void QGLView::drawTexts()
{
QList<Parameters*>* parametersList = getDrawableList(Text);
if (parametersList->isEmpty())
{
return;
}
m_textVertexBuffer->bind();
m_textProgram->enableAttributeArray(m_textPositionLocation);
m_textProgram->enableAttributeArray(m_textTexCoordinateLocation);
m_textProgram->setAttributeBuffer(m_textPositionLocation, GL_FLOAT, 0, 3, sizeof(TextVertex));
m_textProgram->setAttributeBuffer(m_textTexCoordinateLocation, GL_FLOAT, 3*sizeof(GLfloat), 2, sizeof(TextVertex));
for (int i = 0; i < parametersList->size(); ++i)
{
TextParameters *textParameters = static_cast<TextParameters*>(parametersList->at(i));
QStaticText staticText = textParameters->staticText;
int textureIndex;
QOpenGLTexture *texture;
float aspectRatio;
textureIndex = m_textTextList.indexOf(staticText);
texture = m_textTextureList.at(textureIndex);
aspectRatio = m_textAspectRatioList.at(textureIndex);
if (!texture->isCreated()) // initialize texture on first use
{
createTextTexture(textParameters);
}
m_textProgram->setUniformValue(m_textAspectRatioLocation, aspectRatio);
m_textProgram->setUniformValue(m_textAlignmentLocation, (GLint)textParameters->alignment);
m_textProgram->setUniformValue(m_textColorLocation, textParameters->color);
m_textProgram->setUniformValue(m_textModelMatrixLocation, textParameters->modelMatrix);
m_textProgram->setUniformValue(m_textTextureLocation, texture->textureId());
if (m_selectionModeActive) // selection mode active
{
m_textProgram->setUniformValue(m_textIdColorLocation, QColor(0xFF000000u + m_currentDrawableId)); // color for selection mode
m_drawableIdMap.insert(m_currentDrawableId, textParameters);
m_currentDrawableId++;
}
texture->bind(texture->textureId());
glDrawArrays(GL_TRIANGLES, 0, m_textVertexBuffer->size()/sizeof(TextVertex));
texture->release(texture->textureId());
}
m_textProgram->disableAttributeArray(m_textPositionLocation);
m_textProgram->disableAttributeArray(m_textTexCoordinateLocation);
m_textVertexBuffer->release();
}
