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      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       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 GLenum
    104 intel_buffer_unpurgeable(drm_intel_bo *buffer)
    105 {
    106    int retained;
    107 
    108    retained = 0;
    109    if (buffer != NULL)
    110       retained = drm_intel_bo_madvise(buffer, I915_MADV_WILLNEED);
    111 
    112    return retained ? GL_RETAINED_APPLE : GL_UNDEFINED_APPLE;
    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    (void) ctx;
    121    (void) option;
    122 
    123    return intel_buffer_unpurgeable(intel_buffer_object(obj)->buffer);
    124 }
    125 
    126 static GLenum
    127 intel_texture_object_unpurgeable(struct gl_context * ctx,
    128                                  struct gl_texture_object *obj,
    129                                  GLenum option)
    130 {
    131    struct intel_texture_object *intel;
    132 
    133    (void) ctx;
    134    (void) option;
    135 
    136    intel = intel_texture_object(obj);
    137    if (intel->mt == NULL || intel->mt->bo == NULL)
    138       return GL_UNDEFINED_APPLE;
    139 
    140    return intel_buffer_unpurgeable(intel->mt->bo);
    141 }
    142 
    143 static GLenum
    144 intel_render_object_unpurgeable(struct gl_context * ctx,
    145                                 struct gl_renderbuffer *obj,
    146                                 GLenum option)
    147 {
    148    struct intel_renderbuffer *intel;
    149 
    150    (void) ctx;
    151    (void) option;
    152 
    153    intel = intel_renderbuffer(obj);
    154    if (intel->mt == NULL)
    155       return GL_UNDEFINED_APPLE;
    156 
    157    return intel_buffer_unpurgeable(intel->mt->bo);
    158 }
    159 
    160 void
    161 brw_init_object_purgeable_functions(struct dd_function_table *functions)
    162 {
    163    functions->BufferObjectPurgeable = intel_buffer_object_purgeable;
    164    functions->TextureObjectPurgeable = intel_texture_object_purgeable;
    165    functions->RenderObjectPurgeable = intel_render_object_purgeable;
    166 
    167    functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable;
    168    functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable;
    169    functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable;
    170 }
    171