mirror of https://github.com/axmolengine/axmol.git
252 lines
9.5 KiB
Plaintext
252 lines
9.5 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 "Utils.h"
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#include "DeviceMTL.h"
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#include "base/CCConfiguration.h"
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#define COLOR_ATTAHCMENT_PIXEL_FORMAT MTLPixelFormatBGRA8Unorm
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CC_BACKEND_BEGIN
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id<MTLTexture> Utils::_defaultColorAttachmentTexture = nil;
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id<MTLTexture> Utils::_defaultDepthStencilAttachmentTexture = nil;
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namespace {
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#define byte(n) ((n) * 8)
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#define bit(n) (n)
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uint8_t getBitsPerElement(MTLPixelFormat pixleFormat)
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{
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switch (pixleFormat)
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{
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case MTLPixelFormatDepth32Float_Stencil8:
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return byte(8);
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case MTLPixelFormatBGRA8Unorm:
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case MTLPixelFormatRGBA8Unorm:
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case MTLPixelFormatDepth32Float:
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return byte(4);
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC)
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case MTLPixelFormatDepth24Unorm_Stencil8:
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return byte(4);
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#else
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case MTLPixelFormatABGR4Unorm:
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case MTLPixelFormatBGR5A1Unorm:
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case MTLPixelFormatB5G6R5Unorm:
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case MTLPixelFormatA1BGR5Unorm:
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return byte(2);
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#endif
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case MTLPixelFormatA8Unorm:
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case MTLPixelFormatR8Unorm:
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return byte(1);
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default:
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assert(false);
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break;
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}
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return 0;
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}
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MTLPixelFormat getSupportedDepthStencilFormat()
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{
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MTLPixelFormat pixelFormat = MTLPixelFormatDepth32Float_Stencil8;
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC)
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bool isDepth24Stencil8PixelFormatSupported = Configuration::getInstance()->supportsOESPackedDepthStencil();
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if(isDepth24Stencil8PixelFormatSupported)
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pixelFormat = MTLPixelFormatDepth24Unorm_Stencil8;
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#endif
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return pixelFormat;
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}
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}
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MTLPixelFormat Utils::getDefaultDepthStencilAttachmentPixelFormat()
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{
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return getSupportedDepthStencilFormat();
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}
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MTLPixelFormat Utils::getDefaultColorAttachmentPixelFormat()
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{
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return COLOR_ATTAHCMENT_PIXEL_FORMAT;
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}
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id<MTLTexture> Utils::getDefaultDepthStencilTexture()
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{
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if (! _defaultDepthStencilAttachmentTexture)
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_defaultDepthStencilAttachmentTexture = Utils::createDepthStencilAttachmentTexture();
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return _defaultDepthStencilAttachmentTexture;
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}
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void Utils::updateDefaultColorAttachmentTexture(id<MTLTexture> texture)
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{
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Utils::_defaultColorAttachmentTexture = texture;
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}
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MTLPixelFormat Utils::toMTLPixelFormat(PixelFormat textureFormat)
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{
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switch (textureFormat)
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{
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
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case PixelFormat::MTL_ABGR4:
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return MTLPixelFormatABGR4Unorm;
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case PixelFormat::MTL_BGR5A1:
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return MTLPixelFormatBGR5A1Unorm;
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case PixelFormat::MTL_B5G6R5:
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return MTLPixelFormatB5G6R5Unorm;
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case PixelFormat::PVRTC4A:
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return MTLPixelFormatPVRTC_RGBA_4BPP;
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case PixelFormat::PVRTC4:
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return MTLPixelFormatPVRTC_RGB_4BPP;
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case PixelFormat::PVRTC2A:
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return MTLPixelFormatPVRTC_RGBA_2BPP;
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case PixelFormat::PVRTC2:
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return MTLPixelFormatPVRTC_RGB_2BPP;
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case PixelFormat::ETC:
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return MTLPixelFormatETC2_RGB8;
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#else
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case PixelFormat::S3TC_DXT1:
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return MTLPixelFormatBC1_RGBA;
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case PixelFormat::S3TC_DXT3:
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return MTLPixelFormatBC2_RGBA;
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case PixelFormat::S3TC_DXT5:
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return MTLPixelFormatBC3_RGBA;
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#endif
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case PixelFormat::RGBA8888:
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return MTLPixelFormatRGBA8Unorm;
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// Should transfer the data to match pixel format when updating data.
