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Window: blit x ranges as spans

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Blue 2021-01-26 21:12:05 +01:00
parent 4dd416d4c2
commit 188c3b8109
1 changed files with 7 additions and 5 deletions
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12
ProjectPSX.WinForms/UI/Window.cs
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@ -204,17 +204,19 @@ namespace ProjectPSX {
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void blit16bpp(int[] vramBits) {
private unsafe void blit16bpp(int[] vramBits) {
//Console.WriteLine($"x1 {displayX1} x2 {displayX2} y1 {displayY1} y2 {displayY2}");
//Console.WriteLine($"Display Height {display.Height} Width {display.Width}");
int yRangeOffset = (240 - (displayY2 - displayY1)) >> (verticalRes == 480 ? 0 : 1);
if (yRangeOffset < 0) yRangeOffset = 0;
var vram = new Span<int>(vramBits);
var display = new Span<int>(this.display.BitmapData.ToPointer(), 0x80000);
for (int y = yRangeOffset; y < verticalRes - yRangeOffset; y++) {
for (int x = 0; x < horizontalRes; x++) {
int pixel = vramBits[(x + displayVRAMXStart) + ((y - yRangeOffset + displayVRAMYStart) * 1024)];
display.DrawPixel(x, y, pixel);
}
var from = vram.Slice(displayVRAMXStart + ((y - yRangeOffset + displayVRAMYStart) * 1024), horizontalRes);
var to = display.Slice(y * 1024);
from.CopyTo(to);
}
}