mirror of https://github.com/axmolengine/axmol.git
492 lines
17 KiB
Plaintext
492 lines
17 KiB
Plaintext
/****************************************************************************
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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 "TextureMTL.h"
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#include "Utils.h"
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#include "base/ccMacros.h"
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CC_BACKEND_BEGIN
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namespace
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{
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MTLSamplerAddressMode toMTLSamplerAddressMode(SamplerAddressMode mode)
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{
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MTLSamplerAddressMode ret = MTLSamplerAddressModeRepeat;
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switch (mode) {
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case SamplerAddressMode::REPEAT:
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ret = MTLSamplerAddressModeRepeat;
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break;
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case SamplerAddressMode::MIRROR_REPEAT:
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ret = MTLSamplerAddressModeMirrorRepeat;
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break;
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case SamplerAddressMode::CLAMP_TO_EDGE:
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ret = MTLSamplerAddressModeClampToEdge;
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break;
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default:
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CCASSERT(false, "Not supported sampler address mode!");
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break;
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}
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return ret;
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}
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MTLSamplerMinMagFilter toMTLSamplerMinMagFilter(SamplerFilter mode)
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{
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switch (mode) {
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case SamplerFilter::NEAREST:
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case SamplerFilter::NEAREST_MIPMAP_LINEAR:
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case SamplerFilter::NEAREST_MIPMAP_NEAREST:
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return MTLSamplerMinMagFilterNearest;
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case SamplerFilter::LINEAR:
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case SamplerFilter::LINEAR_MIPMAP_LINEAR:
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case SamplerFilter::LINEAR_MIPMAP_NEAREST:
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return MTLSamplerMinMagFilterLinear;
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case SamplerFilter::DONT_CARE:
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return MTLSamplerMinMagFilterNearest;
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}
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}
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void convertRGB2RGBA(uint8_t* src, uint8_t* dst, std::size_t length)
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{
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for (std::size_t i = 0; i < length; ++i)
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{
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*dst++ = *src++;
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*dst++ = *src++;
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*dst++ = *src++;
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*dst++ = 255;
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}
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}
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bool convertData(uint8_t* src, std::size_t length, PixelFormat format, uint8_t** out)
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{
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*out = src;
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bool converted = false;
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switch (format)
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{
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case PixelFormat::RGB888:
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{
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*out = (uint8_t*)malloc(length * 4);
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convertRGB2RGBA(src, *out, length);
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converted = true;
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}
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break;
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default:
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break;
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}
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return converted;
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}
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bool isColorRenderable(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::RGB888:
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case PixelFormat::RGBA4444:
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case PixelFormat::RGB565:
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case PixelFormat::RGB5A1:
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case PixelFormat::MTL_BGR5A1:
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case PixelFormat::MTL_B5G6R5:
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case PixelFormat::MTL_ABGR4:
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return true;
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default:
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return false;
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}
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}
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std::size_t getBytesPerRowETC(MTLPixelFormat pixleFormat, std::size_t width)
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{
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std::size_t bytesPerRow = 0;
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
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uint32_t bytesPerBlock = 0, blockWidth = 4;
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switch (pixleFormat) {
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case MTLPixelFormatETC2_RGB8:
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case MTLPixelFormatETC2_RGB8A1:
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case MTLPixelFormatEAC_R11Unorm:
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bytesPerBlock = 8;
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break;
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case MTLPixelFormatEAC_RGBA8:
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case MTLPixelFormatEAC_RG11Unorm:
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bytesPerBlock = 16;
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break;
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default:
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CCASSERT(false, "Not supported ETC format!");
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break;
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}
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auto blocksPerRow = (width + (blockWidth - 1)) / blockWidth;
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bytesPerRow = blocksPerRow * bytesPerBlock;
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#endif
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return bytesPerRow;
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}
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std::size_t getBytesPerRowS3TC(MTLPixelFormat pixleFormat, std::size_t width)
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{
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std::size_t bytesPerRow = 0;
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC)
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uint32_t bytesPerBlock = 0, blockWidth = 4;
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switch (pixleFormat) {
