1 /**************************************************************************
3 * Copyright 2007 VMware, Inc.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
32 #include "pipe/p_context.h"
33 #include "util/u_sampler.h"
35 #include "main/mtypes.h"
41 struct st_texture_image_transfer
{
42 struct pipe_transfer
*transfer
;
44 /* For ETC fallback. */
45 GLubyte
*temp_data
; /**< Temporary ETC texture storage. */
46 unsigned temp_stride
; /**< Stride of the ETC texture storage. */
47 GLubyte
*map
; /**< Saved map pointer of the uncompressed transfer. */
52 * Subclass of gl_texure_image.
54 struct st_texture_image
56 struct gl_texture_image base
;
58 /* If stImage->pt != NULL, image data is stored here.
59 * Else there is no image data.
61 struct pipe_resource
*pt
;
63 /* List of transfers, allocated on demand.
64 * transfer[layer] is a mapping for that layer.
66 struct st_texture_image_transfer
*transfer
;
67 unsigned num_transfers
;
72 * Subclass of gl_texure_object.
74 struct st_texture_object
76 struct gl_texture_object base
; /* The "parent" object */
78 /* The texture must include at levels [0..lastLevel] once validated:
82 /** The size of the level=0 mipmap image.
83 * Note that the number of 1D array layers will be in height0 and the
84 * number of 2D array layers will be in depth0, as in GL.
86 GLuint width0
, height0
, depth0
;
88 /* On validation any active images held in main memory or in other
89 * textures will be copied to this texture and the old storage freed.
91 struct pipe_resource
*pt
;
93 /* Number of views in sampler_views array */
94 GLuint num_sampler_views
;
96 /* Array of sampler views (one per context) attached to this texture
97 * object. Created lazily on first binding in context.
99 struct pipe_sampler_view
**sampler_views
;
101 /* True if this texture comes from the window system. Such a texture
102 * cannot be reallocated and the format can only be changed with a sampler
105 GLboolean surface_based
;
107 /* If surface_based is true, this format should be used for all sampler
108 * views and surfaces instead of pt->format.
110 enum pipe_format surface_format
;
114 static inline struct st_texture_image
*
115 st_texture_image(struct gl_texture_image
*img
)
117 return (struct st_texture_image
*) img
;
120 static inline const struct st_texture_image
*
121 st_texture_image_const(const struct gl_texture_image
*img
)
123 return (const struct st_texture_image
*) img
;
126 static inline struct st_texture_object
*
127 st_texture_object(struct gl_texture_object
*obj
)
129 return (struct st_texture_object
*) obj
;
132 static inline const struct st_texture_object
*
133 st_texture_object_const(const struct gl_texture_object
*obj
)
135 return (const struct st_texture_object
*) obj
;
139 static inline struct pipe_resource
*
140 st_get_texobj_resource(struct gl_texture_object
*texObj
)
142 struct st_texture_object
*stObj
= st_texture_object(texObj
);
143 return stObj
? stObj
->pt
: NULL
;
147 static inline struct pipe_resource
*
148 st_get_stobj_resource(struct st_texture_object
*stObj
)
150 return stObj
? stObj
->pt
: NULL
;
154 static inline struct pipe_sampler_view
*
155 st_create_texture_sampler_view_format(struct pipe_context
*pipe
,
156 struct pipe_resource
*texture
,
157 enum pipe_format format
)
159 struct pipe_sampler_view templ
;
161 u_sampler_view_default_template(&templ
, texture
, format
);
163 return pipe
->create_sampler_view(pipe
, texture
, &templ
);
166 static inline struct pipe_sampler_view
*
167 st_create_texture_sampler_view(struct pipe_context
*pipe
,
168 struct pipe_resource
*texture
)
170 return st_create_texture_sampler_view_format(pipe
, texture
,
176 extern struct pipe_resource
*
177 st_texture_create(struct st_context
*st
,
178 enum pipe_texture_target target
,
179 enum pipe_format format
,
190 st_gl_texture_dims_to_pipe_dims(GLenum texture
,
199 /* Check if an image fits into an existing texture object.
202 st_texture_match_image(struct st_context
*st
,
203 const struct pipe_resource
*pt
,
204 const struct gl_texture_image
*image
);
206 /* Return a pointer to an image within a texture. Return image stride as
210 st_texture_image_map(struct st_context
*st
, struct st_texture_image
*stImage
,
211 enum pipe_transfer_usage usage
,
212 GLuint x
, GLuint y
, GLuint z
,
213 GLuint w
, GLuint h
, GLuint d
,
214 struct pipe_transfer
**transfer
);
217 st_texture_image_unmap(struct st_context
*st
,
218 struct st_texture_image
*stImage
, unsigned slice
);
221 /* Return pointers to each 2d slice within an image. Indexed by depth
224 extern const GLuint
*
225 st_texture_depth_offsets(struct pipe_resource
*pt
, GLuint level
);
227 /* Copy an image between two textures
230 st_texture_image_copy(struct pipe_context
*pipe
,
231 struct pipe_resource
*dst
, GLuint dstLevel
,
232 struct pipe_resource
*src
, GLuint srcLevel
,
236 extern struct pipe_resource
*
237 st_create_color_map_texture(struct gl_context
*ctx
);
239 extern struct pipe_sampler_view
**
240 st_texture_get_sampler_view(struct st_context
*st
,
241 struct st_texture_object
*stObj
);
244 st_texture_release_sampler_view(struct st_context
*st
,
245 struct st_texture_object
*stObj
);
248 st_texture_release_all_sampler_views(struct st_context
*st
,
249 struct st_texture_object
*stObj
);
252 st_texture_free_sampler_views(struct st_texture_object
*stObj
);