src/gallium/include/pipe/p_screen.h

   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 /**
  29  * @file
  30  *
  31  * Screen, Adapter or GPU
  32  *
  33  * These are driver functions/facilities that are context independent.
  34  */
  35
  36
  37 #ifndef P_SCREEN_H
  38 #define P_SCREEN_H
  39
  40
  41 #include "pipe/p_compiler.h"
  42 #include "pipe/p_format.h"
  43 #include "pipe/p_defines.h"
  44 #include "pipe/p_video_enums.h"
  45
  46
  47
  48 #ifdef __cplusplus
  49 extern "C" {
  50 #endif
  51
  52
  53 /** Opaque types */
  54 struct winsys_handle;
  55 struct pipe_fence_handle;
  56 struct pipe_resource;
  57 struct pipe_surface;
  58 struct pipe_transfer;
  59 struct pipe_box;
  60
  61
  62 /**
  63  * Gallium screen/adapter context.  Basically everything
  64  * hardware-specific that doesn't actually require a rendering
  65  * context.
  66  */
  67 struct pipe_screen {
  68    void (*destroy)( struct pipe_screen * );
  69
  70    const char *(*get_name)( struct pipe_screen * );
  71
  72    const char *(*get_vendor)( struct pipe_screen * );
  73
  74    /**
  75     * Returns the device vendor.
  76     *
  77     * The returned value should return the actual device vendor/manufacturer,
  78     * rather than a potentially generic driver string.
  79     */
  80    const char *(*get_device_vendor)( struct pipe_screen * );
  81
  82    /**
  83     * Query an integer-valued capability/parameter/limit
  84     * \param param  one of PIPE_CAP_x
  85     */
  86    int (*get_param)( struct pipe_screen *, enum pipe_cap param );
  87
  88    /**
  89     * Query a float-valued capability/parameter/limit
  90     * \param param  one of PIPE_CAP_x
  91     */
  92    float (*get_paramf)( struct pipe_screen *, enum pipe_capf param );
  93
  94    /**
  95     * Query a per-shader-stage integer-valued capability/parameter/limit
  96     * \param param  one of PIPE_CAP_x
  97     */
  98    int (*get_shader_param)( struct pipe_screen *, unsigned shader, enum pipe_shader_cap param );
  99
 100    /**
 101     * Query an integer-valued capability/parameter/limit for a codec/profile
 102     * \param param  one of PIPE_VIDEO_CAP_x
 103     */
 104    int (*get_video_param)( struct pipe_screen *,
 105                            enum pipe_video_profile profile,
 106                            enum pipe_video_entrypoint entrypoint,
 107                            enum pipe_video_cap param );
 108
 109    /**
 110     * Query a compute-specific capability/parameter/limit.
 111     * \param param  one of PIPE_COMPUTE_CAP_x
 112     * \param ret    pointer to a preallocated buffer that will be
 113     *               initialized to the parameter value, or NULL.
 114     * \return       size in bytes of the parameter value that would be
 115     *               returned.
 116     */
 117    int (*get_compute_param)(struct pipe_screen *,
 118                             enum pipe_compute_cap param,
 119                             void *ret);
 120
 121    /**
 122     * Query a timestamp in nanoseconds. The returned value should match
 123     * PIPE_QUERY_TIMESTAMP. This function returns immediately and doesn't
 124     * wait for rendering to complete (which cannot be achieved with queries).
 125     */
 126    uint64_t (*get_timestamp)(struct pipe_screen *);
 127
 128    struct pipe_context * (*context_create)( struct pipe_screen *,
 129                                             void *priv );
 130
 131    /**
 132     * Check if the given pipe_format is supported as a texture or
 133     * drawing surface.
 134     * \param bindings  bitmask of PIPE_BIND_*
 135     */
 136    boolean (*is_format_supported)( struct pipe_screen *,
 137                                    enum pipe_format format,
 138                                    enum pipe_texture_target target,
 139                                    unsigned sample_count,
 140                                    unsigned bindings );
 141
 142    /**
 143     * Check if the given pipe_format is supported as output for this codec/profile.
