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/*
* Copyright 2000-2001 VA Linux Systems, Inc.
* (c) Copyright IBM Corporation 2002
* 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
* on 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
* VA LINUX SYSTEM, IBM AND/OR THEIR 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.
*
* Authors:
* Ian Romanick <idr@us.ibm.com>
* Keith Whitwell <keithw@tungstengraphics.com>
* Kevin E. Martin <kem@users.sourceforge.net>
* Gareth Hughes <gareth@nvidia.com>
*/
/** \file texmem.h
* Public interface to the DRI texture memory management routines.
*
* \sa texmem.c
*/
#ifndef DRI_TEXMEM_H
#define DRI_TEXMEM_H
#include "main/mtypes.h"
#include "main/formats.h"
#include "main/mm.h"
#include "xf86drm.h"
struct dri_tex_heap;
typedef struct dri_tex_heap driTexHeap;
struct dri_texture_object;
typedef struct dri_texture_object driTextureObject;
/**
* Base texture object type. Each driver will extend this type with its own
* private data members.
*/
struct dri_texture_object {
struct dri_texture_object * next;
struct dri_texture_object * prev;
driTexHeap * heap; /**< Texture heap currently stored in */
struct gl_texture_object * tObj;/**< Pointer to Mesa texture object
* If NULL, this texture object is a
* "placeholder" object representing
* texture memory in use by another context.
* A placeholder should have a heap and a memBlock.
*/
struct mem_block *memBlock; /**< Memory block containing texture */
unsigned reserved; /**< Cannot be swapped out by user contexts. */
unsigned bound; /**< Bitmask indicating which tex units
* this texture object is bound to.
* Bit 0 = unit 0, Bit 1 = unit 1, etc
*/
unsigned totalSize; /**< Total size of the texture,
* including all mipmap levels
*/
unsigned dirty_images[6]; /**< Flags for whether or not images
* need to be uploaded to local or
* AGP texture space. One flag set
* for each cube face for cubic
* textures. Bit zero corresponds to
* the base-level, which may or may
* not be the level zero mipmap.
*/
unsigned timestamp; /**< Timestamp used to
* synchronize with 3d engine
* in hardware where textures
* are uploaded directly to
* the framebuffer.
*/
unsigned firstLevel; /**< Image in \c tObj->Image[0] that
* corresponds to the base-level of
* this texture object.
*/
unsigned lastLevel; /**< Last image in \c tObj->Image[0]
* used by the
* current LOD settings of
* this texture object. This
* value must be greater than
* or equal to \c firstLevel.
*/
};
typedef void (destroy_texture_object_t)( void * driverContext,
driTextureObject * t );
/**
* Client-private representation of texture memory state.
*
* Clients will place one or more of these structs in their driver
* context struct to manage one or more global texture heaps.
*/
struct dri_tex_heap {
/** Client-supplied heap identifier
*/
unsigned heapId;
/** Pointer to the client's private context
*/
void *driverContext;
/** Total size of the heap, in bytes
*/
unsigned size;
/** \brief \f$log_2\f$ of size of single heap region
*
* Each context takes memory from the global texture heap in
* \f$2^{logGranularity}\f$ byte blocks. The value of
* \a logGranularity is based on the amount of memory represented
* by the heap and the maximum number of regions in the SAREA. Given
* \a b bytes of texture memory an \a n regions in the SAREA,
* \a logGranularity will be \f$\lfloor\log_2( b / n )\rfloor\f$.
*/
unsigned logGranularity;
/** \brief Required alignment of allocations in this heap
*
* The alignment shift is supplied to \a mmAllocMem when memory is
* allocated from this heap. The value of \a alignmentShift will
* typically reflect some require of the hardware. This value has
* \b no \b relation to \a logGranularity. \a alignmentShift is a
* per-context value.
*
* \sa mmAllocMem
*/
unsigned alignmentShift;
/** Number of elements in global list (the SAREA).
*/
unsigned nrRegions;
/** Pointer to SAREA \a driTexRegion array
*/
drmTextureRegionPtr global_regions;
/** Pointer to the texture state age (generation number) in the SAREA
*/
unsigned * global_age;
/** Local age (generation number) of texture state
*/
unsigned local_age;
/** Memory heap used to manage texture memory represented by
* this texture heap.
*/
struct mem_block * memory_heap;
/** List of objects that we currently believe to be in texture
* memory.
*/
driTextureObject texture_objects;
/** Pointer to the list of texture objects that are not in
* texture memory.
*/
driTextureObject * swapped_objects;
/** Size of the driver-speicific texture object.
