src/gallium/drivers/svga/svga_winsys.h

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 /**
  27  * @file
  28  * VMware SVGA specific winsys interface.
  29  *
  30  * @author Jose Fonseca <jfonseca@vmware.com>
  31  *
  32  * Documentation taken from the VMware SVGA DDK.
  33  */
  34
  35 #ifndef SVGA_WINSYS_H_
  36 #define SVGA_WINSYS_H_
  37
  38
  39 #include "svga_types.h"
  40 #include "svga_reg.h"
  41 #include "svga3d_reg.h"
  42
  43 #include "pipe/p_compiler.h"
  44 #include "pipe/p_defines.h"
  45
  46
  47 struct svga_winsys_screen;
  48 struct svga_winsys_buffer;
  49 struct pipe_screen;
  50 struct pipe_context;
  51 struct pipe_fence_handle;
  52 struct pipe_resource;
  53 struct svga_region;
  54 struct winsys_handle;
  55
  56
  57 #define SVGA_BUFFER_USAGE_PINNED  (1 << 0)
  58 #define SVGA_BUFFER_USAGE_WRAPPED (1 << 1)
  59
  60
  61 #define SVGA_RELOC_WRITE 0x1
  62 #define SVGA_RELOC_READ  0x2
  63
  64
  65
  66 /** Opaque surface handle */
  67 struct svga_winsys_surface;
  68
  69 /** Opaque buffer handle */
  70 struct svga_winsys_handle;
  71
  72
  73 /**
  74  * SVGA per-context winsys interface.
  75  */
  76 struct svga_winsys_context
  77 {
  78    void
  79    (*destroy)(struct svga_winsys_context *swc);
  80
  81    void *
  82    (*reserve)(struct svga_winsys_context *swc,
  83               uint32_t nr_bytes, uint32_t nr_relocs );
  84
  85    /**
  86     * Emit a relocation for a host surface.
  87     *
  88     * @param flags bitmask of SVGA_RELOC_* flags
  89     *
  90     * NOTE: Order of this call does matter. It should be the same order
  91     * as relocations appear in the command buffer.
  92     */
  93    void
  94    (*surface_relocation)(struct svga_winsys_context *swc,
  95                          uint32 *sid,
  96                          struct svga_winsys_surface *surface,
  97                          unsigned flags);
  98
  99    /**
 100     * Emit a relocation for a guest memory region.
 101     *
 102     * @param flags bitmask of SVGA_RELOC_* flags
 103     *
 104     * NOTE: Order of this call does matter. It should be the same order
 105     * as relocations appear in the command buffer.
 106     */
 107    void
 108    (*region_relocation)(struct svga_winsys_context *swc,
 109                         struct SVGAGuestPtr *ptr,
 110                         struct svga_winsys_buffer *buffer,
 111                         uint32 offset,
 112                         unsigned flags);
 113
 114    void
 115    (*commit)(struct svga_winsys_context *swc);
 116
 117    enum pipe_error
 118    (*flush)(struct svga_winsys_context *swc,
 119             struct pipe_fence_handle **pfence);
 120
 121    /**
 122     * Context ID used to fill in the commands
 123     *
 124     * Context IDs are arbitrary small non-negative integers,
 125     * global to the entire SVGA device.
 126     */
 127    uint32 cid;
 128 };
 129
 130
 131 /**
 132  * SVGA per-screen winsys interface.
 133  */
 134 struct svga_winsys_screen
 135 {
 136    void
 137    (*destroy)(struct svga_winsys_screen *sws);
 138
 139    SVGA3dHardwareVersion
 140    (*get_hw_version)(struct svga_winsys_screen *sws);
 141
 142    boolean
 143    (*get_cap)(struct svga_winsys_screen *sws,
 144               SVGA3dDevCapIndex index,
 145               SVGA3dDevCapResult *result);
 146
 147    /**
 148     * Create a new context.
 149     *
 150     * Context objects encapsulate all render state, and shader
 151     * objects are per-context.
 152     *
 153     * Surfaces are not per-context. The same surface can be shared
 154     * between multiple contexts, and surface operations can occur
 155     * without a context.
 156     */
 157    struct svga_winsys_context *
 158    (*context_create)(struct svga_winsys_screen *sws);
 159
 160
 161    /**
 162     * This creates a "surface" object in the SVGA3D device,
 163     * and returns the surface ID (sid). Surfaces are generic
 164     * containers for host VRAM objects like textures, vertex
 165     * buffers, and depth/stencil buffers.
 166     *
 167     * Surfaces are hierarchial:
 168     *
 169     * - Surface may have multiple faces (for cube maps)
 170     *
 171     * - Each face has a list of mipmap levels
 172     *
 173     * - Each mipmap image may have multiple volume
 174     *   slices, if the image is three dimensional.
 175     *
 176     * - Each slice is a 2D array of 'blocks'
 177     *
 178     * - Each block may be one or more pixels.
