aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/mesa/state_tracker/st_texture.h
blob: c15aeaea68596d6ef992d8fcb03529100df17082 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
/**************************************************************************
 * 
 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
 * 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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.
 * 
 **************************************************************************/

#ifndef ST_TEXTURE_H
#define ST_TEXTURE_H


#include "pipe/p_context.h"
#include "util/u_sampler.h"

#include "main/mtypes.h"


struct pipe_resource;


/**
 * Subclass of gl_texure_image.
 */
struct st_texture_image
{
   struct gl_texture_image base;

   /** Used to store texture data that doesn't fit in the parent
    * object's mipmap buffer.
    */
   GLubyte *TexData;

   /* If stImage->pt != NULL, image data is stored here.
    * Else if stImage->TexData != NULL, image is stored there.
    * Else there is no image data.
    */
   struct pipe_resource *pt;

   struct pipe_transfer *transfer;
};


/**
 * Subclass of gl_texure_object.
 */
struct st_texture_object
{
   struct gl_texture_object base;       /* The "parent" object */

   /* The texture must include at levels [0..lastLevel] once validated:
    */
   GLuint lastLevel;

   /** The size of the level=0 mipmap image.
    * Note that the number of 1D array layers will be in height0 and the
    * number of 2D array layers will be in depth0, as in GL.
    */
   GLuint width0, height0, depth0;

   /* On validation any active images held in main memory or in other
    * textures will be copied to this texture and the old storage freed.
    */
   struct pipe_resource *pt;

   /* Default sampler view attached to this texture object. Created lazily
    * on first binding.
    */
   struct pipe_sampler_view *sampler_view;

   /* True if this texture comes from the window system. Such a texture
    * cannot be reallocated and the format can only be changed with a sampler
    * view or a surface.
    */
   GLboolean surface_based;

   /* If surface_based is true, this format should be used for all sampler
    * views and surfaces instead of pt->format.
    */
   enum pipe_format surface_format;
};


static INLINE struct st_texture_image *
st_texture_image(struct gl_texture_image *img)
{
   return (struct st_texture_image *) img;
}

static INLINE struct st_texture_object *
st_texture_object(struct gl_texture_object *obj)
{
   return (struct st_texture_object *) obj;
}


static INLINE struct pipe_resource *
st_get_texobj_resource(struct gl_texture_object *texObj)
{
   struct st_texture_object *stObj = st_texture_object(texObj);
   return stObj ? stObj->pt : NULL;
}


static INLINE struct pipe_resource *
st_get_stobj_resource(struct st_texture_object *stObj)
{
   return stObj ? stObj->pt : NULL;
}


static INLINE struct pipe_sampler_view *
st_create_texture_sampler_view_format(struct pipe_context *pipe,
                                      struct pipe_resource *texture,
                                      enum pipe_format format)
{
   struct pipe_sampler_view templ;

   u_sampler_view_default_template(&templ, texture, format);

   return pipe->create_sampler_view(pipe, texture, &templ);
}

static INLINE struct pipe_sampler_view *
st_create_texture_sampler_view(struct pipe_context *pipe,
                               struct pipe_resource *texture)
{
   return st_create_texture_sampler_view_format(pipe, texture,
                                                texture->format);
}



extern struct pipe_resource *
st_texture_create(struct st_context *st,
                  enum pipe_texture_target target,
		  enum pipe_format format,
                  GLuint last_level,
                  GLuint width0,
                  GLuint height0,
                  GLuint depth0,
                  GLuint layers,
                  GLuint nr_samples,
                  GLuint tex_usage );


extern void
st_gl_texture_dims_to_pipe_dims(GLenum texture,
                                GLuint widthIn,
                                GLuint heightIn,
                                GLuint depthIn,
                                GLuint *widthOut,
                                GLuint *heightOut,
                                GLuint *depthOut,
                                GLuint *layersOut);

/* Check if an image fits into an existing texture object.
 */
extern GLboolean
st_texture_match_image(const struct pipe_resource *pt,
                       const struct gl_texture_image *image);

/* Return a pointer to an image within a texture.  Return image stride as
 * well.
 */
extern GLubyte *
st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
                     enum pipe_transfer_usage usage,
                     GLuint x, GLuint y, GLuint z,
                     GLuint w, GLuint h, GLuint d);

extern void
st_texture_image_unmap(struct st_context *st,
                       struct st_texture_image *stImage);


/* Return pointers to each 2d slice within an image.  Indexed by depth
 * value.
 */
extern const GLuint *
st_texture_depth_offsets(struct pipe_resource *pt, GLuint level);


/* Upload an image into a texture
 */
extern void
st_texture_image_data(struct st_context *st,
                      struct pipe_resource *dst,
                      GLuint face, GLuint level, void *src,
                      GLuint src_row_pitch, GLuint src_image_pitch);


/* Copy an image between two textures
 */
extern void
st_texture_image_copy(struct pipe_context *pipe,
                      struct pipe_resource *dst, GLuint dstLevel,
                      struct pipe_resource *src, GLuint srcLevel,
                      GLuint face);


extern struct pipe_resource *
st_create_color_map_texture(struct gl_context *ctx);

#endif