Merge pull request #18210 from unknownbrackets/ui-waves

UI: Round wave coords to prevent gaps
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Henrik Rydgård 2023-09-23 23:34:35 +02:00 committed by GitHub
commit c4ad32420a
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@ -136,21 +136,28 @@ public:
// 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;
float stepSize = (float)g_display.dp_xres / (float)steps;
t *= speed;
float stepx = x;
for (int n = 0; n < steps; n++) {
float x = (float)n * step;
float i = x * 1280 / bounds.w;
float nextx = stepx + stepSize;
// Round actual x and width to prevent gaps between waves.
float roundedx = floorf(stepx);
float w = floorf(nextx) - roundedx;
float i = stepx * 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;
dc.Draw()->RectVGradient(x, wave0*bounds.h, step, (1.0-wave0)*bounds.h, color, 0x00000000);
dc.Draw()->RectVGradient(x, wave1*bounds.h, step, (1.0-wave1)*bounds.h, color, 0x00000000);
dc.Draw()->RectVGradient(roundedx, wave0*bounds.h, w, (1.0-wave0)*bounds.h, color, 0x00000000);
dc.Draw()->RectVGradient(roundedx, wave1*bounds.h, w, (1.0-wave1)*bounds.h, color, 0x00000000);
// Add some "antialiasing"
dc.Draw()->RectVGradient(x, wave0*bounds.h-3.0f * g_display.pixel_in_dps_y, step, 3.0f * g_display.pixel_in_dps_y, 0x00000000, color);
dc.Draw()->RectVGradient(x, wave1*bounds.h-3.0f * g_display.pixel_in_dps_y, step, 3.0f * g_display.pixel_in_dps_y, 0x00000000, color);
dc.Draw()->RectVGradient(roundedx, wave0*bounds.h-3.0f * g_display.pixel_in_dps_y, w, 3.0f * g_display.pixel_in_dps_y, 0x00000000, color);
dc.Draw()->RectVGradient(roundedx, wave1*bounds.h-3.0f * g_display.pixel_in_dps_y, w, 3.0f * g_display.pixel_in_dps_y, 0x00000000, color);
stepx = nextx;
}
dc.Flush();