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case PixelFormat::RGB888:
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return MTLPixelFormatRGBA8Unorm;
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case PixelFormat::A8:
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return MTLPixelFormatA8Unorm;
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case PixelFormat::BGRA8888:
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return MTLPixelFormatBGRA8Unorm;
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//on mac, D24S8 means MTLPixelFormatDepth24Unorm_Stencil8, while on ios it means MTLPixelFormatDepth32Float_Stencil8
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case PixelFormat::D24S8:
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return getSupportedDepthStencilFormat();
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case PixelFormat::DEFAULT:
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return COLOR_ATTAHCMENT_PIXEL_FORMAT;
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case PixelFormat::NONE:
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default:
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return MTLPixelFormatInvalid;
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}
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}
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void Utils::resizeDefaultAttachmentTexture(std::size_t width, std::size_t height)
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{
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[backend::DeviceMTL::getCAMetalLayer() setDrawableSize:CGSizeMake(width, height)];
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[_defaultDepthStencilAttachmentTexture release];
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_defaultDepthStencilAttachmentTexture = Utils::createDepthStencilAttachmentTexture();
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}
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id<MTLTexture> Utils::createDepthStencilAttachmentTexture()
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{
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auto CAMetalLayer = DeviceMTL::getCAMetalLayer();
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MTLTextureDescriptor* textureDescriptor = [[MTLTextureDescriptor alloc] init];
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textureDescriptor.width = CAMetalLayer.drawableSize.width;
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textureDescriptor.height = CAMetalLayer.drawableSize.height;
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textureDescriptor.pixelFormat = getSupportedDepthStencilFormat();
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textureDescriptor.resourceOptions = MTLResourceStorageModePrivate;
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textureDescriptor.usage = MTLTextureUsageRenderTarget;
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auto ret = [CAMetalLayer.device newTextureWithDescriptor:textureDescriptor];
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[textureDescriptor release];
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return ret;
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}
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void Utils::generateMipmaps(id<MTLTexture> texture)
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{
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auto commandQueue = static_cast<DeviceMTL*>(DeviceMTL::getInstance())->getMTLCommandQueue();
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auto commandBuffer = [commandQueue commandBuffer];
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id<MTLBlitCommandEncoder> commandEncoder = [commandBuffer blitCommandEncoder];
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[commandEncoder generateMipmapsForTexture:texture];
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[commandEncoder endEncoding];
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[commandBuffer commit];
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}
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void Utils::swizzleImage(unsigned char *image, std::size_t width, std::size_t height, MTLPixelFormat format)
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{
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if(!image)
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return;
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auto len = width * height;
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switch (format) {
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//convert to RGBA
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case MTLPixelFormatBGRA8Unorm:
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for(int i=0; i<len; i++)
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{
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unsigned char temp = image[i*4];
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image[i*4] = image[i*4+2];
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image[i*4+2] = temp;
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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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}
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void Utils::getTextureBytes(std::size_t origX, std::size_t origY, std::size_t rectWidth, std::size_t rectHeight, id<MTLTexture> texture, std::function<void(const unsigned char*, std::size_t, std::size_t)> callback)
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{
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NSUInteger texWidth = texture.width;
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NSUInteger texHeight = texture.height;
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MTLRegion region = MTLRegionMake2D(0, 0, texWidth, texHeight);
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MTLRegion imageRegion = MTLRegionMake2D(origX, origY, rectWidth, rectHeight);
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MTLTextureDescriptor* textureDescriptor =
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[MTLTextureDescriptor texture2DDescriptorWithPixelFormat:[texture pixelFormat]
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width:texWidth
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height:texHeight
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mipmapped:NO];
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id<MTLDevice> device = static_cast<DeviceMTL*>(DeviceMTL::getInstance())->getMTLDevice();
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id<MTLTexture> copiedTexture = [device newTextureWithDescriptor:textureDescriptor];
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id<MTLCommandQueue> commandQueue = static_cast<DeviceMTL*>(DeviceMTL::getInstance())->getMTLCommandQueue();
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auto commandBuffer = [commandQueue commandBuffer];
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[commandBuffer enqueue];
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id<MTLBlitCommandEncoder> blitCommandEncoder = [commandBuffer blitCommandEncoder];
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[blitCommandEncoder copyFromTexture:texture sourceSlice:0 sourceLevel:0 sourceOrigin:region.origin sourceSize:region.size toTexture:copiedTexture destinationSlice:0 destinationLevel:0 destinationOrigin:region.origin];
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC)
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[blitCommandEncoder synchronizeResource:copiedTexture];
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#endif
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[blitCommandEncoder endEncoding];
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[commandBuffer addCompletedHandler:^(id<MTLCommandBuffer> commandBufferMTL) {
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auto bytePerRow = rectWidth * getBitsPerElement(texture.pixelFormat) / 8;
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unsigned char* image = new (std::nothrow) unsigned char[bytePerRow * rectHeight];
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if(image != nullptr)
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{
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[copiedTexture getBytes:image bytesPerRow:bytePerRow fromRegion:imageRegion mipmapLevel:0];
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swizzleImage(image, rectWidth, rectHeight, texture.pixelFormat);
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}
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callback(image, rectWidth, rectHeight);
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CC_SAFE_DELETE_ARRAY(image);
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[copiedTexture release];
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}];
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[commandBuffer commit];
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}
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CC_BACKEND_END
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