mirror of https://github.com/axmolengine/axmol.git
202 lines
8.2 KiB
Plaintext
202 lines
8.2 KiB
Plaintext
/****************************************************************************
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Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
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Copyright (c) 2020 c4games.com
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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 "UtilsMTL.h"
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#include "DeviceMTL.h"
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#include "DeviceInfoMTL.h"
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#include "TextureMTL.h"
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#include "../TextureUtils.h"
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#include "base/CCConfiguration.h"
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CC_BACKEND_BEGIN
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id<MTLTexture> UtilsMTL::_defaultColorAttachmentTexture = nil;
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id<MTLTexture> UtilsMTL::_defaultDepthStencilAttachmentTexture = nil;
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namespace
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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 = DeviceInfoMTL::supportD24S8();
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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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struct GPUTextureFormatInfo
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{
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MTLPixelFormat fmt;
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MTLPixelFormat fmtSrgb;
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};
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static GPUTextureFormatInfo s_textureFormats[] = {
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/* pvrtc v1 */
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{MTLPixelFormat(162 /*PVRTC_RGB_4BPP*/), MTLPixelFormat(163 /*PVRTC_RGB_4BPP_sRGB*/)}, // PTC14
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{MTLPixelFormat(166 /*PVRTC_RGBA_4BPP*/), MTLPixelFormat(167 /*PVRTC_RGBA_4BPP_sRGB*/)}, // PTC14A
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{MTLPixelFormat(160 /*PVRTC_RGB_2BPP*/), MTLPixelFormat(161 /*PVRTC_RGB_2BPP_sRGB*/)}, // PTC12
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{MTLPixelFormat(164 /*PVRTC_RGBA_2BPP*/), MTLPixelFormat(165 /*PVRTC_RGBA_2BPP_sRGB*/)}, // PTC12A
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/* etc */
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{MTLPixelFormat(180 /*ETC2_RGB8*/), MTLPixelFormat(181 /*ETC2_RGB8_sRGB*/)}, // ETC1
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{MTLPixelFormat(180 /*ETC2_RGB8*/), MTLPixelFormat(181 /*ETC2_RGB8_sRGB*/)}, // ETC2
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{MTLPixelFormat(178 /*EAC_RGBA8*/), MTLPixelFormat(179 /*EAC_RGBA8_sRGB*/)}, // ETC2A
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/* s3tc */
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{MTLPixelFormat(130 /*BC1_RGBA*/), MTLPixelFormat(131 /*BC1_RGBA_sRGB*/)}, // S3TC_DXT1/BC1
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{MTLPixelFormat(132 /*BC2_RGBA*/), MTLPixelFormat(133 /*BC2_RGBA_sRGB*/)}, // S3TC_DXT3/BC2
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{MTLPixelFormat(134 /*BC3_RGBA*/), MTLPixelFormat(135 /*BC3_RGBA_sRGB*/)}, // S3TC_DXT5/BC3
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/* atc */
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ATC_RGB
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ATC_EXPLICIT_ALPHA
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ATC_INTERPOLATED_ALPHA
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/* astc */
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
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{MTLPixelFormatASTC_4x4_LDR, MTLPixelFormatASTC_4x4_sRGB}, // ASTC4x4
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{MTLPixelFormatASTC_5x5_LDR, MTLPixelFormatASTC_5x5_sRGB}, // ASTC5x5
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{MTLPixelFormatASTC_6x6_LDR, MTLPixelFormatASTC_6x6_sRGB}, // ASTC6x6
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{MTLPixelFormatASTC_8x5_LDR, MTLPixelFormatASTC_8x5_sRGB}, // ASTC8x5
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{MTLPixelFormatASTC_8x6_LDR, MTLPixelFormatASTC_8x6_sRGB}, // ASTC8x6
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{MTLPixelFormatASTC_8x8_LDR, MTLPixelFormatASTC_8x8_sRGB}, // ASTC8x8
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{MTLPixelFormatASTC_10x5_LDR, MTLPixelFormatASTC_10x5_sRGB}, // ASTC10x5
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#else
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ASTC4x4
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ASTC5x5
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ASTC6x6
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ASTC8x5
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ASTC8x6
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ASTC8x8
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // ASTC10x5
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#endif
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/* normal */
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{MTLPixelFormatRGBA8Unorm, MTLPixelFormatRGBA8Unorm_sRGB}, // RGBA8
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{MTLPixelFormatBGRA8Unorm, MTLPixelFormatBGRA8Unorm_sRGB}, // BGRA8
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // RGB8
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{MTLPixelFormat(40 /*B5G6R5Unorm*/), MTLPixelFormatInvalid}, // R5G6B5
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{MTLPixelFormat(42 /*ABGR4Unorm*/), MTLPixelFormatInvalid}, // RGBA4
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{MTLPixelFormat(41 /*A1BGR5Unorm*/), MTLPixelFormatInvalid}, // RGB5A1
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{MTLPixelFormatA8Unorm, MTLPixelFormatInvalid}, // A8
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // L8
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{MTLPixelFormatInvalid, MTLPixelFormatInvalid}, // LA8
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/* depth stencil */
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{MTLPixelFormat(255 /*Depth24Unorm_Stencil8*/), MTLPixelFormatInvalid}, // D24S8
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};
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static_assert(CC_ARRAYSIZE(s_textureFormats) == (int)PixelFormat::COUNT,
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"The OpenGL GPU texture format info table incomplete!");
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void UtilsMTL::initGPUTextureFormats()
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{
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// on mac, D24S8 means MTLPixelFormatDepth24Unorm_Stencil8, while on ios it means
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// MTLPixelFormatDepth32Float_Stencil8
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auto& info = s_textureFormats[(int)PixelFormat::D24S8];
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info.fmt = getSupportedDepthStencilFormat();
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}
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id<MTLTexture> UtilsMTL::getDefaultDepthStencilTexture()
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{
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if (!_defaultDepthStencilAttachmentTexture)
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_defaultDepthStencilAttachmentTexture = UtilsMTL::createDepthStencilAttachmentTexture();
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return _defaultDepthStencilAttachmentTexture;
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}
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void UtilsMTL::updateDefaultColorAttachmentTexture(id<MTLTexture> texture)
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{
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UtilsMTL::_defaultColorAttachmentTexture = texture;
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}
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MTLPixelFormat UtilsMTL::toMTLPixelFormat(PixelFormat textureFormat)
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{
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if (UTILS_LIKELY(textureFormat < PixelFormat::COUNT))
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{
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return s_textureFormats[(int)textureFormat].fmt;
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}
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return MTLPixelFormatInvalid;
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}
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void UtilsMTL::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 = UtilsMTL::createDepthStencilAttachmentTexture();
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}
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id<MTLTexture> UtilsMTL::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 = s_textureFormats[(int)PixelFormat::D24S8].fmt;
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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 UtilsMTL::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 UtilsMTL::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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{
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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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CC_BACKEND_END
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