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case MTLPixelFormatBC1_RGBA:
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bytesPerBlock = 8;
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break;
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case MTLPixelFormatBC2_RGBA:
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case MTLPixelFormatBC3_RGBA:
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bytesPerBlock = 16;
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break;
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default:
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break;
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}
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auto blocksPerRow = (width + (blockWidth - 1)) / blockWidth;
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bytesPerRow = blocksPerRow * bytesPerBlock;
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#endif
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return bytesPerRow;
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}
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std::size_t getBytesPerRow(PixelFormat textureFormat, std::size_t width, std::size_t bitsPerElement)
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{
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MTLPixelFormat pixelFormat = Utils::toMTLPixelFormat(textureFormat);
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std::size_t bytesPerRow = 0;
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if(textureFormat >= PixelFormat::PVRTC4 &&
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textureFormat <= PixelFormat::PVRTC2A)
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{
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bytesPerRow = 0;
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}
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else if (textureFormat == PixelFormat::ETC)
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{
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bytesPerRow = getBytesPerRowETC(pixelFormat, width);
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}
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else if(textureFormat >= PixelFormat::S3TC_DXT1 &&
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textureFormat <= PixelFormat::S3TC_DXT5)
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{
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bytesPerRow = getBytesPerRowS3TC(pixelFormat, width);
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}
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else
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{
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bytesPerRow = width * bitsPerElement / 8;
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}
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return bytesPerRow;
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}
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}
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TextureMTL::TextureMTL(id<MTLDevice> mtlDevice, const TextureDescriptor& descriptor)
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: backend::Texture2DBackend(descriptor)
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{
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_mtlDevice = mtlDevice;
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updateTextureDescriptor(descriptor);
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}
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TextureMTL::~TextureMTL()
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{
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[_mtlTexture release];
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[_mtlSamplerState release];
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}
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void TextureMTL::updateSamplerDescriptor(const SamplerDescriptor &sampler)
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{
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createSampler(_mtlDevice, sampler);
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}
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void TextureMTL::updateTextureDescriptor(const cocos2d::backend::TextureDescriptor &descriptor)
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{
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TextureBackend::updateTextureDescriptor(descriptor);
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createTexture(_mtlDevice, descriptor);
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updateSamplerDescriptor(descriptor.samplerDescriptor);
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if (PixelFormat::RGB888 == _textureFormat)
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{
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_bitsPerElement = 4 * 8;
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}
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_bytesPerRow = descriptor.width * _bitsPerElement / 8 ;
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}
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void TextureMTL::updateData(uint8_t* data, std::size_t width , std::size_t height, std::size_t level)
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{
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updateSubData(0, 0, width, height, level, data);
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}
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void TextureMTL::updateSubData(std::size_t xoffset, std::size_t yoffset, std::size_t width, std::size_t height, std::size_t level, uint8_t* data)
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{
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MTLRegion region =
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{
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{xoffset, yoffset, 0}, // MTLOrigin
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{width, height, 1} // MTLSize
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};
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uint8_t* convertedData = nullptr;
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bool converted = convertData(data,
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width * height,
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_textureFormat, &convertedData);
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std::size_t bytesPerRow = getBytesPerRow(_textureFormat, width, _bitsPerElement);
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[_mtlTexture replaceRegion:region
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mipmapLevel:level
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withBytes:convertedData
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bytesPerRow:bytesPerRow];
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if (converted)
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free(convertedData);
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if(!_hasMipmaps && level > 0)
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_hasMipmaps = true;
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}
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void TextureMTL::updateCompressedData(uint8_t *data, std::size_t width, std::size_t height, std::size_t dataLen, std::size_t level)
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{
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updateCompressedSubData(0, 0, width, height, dataLen, level, data);
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}
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void TextureMTL::updateCompressedSubData(std::size_t xoffset, std::size_t yoffset, std::size_t width, std::size_t height, std::size_t dataLen, std::size_t level, uint8_t *data)
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{
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updateSubData(xoffset, yoffset, width, height, level, data);
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}
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void TextureMTL::createTexture(id<MTLDevice> mtlDevice, const TextureDescriptor& descriptor)
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{
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MTLPixelFormat pixelFormat = Utils::toMTLPixelFormat(descriptor.textureFormat);
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if(pixelFormat == MTLPixelFormatInvalid)
