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platform, fix vertical scaling, aspect ratio handling (gp2x, psp)

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This commit is contained in:
kub 2021-11-10 23:08:49 +01:00
parent ace184013b
commit 495fe1fdad
2 changed files with 17 additions and 2 deletions
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13
platform/gp2x/emu.c
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@ -256,8 +256,11 @@ static int ld_left, ld_lines; // numbers in Q1 format
static int EmuScanBegin16_ld(unsigned int num)
{
if ((signed int)(ld_counter - num) > 100)
ld_counter = 0;
if ((signed int)(ld_counter - num) > 100) {
// vsync, offset so that the upscaled image is centered
ld_counter = 120 - (120-num) * (ld_lines+2)/ld_lines;
ld_left = ld_lines;
}
if (emu_scan_begin)
return emu_scan_begin(ld_counter);
@ -586,6 +589,12 @@ void emu_video_mode_change(int start_line, int line_count, int start_col, int co
int scalex = 320, scaley = 240;
int ln_offs = 0;
/* NTSC always has 224 visible lines, anything smaller has bars */
if (line_count < 224 && line_count > 144) {
start_line -= (224-line_count) /2;
line_count = 224;
}
/* line doubling for swscaling, also needed for bg frames */
if (currentConfig.vscaling == EOPT_SCALE_SW && line_count < 240) {
ld_lines = ld_left = 2*line_count / (240 - line_count);