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backends/{x11,wayland}: Avoid painting null cursor image

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GLTexture(QImage()) may construct an invalid texture, which is going to
make GLTexture::bind() and other requests fail.
This commit is contained in:
Vlad Zahorodnii 2022-12-13 14:52:14 +02:00
parent 89613d8673
commit 77570c0667
2 changed files with 38 additions and 30 deletions
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34
src/backends/wayland/wayland_output.cpp
View file

@ -218,16 +218,18 @@ void WaylandOutput::renderCursorOpengl(WaylandEglBackend *backend, const QImage
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
if (!image.isNull()) {
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
GLTexture texture(image);
texture.bind();
ShaderBinder binder(ShaderTrait::MapTexture);
binder.shader()->setUniform(GLShader::ModelViewProjectionMatrix, mvp);
texture.render(cursorRect, beginInfo->renderTarget.devicePixelRatio());
texture.unbind();
glDisable(GL_BLEND);
GLTexture texture(image);
texture.bind();
ShaderBinder binder(ShaderTrait::MapTexture);
binder.shader()->setUniform(GLShader::ModelViewProjectionMatrix, mvp);
texture.render(cursorRect, beginInfo->renderTarget.devicePixelRatio());
texture.unbind();
glDisable(GL_BLEND);
}
cursorLayer->endFrame(infiniteRegion(), infiniteRegion());
}
@ -250,12 +252,14 @@ void WaylandOutput::renderCursorQPainter(WaylandQPainterBackend *backend, const
c->setDevicePixelRatio(scale());
c->fill(Qt::transparent);
QPainter p;
p.begin(c);
p.setWorldTransform(logicalToNativeMatrix(cursorRect, 1, transform()).toTransform());
p.setRenderHint(QPainter::SmoothPixmapTransform);
p.drawImage(QPoint(0, 0), image);
p.end();
if (!image.isNull()) {
QPainter p;
p.begin(c);
p.setWorldTransform(logicalToNativeMatrix(cursorRect, 1, transform()).toTransform());
p.setRenderHint(QPainter::SmoothPixmapTransform);
p.drawImage(QPoint(0, 0), image);
p.end();
}
cursorLayer->endFrame(infiniteRegion(), infiniteRegion());
}

34
src/backends/x11/windowed/x11_windowed_output.cpp
View file

@ -318,16 +318,18 @@ void X11WindowedOutput::renderCursorOpengl(X11WindowedEglBackend *backend, const
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
if (!image.isNull()) {
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
GLTexture texture(image);
texture.bind();
ShaderBinder binder(ShaderTrait::MapTexture);
binder.shader()->setUniform(GLShader::ModelViewProjectionMatrix, mvp);
texture.render(cursorRect, beginInfo->renderTarget.devicePixelRatio());
texture.unbind();
glDisable(GL_BLEND);
GLTexture texture(image);
texture.bind();
ShaderBinder binder(ShaderTrait::MapTexture);
binder.shader()->setUniform(GLShader::ModelViewProjectionMatrix, mvp);
texture.render(cursorRect, beginInfo->renderTarget.devicePixelRatio());
texture.unbind();
glDisable(GL_BLEND);
}
cursorLayer->endFrame(infiniteRegion(), infiniteRegion());
}
@ -349,12 +351,14 @@ void X11WindowedOutput::renderCursorQPainter(X11WindowedQPainterBackend *backend
c->setDevicePixelRatio(scale());
c->fill(Qt::transparent);
QPainter p;
p.begin(c);
p.setWorldTransform(logicalToNativeMatrix(cursorRect, 1, transform()).toTransform());
p.setRenderHint(QPainter::SmoothPixmapTransform);
p.drawImage(QPoint(0, 0), image);
p.end();
if (!image.isNull()) {
QPainter p;
p.begin(c);
p.setWorldTransform(logicalToNativeMatrix(cursorRect, 1, transform()).toTransform());
p.setRenderHint(QPainter::SmoothPixmapTransform);
p.drawImage(QPoint(0, 0), image);
p.end();
}
cursorLayer->endFrame(infiniteRegion(), infiniteRegion());
}