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return;
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MTLTextureDescriptor* textureDescriptor =
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[MTLTextureDescriptor texture2DDescriptorWithPixelFormat:pixelFormat
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width:descriptor.width
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height:descriptor.height
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mipmapped:YES];
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if (TextureUsage::RENDER_TARGET == descriptor.textureUsage)
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{
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//DepthStencil, and Multisample textures must be allocated with the MTLResourceStorageModePrivate resource option
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if(PixelFormat::D24S8 == descriptor.textureFormat)
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textureDescriptor.resourceOptions = MTLResourceStorageModePrivate;
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textureDescriptor.usage = MTLTextureUsageRenderTarget | MTLTextureUsageShaderRead;
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}
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if(_mtlTexture)
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[_mtlTexture release];
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_mtlTexture = [mtlDevice newTextureWithDescriptor:textureDescriptor];
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}
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void TextureMTL::createSampler(id<MTLDevice> mtlDevice, const SamplerDescriptor &descriptor)
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{
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MTLSamplerDescriptor *mtlDescriptor = [MTLSamplerDescriptor new];
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mtlDescriptor.sAddressMode = descriptor.sAddressMode == SamplerAddressMode::DONT_CARE ? _sAddressMode : toMTLSamplerAddressMode(descriptor.sAddressMode);
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mtlDescriptor.tAddressMode = descriptor.tAddressMode == SamplerAddressMode::DONT_CARE ? _tAddressMode : toMTLSamplerAddressMode(descriptor.tAddressMode);
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mtlDescriptor.minFilter = descriptor.minFilter == SamplerFilter::DONT_CARE ? _minFilter : toMTLSamplerMinMagFilter(descriptor.minFilter);
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mtlDescriptor.magFilter = descriptor.magFilter == SamplerFilter::DONT_CARE ? _magFilter : toMTLSamplerMinMagFilter(descriptor.magFilter);
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if(_mtlSamplerState)
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{
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[_mtlSamplerState release];
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_mtlSamplerState = nil;
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}
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_sAddressMode = mtlDescriptor.sAddressMode;
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_tAddressMode = mtlDescriptor.tAddressMode;
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_minFilter = mtlDescriptor.minFilter;
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_magFilter = mtlDescriptor.magFilter;
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_mipFilter = mtlDescriptor.mipFilter;
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_mtlSamplerState = [mtlDevice newSamplerStateWithDescriptor:mtlDescriptor];
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[mtlDescriptor release];
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}
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void TextureMTL::getBytes(std::size_t x, std::size_t y, std::size_t width, std::size_t height, bool flipImage, std::function<void(const unsigned char*, std::size_t, std::size_t)> callback)
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{
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CC_ASSERT(width <= _width && height <= _height);
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auto bitsPerElement = _bitsPerElement;
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auto flipImageFunc = [callback, flipImage, bitsPerElement](const unsigned char* image, int width, int height){
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//consistent with opengl behavior
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auto bytePerRow = width * bitsPerElement / 8;
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if(!flipImage)
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{
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unsigned char* flippedImage = new unsigned char[bytePerRow * height];
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for (int i = 0; i < height; ++i)
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{
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memcpy(&flippedImage[i * bytePerRow],
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&image[(height - i - 1) * bytePerRow],
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bytePerRow);
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}
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callback(flippedImage, width, height);
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CC_SAFE_DELETE_ARRAY(flippedImage);
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}
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else
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{
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callback(image, width, height);
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}
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};
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auto flipImageCallback = std::bind(flipImageFunc, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
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Utils::getTextureBytes(x, y, width, height, _mtlTexture, flipImageCallback);
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}
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void TextureMTL::generateMipmaps()
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{
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if (TextureUsage::RENDER_TARGET == _textureUsage || isColorRenderable(_textureFormat) == false)
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return;
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if(!_hasMipmaps)
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{
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_hasMipmaps = true;
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Utils::generateMipmaps(_mtlTexture);
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}
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}
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TextureCubeMTL::TextureCubeMTL(id<MTLDevice> mtlDevice, const TextureDescriptor& descriptor)
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: backend::TextureCubemapBackend(descriptor)
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{
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_mtlDevice = mtlDevice;
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updateTextureDescriptor(descriptor);
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}
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TextureCubeMTL::~TextureCubeMTL()
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{
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[_mtlTexture release];
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[_mtlSamplerState release];
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}
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void TextureCubeMTL::updateTextureDescriptor(const cocos2d::backend::TextureDescriptor &descriptor)
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{
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TextureBackend::updateTextureDescriptor(descriptor);
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createTexture(_mtlDevice, descriptor);
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updateSamplerDescriptor(descriptor.samplerDescriptor);
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// Metal doesn't support RGB888/RGBA4444, so should convert to RGBA888;
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if (PixelFormat::RGB888 == _textureFormat)
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{
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_bitsPerElement = 4 * 8;
