of vertex buffers */
unsigned max_vertex_buffers:6;
bool fallback_always;
bool fallback_only_for_user_vbuffers;
};
void u_vbuf_get_caps(struct pipe_screen *screen, struct u_vbuf_caps *caps);
struct u_vbuf *
u_vbuf_create(struct pipe_context *pipe, struct u_vbuf_caps *caps);
void u_vbuf_destroy(struct u_vbuf *mgr);
/* State and draw functions. */
void u_vbuf_set_vertex_elements(struct u_vbuf *mgr,
const struct cso_velems_state *velems);
void u_vbuf_unset_vertex_elements(struct u_vbuf *mgr);
void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr,
unsigned start_slot, unsigned count,
const struct pipe_vertex_buffer *bufs);
void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info);
void u_vbuf_get_minmax_index(struct pipe_context *pipe,
const struct pipe_draw_info *info,
unsigned *out_min_index, unsigned *out_max_index);
/* Save/restore functionality. */
void u_vbuf_save_vertex_elements(struct u_vbuf *mgr);
void u_vbuf_restore_vertex_elements(struct u_vbuf *mgr);
void u_vbuf_save_vertex_buffer0(struct u_vbuf *mgr);
void u_vbuf_restore_vertex_buffer0(struct u_vbuf *mgr);
#endif
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