src/mesa/drivers/dri/i965/brw_object_purgeable.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * @file brw_object_purgeable.c
  26  *
  27  * The driver implementation of the GL_APPLE_object_purgeable extension.
  28  */
  29
  30 #include "main/imports.h"
  31 #include "main/mtypes.h"
  32 #include "main/macros.h"
  33 #include "main/bufferobj.h"
  34
  35 #include "brw_context.h"
  36 #include "intel_buffer_objects.h"
  37 #include "intel_fbo.h"
  38 #include "intel_mipmap_tree.h"
  39
  40 static GLenum
  41 intel_buffer_purgeable(drm_intel_bo *buffer)
  42 {
  43    int retained = 0;
  44
  45    if (buffer != NULL)
  46       retained = drm_intel_bo_madvise(buffer, I915_MADV_DONTNEED);
  47
  48    return retained ? GL_VOLATILE_APPLE : GL_RELEASED_APPLE;
  49 }
  50
  51 static GLenum
  52 intel_buffer_object_purgeable(struct gl_context * ctx,
  53                               struct gl_buffer_object *obj,
  54                               GLenum option)
  55 {
  56    struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
  57
  58    if (intel_obj->buffer != NULL)
  59       return intel_buffer_purgeable(intel_obj->buffer);
  60
  61    if (option == GL_RELEASED_APPLE) {
  62       return GL_RELEASED_APPLE;
  63    } else {
  64       /* XXX Create the buffer and madvise(MADV_DONTNEED)? */
  65       struct brw_context *brw = brw_context(ctx);
  66       drm_intel_bo *bo = intel_bufferobj_buffer(brw, intel_obj, INTEL_READ);
  67
  68       return intel_buffer_purgeable(bo);
  69    }
  70 }
  71
  72 static GLenum
  73 intel_texture_object_purgeable(struct gl_context * ctx,
  74                                struct gl_texture_object *obj,
  75                                GLenum option)
  76 {
  77    struct intel_texture_object *intel;
  78
  79    (void) ctx;
  80    (void) option;
  81
  82    intel = intel_texture_object(obj);
  83    if (intel->mt == NULL || intel->mt->region == NULL)
  84       return GL_RELEASED_APPLE;
  85
  86    return intel_buffer_purgeable(intel->mt->region->bo);
  87 }
  88
  89 static GLenum
  90 intel_render_object_purgeable(struct gl_context * ctx,
  91                               struct gl_renderbuffer *obj,
  92                               GLenum option)
  93 {
  94    struct intel_renderbuffer *intel;
  95
  96    (void) ctx;
  97    (void) option;
  98
  99    intel = intel_renderbuffer(obj);
 100    if (intel->mt == NULL)
 101       return GL_RELEASED_APPLE;
 102
 103    return intel_buffer_purgeable(intel->mt->region->bo);
 104 }
 105
 106 static GLenum
 107 intel_buffer_unpurgeable(drm_intel_bo *buffer)
 108 {
 109    int retained;
 110
 111    retained = 0;
 112    if (buffer != NULL)
 113       retained = drm_intel_bo_madvise(buffer, I915_MADV_WILLNEED);
 114
 115    return retained ? GL_RETAINED_APPLE : GL_UNDEFINED_APPLE;
 116 }
 117
 118 static GLenum
 119 intel_buffer_object_unpurgeable(struct gl_context * ctx,
 120                                 struct gl_buffer_object *obj,
 121                                 GLenum option)
 122 {
 123    (void) ctx;
 124    (void) option;
 125
 126    return intel_buffer_unpurgeable(intel_buffer_object(obj)->buffer);
 127 }
 128
 129 static GLenum
 130 intel_texture_object_unpurgeable(struct gl_context * ctx,
 131                                  struct gl_texture_object *obj,
 132                                  GLenum option)
 133 {
 134    struct intel_texture_object *intel;
 135
 136    (void) ctx;
 137    (void) option;
 138
 139    intel = intel_texture_object(obj);
 140    if (intel->mt == NULL || intel->mt->region == NULL)
 141       return GL_UNDEFINED_APPLE;
 142
 143    return intel_buffer_unpurgeable(intel->mt->region->bo);
 144 }
 145
 146 static GLenum
 147 intel_render_object_unpurgeable(struct gl_context * ctx,
 148                                 struct gl_renderbuffer *obj,
 149                                 GLenum option)
 150 {
 151    struct intel_renderbuffer *intel;
 152
 153    (void) ctx;
 154    (void) option;
 155
 156    intel = intel_renderbuffer(obj);
 157    if (intel->mt == NULL)
 158       return GL_UNDEFINED_APPLE;
 159
 160    return intel_buffer_unpurgeable(intel->mt->region->bo);
 161 }
 162
 163 void
 164 brw_init_object_purgeable_functions(struct dd_function_table *functions)
 165 {
 166    functions->BufferObjectPurgeable = intel_buffer_object_purgeable;
 167    functions->TextureObjectPurgeable = intel_texture_object_purgeable;
 168    functions->RenderObjectPurgeable = intel_render_object_purgeable;
 169
 170    functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable;
 171    functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable;
 172    functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable;
 173 }