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Simpler calculation of the vertex count for the Waves animation. Feels safer.

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Henrik Rydgård 2023-05-02 13:34:02 +02:00
parent 86d442bbdc
commit eee4640962
1 changed files with 7 additions and 5 deletions
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12
UI/MiscScreens.cpp
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@ -133,12 +133,14 @@ public:
dc.Flush();
dc.BeginNoTex();
// Be sure to not overflow our vertex buffer
const float step = ceilf(24*bounds.w/ g_display.pixel_in_dps_x) > MAX_VERTS ? 24*bounds.w/(MAX_VERTS-48) : g_display.pixel_in_dps_x;
// 500 is enough for any resolution really. 24 * 500 = 12000 which fits handily in our UI vertex buffer (max 65536 per flush).
const int steps = std::max(20, std::min((int)g_display.dp_xres, 500));
float step = (float)g_display.dp_xres / (float)steps;
t *= speed;
for (float x = 0; x < bounds.w; x += step) {
float i = x * 1280/bounds.w;
for (int n = 0; n < steps; n++) {
float x = (float)n * step;
float i = x * 1280 / bounds.w;
float wave0 = sin(i*0.005+t*0.8)*0.05 + sin(i*0.002+t*0.25)*0.02 + sin(i*0.001+t*0.3)*0.03 + 0.625;
float wave1 = sin(i*0.0044+t*0.4)*0.07 + sin(i*0.003+t*0.1)*0.02 + sin(i*0.001+t*0.3)*0.01 + 0.625;