*/
unsigned texture_object_size;
/**
* \brief Function to destroy driver-specific texture object data.
*
* This function is supplied by the driver so that the texture manager
* can release all resources associated with a texture object. This
* function should only release driver-specific data. That is,
* \a driDestroyTextureObject will release the texture memory
* associated with the texture object, it will release the memory
* for the texture object itself, and it will unlink the texture
* object from the texture object lists.
*
* \param driverContext Pointer to the driver supplied context
* \param t Texture object that is to be destroyed
* \sa driDestroyTextureObject
*/
destroy_texture_object_t * destroy_texture_object;
/**
*/
unsigned * texture_swaps;
/**
* Timestamp used to synchronize with 3d engine in hardware
* where textures are uploaded directly to the
* framebuffer.
*/
unsigned timestamp;
/** \brief Kick/upload weight
*
* When not enough free space is available this weight
* influences the choice of the heap from which textures are
* kicked. By default the weight is equal to the heap size.
*/
double weight;
/** \brief Kick/upload duty
*
* The heap with the highest duty will be chosen for kicking
* textures if not enough free space is available. The duty is
* reduced by the amount of data kicked. Rebalancing of
* negative duties takes the weights into account.
*/
int duty;
};
/**
* Called by the client on lock contention to determine whether textures have
* been stolen. If another client has modified a region in which we have
* textures, then we need to figure out which of our textures have been
* removed and update our global LRU.
*
* \param heap Texture heap to be updated
* \hideinitializer
*/
#define DRI_AGE_TEXTURES( heap ) \
do { \
if ( ((heap) != NULL) \
&& ((heap)->local_age != (heap)->global_age[0]) ) \
driAgeTextures( heap ); \
} while( 0 )
/* This should be called whenever there has been contention on the hardware
* lock. driAgeTextures should not be called directly. Instead, clients
* should use DRI_AGE_TEXTURES, above.
*/
void driAgeTextures( driTexHeap * heap );
void driUpdateTextureLRU( driTextureObject * t );
void driSwapOutTextureObject( driTextureObject * t );
void driDestroyTextureObject( driTextureObject * t );
int driAllocateTexture( driTexHeap * const * heap_array, unsigned nr_heaps,
driTextureObject * t );
GLboolean driIsTextureResident( GLcontext * ctx,
struct gl_texture_object * texObj );
driTexHeap * driCreateTextureHeap( unsigned heap_id, void * context,
unsigned size, unsigned alignmentShift, unsigned nr_regions,
drmTextureRegionPtr global_regions, unsigned * global_age,
driTextureObject * swapped_objects, unsigned texture_object_size,
destroy_texture_object_t * destroy_tex_obj );
void driDestroyTextureHeap( driTexHeap * heap );
void
driCalculateMaxTextureLevels( driTexHeap * const * heaps,
unsigned nr_heaps,
struct gl_constants * limits,
unsigned max_bytes_per_texel,
unsigned max_2D_size,
unsigned max_3D_size,
unsigned max_cube_size,
unsigned max_rect_size,
unsigned mipmaps_at_once,
int all_textures_one_heap,
int allow_larger_textures );
void
driSetTextureSwapCounterLocation( driTexHeap * heap, unsigned * counter );
#define DRI_TEXMGR_DO_TEXTURE_1D 0x0001
#define DRI_TEXMGR_DO_TEXTURE_2D 0x0002
#define DRI_TEXMGR_DO_TEXTURE_3D 0x0004
#define DRI_TEXMGR_DO_TEXTURE_CUBE 0x0008
#define DRI_TEXMGR_DO_TEXTURE_RECT 0x0010
void driInitTextureObjects( GLcontext *ctx, driTextureObject * swapped,
GLuint targets );
GLboolean driValidateTextureHeaps( driTexHeap * const * texture_heaps,
unsigned nr_heaps, const driTextureObject * swapped );
extern void driCalculateTextureFirstLastLevel( driTextureObject * t );
extern gl_format _dri_texformat_rgba8888;
extern gl_format _dri_texformat_argb8888;
extern gl_format _dri_texformat_rgb565;
extern gl_format _dri_texformat_argb4444;
extern gl_format _dri_texformat_argb1555;
extern gl_format _dri_texformat_al88;
extern gl_format _dri_texformat_a8;
extern gl_format _dri_texformat_ci8;
extern gl_format _dri_texformat_i8;
extern gl_format _dri_texformat_l8;
extern void driInitTextureFormats( void );
#endif /* DRI_TEXMEM_H */
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