1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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 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.
26 **************************************************************************/
28 #ifndef _INTEL_TEX_OBJ_H
29 #define _INTEL_TEX_OBJ_H
31 #include "swrast/s_context.h"
34 struct intel_texture_object
36 struct gl_texture_object base
;
38 /* This is a mirror of base._MaxLevel, updated at validate time,
39 * except that we don't bother with the non-base levels for
40 * non-mipmapped textures.
42 unsigned int _MaxLevel
;
44 /* Offset for firstLevel image:
48 /* On validation any active images held in main memory or in other
49 * regions will be copied to this region and the old storage freed.
51 struct intel_mipmap_tree
*mt
;
56 * intel_texture_image is a subclass of swrast_texture_image because we
57 * sometimes fall back to using the swrast module for software rendering.
59 struct intel_texture_image
61 struct swrast_texture_image base
;
63 /* If intelImage->mt != NULL, image data is stored here.
64 * Else if intelImage->base.Data != NULL, image is stored there.
65 * Else there is no image data.
67 struct intel_mipmap_tree
*mt
;
68 GLboolean used_as_render_target
;
71 * \name Renderbuffers for faking packed depth/stencil
73 * These renderbuffers are non-null only if the intel_context is using
74 * separate stencil and this texture has a packed depth/stencil format. When
75 * glFramebufferTexture is called on this image, the resultant renderbuffer
76 * wrapper reuses these renderbuffers as its own.
78 * \see intel_wrap_texture
79 * \see intel_tex_image_s8z24_create_renderbuffers
80 * \see intel_tex_image_s8z24_scatter
81 * \see intel_tex_image_s8z24_gather
87 * The depth buffer has format X8_Z24. The x8 bits are undefined unless
88 * intel_tex_image_s8z24_gather has been immediately called. The depth buffer
89 * resuses the image miptree's region and hiz_region as its own.
91 struct gl_renderbuffer
*depth_rb
;
94 * The stencil buffer has format S8 and keeps its data in its own region.
96 struct gl_renderbuffer
*stencil_rb
;
101 static INLINE
struct intel_texture_object
*
102 intel_texture_object(struct gl_texture_object
*obj
)
104 return (struct intel_texture_object
*) obj
;
107 static INLINE
struct intel_texture_image
*
108 intel_texture_image(struct gl_texture_image
*img
)
110 return (struct intel_texture_image
*) img
;
113 #endif /* _INTEL_TEX_OBJ_H */