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| use std::os; | |
| #[allow(unused_variables)] | |
| fn main() { | |
| let width = 2u8; | |
| let height = 3u8; | |
| let size = 4u8; | |
| let pitch = width * size; | |
| let (mut x_offset, mut y_offset) = (0u8, 0u8); | |
| let chunk = match os::MemoryMap::new((width * height * size) as uint, &[ | |
| os::MapOption::MapReadable, | |
| os::MapOption::MapWritable | |
| ]) { | |
| Ok(chunk) => chunk, | |
| Err(msg) => panic!("{}", msg) | |
| }; | |
| let row = &chunk; // uint8 *Row = (uint8 *)BitmapMemory; | |
| while y_offset <= 10 { | |
| for y in range(0u8, height) { | |
| let pixel = row; // uint32 *Pixel = (uint32 *)Row; | |
| for x in range(0u8, width) { | |
| let red: u8 = 0u8; | |
| let green: u8 = y + y_offset; | |
| let blue: u8 = x + x_offset; | |
| // *Pixel++ = ((Green << 8) | Blue); | |
| println!("Green: {} | Blue: {} | Red: {} = {}", green, blue, red, (red | (green << 4) | blue)); | |
| } | |
| // Row += Pitch; | |
| // println!("{:p}", row); | |
| } | |
| x_offset += 1; | |
| y_offset += 2; | |
| }; | |
| } |
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| internal void | |
| RenderWeirdGradient(int BlueOffset, int GreenOffset) | |
| { | |
| int Width = BitmapWidth; | |
| int Height = BitmapHeight; | |
| int Pitch = Width*BytesPerPixel; | |
| uint8 *Row = (uint8 *)BitmapMemory; | |
| for(int Y = 0; | |
| Y < BitmapHeight; | |
| ++Y) | |
| { | |
| uint32 *Pixel = (uint32 *)Row; | |
| for(int X = 0; | |
| X < BitmapWidth; | |
| ++X) | |
| { | |
| uint8 Blue = (X + BlueOffset); | |
| uint8 Green = (Y + GreenOffset); | |
| *Pixel++ = ((Green << 8) | Blue); | |
| } | |
| Row += Pitch; | |
| } | |
| } |
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