diff options
| -rw-r--r-- | src/i_scale.c | 2 | ||||
| -rw-r--r-- | src/i_video.h | 30 |
2 files changed, 29 insertions, 3 deletions
diff --git a/src/i_scale.c b/src/i_scale.c index 56a7fb5b..1f32a8d5 100644 --- a/src/i_scale.c +++ b/src/i_scale.c @@ -1195,7 +1195,7 @@ screen_mode_t mode_squash_2x = { SCREENWIDTH_4_3 * 2, SCREENHEIGHT * 2, I_InitStretchTables, I_Squash2x, - true, + false, }; diff --git a/src/i_video.h b/src/i_video.h index ff720922..4a85f93e 100644 --- a/src/i_video.h +++ b/src/i_video.h @@ -64,9 +64,35 @@ typedef struct boolean (*DrawScreen)(int x1, int y1, int x2, int y2); - // If true, this is a "poor quality" mode. The autoadjust - // code should always attempt to use a different mode to this + // If true, this is a "poor quality" mode. The autoadjust + // code should always attempt to use a different mode to this // mode in fullscreen. + // + // Some notes about what "poor quality" means in this context: + // + // The aspect ratio correction works by scaling up to the larger + // screen size and then drawing pixels on the edges between the + // "virtual" pixels so that an authentic blocky look-and-feel is + // achieved. + // + // For a mode like 640x480, you can imagine the grid of the + // "original" pixels spaced out, with extra "blurry" pixels added + // in the space between them to fill it out. However, when you're + // running at a resolution like 320x240, this is not the case. In + // the small screen case, every single pixel has to be a blurry + // interpolation of two pixels from the original image. + // + // If you run in 320x240 and put your face up close to the screen + // you can see this: it's particularly visible in the small yellow + // status bar numbers for example. Overall it still looks "okay" + // but there's an obvious - albeit small - deterioration in + // quality. + // + // Once you get to 640x480, all the original pixels are there at + // least once and it's okay (the higher the resolution, the more + // accurate it is). When I first wrote the code I was expecting + // that even higher resolutions would be needed before it would + // look acceptable, but it turned out to be okay even at 640x480. boolean poor_quality; } screen_mode_t; |