1 /**************************************************************************
3 * Copyright 2007 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 **************************************************************************/
32 #include "pipe/p_context.h"
33 #include "util/u_sampler.h"
35 #include "main/mtypes.h"
41 struct st_texture_image
43 struct gl_texture_image base;
45 /* These aren't stored in gl_texture_image
50 /* If stImage->pt != NULL, image data is stored here.
51 * Else if stImage->base.Data != NULL, image is stored there.
52 * Else there is no image data.
54 struct pipe_resource *pt;
56 struct pipe_transfer *transfer;
61 struct st_texture_object
63 struct gl_texture_object base; /* The "parent" object */
65 /* The texture must include at levels [0..lastLevel] once validated:
69 /* On validation any active images held in main memory or in other
70 * textures will be copied to this texture and the old storage freed.
72 struct pipe_resource *pt;
74 /* Default sampler view attached to this texture object. Created lazily
77 struct pipe_sampler_view *sampler_view;
79 struct pipe_context *pipe;
81 GLboolean teximage_realloc;
83 /* True if there is/was a surface bound to this texture object. It helps
84 * track whether the texture object is surface based or not.
86 GLboolean surface_based;
90 static INLINE struct st_texture_image *
91 st_texture_image(struct gl_texture_image *img)
93 return (struct st_texture_image *) img;
96 static INLINE struct st_texture_object *
97 st_texture_object(struct gl_texture_object *obj)
99 return (struct st_texture_object *) obj;
103 static INLINE struct pipe_resource *
104 st_get_texobj_texture(struct gl_texture_object *texObj)
106 struct st_texture_object *stObj = st_texture_object(texObj);
107 return stObj ? stObj->pt : NULL;
111 static INLINE struct pipe_resource *
112 st_get_stobj_texture(struct st_texture_object *stObj)
114 return stObj ? stObj->pt : NULL;
118 static INLINE struct pipe_sampler_view *
119 st_sampler_view_from_texture(struct pipe_context *pipe,
120 struct pipe_resource *texture)
122 struct pipe_sampler_view templ;
124 u_sampler_view_default_template(&templ,
128 return pipe->create_sampler_view(pipe, texture, &templ);
132 static INLINE struct pipe_sampler_view *
133 st_get_stobj_sampler_view(struct st_texture_object *stObj)
135 if (!stObj || !stObj->pt) {
139 if (!stObj->sampler_view) {
140 stObj->sampler_view = st_sampler_view_from_texture(stObj->pipe, stObj->pt);
143 return stObj->sampler_view;
147 extern struct pipe_resource *
148 st_texture_create(struct st_context *st,
149 enum pipe_texture_target target,
150 enum pipe_format format,
158 /* Check if an image fits into an existing texture object.
161 st_texture_match_image(const struct pipe_resource *pt,
162 const struct gl_texture_image *image,
163 GLuint face, GLuint level);
165 /* Return a pointer to an image within a texture. Return image stride as
169 st_texture_image_map(struct st_context *st,
170 struct st_texture_image *stImage,
172 enum pipe_transfer_usage usage,
173 unsigned x, unsigned y,
174 unsigned w, unsigned h);
177 st_texture_image_unmap(struct st_context *st,
178 struct st_texture_image *stImage);
181 /* Return pointers to each 2d slice within an image. Indexed by depth
184 extern const GLuint *
185 st_texture_depth_offsets(struct pipe_resource *pt, GLuint level);
188 /* Return the linear offset of an image relative to the start of its region.
191 st_texture_image_offset(const struct pipe_resource *pt,
192 GLuint face, GLuint level);
195 st_texture_texel_offset(const struct pipe_resource * pt,
196 GLuint face, GLuint level,
197 GLuint col, GLuint row, GLuint img);
200 /* Upload an image into a texture
203 st_texture_image_data(struct st_context *st,
204 struct pipe_resource *dst,
205 GLuint face, GLuint level, void *src,
206 GLuint src_row_pitch, GLuint src_image_pitch);
209 /* Copy an image between two textures
212 st_texture_image_copy(struct pipe_context *pipe,
213 struct pipe_resource *dst, GLuint dstLevel,
214 struct pipe_resource *src,
218 st_teximage_flush_before_map(struct st_context *st,
219 struct pipe_resource *pt,
222 enum pipe_transfer_usage usage);