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      1 /**************************************************************************
      2  *
      3  * Copyright 2007 VMware, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 #ifndef LP_TEXTURE_H
     29 #define LP_TEXTURE_H
     30 
     31 
     32 #include "pipe/p_state.h"
     33 #include "util/u_debug.h"
     34 #include "lp_limits.h"
     35 
     36 
     37 enum lp_texture_usage
     38 {
     39    LP_TEX_USAGE_READ = 100,
     40    LP_TEX_USAGE_READ_WRITE,
     41    LP_TEX_USAGE_WRITE_ALL
     42 };
     43 
     44 
     45 struct pipe_context;
     46 struct pipe_screen;
     47 struct llvmpipe_context;
     48 
     49 struct sw_displaytarget;
     50 
     51 
     52 /**
     53  * llvmpipe subclass of pipe_resource.  A texture, drawing surface,
     54  * vertex buffer, const buffer, etc.
     55  * Textures are stored differently than other types of objects such as
     56  * vertex buffers and const buffers.
     57  * The latter are simple malloc'd blocks of memory.
     58  */
     59 struct llvmpipe_resource
     60 {
     61    struct pipe_resource base;
     62 
     63    /** Row stride in bytes */
     64    unsigned row_stride[LP_MAX_TEXTURE_LEVELS];
     65    /** Image stride (for cube maps, array or 3D textures) in bytes */
     66    unsigned img_stride[LP_MAX_TEXTURE_LEVELS];
     67    /** Offset to start of mipmap level, in bytes */
     68    unsigned mip_offsets[LP_MAX_TEXTURE_LEVELS];
     69    /** allocated total size (for non-display target texture resources only) */
     70    unsigned total_alloc_size;
     71 
     72    /**
     73     * Display target, for textures with the PIPE_BIND_DISPLAY_TARGET
     74     * usage.
     75     */
     76    struct sw_displaytarget *dt;
     77 
     78    /**
     79     * Malloc'ed data for regular textures, or a mapping to dt above.
     80     */
     81    void *tex_data;
     82 
     83    /**
     84     * Data for non-texture resources.
     85     */
     86    void *data;
     87 
     88    boolean userBuffer;  /** Is this a user-space buffer? */
     89    unsigned timestamp;
     90 
     91    unsigned id;  /**< temporary, for debugging */
     92 
     93 #ifdef DEBUG
     94    /** for linked list */
     95    struct llvmpipe_resource *prev, *next;
     96 #endif
     97 };
     98 
     99 
    100 struct llvmpipe_transfer
    101 {
    102    struct pipe_transfer base;
    103 
    104    unsigned long offset;
    105 };
    106 
    107 
    108 /** cast wrappers */
    109 static inline struct llvmpipe_resource *
    110 llvmpipe_resource(struct pipe_resource *pt)
    111 {
    112    return (struct llvmpipe_resource *) pt;
    113 }
    114 
    115 
    116 static inline const struct llvmpipe_resource *
    117 llvmpipe_resource_const(const struct pipe_resource *pt)
    118 {
    119    return (const struct llvmpipe_resource *) pt;
    120 }
    121 
    122 
    123 static inline struct llvmpipe_transfer *
    124 llvmpipe_transfer(struct pipe_transfer *pt)
    125 {
    126    return (struct llvmpipe_transfer *) pt;
    127 }
    128 
    129 
    130 void llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen);
    131 void llvmpipe_init_context_resource_funcs(struct pipe_context *pipe);
    132 
    133 
    134 static inline boolean
    135 llvmpipe_resource_is_texture(const struct pipe_resource *resource)
    136 {
    137    switch (resource->target) {
    138    case PIPE_BUFFER:
    139       return FALSE;
    140    case PIPE_TEXTURE_1D:
    141    case PIPE_TEXTURE_1D_ARRAY:
    142    case PIPE_TEXTURE_2D:
    143    case PIPE_TEXTURE_2D_ARRAY:
    144    case PIPE_TEXTURE_RECT:
    145    case PIPE_TEXTURE_3D:
    146    case PIPE_TEXTURE_CUBE:
    147    case PIPE_TEXTURE_CUBE_ARRAY:
    148       return TRUE;
    149    default:
    150       assert(0);
    151       return FALSE;
    152    }
    153 }
    154 
    155 
    156 static inline boolean
    157 llvmpipe_resource_is_1d(const struct pipe_resource *resource)
    158 {
    159    switch (resource->target) {
    160    case PIPE_BUFFER:
    161    case PIPE_TEXTURE_1D:
    162    case PIPE_TEXTURE_1D_ARRAY:
    163       return TRUE;
    164    case PIPE_TEXTURE_2D:
    165    case PIPE_TEXTURE_2D_ARRAY:
    166    case PIPE_TEXTURE_RECT:
    167    case PIPE_TEXTURE_3D:
    168    case PIPE_TEXTURE_CUBE:
    169    case PIPE_TEXTURE_CUBE_ARRAY:
    170       return FALSE;
    171    default:
    172       assert(0);
    173       return FALSE;
    174    }
    175 }
    176 
    177 
    178 static inline unsigned
    179 llvmpipe_layer_stride(struct pipe_resource *resource,
    180                       unsigned level)
    181 {
    182    struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
    183    assert(level < LP_MAX_TEXTURE_2D_LEVELS);
    184    return lpr->img_stride[level];
    185 }
    186 
    187 
    188 static inline unsigned
    189 llvmpipe_resource_stride(struct pipe_resource *resource,
    190                          unsigned level)
    191 {
    192    struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
    193    assert(level < LP_MAX_TEXTURE_2D_LEVELS);
    194    return lpr->row_stride[level];
    195 }
    196 
    197 
    198 void *
    199 llvmpipe_resource_map(struct pipe_resource *resource,
    200                       unsigned level,
    201                       unsigned layer,
    202                       enum lp_texture_usage tex_usage);
    203 
    204 void
    205 llvmpipe_resource_unmap(struct pipe_resource *resource,
    206                         unsigned level,
    207                         unsigned layer);
    208 
    209 
    210 void *
    211 llvmpipe_resource_data(struct pipe_resource *resource);
    212 
    213 
    214 unsigned
    215 llvmpipe_resource_size(const struct pipe_resource *resource);
    216 
    217 
    218 ubyte *
    219 llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpr,
    220                                    unsigned face_slice, unsigned level);
    221 
    222 
    223 extern void
    224 llvmpipe_print_resources(void);
    225 
    226 
    227 #define LP_UNREFERENCED         0
    228 #define LP_REFERENCED_FOR_READ  (1 << 0)
    229 #define LP_REFERENCED_FOR_WRITE (1 << 1)
    230 
    231 unsigned int
    232 llvmpipe_is_resource_referenced( struct pipe_context *pipe,
    233                                  struct pipe_resource *presource,
    234                                  unsigned level);
    235 
    236 unsigned
    237 llvmpipe_get_format_alignment(enum pipe_format format);
    238 
    239 #endif /* LP_TEXTURE_H */
    240