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 "util/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(struct brw_bo *buffer)
  42 {
  43    int retained = 0;
  44
  45    if (buffer != NULL)
  46       retained = brw_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       return intel_buffer_purgeable(intel_obj->buffer);
  66    }
  67 }
  68
  69 static GLenum
  70 intel_texture_object_purgeable(struct gl_context * ctx,
  71                                struct gl_texture_object *obj,
  72                                GLenum option)
  73 {
  74    struct intel_texture_object *intel;
  75
  76    (void) ctx;
  77    (void) option;
  78
  79    intel = intel_texture_object(obj);
  80    if (intel->mt == NULL || intel->mt->bo == NULL)
  81       return GL_RELEASED_APPLE;
  82
  83    return intel_buffer_purgeable(intel->mt->bo);
  84 }
  85
  86 static GLenum
  87 intel_render_object_purgeable(struct gl_context * ctx,
  88                               struct gl_renderbuffer *obj,
  89                               GLenum option)
  90 {
  91    struct intel_renderbuffer *intel;
  92
  93    (void) ctx;
  94    (void) option;
  95
  96    intel = intel_renderbuffer(obj);
  97    if (intel->mt == NULL)
  98       return GL_RELEASED_APPLE;
  99
 100    return intel_buffer_purgeable(intel->mt->bo);
 101 }
 102
 103 static int
 104 intel_bo_unpurgeable(struct brw_bo *buffer)
 105 {
 106    int retained;
 107
 108    retained = 0;
 109    if (buffer != NULL)
 110       retained = brw_bo_madvise(buffer, I915_MADV_WILLNEED);
 111
 112    return retained;
 113 }
 114
 115 static GLenum
 116 intel_buffer_object_unpurgeable(struct gl_context * ctx,
 117                                 struct gl_buffer_object *obj,
 118                                 GLenum option)
 119 {
 120    struct intel_buffer_object *intel = intel_buffer_object(obj);
 121
 122    (void) ctx;
 123
 124    if (!intel->buffer)
 125       return GL_UNDEFINED_APPLE;
 126
 127    if (option == GL_UNDEFINED_APPLE || !intel_bo_unpurgeable(intel->buffer)) {
 128       brw_bo_unreference(intel->buffer);
 129       intel->buffer = NULL;
 130       return GL_UNDEFINED_APPLE;
 131    }
 132
 133    return GL_RETAINED_APPLE;
 134 }
 135
 136 static GLenum
 137 intel_texture_object_unpurgeable(struct gl_context * ctx,
 138                                  struct gl_texture_object *obj,
 139                                  GLenum option)
 140 {
 141    struct intel_texture_object *intel;
 142
 143    (void) ctx;
 144
 145    intel = intel_texture_object(obj);
 146    if (intel->mt == NULL || intel->mt->bo == NULL)
 147       return GL_UNDEFINED_APPLE;
 148
 149    if (option == GL_UNDEFINED_APPLE || !intel_bo_unpurgeable(intel->mt->bo)) {
 150       intel_miptree_release(&intel->mt);
 151       return GL_UNDEFINED_APPLE;
 152    }
 153
 154    return GL_RETAINED_APPLE;
 155 }
 156
 157 static GLenum
 158 intel_render_object_unpurgeable(struct gl_context * ctx,
 159                                 struct gl_renderbuffer *obj,
 160                                 GLenum option)
 161 {
 162    struct intel_renderbuffer *intel;
 163
 164    (void) ctx;
 165
 166    intel = intel_renderbuffer(obj);
 167    if (intel->mt == NULL)
 168       return GL_UNDEFINED_APPLE;
 169
 170    if (option == GL_UNDEFINED_APPLE || !intel_bo_unpurgeable(intel->mt->bo)) {
 171       intel_miptree_release(&intel->mt);
 172       return GL_UNDEFINED_APPLE;
 173    }
 174
 175    return GL_RETAINED_APPLE;
 176 }
 177
 178 void
 179 brw_init_object_purgeable_functions(struct dd_function_table *functions)
 180 {
 181    functions->BufferObjectPurgeable = intel_buffer_object_purgeable;
 182    functions->TextureObjectPurgeable = intel_texture_object_purgeable;
 183    functions->RenderObjectPurgeable = intel_render_object_purgeable;
 184
 185    functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable;
 186    functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable;
 187    functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable;
 188 }