mirror of https://github.com/axmolengine/axmol.git
132 lines
4.5 KiB
C++
132 lines
4.5 KiB
C++
/****************************************************************************
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Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "Texture.h"
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#include <cassert>
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CC_BACKEND_BEGIN
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#define byte(n) ((n) * 8)
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#define bit(n) (n)
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namespace
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{
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uint8_t computeBitsPerElement(PixelFormat textureFormat)
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{
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switch (textureFormat)
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{
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case PixelFormat::RGBA8888:
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case PixelFormat::BGRA8888:
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return byte(4);
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case PixelFormat::RGB888:
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return byte(3);
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case PixelFormat::RGBA4444:
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return byte(2);
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case PixelFormat::A8:
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return byte(1);
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case PixelFormat::I8:
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return byte(1);
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case PixelFormat::RGB565:
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return byte(2);
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case PixelFormat::RGB5A1:
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return byte(2);
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case PixelFormat::AI88:
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return byte(2);
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case PixelFormat::ETC:
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return bit(4);
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case PixelFormat::ATC_RGB:
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return bit(4);
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case PixelFormat::ATC_EXPLICIT_ALPHA:
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return byte(1);
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case PixelFormat::ATC_INTERPOLATED_ALPHA:
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return byte(1);
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case PixelFormat::PVRTC2:
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return bit(2);
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case PixelFormat::PVRTC2A:
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return bit(2);
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case PixelFormat::PVRTC4:
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return bit(4);
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case PixelFormat::PVRTC4A:
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return bit(4);
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case PixelFormat::S3TC_DXT1:
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return bit(4);
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case PixelFormat::S3TC_DXT3:
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return byte(1);
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case PixelFormat::S3TC_DXT5:
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return byte(1);
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case PixelFormat::MTL_BGR5A1:
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return byte(2);
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case PixelFormat::MTL_B5G6R5:
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return byte(2);
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case PixelFormat::MTL_ABGR4:
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return byte(2);
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case PixelFormat::D24S8:
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
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//ios use MTLPixelFormatDepth32Float_Stencil8 as DepthStencil combined format, its 64 bits
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return byte(8);
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#else
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//mac and opengl use Depth24_Stnicl8 combined format, its 32 bits
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return byte(4);
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#endif
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default:
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return byte(0); //"textureFormat pixel size in bytes not defined!";
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}
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return 0;
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}
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}
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TextureBackend::TextureBackend(const TextureDescriptor& descriptor)
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: _bitsPerElement(computeBitsPerElement(descriptor.textureFormat))
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, _width(descriptor.width)
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, _height(descriptor.height)
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, _textureType(descriptor.textureType)
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, _textureFormat(descriptor.textureFormat)
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, _textureUsage(descriptor.textureUsage)
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{
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}
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TextureBackend::~TextureBackend()
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{}
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void TextureBackend::updateTextureDescriptor(const cocos2d::backend::TextureDescriptor &descriptor)
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{
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_bitsPerElement = computeBitsPerElement(descriptor.textureFormat);
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_textureType = descriptor.textureType;
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_textureFormat = descriptor.textureFormat;
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_textureUsage = descriptor.textureUsage;
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_width = descriptor.width;
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_height = descriptor.height;
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}
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Texture2DBackend::Texture2DBackend(const TextureDescriptor& descriptor)
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: TextureBackend(descriptor)
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{
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}
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TextureCubemapBackend::TextureCubemapBackend(const TextureDescriptor &descriptor)
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: TextureBackend(descriptor)
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{
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}
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CC_BACKEND_END
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