mirror of
https://github.com/OpenEmu/OpenEmuKit.git
synced 2025-11-01 11:08:14 +00:00
Stuart Carnie
86 lines
3.5 KiB
Objective-C
86 lines
3.5 KiB
Objective-C
// Copyright (c) 2019, OpenEmu Team
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the OpenEmu Team nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY OpenEmu Team ''AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL OpenEmu Team BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#import "OEGameHelperMetalLayer.h"
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@implementation OEGameHelperMetalLayer
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- (instancetype)init
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{
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self = [super init];
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self.anchorPoint = CGPointMake(0,0);
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self.contentsGravity = kCAGravityResizeAspect;
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// TODO(sgc): this should come from the host
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self.contentsScale = 2.0;
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self.pixelFormat = self.pixelFormat;
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return self;
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}
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// TODO: Set this to match the final pixel format of OEFilterChain whenever the shader changes.
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- (void)setPixelFormat:(MTLPixelFormat)pixelFormat
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{
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[super setPixelFormat:pixelFormat];
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switch (pixelFormat) {
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case MTLPixelFormatBGRA8Unorm_sRGB:
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case MTLPixelFormatBGRA8Unorm:
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// Note: all 8bit images are sRGB. It's mathematically incorrect to use a non-sRGB pixel format
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// but most filters do it anyway and the different bugs cancel each other out.
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// TODO: Use the sRGB pixel format when not using shaders.
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// TODO: Since our images are mostly the "old TV" colorspace (NTSC 1953), try
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// using that (with a per-core setting). The color hue will be a little different.
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// Currently we use ITUR_709 (HDTV) which is close to sRGB but adapted to a dark room.
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self.colorspace = CGColorSpaceCreateWithName(kCGColorSpaceITUR_709);
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self.wantsExtendedDynamicRangeContent = NO;
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break;
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case MTLPixelFormatRGBA16Float:
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// For a filter that wants to output HDR, or at least linear gamma.
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// This "should" use the colorspace above but linear. This is close enough.
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self.colorspace = CGColorSpaceCreateWithName(kCGColorSpaceExtendedLinearSRGB);
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self.wantsExtendedDynamicRangeContent = YES;
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break;
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default:
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;
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}
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}
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#pragma mark - Properties
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- (void)setBounds:(CGRect)bounds
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{
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super.bounds = bounds;
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CGSize size = CGSizeApplyAffineTransform(bounds.size, CGAffineTransformMakeScale(self.contentsScale, self.contentsScale));
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self.drawableSize = size;
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}
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@end
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