gfx/gl/GfxTexturesReporter.cpp@97036ab72558 (annotated)
gfx/gl/GfxTexturesReporter.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* vim: set ts=8 sts=4 et sw=4 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #include "GfxTexturesReporter.h" |
| michael@0 | 8 | #include "GLDefs.h" |
| michael@0 | 9 | |
| michael@0 | 10 | using namespace mozilla; |
| michael@0 | 11 | using namespace mozilla::gl; |
| michael@0 | 12 | |
| michael@0 | 13 | NS_IMPL_ISUPPORTS(GfxTexturesReporter, nsIMemoryReporter) |
| michael@0 | 14 | |
| michael@0 | 15 | int64_t GfxTexturesReporter::sAmount = 0; |
| michael@0 | 16 | |
| michael@0 | 17 | static uint32_t |
| michael@0 | 18 | GetBitsPerTexel(GLenum format, GLenum type) |
| michael@0 | 19 | { |
| michael@0 | 20 | // If there is no defined format or type, we're not taking up any memory |
| michael@0 | 21 | if (!format || !type) { |
| michael@0 | 22 | return 0; |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | if (format == LOCAL_GL_DEPTH_COMPONENT) { |
| michael@0 | 26 | if (type == LOCAL_GL_UNSIGNED_SHORT) |
| michael@0 | 27 | return 2*8; |
| michael@0 | 28 | else if (type == LOCAL_GL_UNSIGNED_INT) |
| michael@0 | 29 | return 4*8; |
| michael@0 | 30 | } else if (format == LOCAL_GL_DEPTH_STENCIL) { |
| michael@0 | 31 | if (type == LOCAL_GL_UNSIGNED_INT_24_8_EXT) |
| michael@0 | 32 | return 4*8; |
| michael@0 | 33 | } |
| michael@0 | 34 | |
| michael@0 | 35 | if (type == LOCAL_GL_UNSIGNED_BYTE || type == LOCAL_GL_FLOAT) { |
| michael@0 | 36 | uint32_t multiplier = type == LOCAL_GL_FLOAT ? 32 : 8; |
| michael@0 | 37 | switch (format) { |
| michael@0 | 38 | case LOCAL_GL_ALPHA: |
| michael@0 | 39 | case LOCAL_GL_LUMINANCE: |
| michael@0 | 40 | return 1 * multiplier; |
| michael@0 | 41 | case LOCAL_GL_LUMINANCE_ALPHA: |
| michael@0 | 42 | return 2 * multiplier; |
| michael@0 | 43 | case LOCAL_GL_RGB: |
| michael@0 | 44 | return 3 * multiplier; |
| michael@0 | 45 | case LOCAL_GL_RGBA: |
| michael@0 | 46 | return 4 * multiplier; |
| michael@0 | 47 | case LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1: |
| michael@0 | 48 | case LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1: |
| michael@0 | 49 | return 2; |
| michael@0 | 50 | case LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT: |
| michael@0 | 51 | case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: |
| michael@0 | 52 | case LOCAL_GL_ATC_RGB: |
| michael@0 | 53 | case LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1: |
| michael@0 | 54 | case LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1: |
| michael@0 | 55 | case LOCAL_GL_ETC1_RGB8_OES: |
| michael@0 | 56 | return 4; |
| michael@0 | 57 | case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: |
| michael@0 | 58 | case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: |
| michael@0 | 59 | case LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA: |
| michael@0 | 60 | case LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA: |
| michael@0 | 61 | return 8; |
| michael@0 | 62 | default: |
| michael@0 | 63 | break; |
| michael@0 | 64 | } |
| michael@0 | 65 | } else if (type == LOCAL_GL_UNSIGNED_SHORT_4_4_4_4 || |
| michael@0 | 66 | type == LOCAL_GL_UNSIGNED_SHORT_5_5_5_1 || |
| michael@0 | 67 | type == LOCAL_GL_UNSIGNED_SHORT_5_6_5) |
| michael@0 | 68 | { |
| michael@0 | 69 | return 2*8; |
| michael@0 | 70 | } |
| michael@0 | 71 | |
| michael@0 | 72 | MOZ_ASSERT(false); |
| michael@0 | 73 | return 0; |
| michael@0 | 74 | } |
| michael@0 | 75 | |
| michael@0 | 76 | /* static */ void |
| michael@0 | 77 | GfxTexturesReporter::UpdateAmount(MemoryUse action, GLenum format, |
| michael@0 | 78 | GLenum type, int32_t tileWidth, |
| michael@0 | 79 | int32_t tileHeight) |
| michael@0 | 80 | { |
| michael@0 | 81 | int64_t bitsPerTexel = GetBitsPerTexel(format, type); |
| michael@0 | 82 | int64_t bytes = int64_t(tileWidth) * int64_t(tileHeight) * bitsPerTexel/8; |
| michael@0 | 83 | if (action == MemoryFreed) { |
| michael@0 | 84 | sAmount -= bytes; |
| michael@0 | 85 | } else { |
| michael@0 | 86 | sAmount += bytes; |
| michael@0 | 87 | } |
| michael@0 | 88 | } |
