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Expand BRTx to 0..132, fix affine parallax

This commit is contained in:
Guy Perfect 2025-02-25 09:02:22 -06:00
parent 185362e6cd
commit 459a16076a
1 changed files with 12 additions and 11 deletions
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23
core/vip.c
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@ -42,14 +42,15 @@ static const uint8_t BG_TEMPLATES[][64] = {
/* 8-bit color magnitude by brightness level */
static const uint8_t BRIGHT8[] = {
0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62,
64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94,
96, 98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,
129,131,133,135,137,139,141,143,145,147,149,151,153,155,157,159,
161,163,165,167,169,171,173,175,177,179,181,183,185,187,189,191,
193,195,197,199,201,203,205,207,209,211,213,215,217,219,221,223,
225,227,229,231,233,235,237,239,241,243,245,247,249,251,253,255
0, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 28,
30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 57, 59,
61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 86, 88, 90,
92, 94, 96, 98,100,102,104,106,108,110,112,113,115,117,119,121,
123,125,127,129,131,133,135,137,139,141,142,144,146,148,150,152,
154,156,158,160,162,164,166,168,170,171,173,175,177,179,181,183,
185,187,189,191,193,195,197,198,200,202,204,206,208,210,212,214,
216,218,220,222,224,226,227,229,231,233,235,237,239,241,243,245,
247,249,251,253,255
};
@ -586,7 +587,7 @@ static void vipComputeBrightness(VB *sim) {
/* Transform brightness values to 0..255 */
for (x = 1; x < 4; x++)
sim->vip.dp.brt[x] = brt[x] > 127 ? 255 : BRIGHT8[brt[x]];
sim->vip.dp.brt[x] = brt[x] > 132 ? 255 : BRIGHT8[brt[x]];
}
/* Transfer one column of frame buffer pixels to output */
@ -1060,8 +1061,8 @@ static void vipDrawAffine(VB *sim, World *world) {
/* Adjust left-edge parameters */
if ((mp < 0) ^ i) {
mx += dx * (wx - mp);
my += dy * (wx - mp);
mx += dx * (wx + mp);
my += dy * (wx + mp);
} else {
mx += dx * wx;
my += dy * wx;