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/**************************************************************************
*
* Copyright 2006 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 INTEL_REGIONS_H
#define INTEL_REGIONS_H
#include "mtypes.h"
#include "intel_screen.h"
struct intel_context;
struct intel_buffer_object;
/**
* A layer on top of the bufmgr buffers that adds a few useful things:
*
* - Refcounting for local buffer references.
* - Refcounting for buffer maps
* - Buffer dimensions - pitch and height.
* - Blitter commands for copying 2D regions between buffers. (really???)
*/
struct intel_region
{
struct _DriBufferObject *buffer; /**< buffer manager's buffer ID */
GLuint refcount; /**< Reference count for region */
GLuint cpp; /**< bytes per pixel */
GLuint pitch; /**< in pixels */
GLuint height; /**< in pixels */
GLubyte *map; /**< only non-NULL when region is actually mapped */
GLuint map_refcount; /**< Reference count for mapping */
GLuint draw_offset; /**< Offset of drawing address within the region */
struct intel_buffer_object *pbo; /* zero-copy uploads */
};
/* Allocate a refcounted region. Pointers to regions should only be
* copied by calling intel_reference_region().
*/
struct intel_region *intel_region_alloc(intelScreenPrivate *intelScreen,
GLuint cpp,
GLuint pitch, GLuint height);
void intel_region_reference(struct intel_region **dst,
struct intel_region *src);
void intel_region_release(struct intel_region **ib);
extern struct intel_region
*intel_region_create_static(intelScreenPrivate *intelScreen,
GLuint mem_type,
GLuint offset,
void *virtual,
GLuint cpp,
GLuint pitch, GLuint height);
extern void
intel_region_update_static(intelScreenPrivate *intelScreen,
struct intel_region *region,
GLuint mem_type,
GLuint offset,
void *virtual,
GLuint cpp, GLuint pitch, GLuint height);
void intel_region_idle(intelScreenPrivate *intelScreen,
struct intel_region *ib);
/* Map/unmap regions. This is refcounted also:
*/
GLubyte *intel_region_map(intelScreenPrivate *intelScreen,
struct intel_region *ib);
void intel_region_unmap(intelScreenPrivate *intelScreen, struct intel_region *ib);
/* Upload data to a rectangular sub-region
*/
void intel_region_data(intelScreenPrivate *intelScreen,
struct intel_region *dest,
GLuint dest_offset,
GLuint destx, GLuint desty,
void *src, GLuint src_stride,
GLuint srcx, GLuint srcy, GLuint width, GLuint height);
/* Copy rectangular sub-regions
*/
void intel_region_copy(intelScreenPrivate *intelScreen,
struct intel_region *dest,
GLuint dest_offset,
GLuint destx, GLuint desty,
struct intel_region *src,
GLuint src_offset,
GLuint srcx, GLuint srcy, GLuint width, GLuint height);
/* Fill a rectangular sub-region
*/
void intel_region_fill(intelScreenPrivate *intelScreen,
struct intel_region *dest,
GLuint dest_offset,
GLuint destx, GLuint desty,
GLuint width, GLuint height, GLuint color);
/* Helpers for zerocopy uploads, particularly texture image uploads:
*/
void intel_region_attach_pbo(intelScreenPrivate *intelScreen,
struct intel_region *region,
struct intel_buffer_object *pbo);
void intel_region_release_pbo(intelScreenPrivate *intelScreen,
struct intel_region *region);
void intel_region_cow(intelScreenPrivate *intelScreen,
struct intel_region *region);
struct _DriBufferObject *intel_region_buffer(intelScreenPrivate *intelScreen,
struct intel_region *region,
GLuint flag);
#endif
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