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| author | Simon Robertshaw <simon@hardwired.org.uk> | 2011-07-24 13:26:32 (GMT) |
|---|---|---|
| committer | Simon Robertshaw <simon@hardwired.org.uk> | 2011-07-24 13:26:32 (GMT) |
| commit | fbb72e4f324334266e034c0118c14eb16bfbc373 (patch) | |
| tree | 9f148746ce0c49eec01a48cd59bcd37e844734b4 /src/graphics.c | |
| parent | 7808059453cec9f866a9481ab08d8dd91674d3c8 (diff) | |
| download | powder-fbb72e4f324334266e034c0118c14eb16bfbc373.zip powder-fbb72e4f324334266e034c0118c14eb16bfbc373.tar.gz | |
Slight speed improvements for lensing
Diffstat (limited to 'src/graphics.c')
| -rw-r--r-- | src/graphics.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/src/graphics.c b/src/graphics.c index f738354..1945c33 100644 --- a/src/graphics.c +++ b/src/graphics.c @@ -3749,18 +3749,34 @@ void render_signs(pixel *vid_buf) void render_gravlensing(pixel *src, pixel * dst) { int nx, ny, rx, ry, gx, gy, bx, by; + int r, g, b; + pixel t; for(nx = 0; nx < XRES; nx++) { for(ny = 0; ny < YRES; ny++) { - rx = nx-(gravxf[(ny*XRES)+nx]*0.5f); - ry = ny-(gravyf[(ny*XRES)+nx]*0.5f); - gx = nx-(gravxf[(ny*XRES)+nx]*0.75f); - gy = ny-(gravyf[(ny*XRES)+nx]*0.75f); + rx = nx-(gravxf[(ny*XRES)+nx]*0.75f); + ry = ny-(gravyf[(ny*XRES)+nx]*0.75f); + gx = nx-(gravxf[(ny*XRES)+nx]*0.875f); + gy = ny-(gravyf[(ny*XRES)+nx]*0.875f); bx = nx-(gravxf[(ny*XRES)+nx]); by = ny-(gravyf[(ny*XRES)+nx]); if(rx > 0 && rx < XRES && ry > 0 && ry < YRES && gx > 0 && gx < XRES && gy > 0 && gy < YRES && bx > 0 && bx < XRES && by > 0 && by < YRES) - addpixel(dst, nx, ny, PIXR(src[ry*(XRES+BARSIZE)+rx]), PIXG(src[gy*(XRES+BARSIZE)+gx]), PIXB(src[by*(XRES+BARSIZE)+bx]), 255); + { + t = dst[ny*(XRES+BARSIZE)+nx]; + r = PIXR(src[ry*(XRES+BARSIZE)+rx]) + PIXR(t); + g = PIXG(src[gy*(XRES+BARSIZE)+gx]) + PIXG(t); + b = PIXB(src[by*(XRES+BARSIZE)+bx]) + PIXB(t); + if (r>255) + r = 255; + if (g>255) + g = 255; + if (b>255) + b = 255; + dst[ny*(XRES+BARSIZE)+nx] = PIXRGB(r,g,b); + // addpixel(dst, nx, ny, PIXR(src[ry*(XRES+BARSIZE)+rx]), PIXG(src[gy*(XRES+BARSIZE)+gx]), PIXB(src[by*(XRES+BARSIZE)+bx]), 255); + } + /*rx = nx+(gravxf[(ny*XRES)+nx]*0.5f); ry = ny+(gravyf[(ny*XRES)+nx]*0.5f); gx = nx+(gravxf[(ny*XRES)+nx]*0.75f); |