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#import "impl/display-spritekit.hh"
#import "nes/common/utils.hh"
namespace nes::app::mac
{
namespace
{
auto make_buffer() -> NSMutableData*
{
auto const length = NSUInteger{ display::width * display::height * 4 };
return [NSMutableData dataWithLength:length];
}
} // namespace
display_spritekit::display_spritekit(SKSpriteNode* node)
: node_{ node }
, buffer_front_{ make_buffer() }
, buffer_back_{ make_buffer() }
, bytes_back_{ static_cast<u8*>([buffer_back_ mutableBytes]) }
, bytes_front_{ static_cast<u8*>([buffer_front_ mutableBytes]) }
{
}
auto display_spritekit::switch_buffers() -> void
{
swap(buffer_back_, buffer_front_);
swap(bytes_back_, bytes_front_);
auto texture = [SKTexture textureWithData:buffer_front_ size:CGSizeMake(width, height) flipped:YES];
[texture setFilteringMode:SKTextureFilteringNearest];
[node_ setTexture:texture];
}
auto display_spritekit::set(u32 const x, u32 const y, rgb const value) -> void
{
auto const offset = (y * width + x) * 4;
bytes_back_[offset + 0] = value.r;
bytes_back_[offset + 1] = value.g;
bytes_back_[offset + 2] = value.b;
bytes_back_[offset + 3] = 255;
}
} // namespace nes::app::mac
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