src/gallium/drivers/llvmpipe/lp_texture.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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  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 /** Per-tile layout mode */
  46 enum lp_texture_layout
  47 {
  48    LP_TEX_LAYOUT_NONE = 0,  /**< no layout for the tile data yet */
  49    LP_TEX_LAYOUT_TILED,     /**< the tile data is in tiled layout */
  50    LP_TEX_LAYOUT_LINEAR,    /**< the tile data is in linear layout */
  51    LP_TEX_LAYOUT_BOTH       /**< the tile data is in both modes */
  52 };
  53
  54
  55 struct pipe_context;
  56 struct pipe_screen;
  57 struct llvmpipe_context;
  58
  59 struct sw_displaytarget;
  60
  61
  62 /**
  63  * We keep one or two copies of the texture image data:  one in a simple
  64  * linear layout (for texture sampling) and another in a tiled layout (for
  65  * render targets).  We keep track of whether each image tile is linear
  66  * or tiled on a per-tile basis.
  67  */
  68
  69
  70 /** A 1D/2D/3D image, one mipmap level */
  71 struct llvmpipe_texture_image
  72 {
  73    void *data;
  74 };
  75
  76
  77 /**
  78  * llvmpipe subclass of pipe_resource.  A texture, drawing surface,
  79  * vertex buffer, const buffer, etc.
  80  * Textures are stored differently than othere types of objects such as
  81  * vertex buffers and const buffers.
  82  * The former are tiled and have per-tile layout flags.
  83  * The later are simple malloc'd blocks of memory.
  84  */
  85 struct llvmpipe_resource
  86 {
  87    struct pipe_resource base;
  88
  89    /** Row stride in bytes */
  90    unsigned row_stride[LP_MAX_TEXTURE_LEVELS];
  91    /** Image stride (for cube maps or 3D textures) in bytes */
  92    unsigned img_stride[LP_MAX_TEXTURE_LEVELS];
  93    unsigned tiles_per_row[LP_MAX_TEXTURE_LEVELS];
  94    unsigned tiles_per_image[LP_MAX_TEXTURE_LEVELS];
  95    /** Number of 3D slices or cube faces per level */
  96    unsigned num_slices_faces[LP_MAX_TEXTURE_LEVELS];
  97
  98    /**
  99     * Display target, for textures with the PIPE_BIND_DISPLAY_TARGET
 100     * usage.
 101     */
 102    struct sw_displaytarget *dt;
 103
 104    /**
 105     * Malloc'ed data for regular textures, or a mapping to dt above.
 106     */
 107    struct llvmpipe_texture_image tiled[LP_MAX_TEXTURE_LEVELS];
 108    struct llvmpipe_texture_image linear[LP_MAX_TEXTURE_LEVELS];
 109
 110    /**
 111     * Data for non-texture resources.
 112     */
 113    void *data;
 114
 115    /** array [level][face or slice][tile_y][tile_x] of layout values) */
 116    enum lp_texture_layout *layout[LP_MAX_TEXTURE_LEVELS];
 117
 118    boolean userBuffer;  /** Is this a user-space buffer? */
 119    unsigned timestamp;
 120
 121    unsigned id;  /**< temporary, for debugging */
 122
 123 #ifdef DEBUG
 124    /** for linked list */
 125    struct llvmpipe_resource *prev, *next;
 126 #endif
 127 };
 128
 129
 130 struct llvmpipe_transfer
 131 {
 132    struct pipe_transfer base;
 133
 134    unsigned long offset;
 135 };
 136
 137
 138 /** cast wrappers */
 139 static INLINE struct llvmpipe_resource *
 140 llvmpipe_resource(struct pipe_resource *pt)
 141 {
 142    return (struct llvmpipe_resource *) pt;
 143 }
 144
 145
 146 static INLINE const struct llvmpipe_resource *
 147 llvmpipe_resource_const(const struct pipe_resource *pt)
 148 {
 149    return (const struct llvmpipe_resource *) pt;
 150 }
 151
 152
 153 static INLINE struct llvmpipe_transfer *
 154 llvmpipe_transfer(struct pipe_transfer *pt)
 155 {
 156    return (struct llvmpipe_transfer *) pt;
 157 }
 158
 159
 160 void llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen);
 161 void llvmpipe_init_context_resource_funcs(struct pipe_context *pipe);
 162
 163 static INLINE unsigned
 164 llvmpipe_resource_stride(struct pipe_resource *resource,
 165                         unsigned level)
 166 {
 167    struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
 168    assert(level < LP_MAX_TEXTURE_2D_LEVELS);
 169    return lpr->row_stride[level];
 170 }
 171
 172
 173 void *
 174 llvmpipe_resource_map(struct pipe_resource *resource,
 175                       unsigned level,
 176                       unsigned layer,
 177                       enum lp_texture_usage tex_usage,
 178                       enum lp_texture_layout layout);
 179
 180 void
 181 llvmpipe_resource_unmap(struct pipe_resource *resource,
 182                        unsigned level,
 183                        unsigned layer);
 184
 185
 186 void *
 187 llvmpipe_resource_data(struct pipe_resource *resource);
 188
 189
 190 unsigned
 191 llvmpipe_resource_size(const struct pipe_resource *resource);
 192
 193
 194 ubyte *
 195 llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpr,
 196                                     unsigned face_slice, unsigned level,
 197                                     enum lp_texture_layout layout);
 198
 199 void *
 200 llvmpipe_get_texture_image(struct llvmpipe_resource *resource,
 201                             unsigned face_slice, unsigned level,
 202                             enum lp_texture_usage usage,
 203                             enum lp_texture_layout layout);
 204
 205 void *
 206 llvmpipe_get_texture_image_all(struct llvmpipe_resource *lpr,
 207                                unsigned level,
 208                                enum lp_texture_usage usage,
 209                                enum lp_texture_layout layout);
 210
 211 ubyte *
 212 llvmpipe_get_texture_tile_linear(struct llvmpipe_resource *lpr,
 213                                   unsigned face_slice, unsigned level,
 214                                   enum lp_texture_usage usage,
 215                                   unsigned x, unsigned y);
 216
 217 ubyte *
 218 llvmpipe_get_texture_tile(struct llvmpipe_resource *lpr,
 219                            unsigned face_slice, unsigned level,
 220                            enum lp_texture_usage usage,
 221                            unsigned x, unsigned y);
 222
 223
 224 void
 225 llvmpipe_unswizzle_cbuf_tile(struct llvmpipe_resource *lpr,
 226                              unsigned face_slice, unsigned level,
 227                              unsigned x, unsigned y,
 228                              uint8_t *tile);
 229
 230 void
 231 llvmpipe_swizzle_cbuf_tile(struct llvmpipe_resource *lpr,
 232                            unsigned face_slice, unsigned level,
 233                            unsigned x, unsigned y,
 234                            uint8_t *tile);
 235
 236 extern void
 237 llvmpipe_print_resources(void);
 238
 239
 240 extern void
 241 llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen);
 242
 243 extern void
 244 llvmpipe_init_context_texture_funcs(struct pipe_context *pipe);
 245
 246 #endif /* LP_TEXTURE_H */