mirror of https://github.com/nmlgc/ReC98.git
[Maintenance] Introduce factor and bit count constants for subpixels
Providing that tiny bit of additional readability. Part of P0182, funded by Lmocinemod and [Anonymous].
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@ -7,18 +7,21 @@
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typedef int subpixel_t;
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typedef int subpixel_t;
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static const subpixel_t SUBPIXEL_FACTOR = 16;
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static const char SUBPIXEL_BITS = 4;
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#define TO_SP(v) \
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#define TO_SP(v) \
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(v << 4)
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(v << SUBPIXEL_BITS)
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#define TO_PIXEL(v) \
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#define TO_PIXEL(v) \
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(v >> 4)
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(v >> SUBPIXEL_BITS)
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// In-place conversion to a pixel. Ugly, and should not exist.
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// In-place conversion to a pixel. Ugly, and should not exist.
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#define TO_PIXEL_INPLACE(v) \
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#define TO_PIXEL_INPLACE(v) \
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(v >>= 4)
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(v >>= SUBPIXEL_BITS)
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inline subpixel_t to_sp(float pixel_v) {
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inline subpixel_t to_sp(float pixel_v) {
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return static_cast<subpixel_t>(pixel_v * 16.0f);
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return static_cast<subpixel_t>(pixel_v * SUBPIXEL_FACTOR);
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}
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}
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inline unsigned char to_sp8(float pixel_v) {
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inline unsigned char to_sp8(float pixel_v) {
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@ -1,2 +1,5 @@
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PIXEL_NONE = -999
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PIXEL_NONE = -999
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SUBPIXEL_NONE = (PIXEL_NONE shl 4)
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SUBPIXEL_NONE = (PIXEL_NONE shl 4)
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SUBPIXEL_FACTOR = 16
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SUBPIXEL_BITS = 4
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