 179     *   (Usually 1, more for DXT or YUV formats.)
 180     *
 181     * Surfaces are generic host VRAM objects. The SVGA3D device
 182     * may optimize surfaces according to the format they were
 183     * created with, but this format does not limit the ways in
 184     * which the surface may be used. For example, a depth surface
 185     * can be used as a texture, or a floating point image may
 186     * be used as a vertex buffer. Some surface usages may be
 187     * lower performance, due to software emulation, but any
 188     * usage should work with any surface.
 189     */
 190    struct svga_winsys_surface *
 191    (*surface_create)(struct svga_winsys_screen *sws,
 192                      SVGA3dSurfaceFlags flags,
 193                      SVGA3dSurfaceFormat format,
 194                      SVGA3dSize size,
 195                      uint32 numFaces,
 196                      uint32 numMipLevels);
 197
 198    /**
 199     * Creates a surface from a winsys handle.
 200     * Used to implement pipe_screen::resource_from_handle.
 201     */
 202    struct svga_winsys_surface *
 203    (*surface_from_handle)(struct svga_winsys_screen *sws,
 204                           struct winsys_handle *whandle,
 205                           SVGA3dSurfaceFormat *format);
 206
 207    /**
 208     * Get a winsys_handle from a surface.
 209     * Used to implement pipe_screen::resource_get_handle.
 210     */
 211    boolean
 212    (*surface_get_handle)(struct svga_winsys_screen *sws,
 213                          struct svga_winsys_surface *surface,
 214                          unsigned stride,
 215                          struct winsys_handle *whandle);
 216
 217    /**
 218     * Whether this surface is sitting in a validate list
 219     */
 220    boolean
 221    (*surface_is_flushed)(struct svga_winsys_screen *sws,
 222                          struct svga_winsys_surface *surface);
 223
 224    /**
 225     * Reference a SVGA3D surface object. This allows sharing of a
 226     * surface between different objects.
 227     */
 228    void
 229    (*surface_reference)(struct svga_winsys_screen *sws,
 230                         struct svga_winsys_surface **pdst,
 231                         struct svga_winsys_surface *src);
 232
 233    /**
 234     * Buffer management. Buffer attributes are mostly fixed over its lifetime.
 235     *
 236     * @param usage bitmask of SVGA_BUFFER_USAGE_* flags.
 237     *
 238     * alignment indicates the client's alignment requirements, eg for
 239     * SSE instructions.
 240     */
 241    struct svga_winsys_buffer *
 242    (*buffer_create)( struct svga_winsys_screen *sws,
 243                      unsigned alignment,
 244                      unsigned usage,
 245                      unsigned size );
 246
 247    /**
 248     * Map the entire data store of a buffer object into the client's address.
 249     * usage is a bitmask of PIPE_TRANSFER_*
 250     */
 251    void *
 252    (*buffer_map)( struct svga_winsys_screen *sws,
 253                   struct svga_winsys_buffer *buf,
 254                   unsigned usage );
 255
 256    void
 257    (*buffer_unmap)( struct svga_winsys_screen *sws,
 258                     struct svga_winsys_buffer *buf );
 259
 260    void
 261    (*buffer_destroy)( struct svga_winsys_screen *sws,
 262                       struct svga_winsys_buffer *buf );
 263
 264
 265    /**
 266     * Reference a fence object.
 267     */
 268    void
 269    (*fence_reference)( struct svga_winsys_screen *sws,
 270                        struct pipe_fence_handle **pdst,
 271                        struct pipe_fence_handle *src );
 272
 273    /**
 274     * Checks whether the fence has been signalled.
 275     * \param flags  driver-specific meaning
 276     * \return zero on success.
 277     */
 278    int (*fence_signalled)( struct svga_winsys_screen *sws,
 279                            struct pipe_fence_handle *fence,
 280                            unsigned flag );
 281
 282    /**
 283     * Wait for the fence to finish.
 284     * \param flags  driver-specific meaning
 285     * \return zero on success.
 286     */
 287    int (*fence_finish)( struct svga_winsys_screen *sws,
 288                         struct pipe_fence_handle *fence,
 289                         unsigned flag );
 290
 291 };
 292
 293
 294 struct svga_winsys_screen *
 295 svga_winsys_screen(struct pipe_screen *screen);
 296
 297 struct svga_winsys_context *
 298 svga_winsys_context(struct pipe_context *context);
 299
 300 struct pipe_resource *
 301 svga_screen_buffer_wrap_surface(struct pipe_screen *screen,
 302                                 enum SVGA3dSurfaceFormat format,
 303                                 struct svga_winsys_surface *srf);
 304
 305 struct svga_winsys_surface *
 306 svga_screen_buffer_get_winsys_surface(struct pipe_resource *buffer);
 307
 308 #endif /* SVGA_WINSYS_H_ */