void update( const FrameData& frameData )
{
initTransferFunction( frameData.getRenderSettings().getTransferFunction( ));
_nSamplesPerRay = frameData.getVRParameters().getSamplesPerRay();
_computedSamplesPerRay = _nSamplesPerRay;
_nSamplesPerPixel = frameData.getVRParameters().getSamplesPerPixel();
}
RayCastRenderer::RayCastRenderer( const GLEWContext* glewContext,
const uint32_t samples,
const uint32_t componentCount,
const GLenum gpuDataType,
const GLint internalFormat )
: Renderer( componentCount, gpuDataType, internalFormat )
, nSamples_( samples )
, transferFunctionTexture_( 0 )
{
if( !glewContext )
LBTHROW( std::runtime_error( "No GLEW context given" +
where( __FILE__, __LINE__ )));
TransferFunction1D< unsigned char > transferFunction;
initTransferFunction( transferFunction );
shadersPtr_.reset( new GLSLShaders );
// TODO: Add the shaders from resource directory
const int error = shadersPtr_->loadShaders( ShaderData( vertRayCast_glsl,
fragRayCast_glsl ));
if( error != GL_NO_ERROR )
LBTHROW( std::runtime_error( "Can't load glsl shaders: " +
eq::glError( error ) +
where( __FILE__, __LINE__ )));
framebufferTempTexturePtr_.reset(
new eq::util::Texture( GL_TEXTURE_RECTANGLE_ARB, glewContext ));
}
Impl( const uint32_t samplesPerRay,
const uint32_t samplesPerPixel,
const VolumeInformation& volInfo )
: _framebufferTexture( GL_TEXTURE_RECTANGLE_ARB, glewGetContext( ))
, _nSamplesPerRay( samplesPerRay )
, _nSamplesPerPixel( samplesPerPixel )
, _computedSamplesPerRay( samplesPerRay )
, _volInfo( volInfo )
, _transferFunctionTexture( 0 )
{
TransferFunction1D transferFunction;
initTransferFunction( transferFunction );
// TODO: Add the shaders from resource directory
const int error = _shaders.loadShaders( ShaderData( vertRayCast_glsl,
fragRayCast_glsl ));
if( error != GL_NO_ERROR )
LBTHROW( std::runtime_error( "Can't load glsl shaders: " +
eq::glError( error ) +
where( __FILE__, __LINE__ )));
}
