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DOS: scale menu frame to fit screen

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This commit is contained in:
Brad Parker 2017-02-05 15:23:38 -05:00
parent 83619b25e6
commit 0bdcdac2da
1 changed files with 4 additions and 1 deletions
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5
gfx/drivers/vga_gfx.c
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@ -368,7 +368,10 @@ static void vga_set_texture_frame(void *data,
{ {
for(x = 0; x < VGA_WIDTH; x++) for(x = 0; x < VGA_WIDTH; x++)
{ {
unsigned short pixel = video_frame[width * y + x]; /* scale incoming frame to fit the screen */
unsigned scaled_x = (width / (float)VGA_WIDTH) * x;
unsigned scaled_y = (height / (float)VGA_HEIGHT) * y;
unsigned short pixel = video_frame[width * scaled_y + scaled_x];
unsigned r = (7.0f / 15.0f) * ((pixel & 0xF000) >> 12); unsigned r = (7.0f / 15.0f) * ((pixel & 0xF000) >> 12);
unsigned g = (7.0f / 15.0f) * ((pixel & 0xF00) >> 8); unsigned g = (7.0f / 15.0f) * ((pixel & 0xF00) >> 8);
unsigned b = (3.0f / 15.0f) * ((pixel & 0xF0) >> 4); unsigned b = (3.0f / 15.0f) * ((pixel & 0xF0) >> 4);