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
;
69 /* For ETC images, keep track of the original data. This is necessary for
70 * mapping/unmapping, as well as image copies.
77 * Subclass of gl_texure_object.
79 struct st_texture_object
81 struct gl_texture_object base
; /* The "parent" object */
83 /* The texture must include at levels [0..lastLevel] once validated:
87 /* On validation any active images held in main memory or in other
88 * textures will be copied to this texture and the old storage freed.
90 struct pipe_resource
*pt
;
92 /* Number of views in sampler_views array */
93 GLuint num_sampler_views
;
95 /* Array of sampler views (one per context) attached to this texture
96 * object. Created lazily on first binding in context.
98 struct pipe_sampler_view
**sampler_views
;
100 /* True if this texture comes from the window system. Such a texture
101 * cannot be reallocated and the format can only be changed with a sampler
104 GLboolean surface_based
;
106 /* If surface_based is true, this format should be used for all sampler
107 * views and surfaces instead of pt->format.
109 enum pipe_format surface_format
;
111 /* When non-zero, samplers should use this layer instead of the one
112 * specified by the GL state.
114 * This is used for VDPAU interop, where imported pipe_resources may be
115 * array textures (containing layers with different fields) even though the
116 * GL state describes one non-array texture per field.
120 /** The glsl version of the shader seen during the previous validation */
121 unsigned prev_glsl_version
;
122 /** The value of the sampler's sRGBDecode state at the previous validation */
123 GLenum prev_sRGBDecode
;
127 static inline struct st_texture_image
*
128 st_texture_image(struct gl_texture_image
*img
)
130 return (struct st_texture_image
*) img
;
133 static inline const struct st_texture_image
*
134 st_texture_image_const(const struct gl_texture_image
*img
)
136 return (const struct st_texture_image
*) img
;
139 static inline struct st_texture_object
*
140 st_texture_object(struct gl_texture_object
*obj
)
142 return (struct st_texture_object
*) obj
;
145 static inline const struct st_texture_object
*
146 st_texture_object_const(const struct gl_texture_object
*obj
)
148 return (const struct st_texture_object
*) obj
;
152 static inline struct pipe_resource
*
153 st_get_texobj_resource(struct gl_texture_object
*texObj
)
155 struct st_texture_object
*stObj
= st_texture_object(texObj
);
156 return stObj
? stObj
->pt
: NULL
;
160 static inline struct pipe_resource
*
161 st_get_stobj_resource(struct st_texture_object
*stObj
)
163 return stObj
? stObj
->pt
: NULL
;
167 static inline struct st_texture_object
*
168 st_get_texture_object(struct gl_context
*ctx
,
169 const struct gl_program
*prog
,
172 const GLuint texUnit
= prog
->SamplerUnits
[unit
];
173 struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[texUnit
]._Current
;
178 return st_texture_object(texObj
);
181 static inline enum pipe_format
182 st_get_view_format(struct st_texture_object
*stObj
)
185 return PIPE_FORMAT_NONE
;
186 return stObj
->surface_based
? stObj
->surface_format
: stObj
->pt
->format
;
190 extern struct pipe_resource
*
191 st_texture_create(struct st_context
*st
,
192 enum pipe_texture_target target
,
193 enum pipe_format format
,
204 st_gl_texture_dims_to_pipe_dims(GLenum texture
,
211 uint16_t *layersOut
);
213 /* Check if an image fits into an existing texture object.
216 st_texture_match_image(struct st_context
*st
,
217 const struct pipe_resource
*pt
,
218 const struct gl_texture_image
*image
);
220 /* Return a pointer to an image within a texture. Return image stride as
224 st_texture_image_map(struct st_context
*st
, struct st_texture_image
*stImage
,
225 enum pipe_transfer_usage usage
,
226 GLuint x
, GLuint y
, GLuint z
,
227 GLuint w
, GLuint h
, GLuint d
,
228 struct pipe_transfer
**transfer
);
231 st_texture_image_unmap(struct st_context
*st
,
232 struct st_texture_image
*stImage
, unsigned slice
);
235 /* Return pointers to each 2d slice within an image. Indexed by depth
238 extern const GLuint
*
239 st_texture_depth_offsets(struct pipe_resource
*pt
, GLuint level
);
241 /* Copy an image between two textures
244 st_texture_image_copy(struct pipe_context
*pipe
,
245 struct pipe_resource
*dst
, GLuint dstLevel
,
246 struct pipe_resource
*src
, GLuint srcLevel
,
250 extern struct pipe_resource
*
251 st_create_color_map_texture(struct gl_context
*ctx
);
255 st_etc_fallback(struct st_context
*st
, struct gl_texture_image
*texImage
);
258 st_convert_image(const struct st_context
*st
, const struct gl_image_unit
*u
,
259 struct pipe_image_view
*img
);