void QSG8BitTextMaskShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
{
QSGTextMaskShader::updateState(state, newEffect, oldEffect);
QSGTextMaskMaterial *material = static_cast<QSGTextMaskMaterial *>(newEffect);
QSGTextMaskMaterial *oldMaterial = static_cast<QSGTextMaskMaterial *>(oldEffect);
if (oldMaterial == 0 || material->color() != oldMaterial->color() || state.isOpacityDirty()) {
QVector4D color = qsg_premultiply(material->color(), state.opacity());
program()->setUniformValue(m_color_id, color);
}
}
void QSG24BitTextMaskShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
{
QSGTextMaskShader::updateState(state, newEffect, oldEffect);
QSGTextMaskMaterial *material = static_cast<QSGTextMaskMaterial *>(newEffect);
QSGTextMaskMaterial *oldMaterial = static_cast<QSGTextMaskMaterial *>(oldEffect);
if (oldMaterial == 0 || material->color() != oldMaterial->color() || state.isOpacityDirty()) {
QVector4D color = material->color();
if (m_useSRGB)
color = qt_sRGB_to_linear_RGB(color);
state.context()->functions()->glBlendColor(color.x(), color.y(), color.z(), color.w());
color = qsg_premultiply(color, state.opacity());
program()->setUniformValue(m_color_id, color.w());
}
}
void QSGTextMaskShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
{
QSGTextMaskMaterial *material = static_cast<QSGTextMaskMaterial *>(newEffect);
QSGTextMaskMaterial *oldMaterial = static_cast<QSGTextMaskMaterial *>(oldEffect);
Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
bool updated = material->ensureUpToDate();
Q_ASSERT(material->texture());
Q_ASSERT(oldMaterial == 0 || oldMaterial->texture());
if (updated
|| oldMaterial == 0
|| oldMaterial->texture()->textureId() != material->texture()->textureId()) {
program()->setUniformValue(m_textureScale_id, QVector2D(1.0 / material->cacheTextureWidth(),
1.0 / material->cacheTextureHeight()));
glBindTexture(GL_TEXTURE_2D, material->texture()->textureId());
// Set the mag/min filters to be nearest. We only need to do this when the texture
// has been recreated.
if (updated) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
}
if (state.isMatrixDirty()) {
QMatrix4x4 transform = state.modelViewMatrix();
qreal xTranslation = transform(0, 3);
qreal yTranslation = transform(1, 3);
// Remove translation and check identity to see if matrix is only translating.
// If it is, we can round the translation to make sure the text is pixel aligned,
// which is the only thing that works with GL_NEAREST filtering. Adding rotations
// and scales to native rendered text is not a prioritized use case, since the
// default rendering type is designed for that.
transform(0, 3) = 0.0;
transform(1, 3) = 0.0;
if (transform.isIdentity()) {
transform(0, 3) = qRound(xTranslation);
transform(1, 3) = qRound(yTranslation);
transform = state.projectionMatrix() * transform;
program()->setUniformValue(m_matrix_id, transform);
} else {
program()->setUniformValue(m_matrix_id, state.combinedMatrix());
}
}
}