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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.
*
**************************************************************************/
#ifndef P_INLINES_H
#define P_INLINES_H
#include "p_context.h"
#include "p_defines.h"
#include "p_screen.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Convenience wrappers for screen buffer functions.
*/
static INLINE struct pipe_buffer *
pipe_buffer_create( struct pipe_screen *screen,
unsigned alignment, unsigned usage, unsigned size )
{
return screen->buffer_create(screen, alignment, usage, size);
}
static INLINE struct pipe_buffer *
pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size )
{
return screen->user_buffer_create(screen, ptr, size);
}
static INLINE void *
pipe_buffer_map(struct pipe_screen *screen,
struct pipe_buffer *buf,
unsigned usage)
{
if(screen->buffer_map_range) {
unsigned offset = 0;
unsigned length = buf->size;
/* XXX: Actually we should be using/detecting DISCARD
* instead of assuming that WRITE implies discard */
if((usage & PIPE_BUFFER_USAGE_CPU_WRITE) &&
!(usage & PIPE_BUFFER_USAGE_DISCARD))
usage |= PIPE_BUFFER_USAGE_CPU_READ;
return screen->buffer_map_range(screen, buf, offset, length, usage);
}
else
return screen->buffer_map(screen, buf, usage);
}
static INLINE void
pipe_buffer_unmap(struct pipe_screen *screen,
struct pipe_buffer *buf)
{
screen->buffer_unmap(screen, buf);
}
static INLINE void *
pipe_buffer_map_range(struct pipe_screen *screen,
struct pipe_buffer *buf,
unsigned offset,
unsigned length,
unsigned usage)
{
assert(offset < buf->size);
assert(offset + length <= buf->size);
assert(length);
if(screen->buffer_map_range)
return screen->buffer_map_range(screen, buf, offset, length, usage);
else
return screen->buffer_map(screen, buf, usage);
}
static INLINE void
pipe_buffer_flush_mapped_range(struct pipe_screen *screen,
struct pipe_buffer *buf,
unsigned offset,
unsigned length)
{
assert(offset < buf->size);
assert(offset + length <= buf->size);
assert(length);
if(screen->buffer_flush_mapped_range)
screen->buffer_flush_mapped_range(screen, buf, offset, length);
}
static INLINE void
pipe_buffer_write(struct pipe_screen *screen,
struct pipe_buffer *buf,
unsigned offset, unsigned size,
const void *data)
{
uint8_t *map;
assert(offset < buf->size);
assert(offset + size <= buf->size);
assert(size);
map = pipe_buffer_map_range(screen, buf, offset, size,
PIPE_BUFFER_USAGE_CPU_WRITE |
PIPE_BUFFER_USAGE_FLUSH_EXPLICIT);
assert(map);
if(map) {
memcpy(map + offset, data, size);
pipe_buffer_flush_mapped_range(screen, buf, offset, size);
pipe_buffer_unmap(screen, buf);
}
}
static INLINE void
pipe_buffer_read(struct pipe_screen *screen,
struct pipe_buffer *buf,
unsigned offset, unsigned size,
void *data)
{
uint8_t *map;
assert(offset < buf->size);
assert(offset + size <= buf->size);
assert(size);
map = pipe_buffer_map_range(screen, buf, offset, size, PIPE_BUFFER_USAGE_CPU_READ);
assert(map);
if(map) {
memcpy(data, map + offset, size);
pipe_buffer_unmap(screen, buf);
}
}
#ifdef __cplusplus
}
#endif
#endif /* P_INLINES_H */
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