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}
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_bytesPerRow = descriptor.width * _bitsPerElement / 8 ;
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_bytesPerImage = _bytesPerRow * descriptor.width;
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_region = MTLRegionMake2D(0, 0, descriptor.width, descriptor.height);
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}
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void TextureCubeMTL::createTexture(id<MTLDevice> mtlDevice, const TextureDescriptor& descriptor)
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{
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MTLPixelFormat pixelFormat = Utils::toMTLPixelFormat(descriptor.textureFormat);
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if(pixelFormat == MTLPixelFormatInvalid)
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return;
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MTLTextureDescriptor* textureDescriptor =
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[MTLTextureDescriptor textureCubeDescriptorWithPixelFormat:pixelFormat size:descriptor.width mipmapped:YES];
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if (TextureUsage::RENDER_TARGET == descriptor.textureUsage)
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{
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textureDescriptor.resourceOptions = MTLResourceStorageModePrivate;
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textureDescriptor.usage = MTLTextureUsageRenderTarget | MTLTextureUsageShaderRead;
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}
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if(_mtlTexture)
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[_mtlTexture release];
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_mtlTexture = [mtlDevice newTextureWithDescriptor:textureDescriptor];
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}
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void TextureCubeMTL::createSampler(id<MTLDevice> mtlDevice, const SamplerDescriptor &descriptor)
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{
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MTLSamplerDescriptor *mtlDescriptor = [MTLSamplerDescriptor new];
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mtlDescriptor.sAddressMode = descriptor.sAddressMode == SamplerAddressMode::DONT_CARE ? _sAddressMode : toMTLSamplerAddressMode(descriptor.sAddressMode);
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mtlDescriptor.tAddressMode = descriptor.tAddressMode == SamplerAddressMode::DONT_CARE ? _tAddressMode : toMTLSamplerAddressMode(descriptor.tAddressMode);
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mtlDescriptor.minFilter = descriptor.minFilter == SamplerFilter::DONT_CARE ? _minFilter : toMTLSamplerMinMagFilter(descriptor.minFilter);
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mtlDescriptor.magFilter = descriptor.magFilter == SamplerFilter::DONT_CARE ? _magFilter : toMTLSamplerMinMagFilter(descriptor.magFilter);
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if(_mtlSamplerState)
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{
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[_mtlSamplerState release];
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_mtlSamplerState = nil;
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}
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_sAddressMode = mtlDescriptor.sAddressMode;
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_tAddressMode = mtlDescriptor.tAddressMode;
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_minFilter = mtlDescriptor.minFilter;
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_magFilter = mtlDescriptor.magFilter;
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_mipFilter = mtlDescriptor.mipFilter;
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_mtlSamplerState = [mtlDevice newSamplerStateWithDescriptor:mtlDescriptor];
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[mtlDescriptor release];
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}
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void TextureCubeMTL::updateSamplerDescriptor(const SamplerDescriptor &sampler)
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{
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createSampler(_mtlDevice, sampler);
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}
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void TextureCubeMTL::updateFaceData(TextureCubeFace side, void *data)
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{
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NSUInteger slice = static_cast<int>(side);
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[_mtlTexture replaceRegion:_region
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mipmapLevel:0
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slice:slice
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withBytes:data
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bytesPerRow:_bytesPerRow
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bytesPerImage:_bytesPerImage];
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}
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void TextureCubeMTL::getBytes(std::size_t x, std::size_t y, std::size_t width, std::size_t height, bool flipImage, std::function<void(const unsigned char*, std::size_t, std::size_t)> callback)
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{
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CC_ASSERT(width <= _mtlTexture.width && height <= _mtlTexture.height);
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auto bitsPerElement = _bitsPerElement;
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auto flipImageFunc = [callback, flipImage, bitsPerElement](const unsigned char* image, int width, int height){
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//consistent with opengl behavior
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auto bytePerRow = width * bitsPerElement / 8;
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if(!flipImage)
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{
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unsigned char* flippedImage = new unsigned char[bytePerRow * height];
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for (int i = 0; i < height; ++i)
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{
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memcpy(&flippedImage[i * bytePerRow],
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&image[(height - i - 1) * bytePerRow],
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bytePerRow);
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}
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callback(flippedImage, width, height);
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CC_SAFE_DELETE_ARRAY(flippedImage);
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}
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else
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{
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callback(image, width, height);
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}
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};
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auto flipImageCallback = std::bind(flipImageFunc, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
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Utils::getTextureBytes(x, y, width, height, _mtlTexture, flipImageCallback);
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}
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void TextureCubeMTL::generateMipmaps()
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{
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if (TextureUsage::RENDER_TARGET == _textureUsage || isColorRenderable(_textureFormat) == false)
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return;
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if(!_hasMipmaps)
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{
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_hasMipmaps = true;
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Utils::generateMipmaps(_mtlTexture);
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}
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}
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CC_BACKEND_END
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