зеркало из https://github.com/mozilla/gecko-dev.git
84 строки
2.8 KiB
C++
84 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim: set ts=8 sts=4 et sw=4 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GfxTexturesReporter.h"
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#include "GLDefs.h"
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using namespace mozilla;
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using namespace mozilla::gl;
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int64_t GfxTexturesReporter::sAmount = 0;
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static uint32_t GetBitsPerTexel(GLenum format, GLenum type)
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{
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// If there is no defined format or type, we're not taking up any memory
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if (!format || !type) {
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return 0;
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}
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if (format == LOCAL_GL_DEPTH_COMPONENT) {
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if (type == LOCAL_GL_UNSIGNED_SHORT)
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return 2;
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else if (type == LOCAL_GL_UNSIGNED_INT)
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return 4;
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} else if (format == LOCAL_GL_DEPTH_STENCIL) {
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if (type == LOCAL_GL_UNSIGNED_INT_24_8_EXT)
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return 4;
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}
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if (type == LOCAL_GL_UNSIGNED_BYTE || type == LOCAL_GL_FLOAT) {
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int multiplier = type == LOCAL_GL_FLOAT ? 32 : 8;
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switch (format) {
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case LOCAL_GL_ALPHA:
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case LOCAL_GL_LUMINANCE:
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return 1 * multiplier;
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case LOCAL_GL_LUMINANCE_ALPHA:
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return 2 * multiplier;
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case LOCAL_GL_RGB:
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return 3 * multiplier;
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case LOCAL_GL_RGBA:
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return 4 * multiplier;
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case LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1:
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case LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1:
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return 2;
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case LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
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case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
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case LOCAL_GL_ATC_RGB:
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case LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1:
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case LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1:
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return 4;
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case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
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case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
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case LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA:
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case LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA:
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return 8;
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default:
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break;
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}
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} else if (type == LOCAL_GL_UNSIGNED_SHORT_4_4_4_4 ||
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type == LOCAL_GL_UNSIGNED_SHORT_5_5_5_1 ||
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type == LOCAL_GL_UNSIGNED_SHORT_5_6_5)
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{
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return 16;
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}
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MOZ_ASSERT(false);
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return 0;
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}
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/* static */ void
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GfxTexturesReporter::UpdateAmount(MemoryUse action, GLenum format,
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GLenum type, uint16_t tileSize)
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{
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uint32_t bytesPerTexel = GetBitsPerTexel(format, type) / 8;
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int64_t bytes = (int64_t)(tileSize * tileSize * bytesPerTexel);
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if (action == MemoryFreed) {
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sAmount -= bytes;
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} else {
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sAmount += bytes;
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}
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}
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