lp_texture.h revision 2f6d47a7c8d6e69e5154de44115aab9ba35a41d2 
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
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
37enum 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 */
46enum 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
55struct pipe_context;
56struct pipe_screen;
57struct llvmpipe_context;
58
59struct 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 */
71struct 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 */
85struct 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
130struct llvmpipe_transfer
131{
132   struct pipe_transfer base;
133
134   unsigned long offset;
135};
136
137
138/** cast wrappers */
139static INLINE struct llvmpipe_resource *
140llvmpipe_resource(struct pipe_resource *pt)
141{
142   return (struct llvmpipe_resource *) pt;
143}
144
145
146static INLINE const struct llvmpipe_resource *
147llvmpipe_resource_const(const struct pipe_resource *pt)
148{
149   return (const struct llvmpipe_resource *) pt;
150}
151
152
153static INLINE struct llvmpipe_transfer *
154llvmpipe_transfer(struct pipe_transfer *pt)
155{
156   return (struct llvmpipe_transfer *) pt;
157}
158
159
160void llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen);
161void llvmpipe_init_context_resource_funcs(struct pipe_context *pipe);
162
163static INLINE unsigned
164llvmpipe_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
173void *
174llvmpipe_resource_map(struct pipe_resource *resource,
175		      unsigned face_slice,
176		      unsigned level,
177		      unsigned zslice,
178                      enum lp_texture_usage tex_usage,
179                      enum lp_texture_layout layout);
180
181void
182llvmpipe_resource_unmap(struct pipe_resource *resource,
183                       unsigned face_slice,
184                       unsigned level,
185                       unsigned zslice);
186
187
188void *
189llvmpipe_resource_data(struct pipe_resource *resource);
190
191
192unsigned
193llvmpipe_resource_size(const struct pipe_resource *resource);
194
195
196ubyte *
197llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpr,
198                                    unsigned face_slice, unsigned level,
199                                    enum lp_texture_layout layout);
200
201void *
202llvmpipe_get_texture_image(struct llvmpipe_resource *resource,
203                            unsigned face_slice, unsigned level,
204                            enum lp_texture_usage usage,
205                            enum lp_texture_layout layout);
206
207void *
208llvmpipe_get_texture_image_all(struct llvmpipe_resource *lpr,
209                               unsigned level,
210                               enum lp_texture_usage usage,
211                               enum lp_texture_layout layout);
212
213ubyte *
214llvmpipe_get_texture_tile_linear(struct llvmpipe_resource *lpr,
215                                  unsigned face_slice, unsigned level,
216                                  enum lp_texture_usage usage,
217                                  unsigned x, unsigned y);
218
219ubyte *
220llvmpipe_get_texture_tile(struct llvmpipe_resource *lpr,
221                           unsigned face_slice, unsigned level,
222                           enum lp_texture_usage usage,
223                           unsigned x, unsigned y);
224
225
226void
227llvmpipe_unswizzle_cbuf_tile(struct llvmpipe_resource *lpr,
228                             unsigned face_slice, unsigned level,
229                             unsigned x, unsigned y,
230                             uint8_t *tile);
231
232void
233llvmpipe_swizzle_cbuf_tile(struct llvmpipe_resource *lpr,
234                           unsigned face_slice, unsigned level,
235                           unsigned x, unsigned y,
236                           uint8_t *tile);
237
238extern void
239llvmpipe_print_resources(void);
240
241
242extern void
243llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen);
244
245extern void
246llvmpipe_init_context_texture_funcs(struct pipe_context *pipe);
247
248#endif /* LP_TEXTURE_H */
249