void GradientField::setup(float w, float h)
{
setSize(w, h);
initParams();
allocateFbo();
createHexagonModel();
setHexagonModelColors();
createTriangleModel();
setTriangleModelColors();
renderShader.load("shaders/gradientfield_render");
plane.mapTexCoords(0, 0, 1, 1);
plane.setWidth(getWidth());
plane.setHeight(getHeight());
bModelColorsDirty = true;
bFboDirty = true;
bIgnoreParamChange = false;
}
/**
* Sets up and binds the FBO.
* 1: Set element according to fields.
* 2: Let children manipulate setup.
* 3: Allocate/deallocate if need be.
* 4: Set element according to finished Fbo
*/
void SoXipFbo::GLRender(SoGLRenderAction* action)
{
//SoDebugError::postInfo(__FUNCTION__, "(1) in mod out (%d %d %d)", mFboIn.isDirty, mFboMod.isDirty, mFboOut.isDirty);
if (autoSize.getValue()) {
const SbVec2s &viewportSize = action->getViewportRegion().getViewportSizePixels();
if (viewportSize != SbVec2s(width.getValue(), height.getValue())) {
SoDebugError::postInfo("SoXipFbo", "Autosetting FBO size to (%d, %d)", viewportSize[0], viewportSize[1]);
width.setValue(viewportSize[0]);
height.setValue(viewportSize[1]);
mNeedsUpdate = true;
}
}
// Can't use sensors if fields are changed while traversing tree, such as by parent size changing
if (width.getValue() != mFboIn.width || height.getValue() != mFboIn.height)
mNeedsUpdate = true;
if (mNeedsUpdate)
{
// Check number of buffers
checkMaxNumBuffers();
// Dealloc if allocated
if (mIsAllocated)
deallocate();
mFboIn.clear();
mFboMod.clear();
mFboOut.clear();
int currUnit = SoXipMultiTextureElement::getCurrentUnit(action->getState());
int freeUnit = SoXipMultiTextureElement::getFreeUnit(action->getState());
SoXipMultiTextureElement::setUnit(action->getState(), freeUnit);
allocateFbo();
SoXipMultiTextureElement::setUnit(action->getState(), currUnit);
//SoDebugError::postInfo(__FUNCTION__, "Allocated new Fbo (dirty)");
mNeedsUpdate = false;
}
else
mFboIn.isDirty = false;
mFboMod.isDirty = false;
//SoDebugError::postInfo(__FUNCTION__, "(2) in mod out (%d %d %d)", mFboIn.isDirty, mFboMod.isDirty, mFboOut.isDirty);
// Send to element and render children to allow modification
mFboIn.isOpen = true;
SoXipFboElement::set(action->getState(), this, mFboIn);
SoXipFboElement::bind(action->getState(), this);
int currentFbo;
glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, ¤tFbo);
if (!glIsFramebufferEXT(mFboIn.fboHandle) || mFboIn.fboHandle != currentFbo)
{
SoDebugError::postWarning("SoXipFbo", "Error in the setup, fbo not guaranteed to be bound");
mNeedsUpdate = true;
return;
}
//////////
/// Traverse children
SoGroup::GLRender(action);
/// Traverse children
//////////
FboSetup * fbo = SoXipFboElement::getActive(action->getState(), this);
// Detect any change in fbo handle
if (mFboIn.fboHandle != fbo->fboHandle)
SoDebugError::postWarning("SoXipFbo",
"Keep Fbo bound during traversal (%d %d)", mFboIn.fboHandle, fbo->fboHandle);
//SoDebugError::postInfo(__FUNCTION__, "(3) in mod out (%d %d %d)", mFboIn.isDirty, mFboMod.isDirty, mFboOut.isDirty);
// Reflect changes if change since last run
if (mFboMod != *fbo)
{
mFboMod = *fbo;
mFboOut = *fbo;
int currUnit = SoXipMultiTextureElement::getCurrentUnit(action->getState());
int freeUnit = SoXipMultiTextureElement::getFreeUnit(action->getState());
SoXipMultiTextureElement::setUnit(action->getState(), freeUnit);
processColorMods();
processDepthMods();
SoXipMultiTextureElement::setUnit(action->getState(), currUnit);
mErrorInSetup = false;
}
else
mFboOut.isDirty = false;
//SoDebugError::postInfo(__FUNCTION__, "(4) in mod out (%d %d %d)", mFboIn.isDirty, mFboMod.isDirty, mFboOut.isDirty);
SoXipDrawBuffersElement::set(action->getState(), this, mFboOut.numColorAttachments);
// Everything is now attached so test completeness
if (!mErrorInSetup)
mFboOut.isComplete = checkFramebufferStatus();
if (!mFboOut.isComplete)
mErrorInSetup = true;
// Activate FBO element (also sets draw buffer element)
mFboOut.isOpen = false;
SoXipFboElement::set(action->getState(), this, mFboOut);
//SoDebugError::postInfo(__FUNCTION__, "(5) in mod out (%d %d %d)", mFboIn.isDirty, mFboMod.isDirty, mFboOut.isDirty);
if (!mFboOut.isComplete)
SoXipDrawBuffersElement::set(action->getState(), this, 0);
}
