michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* vim: set ts=8 sts=4 et sw=4 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "GfxTexturesReporter.h"
michael@0: #include "GLDefs.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::gl;
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(GfxTexturesReporter, nsIMemoryReporter)
michael@0: 
michael@0: int64_t GfxTexturesReporter::sAmount = 0;
michael@0: 
michael@0: static uint32_t
michael@0: GetBitsPerTexel(GLenum format, GLenum type)
michael@0: {
michael@0:     // If there is no defined format or type, we're not taking up any memory
michael@0:     if (!format || !type) {
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     if (format == LOCAL_GL_DEPTH_COMPONENT) {
michael@0:         if (type == LOCAL_GL_UNSIGNED_SHORT)
michael@0:             return 2*8;
michael@0:         else if (type == LOCAL_GL_UNSIGNED_INT)
michael@0:             return 4*8;
michael@0:     } else if (format == LOCAL_GL_DEPTH_STENCIL) {
michael@0:         if (type == LOCAL_GL_UNSIGNED_INT_24_8_EXT)
michael@0:             return 4*8;
michael@0:     }
michael@0: 
michael@0:     if (type == LOCAL_GL_UNSIGNED_BYTE || type == LOCAL_GL_FLOAT) {
michael@0:         uint32_t multiplier = type == LOCAL_GL_FLOAT ? 32 : 8;
michael@0:         switch (format) {
michael@0:             case LOCAL_GL_ALPHA:
michael@0:             case LOCAL_GL_LUMINANCE:
michael@0:                 return 1 * multiplier;
michael@0:             case LOCAL_GL_LUMINANCE_ALPHA:
michael@0:                 return 2 * multiplier;
michael@0:             case LOCAL_GL_RGB:
michael@0:                 return 3 * multiplier;
michael@0:             case LOCAL_GL_RGBA:
michael@0:                 return 4 * multiplier;
michael@0:             case LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1:
michael@0:             case LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1:
michael@0:                 return 2;
michael@0:             case LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
michael@0:             case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
michael@0:             case LOCAL_GL_ATC_RGB:
michael@0:             case LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1:
michael@0:             case LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1:
michael@0:             case LOCAL_GL_ETC1_RGB8_OES:
michael@0:                 return 4;
michael@0:             case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
michael@0:             case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
michael@0:             case LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA:
michael@0:             case LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA:
michael@0:                 return 8;
michael@0:             default:
michael@0:                 break;
michael@0:         }
michael@0:     } else if (type == LOCAL_GL_UNSIGNED_SHORT_4_4_4_4 ||
michael@0:                type == LOCAL_GL_UNSIGNED_SHORT_5_5_5_1 ||
michael@0:                type == LOCAL_GL_UNSIGNED_SHORT_5_6_5)
michael@0:     {
michael@0:         return 2*8;
michael@0:     }
michael@0: 
michael@0:     MOZ_ASSERT(false);
michael@0:     return 0;
michael@0: }
michael@0: 
michael@0: /* static */ void
michael@0: GfxTexturesReporter::UpdateAmount(MemoryUse action, GLenum format,
michael@0:                                   GLenum type, int32_t tileWidth,
michael@0:                                   int32_t tileHeight)
michael@0: {
michael@0:     int64_t bitsPerTexel = GetBitsPerTexel(format, type);
michael@0:     int64_t bytes = int64_t(tileWidth) * int64_t(tileHeight) * bitsPerTexel/8;
michael@0:     if (action == MemoryFreed) {
michael@0:         sAmount -= bytes;
michael@0:     } else {
michael@0:         sAmount += bytes;
michael@0:     }
michael@0: }