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
  31 struct brw_winsys;
  32 struct pipe_fence_handle;
  33
  34 /* This currently just wraps dri_bo:
  35  */
  36 struct brw_winsys_buffer {
  37    struct brw_winsys_screen *sws;
  38    void *bo;
  39    unsigned offset;
  40    unsigned size;
  41 };
  42
  43 enum brw_buffer_usage {
  44    I915_GEM_DOMAIN_RENDER,
  45    I915_GEM_DOMAIN_SAMPLER,
  46    I915_GEM_DOMAIN_VERTEX,
  47    I915_GEM_DOMAIN_INSTRUCTION,
  48
  49
  50    /* XXX: migrate from domains to explicit usage cases, eg below:
  51     */
  52
  53    /* use on textures */
  54    BRW_USAGE_RENDER    = 0x01,
  55    BRW_USAGE_SAMPLER   = 0x02,
  56    BRW_USAGE_2D_TARGET = 0x04,
  57    BRW_USAGE_2D_SOURCE = 0x08,
  58    /* use on vertex */
  59    BRW_USAGE_VERTEX    = 0x10,
  60 };
  61
  62 enum brw_buffer_type
  63 {
  64    BRW_BUFFER_TYPE_TEXTURE,
  65    BRW_BUFFER_TYPE_SCANOUT, /**< a texture used for scanning out from */
  66    BRW_BUFFER_TYPE_VERTEX,
  67    BRW_BUFFER_TYPE_CURBE,
  68    BRW_BUFFER_TYPE_QUERY,
  69    BRW_BUFFER_TYPE_SHADER_CONSTANTS,
  70    BRW_BUFFER_TYPE_WM_SCRATCH,
  71    BRW_BUFFER_TYPE_BATCH,
  72    BRW_BUFFER_TYPE_STATE_CACHE,
  73 };
  74
  75 struct brw_winsys_screen {
  76
  77
  78    /**
  79     * Buffer functions.
  80     */
  81
  82    /*@{*/
  83    /**
  84     * Create a buffer.
  85     */
  86    struct brw_winsys_buffer *(*bo_alloc)( struct brw_winsys_screen *sws,
  87                                           enum brw_buffer_type type,
  88                                           unsigned size,
  89                                           unsigned alignment );
  90
  91    /* Reference and unreference buffers:
  92     */
  93    void (*bo_reference)( struct brw_winsys_buffer *buffer );
  94    void (*bo_unreference)( struct brw_winsys_buffer *buffer );
  95
  96    /* XXX: parameter names!!
  97     */
  98    int (*bo_emit_reloc)( struct brw_winsys_buffer *buffer,
  99                          unsigned domain,
 100                          unsigned a,
 101                          unsigned b,
 102                          unsigned offset,
 103                          struct brw_winsys_buffer *b2);
 104
 105    int (*bo_exec)( struct brw_winsys_buffer *buffer,
 106                    unsigned bytes_used,
 107                    void *foo,
 108                    int a,
 109                    int b );
 110
 111    void (*bo_subdata)(struct brw_winsys_buffer *buffer,
 112                       size_t offset,
 113                       size_t size,
 114                       const void *data);
 115
 116    boolean (*bo_is_busy)(struct brw_winsys_buffer *buffer);
 117    boolean (*bo_references)(struct brw_winsys_buffer *a,
 118                             struct brw_winsys_buffer *b);
 119
 120    /* XXX: couldn't this be handled by returning true/false on
 121     * bo_emit_reloc?
 122     */
 123    boolean (*check_aperture_space)( struct brw_winsys_screen *iws,
 124                                     struct brw_winsys_buffer **buffers,
 125                                     unsigned count );
 126
 127    /**
 128     * Map a buffer.
 129     */
 130    void *(*bo_map)(struct brw_winsys_buffer *buffer,
 131                    boolean write);
 132
 133    /**
 134     * Unmap a buffer.
 135     */
 136    void (*bo_unmap)(struct brw_winsys_buffer *buffer);
 137    /*@}*/
 138
 139
 140
 141
 142    /**
 143     * Destroy the winsys.
 144     */
 145    void (*destroy)(struct brw_winsys *iws);
 146 };
 147
 148
 149 /**
 150  * Create brw pipe_screen.
 151  */
 152 struct pipe_screen *brw_create_screen(struct brw_winsys *iws, unsigned pci_id);
 153
 154 /**
 155  * Create a brw pipe_context.
 156  */
 157 struct pipe_context *brw_create_context(struct pipe_screen *screen);
 158
 159 /**
 160  * Get the brw_winsys buffer backing the texture.
 161  *
 162  * TODO UGLY
 163  */
 164 struct pipe_texture;
 165 boolean brw_get_texture_buffer_brw(struct pipe_texture *texture,
 166                                     struct brw_winsys_buffer **buffer,
 167                                     unsigned *stride);
 168
 169 /**
 170  * Wrap a brw_winsys buffer with a texture blanket.
 171  *
 172  * TODO UGLY
 173  */
 174 struct pipe_texture * brw_texture_blanket_ws(struct pipe_screen *screen,
 175                                              const struct pipe_texture *tmplt,
 176                                              const unsigned *stride,
 177                                              struct brw_winsys_buffer *buffer);
 178
 179
 180
 181
 182 #endif