diff options
Diffstat (limited to 'third_party/rust/wpf-gpu-raster/src/fix.rs')
| -rw-r--r-- | third_party/rust/wpf-gpu-raster/src/fix.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/third_party/rust/wpf-gpu-raster/src/fix.rs b/third_party/rust/wpf-gpu-raster/src/fix.rs new file mode 100644 index 0000000000..bf4741e260 --- /dev/null +++ b/third_party/rust/wpf-gpu-raster/src/fix.rs @@ -0,0 +1,9 @@ +use crate::types::*; +type FIX4 = INT; // 28.4 fixed point value + +// constants for working with 28.4 fixed point values +macro_rules! FIX4_SHIFT { () => { 4 } } +macro_rules! FIX4_PRECISION { () => { 4 } } +macro_rules! FIX4_ONE { () => { (1 << FIX4_PRECISION!()) } } +macro_rules! FIX4_HALF { () => { (1 << (FIX4_PRECISION!()-1)) } } +macro_rules! FIX4_MASK { () => { (FIX4_ONE!() - 1) } }
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