KisFilterPreviewWidget::KisFilterPreviewWidget(QWidget* parent): QWidget(parent)
{
KisConfig cfg;
// for preview make it smaller than on canvas
qint32 checkSize = qMax(1,cfg.checkSize() / 2);
QImage checkImage = KisCanvasWidgetBase::createCheckersImage(checkSize);
m_checkBrush = QBrush(checkImage);
m_pixmap = QPixmap::fromImage(checkImage);
}
void KisOpenGLCanvas2::initializeGL()
{
KisOpenGL::initializeContext(context());
initializeOpenGLFunctions();
KisConfig cfg;
d->openGLImageTextures->setProofingConfig(canvas()->proofingConfiguration());
d->openGLImageTextures->initGL(context()->functions());
d->openGLImageTextures->generateCheckerTexture(createCheckersImage(cfg.checkSize()));
initializeShaders();
// If we support OpenGL 3.2, then prepare our VAOs and VBOs for drawing
if (KisOpenGL::hasOpenGL3()) {
d->quadVAO.create();
d->quadVAO.bind();
glEnableVertexAttribArray(PROGRAM_VERTEX_ATTRIBUTE);
glEnableVertexAttribArray(PROGRAM_TEXCOORD_ATTRIBUTE);
// Create the vertex buffer object, it has 6 vertices with 3 components
d->quadBuffers[0].create();
d->quadBuffers[0].setUsagePattern(QOpenGLBuffer::StaticDraw);
d->quadBuffers[0].bind();
d->quadBuffers[0].allocate(d->vertices, 6 * 3 * sizeof(float));
glVertexAttribPointer(PROGRAM_VERTEX_ATTRIBUTE, 3, GL_FLOAT, GL_FALSE, 0, 0);
// Create the texture buffer object, it has 6 texture coordinates with 2 components
d->quadBuffers[1].create();
d->quadBuffers[1].setUsagePattern(QOpenGLBuffer::StaticDraw);
d->quadBuffers[1].bind();
d->quadBuffers[1].allocate(d->texCoords, 6 * 2 * sizeof(float));
glVertexAttribPointer(PROGRAM_TEXCOORD_ATTRIBUTE, 2, GL_FLOAT, GL_FALSE, 0, 0);
// Create the outline buffer, this buffer will store the outlines of
// tools and will frequently change data
d->outlineVAO.create();
d->outlineVAO.bind();
glEnableVertexAttribArray(PROGRAM_VERTEX_ATTRIBUTE);
// The outline buffer has a StreamDraw usage pattern, because it changes constantly
d->lineBuffer.create();
d->lineBuffer.setUsagePattern(QOpenGLBuffer::StreamDraw);
d->lineBuffer.bind();
glVertexAttribPointer(PROGRAM_VERTEX_ATTRIBUTE, 3, GL_FLOAT, GL_FALSE, 0, 0);
}
ptr_glLogicOp = (kis_glLogicOp)(context()->getProcAddress("glLogicOp"));
Sync::init(context());
d->canvasInitialized = true;
}
void KisOpenGLCanvas2::slotConfigChanged()
{
KisConfig cfg;
d->checkSizeScale = KisOpenGLImageTextures::BACKGROUND_TEXTURE_CHECK_SIZE / static_cast<GLfloat>(cfg.checkSize());
d->scrollCheckers = cfg.scrollCheckers();
d->openGLImageTextures->generateCheckerTexture(createCheckersImage(cfg.checkSize()));
d->openGLImageTextures->updateConfig(cfg.useOpenGLTextureBuffer(), cfg.numMipmapLevels());
d->filterMode = (KisOpenGL::FilterMode) cfg.openGLFilteringMode();
notifyConfigChanged();
}