src/gallium/drivers/llvmpipe/lp_texture.h

   1 /**************************************************************************
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   3  * Copyright 2007 VMware, Inc.
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  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    unsigned sample_stride;
  94 #ifdef DEBUG
  95    /** for linked list */
  96    struct llvmpipe_resource *prev, *next;
  97 #endif
  98 };
  99
 100
 101 struct llvmpipe_transfer
 102 {
 103    struct pipe_transfer base;
 104
 105    unsigned long offset;
 106 };
 107
 108
 109 /** cast wrappers */
 110 static inline struct llvmpipe_resource *
 111 llvmpipe_resource(struct pipe_resource *pt)
 112 {
 113    return (struct llvmpipe_resource *) pt;
 114 }
 115
 116
 117 static inline const struct llvmpipe_resource *
 118 llvmpipe_resource_const(const struct pipe_resource *pt)
 119 {
 120    return (const struct llvmpipe_resource *) pt;
 121 }
 122
 123
 124 static inline struct llvmpipe_transfer *
 125 llvmpipe_transfer(struct pipe_transfer *pt)
 126 {
 127    return (struct llvmpipe_transfer *) pt;
 128 }
 129
 130
 131 void llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen);
 132 void llvmpipe_init_context_resource_funcs(struct pipe_context *pipe);
 133
 134
 135 static inline boolean
 136 llvmpipe_resource_is_texture(const struct pipe_resource *resource)
 137 {
 138    switch (resource->target) {
 139    case PIPE_BUFFER:
 140       return FALSE;
 141    case PIPE_TEXTURE_1D:
 142    case PIPE_TEXTURE_1D_ARRAY:
 143    case PIPE_TEXTURE_2D:
 144    case PIPE_TEXTURE_2D_ARRAY:
 145    case PIPE_TEXTURE_RECT:
 146    case PIPE_TEXTURE_3D:
 147    case PIPE_TEXTURE_CUBE:
 148    case PIPE_TEXTURE_CUBE_ARRAY:
 149       return TRUE;
 150    default:
 151       assert(0);
 152       return FALSE;
 153    }
 154 }
 155
 156
 157 static inline boolean
 158 llvmpipe_resource_is_1d(const struct pipe_resource *resource)
 159 {
 160    switch (resource->target) {
 161    case PIPE_BUFFER:
 162    case PIPE_TEXTURE_1D:
 163    case PIPE_TEXTURE_1D_ARRAY:
 164       return TRUE;
 165    case PIPE_TEXTURE_2D:
 166    case PIPE_TEXTURE_2D_ARRAY:
 167    case PIPE_TEXTURE_RECT:
 168    case PIPE_TEXTURE_3D:
 169    case PIPE_TEXTURE_CUBE:
 170    case PIPE_TEXTURE_CUBE_ARRAY:
 171       return FALSE;
 172    default:
 173       assert(0);
 174       return FALSE;
 175    }
 176 }
 177
 178
 179 static inline unsigned
 180 llvmpipe_layer_stride(struct pipe_resource *resource,
 181                       unsigned level)
 182 {
 183    struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
 184    assert(level < LP_MAX_TEXTURE_2D_LEVELS);
 185    return lpr->img_stride[level];
 186 }
 187
 188
 189 static inline unsigned
 190 llvmpipe_resource_stride(struct pipe_resource *resource,
 191                          unsigned level)
 192 {
 193    struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
 194    assert(level < LP_MAX_TEXTURE_2D_LEVELS);
 195    return lpr->row_stride[level];
 196 }
 197
 198
 199 void *
 200 llvmpipe_resource_map(struct pipe_resource *resource,
 201                       unsigned level,
 202                       unsigned layer,
 203                       enum lp_texture_usage tex_usage);
 204
 205 void
 206 llvmpipe_resource_unmap(struct pipe_resource *resource,
 207                         unsigned level,
 208                         unsigned layer);
 209
 210
 211 void *
 212 llvmpipe_resource_data(struct pipe_resource *resource);
 213
 214
 215 unsigned
 216 llvmpipe_resource_size(const struct pipe_resource *resource);
 217
 218
 219 ubyte *
 220 llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpr,
 221                                    unsigned face_slice, unsigned level);
 222
 223
 224 extern void
 225 llvmpipe_print_resources(void);
 226
 227
 228 #define LP_UNREFERENCED         0
 229 #define LP_REFERENCED_FOR_READ  (1 << 0)
 230 #define LP_REFERENCED_FOR_WRITE (1 << 1)
 231
 232 unsigned int
 233 llvmpipe_is_resource_referenced( struct pipe_context *pipe,
 234                                  struct pipe_resource *presource,
 235                                  unsigned level);
 236
 237 unsigned
 238 llvmpipe_get_format_alignment(enum pipe_format format);
 239
 240 void *
 241 llvmpipe_transfer_map_ms( struct pipe_context *pipe,
 242                           struct pipe_resource *resource,
 243                           unsigned level,
 244                           unsigned usage,
 245                           unsigned sample,
 246                           const struct pipe_box *box,
 247                           struct pipe_transfer **transfer );
 248 #endif /* LP_TEXTURE_H */