void MotionBlurVelocityBufferApp::dilateVelocity()
{
gl::ScopedFramebuffer fbo( mVelocityDilationBuffer );
gl::ScopedViewport viewport( ivec2( 0, 0 ), mVelocityDilationBuffer->getSize() );
gl::ScopedMatrices matrices;
gl::setMatricesWindowPersp( mVelocityDilationBuffer->getSize() );
{ // downsample velocity into tilemax
gl::ScopedTextureBind tex( mGBuffer->getTexture2d( G_VELOCITY ), 0 );
gl::ScopedGlslProg prog( mTileProg );
gl::drawBuffer( DILATE_TILE_MAX );
mTileProg->uniform( "uVelocityMap", 0 );
mTileProg->uniform( "uTileSize", mTileSize );
gl::drawSolidRect( mVelocityDilationBuffer->getBounds() );
}
{ // build max neighbors from tilemax
gl::ScopedTextureBind tex( mVelocityDilationBuffer->getTexture2d( DILATE_TILE_MAX ), 0 );
gl::ScopedGlslProg prog( mNeighborProg );
gl::drawBuffer( DILATE_NEIGHBOR_MAX );
mNeighborProg->uniform( "uTileMap", 0 );
gl::drawSolidRect( mVelocityDilationBuffer->getBounds() );
}
}
void NormalGetterApp::normalize(gl::TextureRef _tex){
{
gl::ScopedMatrices push;
gl::ScopedFramebuffer fbo(mOutputFbo);
gl::clear();
ci::gl::setMatricesWindow( mOutputFbo->getSize() );
ci::gl::ScopedViewport view( ci::vec2(0), mOutputFbo->getSize() );
gl::ScopedGlslProg mGlsl(mNormalGlsl);
gl::ScopedTextureBind tex0(_tex);
mNormalGlsl->uniform("uSampler", 0);
mNormalGlsl->uniform("u_textureSize", vec2(_tex->getWidth(), _tex->getHeight()));
mNormalGlsl->uniform("bias", bias);
mNormalGlsl->uniform("invertR", float(invertR ? -1.0 : 1.0) );
mNormalGlsl->uniform("invertG", float(invertG ? -1.0 : 1.0));
gl::drawSolidRect(Rectf(vec2(0), _tex->getSize()));
}
if( pushFramesToBuffer){
mPreprocessedImages->pushFront(std::make_pair(mOutputFbo->getColorTexture()->createSource(), currentFrame));
if(currentFrame == mMovie->getNumFrames()){
pushFramesToBuffer = false;
mMovie->setLoop(true);
mMovie->seekToStart();
}
currentFrame++;
}
}
void ciApp::update()
{
auto get_center_rect = [&](Area area) ->Rectf { return Rectf(area).getCenteredFit(getWindowBounds(), true); };
spout_receiver->receive(mTexture);
filter->update(mTexture);
vector_blur.update(filter->getTexture());
{
const gl::ScopedColor scpColor(Color::white());
const gl::ScopedFramebuffer scpFbo(mFbo);
gl::clear();
const gl::ScopedViewport scpView(ivec2(0), mFbo->getSize());
const gl::ScopedMatrices scpMatrces;
gl::setMatricesWindow(mFbo->getSize());
auto tex = filter->getTexture();
//auto tex = vector_blur.getTexture();
gl::draw(tex);
}
spout_sender->send(mTexture);
#if 0
// We copy the magnitude spectrum out from the Node on the main thread, once per update:
mMagSpectrum = mMonitorSpectralNode->getMagSpectrum();
#endif
}
void SMAA::apply( gl::FboRef destination, gl::FboRef source )
{
gl::ScopedFramebuffer fbo( destination );
gl::ScopedViewport viewport( 0, 0, destination->getWidth(), destination->getHeight() );
gl::ScopedMatrices matrices;
gl::setMatricesWindow( destination->getSize() );
// Make sure our source is linearly interpolated.
