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libkwineffects: Make OffscreenEffect render window with its output's scale

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Render the window at its output's scale to make the window less blurry.

BUG: 470607
This commit is contained in:
Vlad Zahorodnii 2023-06-12 16:53:16 +03:00
parent 984af8f4f2
commit b9da04bf45
1 changed files with 5 additions and 6 deletions
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11
src/libkwineffects/kwinoffscreeneffect.cpp
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@ -91,10 +91,9 @@ void OffscreenEffect::apply(EffectWindow *window, int mask, WindowPaintData &dat
void OffscreenData::maybeRender(EffectWindow *window)
{
QRectF logicalGeometry = window->expandedGeometry();
// FIXME no render target, as this isn't always called from rendering code
// The texture size should take the scale into account though...
QSize textureSize = logicalGeometry.toAlignedRect().size();
const QRectF logicalGeometry = window->expandedGeometry();
const qreal scale = window->screen()->devicePixelRatio();
const QSize textureSize = (logicalGeometry.size() * scale).toSize();
if (!m_texture || m_texture->size() != textureSize) {
m_texture = GLTexture::allocate(GL_RGBA8, textureSize);
@ -109,13 +108,13 @@ void OffscreenData::maybeRender(EffectWindow *window)
if (m_isDirty) {
RenderTarget renderTarget(m_fbo.get());
RenderViewport viewport(logicalGeometry, 1, renderTarget);
RenderViewport viewport(logicalGeometry, scale, renderTarget);
GLFramebuffer::pushFramebuffer(m_fbo.get());
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
QMatrix4x4 projectionMatrix;
projectionMatrix.ortho(QRectF(0, 0, logicalGeometry.width(), logicalGeometry.height()));
projectionMatrix.ortho(QRectF(0, 0, textureSize.width(), textureSize.height()));
WindowPaintData data;
data.setXTranslation(-logicalGeometry.x());