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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_MGR_H
#define U_VBUF_MGR_H
/* This module builds upon u_upload_mgr and translate_cache and takes care of
* user buffer uploads and vertex format fallbacks. It's designed
* for the drivers which don't always use the Draw module. (e.g. for HWTCL)
*/
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "util/u_transfer.h"
/* Hardware vertex fetcher limitations can be described by this structure. */
struct u_vbuf_caps {
/* Vertex format CAPs. */
/* TRUE if hardware supports it. */
unsigned format_fixed32:1; /* PIPE_FORMAT_*32*_FIXED */
unsigned format_float16:1; /* PIPE_FORMAT_*16*_FLOAT */
unsigned format_float64:1; /* PIPE_FORMAT_*64*_FLOAT */
unsigned format_norm32:1; /* PIPE_FORMAT_*32*NORM */
unsigned format_scaled32:1; /* PIPE_FORMAT_*32*SCALED */
/* Whether vertex fetches don't have to be dword-aligned. */
/* TRUE if hardware supports it. */
unsigned fetch_dword_unaligned:1;
};
/* The manager.
* This structure should also be used to access vertex buffers
* from a driver. */
struct u_vbuf {
/* This is what was set in set_vertex_buffers.
* May contain user buffers. */
struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
unsigned nr_vertex_buffers;
/* This uploader can optionally be used by the driver.
*
* Allowed functions:
* - u_upload_alloc
* - u_upload_data
* - u_upload_buffer
* - u_upload_flush */
struct u_upload_mgr *uploader;
struct u_vbuf_caps caps;
/* Vertex elements state as created by u_vbuf.
* This is used when saving the state into u_blitter, there's no other
* usage. */
void *vertex_elements;
};
struct u_vbuf_resource {
struct u_resource b;
uint8_t *user_ptr;
};
enum u_fetch_alignment {
U_VERTEX_FETCH_BYTE_ALIGNED,
U_VERTEX_FETCH_DWORD_ALIGNED
};
struct u_vbuf *
u_vbuf_create(struct pipe_context *pipe,
unsigned upload_buffer_size,
unsigned upload_buffer_alignment,
unsigned upload_buffer_bind,
enum u_fetch_alignment fetch_alignment);
void u_vbuf_destroy(struct u_vbuf *mgr);
void u_vbuf_draw_begin(struct u_vbuf *mgr,
struct pipe_draw_info *info);
unsigned u_vbuf_draw_max_vertex_count(struct u_vbuf *mgr);
void u_vbuf_draw_end(struct u_vbuf *mgr);
static INLINE struct u_vbuf_resource *u_vbuf_resource(struct pipe_resource *r)
{
return (struct u_vbuf_resource*)r;
}
#endif
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