GLenum minFilter = source->getFormat().getColorTextureFormat().getMinFilter();
GLenum magFilter = source->getFormat().getColorTextureFormat().getMagFilter();
bool filterChanged = ( minFilter != GL_LINEAR || magFilter != GL_LINEAR );
if( filterChanged ) {
source->getColorTexture()->setMinFilter( GL_LINEAR );
source->getColorTexture()->setMagFilter( GL_LINEAR );
}
// Perform SMAA anti-aliasing.
gl::clear( ColorA( 0, 0, 0, 0 ) );
draw( source->getColorTexture(), destination->getBounds() );
// Restore texture parameters.
if( filterChanged ) {
source->getColorTexture()->setMinFilter( minFilter );
source->getColorTexture()->setMagFilter( magFilter );
}
}
// Render the color cube into the FBO
void FboBasicApp::renderSceneToFbo()
{
// this will restore the old framebuffer binding when we leave this function
// on non-OpenGL ES platforms, you can just call mFbo->unbindFramebuffer() at the end of the function
// but this will restore the "screen" FBO on OpenGL ES, and does the right thing on both platforms
gl::ScopedFramebuffer fbScp( mFbo );
// clear out the FBO with blue
gl::clear( Color( 0.25, 0.5f, 1.0f ) );
// setup the viewport to match the dimensions of the FBO
gl::ScopedViewport scpVp( ivec2( 0 ), mFbo->getSize() );
// setup our camera to render the torus scene
CameraPersp cam( mFbo->getWidth(), mFbo->getHeight(), 60.0f );
cam.setPerspective( 60, mFbo->getAspectRatio(), 1, 1000 );
cam.lookAt( vec3( 2.8f, 1.8f, -2.8f ), vec3( 0 ));
gl::setMatrices( cam );
// set the modelview matrix to reflect our current rotation
gl::setModelMatrix( mRotation );
// render the color cube
gl::ScopedGlslProg shaderScp( gl::getStockShader( gl::ShaderDef().color() ) );
gl::color( Color( 1.0f, 0.5f, 0.25f ) );
gl::drawColorCube( vec3( 0 ), vec3( 2.2f ) );
gl::color( Color::white() );
}
void FaceOff::updateClone()
{
gl::ScopedMatrices mvp;
gl::setMatricesWindow(mRenderedOfflineFaceFbo->getSize());
gl::ScopedViewport viewport(0, 0, mRenderedOfflineFaceFbo->getWidth(), mRenderedOfflineFaceFbo->getHeight());
// TODO: merge these two passes w/ MRTs
{
gl::ScopedFramebuffer fbo(mRenderedOfflineFaceFbo);
gl::ScopedGlslProg glsl(gl::getStockShader(gl::ShaderDef().texture()));
gl::ScopedTextureBind t0(mOfflineFaceTex, 0);
gl::clear(ColorA::black(), false);
gl::draw(mFaceMesh);
}
if (!MOVIE_MODE)
{
{
gl::ScopedFramebuffer fbo(mFaceMaskFbo);
gl::clear(ColorA::black(), false);
gl::draw(mFaceMesh);
}
// TODO: add gl::ScopedMatrices in mClone.update()
mClone.update(mRenderedOfflineFaceFbo->getColorTexture(), mCapture.texture, mFaceMaskFbo->getColorTexture());
mHasNewRenderedFace = true;
}
}
// Render our scene into the FBO (a cube)
void FboMultipleRenderTargetsApp::renderSceneToFbo()
{
// setup our camera to render our scene
CameraPersp cam( mFbo->getWidth(), mFbo->getHeight(), 60 );
cam.setPerspective( 60, mFbo->getAspectRatio(), 1, 1000 );
cam.lookAt( vec3( 2.8f, 1.8f, -2.8f ), vec3( 0 ) );
// bind our framebuffer in a safe way:
gl::ScopedFramebuffer fboScope( mFbo );