 144     * \param profile  profile to check, may also be PIPE_VIDEO_PROFILE_UNKNOWN
 145     */
 146    boolean (*is_video_format_supported)( struct pipe_screen *,
 147                                          enum pipe_format format,
 148                                          enum pipe_video_profile profile,
 149                                          enum pipe_video_entrypoint entrypoint );
 150
 151    /**
 152     * Check if we can actually create the given resource (test the dimension,
 153     * overall size, etc).  Used to implement proxy textures.
 154     * \return TRUE if size is OK, FALSE if too large.
 155     */
 156    boolean (*can_create_resource)(struct pipe_screen *screen,
 157                                   const struct pipe_resource *templat);
 158
 159    /**
 160     * Create a new texture object, using the given template info.
 161     */
 162    struct pipe_resource * (*resource_create)(struct pipe_screen *,
 163                                              const struct pipe_resource *templat);
 164
 165    /**
 166     * Create a texture from a winsys_handle. The handle is often created in
 167     * another process by first creating a pipe texture and then calling
 168     * resource_get_handle.
 169     */
 170    struct pipe_resource * (*resource_from_handle)(struct pipe_screen *,
 171                                                   const struct pipe_resource *templat,
 172                                                   struct winsys_handle *handle);
 173
 174    /**
 175     * Create a resource from user memory. This maps the user memory into
 176     * the device address space.
 177     */
 178    struct pipe_resource * (*resource_from_user_memory)(struct pipe_screen *,
 179                                                        const struct pipe_resource *t,
 180                                                        void *user_memory);
 181
 182    /**
 183     * Get a winsys_handle from a texture. Some platforms/winsys requires
 184     * that the texture is created with a special usage flag like
 185     * DISPLAYTARGET or PRIMARY.
 186     */
 187    boolean (*resource_get_handle)(struct pipe_screen *,
 188                                   struct pipe_resource *tex,
 189                                   struct winsys_handle *handle);
 190
 191
 192    void (*resource_destroy)(struct pipe_screen *,
 193                             struct pipe_resource *pt);
 194
 195
 196    /**
 197     * Do any special operations to ensure frontbuffer contents are
 198     * displayed, eg copy fake frontbuffer.
 199     * \param winsys_drawable_handle  an opaque handle that the calling context
 200     *                                gets out-of-band
 201     * \param subbox an optional sub region to flush
 202     */
 203    void (*flush_frontbuffer)( struct pipe_screen *screen,
 204                               struct pipe_resource *resource,
 205                               unsigned level, unsigned layer,
 206                               void *winsys_drawable_handle,
 207                               struct pipe_box *subbox );
 208
 209    /** Set ptr = fence, with reference counting */
 210    void (*fence_reference)( struct pipe_screen *screen,
 211                             struct pipe_fence_handle **ptr,
 212                             struct pipe_fence_handle *fence );
 213
 214    /**
 215     * Wait for the fence to finish.
 216     * \param timeout  in nanoseconds (may be PIPE_TIMEOUT_INFINITE).
 217     */
 218    boolean (*fence_finish)( struct pipe_screen *screen,
 219                             struct pipe_fence_handle *fence,
 220                             uint64_t timeout );
 221
 222    /**
 223     * Returns a driver-specific query.
 224     *
 225     * If \p info is NULL, the number of available queries is returned.
 226     * Otherwise, the driver query at the specified \p index is returned
 227     * in \p info. The function returns non-zero on success.
 228     */
 229    int (*get_driver_query_info)(struct pipe_screen *screen,
 230                                 unsigned index,
 231                                 struct pipe_driver_query_info *info);
 232
 233    /**
 234     * Returns a driver-specific query group.
 235     *
 236     * If \p info is NULL, the number of available groups is returned.
 237     * Otherwise, the driver query group at the specified \p index is returned
 238     * in \p info. The function returns non-zero on success.
 239     */
 240    int (*get_driver_query_group_info)(struct pipe_screen *screen,
 241                                       unsigned index,
 242                                       struct pipe_driver_query_group_info *info);
 243
 244 };
 245
 246
 247 #ifdef __cplusplus
 248 }
 249 #endif
 250
 251 #endif /* P_SCREEN_H */