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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 VMware, Inc.
  4.  * All Rights Reserved.
  5.  *
  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:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  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.
  25.  *
  26.  **************************************************************************/
  27.  
  28. #ifndef ST_TEXTURE_H
  29. #define ST_TEXTURE_H
  30.  
  31.  
  32. #include "pipe/p_context.h"
  33. #include "util/u_sampler.h"
  34.  
  35. #include "main/mtypes.h"
  36.  
  37.  
  38. struct pipe_resource;
  39.  
  40.  
  41. struct st_texture_image_transfer {
  42.    struct pipe_transfer *transfer;
  43.  
  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. */
  48. };
  49.  
  50.  
  51. /**
  52.  * Subclass of gl_texure_image.
  53.  */
  54. struct st_texture_image
  55. {
  56.    struct gl_texture_image base;
  57.  
  58.    /* If stImage->pt != NULL, image data is stored here.
  59.     * Else there is no image data.
  60.     */
  61.    struct pipe_resource *pt;
  62.  
  63.    /* List of transfers, allocated on demand.
  64.     * transfer[layer] is a mapping for that layer.
  65.     */
  66.    struct st_texture_image_transfer *transfer;
  67.    unsigned num_transfers;
  68. };
  69.  
  70.  
  71. /**
  72.  * Subclass of gl_texure_object.
  73.  */
  74. struct st_texture_object
  75. {
  76.    struct gl_texture_object base;       /* The "parent" object */
  77.  
  78.    /* The texture must include at levels [0..lastLevel] once validated:
  79.     */
  80.    GLuint lastLevel;
  81.  
  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.
  85.     */
  86.    GLuint width0, height0, depth0;
  87.  
  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.
  90.     */
  91.    struct pipe_resource *pt;
  92.  
  93.    /* Number of views in sampler_views array */
  94.    GLuint num_sampler_views;
  95.  
  96.    /* Array of sampler views (one per context) attached to this texture
  97.     * object. Created lazily on first binding in context.
  98.     */
  99.    struct pipe_sampler_view **sampler_views;
  100.  
  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
  103.     * view or a surface.
  104.     */
  105.    GLboolean surface_based;
  106.  
  107.    /* If surface_based is true, this format should be used for all sampler
  108.     * views and surfaces instead of pt->format.
  109.     */
  110.    enum pipe_format surface_format;
  111. };
  112.  
  113.  
  114. static inline struct st_texture_image *
  115. st_texture_image(struct gl_texture_image *img)
  116. {
  117.    return (struct st_texture_image *) img;
  118. }
  119.  
  120. static inline const struct st_texture_image *
  121. st_texture_image_const(const struct gl_texture_image *img)
  122. {
  123.    return (const struct st_texture_image *) img;
  124. }
  125.  
  126. static inline struct st_texture_object *
  127. st_texture_object(struct gl_texture_object *obj)
  128. {
  129.    return (struct st_texture_object *) obj;
  130. }
  131.  
  132. static inline const struct st_texture_object *
  133. st_texture_object_const(const struct gl_texture_object *obj)
  134. {
  135.    return (const struct st_texture_object *) obj;
  136. }
  137.  
  138.  
  139. static inline struct pipe_resource *
  140. st_get_texobj_resource(struct gl_texture_object *texObj)
  141. {
  142.    struct st_texture_object *stObj = st_texture_object(texObj);
  143.    return stObj ? stObj->pt : NULL;
  144. }
  145.  
  146.  
  147. static inline struct pipe_resource *
  148. st_get_stobj_resource(struct st_texture_object *stObj)
  149. {
  150.    return stObj ? stObj->pt : NULL;
  151. }
  152.  
  153.  
  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)
  158. {
  159.    struct pipe_sampler_view templ;
  160.  
  161.    u_sampler_view_default_template(&templ, texture, format);
  162.  
  163.    return pipe->create_sampler_view(pipe, texture, &templ);
  164. }
  165.  
  166. static inline struct pipe_sampler_view *
  167. st_create_texture_sampler_view(struct pipe_context *pipe,
  168.                                struct pipe_resource *texture)
  169. {
  170.    return st_create_texture_sampler_view_format(pipe, texture,
  171.                                                 texture->format);
  172. }
  173.  
  174.  
  175.  
  176. extern struct pipe_resource *
  177. st_texture_create(struct st_context *st,
  178.                   enum pipe_texture_target target,
  179.                   enum pipe_format format,
  180.                   GLuint last_level,
  181.                   GLuint width0,
  182.                   GLuint height0,
  183.                   GLuint depth0,
  184.                   GLuint layers,
  185.                   GLuint nr_samples,
  186.                   GLuint tex_usage );
  187.  
  188.  
  189. extern void
  190. st_gl_texture_dims_to_pipe_dims(GLenum texture,
  191.                                 GLuint widthIn,
  192.                                 GLuint heightIn,
  193.                                 GLuint depthIn,
  194.                                 GLuint *widthOut,
  195.                                 GLuint *heightOut,
  196.                                 GLuint *depthOut,
  197.                                 GLuint *layersOut);
  198.  
  199. /* Check if an image fits into an existing texture object.
  200.  */
  201. extern GLboolean
  202. st_texture_match_image(struct st_context *st,
  203.                        const struct pipe_resource *pt,
  204.                        const struct gl_texture_image *image);
  205.  
  206. /* Return a pointer to an image within a texture.  Return image stride as
  207.  * well.
  208.  */
  209. extern GLubyte *
  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);
  215.  
  216. extern void
  217. st_texture_image_unmap(struct st_context *st,
  218.                        struct st_texture_image *stImage, unsigned slice);
  219.  
  220.  
  221. /* Return pointers to each 2d slice within an image.  Indexed by depth
  222.  * value.
  223.  */
  224. extern const GLuint *
  225. st_texture_depth_offsets(struct pipe_resource *pt, GLuint level);
  226.  
  227. /* Copy an image between two textures
  228.  */
  229. extern void
  230. st_texture_image_copy(struct pipe_context *pipe,
  231.                       struct pipe_resource *dst, GLuint dstLevel,
  232.                       struct pipe_resource *src, GLuint srcLevel,
  233.                       GLuint face);
  234.  
  235.  
  236. extern struct pipe_resource *
  237. st_create_color_map_texture(struct gl_context *ctx);
  238.  
  239. extern struct pipe_sampler_view **
  240. st_texture_get_sampler_view(struct st_context *st,
  241.                             struct st_texture_object *stObj);
  242.  
  243. extern void
  244. st_texture_release_sampler_view(struct st_context *st,
  245.                                 struct st_texture_object *stObj);
  246.  
  247. extern void
  248. st_texture_release_all_sampler_views(struct st_context *st,
  249.                                      struct st_texture_object *stObj);
  250.  
  251. void
  252. st_texture_free_sampler_views(struct st_texture_object *stObj);
  253.  
  254. #endif
  255.