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Create new FBO if Canvas render target size chanages

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As doesnt seem to work to just resize the texture, if changing
the size of the Canvas render target a new FBO is created and
placed on all active placements.
This commit is contained in:
Thomas Geymayer 2012-12-09 23:08:04 +01:00
parent a882263033
commit 2263823f75
4 changed files with 57 additions and 19 deletions
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39
simgear/canvas/Canvas.cxx
View File

@ -159,15 +159,30 @@ namespace canvas
//----------------------------------------------------------------------------
void Canvas::update(double delta_time_sec)
{
if( !_texture.serviceable() )
{
if( _status != STATUS_OK )
return;
if( (!_texture.serviceable() && _status != STATUS_DIRTY)
|| (_status & CREATE_FAILED) )
return;
if( _status == STATUS_DIRTY )
{
_texture.setSize(_size_x, _size_y);
_texture.useImageCoords(true);
_texture.useStencil(true);
_texture.allocRT(/*_camera_callback*/);
if( !_texture.serviceable() )
{
_texture.useImageCoords(true);
_texture.useStencil(true);
_texture.allocRT(/*_camera_callback*/);
}
else
{
// Resizing causes a new texture to be created so we need to reapply all
// existing placements
for(size_t i = 0; i < _placements.size(); ++i)
{
if( !_placements[i].empty() )
_dirty_placements.push_back( _placements[i].front()->getProps() );
}
}
osg::Camera* camera = _texture.getCamera();
@ -183,6 +198,8 @@ namespace canvas
if( _texture.serviceable() )
{
setStatusFlags(STATUS_OK);
setStatusFlags(STATUS_DIRTY, false);
_render_dirty = true;
}
else
{
@ -273,8 +290,7 @@ namespace canvas
if( _size_x == sx )
return;
_size_x = sx;
// TODO resize if texture already allocated
setStatusFlags(STATUS_DIRTY);
if( _size_x <= 0 )
setStatusFlags(MISSING_SIZE_X);
@ -291,8 +307,7 @@ namespace canvas
if( _size_y == sy )
return;
_size_y = sy;
// TODO resize if texture already allocated
setStatusFlags(STATUS_DIRTY);
if( _size_y <= 0 )
setStatusFlags(MISSING_SIZE_Y);
@ -545,7 +560,7 @@ namespace canvas
_status_msg = "Missing size-y";
else if( _status & CREATE_FAILED )
_status_msg = "Creating render target failed";
else if( _status == STATUS_OK && !_texture.serviceable() )
else if( _status == STATUS_DIRTY )
_status_msg = "Creation pending...";
else
_status_msg = "Ok";

7
simgear/canvas/Canvas.hxx
View File

@ -46,9 +46,10 @@ namespace canvas
enum StatusFlags
{
STATUS_OK,
MISSING_SIZE_X = 0x0001,
MISSING_SIZE_Y = 0x0002,
CREATE_FAILED = 0x0004
STATUS_DIRTY = 1,
MISSING_SIZE_X = STATUS_DIRTY << 1,
MISSING_SIZE_Y = MISSING_SIZE_X << 1,
CREATE_FAILED = MISSING_SIZE_Y << 1
};
/**

28
simgear/canvas/ODGauge.cxx
View File

@ -70,8 +70,7 @@ namespace canvas
//----------------------------------------------------------------------------
ODGauge::~ODGauge()
{
if( camera.valid() && _system_adapter )
_system_adapter->removeCamera(camera.get());
clear();
}
//----------------------------------------------------------------------------
@ -86,8 +85,10 @@ namespace canvas
_size_x = size_x;
_size_y = size_y < 0 ? size_x : size_y;
if( texture.valid() )
texture->setTextureSize(_size_x, _size_x);
if( serviceable() )
reinit();
else if( texture )
texture->setTextureSize(_size_x, _size_y);
}
//----------------------------------------------------------------------------
@ -217,6 +218,25 @@ namespace canvas
rtAvailable = true;
}
//----------------------------------------------------------------------------
void ODGauge::reinit()
{
osg::NodeCallback* cull_callback = camera ? camera->getCullCallback() : 0;
clear();
allocRT(cull_callback);
}
//----------------------------------------------------------------------------
void ODGauge::clear()
{
if( camera.valid() && _system_adapter )
_system_adapter->removeCamera(camera.get());
camera.release();
texture.release();
rtAvailable = false;
}
//----------------------------------------------------------------------------
void ODGauge::updateCoordinateFrame()
{

2
simgear/canvas/ODGauge.hxx
View File

@ -123,6 +123,8 @@ namespace canvas
// Real initialization function. Bad name.
void allocRT(osg::NodeCallback* camera_cull_callback = 0);
void reinit();
void clear();
protected: