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touchpoints: Account for render target scale when creating geometry

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This commit is contained in:
Arjen Hiemstra 2022-08-05 11:53:05 +02:00
parent 0133de12c3
commit 154dd33857
1 changed files with 2 additions and 1 deletions
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3
src/effects/touchpoints/touchpoints.cpp
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@ -206,6 +206,7 @@ void TouchPointsEffect::drawCircleGl(const QColor &color, float cx, float cy, fl
static const float theta = 2 * 3.1415926 / float(num_segments);
static const float c = cosf(theta); // precalculate the sine and cosine
static const float s = sinf(theta);
const auto scale = effects->renderTargetScale();
float t;
float x = r; // we start at angle = 0
@ -219,7 +220,7 @@ void TouchPointsEffect::drawCircleGl(const QColor &color, float cx, float cy, fl
verts.reserve(num_segments * 2);
for (int ii = 0; ii < num_segments; ++ii) {
verts << x + cx << y + cy; // output vertex
verts << (x + cx) * scale << (y + cy) * scale; // output vertex
// apply the rotation matrix
t = x;
x = c * x - s * y;