src/gallium/drivers/i965/brw_winsys.h

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 Jakob Bornecrantz
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  **************************************************************************/
  25
  26 #ifndef BRW_WINSYS_H
  27 #define BRW_WINSYS_H
  28
  29 #include "pipe/p_compiler.h"
  30 #include "pipe/p_error.h"
  31
  32 struct brw_winsys;
  33 struct pipe_fence_handle;
  34
  35 /* Not sure why the winsys needs this:
  36  */
  37 #define BRW_BATCH_SIZE (32*1024)
  38
  39
  40 /* Need a tiny bit of information inside the abstract buffer struct:
  41  */
  42 struct brw_winsys_buffer {
  43    unsigned *offset;
  44    unsigned size;
  45 };
  46
  47
  48 /* Should be possible to validate usages above against buffer creation
  49  * types, below:
  50  */
  51 enum brw_buffer_type
  52 {
  53    BRW_BUFFER_TYPE_TEXTURE,
  54    BRW_BUFFER_TYPE_SCANOUT, /**< a texture used for scanning out from */
  55    BRW_BUFFER_TYPE_VERTEX,
  56    BRW_BUFFER_TYPE_CURBE,
  57    BRW_BUFFER_TYPE_QUERY,
  58    BRW_BUFFER_TYPE_SHADER_CONSTANTS,
  59    BRW_BUFFER_TYPE_SHADER_SCRATCH,
  60    BRW_BUFFER_TYPE_BATCH,
  61    BRW_BUFFER_TYPE_GENERAL_STATE,
  62    BRW_BUFFER_TYPE_SURFACE_STATE,
  63    BRW_BUFFER_TYPE_PIXEL,       /* image uploads, pbo's, etc */
  64    BRW_BUFFER_TYPE_GENERIC,     /* unknown */
  65    BRW_BUFFER_TYPE_MAX          /* Count of possible values */
  66 };
  67
  68
  69 /* Describe the usage of a particular buffer in a relocation.  The DRM
  70  * winsys will translate these back to GEM read/write domain flags.
  71  */
  72 enum brw_buffer_usage {
  73    BRW_USAGE_STATE,         /* INSTRUCTION, 0 */
  74    BRW_USAGE_QUERY_RESULT,       /* INSTRUCTION, INSTRUCTION */
  75    BRW_USAGE_RENDER_TARGET, /* RENDER,      0 */
  76    BRW_USAGE_DEPTH_BUFFER,       /* RENDER,      RENDER */
  77    BRW_USAGE_BLIT_SOURCE,        /* RENDER,      0 */
  78    BRW_USAGE_BLIT_DEST,     /* RENDER,      RENDER */
  79    BRW_USAGE_SAMPLER,    /* SAMPLER,     0 */
  80    BRW_USAGE_VERTEX,     /* VERTEX,      0 */
  81    BRW_USAGE_SCRATCH,    /* 0,           0 */
  82    BRW_USAGE_MAX
  83 };
  84
  85 enum brw_buffer_data_type {
  86    BRW_DATA_GS_CC_VP,
  87    BRW_DATA_GS_CC_UNIT,
  88    BRW_DATA_GS_WM_PROG,
  89    BRW_DATA_GS_SAMPLER_DEFAULT_COLOR,
  90    BRW_DATA_GS_SAMPLER,
  91    BRW_DATA_GS_WM_UNIT,
  92    BRW_DATA_GS_SF_PROG,
  93    BRW_DATA_GS_SF_VP,
  94    BRW_DATA_GS_SF_UNIT,
  95    BRW_DATA_GS_VS_UNIT,
  96    BRW_DATA_GS_VS_PROG,
  97    BRW_DATA_GS_GS_UNIT,
  98    BRW_DATA_GS_GS_PROG,
  99    BRW_DATA_GS_CLIP_VP,
 100    BRW_DATA_GS_CLIP_UNIT,
 101    BRW_DATA_GS_CLIP_PROG,
 102    BRW_DATA_SS_SURFACE,
 103    BRW_DATA_SS_SURF_BIND,
 104    BRW_DATA_OTHER,
 105    BRW_DATA_MAX
 106 };
 107
 108 struct brw_winsys_screen {
 109
 110
 111    /**
 112     * Buffer functions.
 113     */
 114
 115    /*@{*/
 116    /**
 117     * Create a buffer.
 118     */
 119    struct brw_winsys_buffer *(*bo_alloc)( struct brw_winsys_screen *sws,
 120                                           enum brw_buffer_type type,
 121                                           unsigned size,
 122                                           unsigned alignment );
 123
 124    /* Reference and unreference buffers:
 125     */
 126    void (*bo_reference)( struct brw_winsys_buffer *buffer );
 127    void (*bo_unreference)( struct brw_winsys_buffer *buffer );
 128
 129    /* delta -- added to b2->offset, and written into buffer
 130     * offset -- location above value is written to within buffer
 131     */
 132    int (*bo_emit_reloc)( struct brw_winsys_buffer *buffer,
 133                          enum brw_buffer_usage usage,
 134                          unsigned delta,
 135                          unsigned offset,
 136                          struct brw_winsys_buffer *b2);
 137
 138    int (*bo_exec)( struct brw_winsys_buffer *buffer,
 139                    unsigned bytes_used );
 140
 141    int (*bo_subdata)(struct brw_winsys_buffer *buffer,
 142                      enum brw_buffer_data_type data_type,
 143                      size_t offset,
 144                      size_t size,
 145                      const void *data);
 146
 147    boolean (*bo_is_busy)(struct brw_winsys_buffer *buffer);
 148    boolean (*bo_references)(struct brw_winsys_buffer *a,
 149                             struct brw_winsys_buffer *b);
 150
 151    /* XXX: couldn't this be handled by returning true/false on
 152     * bo_emit_reloc?
 153     */
 154    enum pipe_error (*check_aperture_space)( struct brw_winsys_screen *iws,
 155                                             struct brw_winsys_buffer **buffers,
 156                                             unsigned count );
 157
 158    /**
 159     * Map a buffer.
 160     */
 161    void *(*bo_map)(struct brw_winsys_buffer *buffer,
 162                    enum brw_buffer_data_type data_type,
 163                    boolean write);
 164
 165    /**
 166     * Unmap a buffer.
 167     */
 168    void (*bo_unmap)(struct brw_winsys_buffer *buffer);
 169    /*@}*/
 170
 171    /**
 172     * Destroy the winsys.
 173     */
 174    void (*destroy)(struct brw_winsys_screen *iws);
 175 };
 176
 177
 178 /**
 179  * Create brw pipe_screen.
 180  */
 181 struct pipe_screen *brw_create_screen(struct brw_winsys_screen *iws, unsigned pci_id);
 182
 183 /**
 184  * Create a brw pipe_context.
 185  */
 186 struct pipe_context *brw_create_context(struct pipe_screen *screen);
 187
 188 /**
 189  * Get the brw_winsys buffer backing the texture.
 190  *
 191  * TODO UGLY
 192  */
 193 struct pipe_texture;
 194 boolean brw_texture_get_winsys_buffer(struct pipe_texture *texture,
 195                                       struct brw_winsys_buffer **buffer,
 196                                       unsigned *stride);
 197
 198 /**
 199  * Wrap a brw_winsys buffer with a texture blanket.
 200  *
 201  * TODO UGLY
 202  */
 203 struct pipe_texture *
 204 brw_texture_blanket_winsys_buffer(struct pipe_screen *screen,
 205                                   const struct pipe_texture *template,
 206                                   const unsigned pitch,
 207                                   struct brw_winsys_buffer *buffer);
 208
 209
 210
 211
 212 #endif