// clear out both of the attachments of the FBO with black
gl::clear();
// setup the viewport to match the dimensions of the FBO, storing the previous state
gl::ScopedViewport viewportScope( ivec2( 0 ), mFbo->getSize() );
// store matrices before updating for CameraPersp
gl::ScopedMatrices matScope;
gl::setMatrices( cam );
// set the modelview matrix to reflect our current rotation
gl::multModelMatrix( mRotation );
// render the torus with our multiple-output shader
gl::ScopedGlslProg glslScope( mGlslMultipleOuts );
gl::drawCube( vec3( 0 ), vec3( 2.2f ) );
}
void NormalGetterApp::updateFbos(){
if( mMovie && !makeMovie){
if(!mFbo) mFbo = gl::Fbo::create(movieSize.x, movieSize.y);
if( !mOutputFbo) mOutputFbo = gl::Fbo::create(movieSize.x, movieSize.y);
if(mFbo){
gl::ScopedMatrices push;
gl::ScopedFramebuffer fbo(mFbo);
ci::gl::clear(ci::Color(0,0,0));
ci::gl::setMatricesWindow( mFbo->getSize() );
ci::gl::ScopedViewport view( ci::vec2(0), mFbo->getSize() );
gl::draw(mMovie->getTexture());
}
}
}
void MotionBlurFboApp::draw()
{
gl::viewport( vec2(), mAccumFbo->getSize() );
if( ! mPaused ) {
// make 'mAccumFbo' the active framebuffer
gl::ScopedFramebuffer fbScp( mAccumFbo );
// clear out both of our FBOs
gl::clear( Color::black() );
gl::color( 1, 1, 1, 1 );
// iterate all the sub-frames
double startTime = getElapsedSeconds();
for( int i = 0; i < SUBFRAMES; ++i ) {
// draw the Cube's sub-frame into mFbo
gl::enableDepth();
gl::enableAlphaBlending();
mFbo->bindFramebuffer();
gl::clear();
gl::enableDepth();
gl::setMatrices( mCam );
updateCubeRotation( startTime + i / (float)SUBFRAMES );
gl::multModelMatrix( mCubeRotation );
mBatch->draw();
// now add this frame to the accumulation FBO
mAccumFbo->bindFramebuffer();
gl::setMatricesWindow( mAccumFbo->getSize() );
gl::enableAdditiveBlending();
gl::enableDepth( false );
gl::draw( mFbo->getColorTexture() );
}
}
gl::disableDepthRead();
gl::disableAlphaBlending();
// set the color to be 1/SUBFRAMES, which divides the HDR image by the number of sub-frames we rendered
gl::color( 1.0f / SUBFRAMES, 1.0f / SUBFRAMES, 1.0f / SUBFRAMES, 1 );
gl::setMatricesWindow( getWindowSize() );
gl::draw( mAccumFbo->getColorTexture() );
}
void GpuParrallelReductionApp::update()
{
{
gl::ScopedFramebuffer scopedFbo( mFbo );
gl::ScopedViewport scopedViewport( vec2(0), mFbo->getSize() );
gl::ScopedDepth scopedDepth( true );
gl::ScopedBlend scopedBlend( false );
gl::setMatrices( mCamera );
gl::clear( ColorA::gray( 0.0f ) );
gl::drawColorCube( vec3(0), vec3(1) );
gl::drawCube( vec3(0,0,-0.5), vec3(0.1) );
}
}
void ShadowMappingBasic::renderDepthFbo()
{
// Set polygon offset to battle shadow acne
gl::enable( GL_POLYGON_OFFSET_FILL );
glPolygonOffset( 2.0f, 2.0f );
// Render scene to fbo from the view of the light
gl::ScopedFramebuffer fbo( mFbo );
gl::ScopedViewport viewport( vec2( 0.0f ), mFbo->getSize() );
gl::clear( Color::black() );
gl::color( Color::white() );
gl::setMatrices( mLightCam );
drawScene( true );
// Disable polygon offset for final render
gl::disable( GL_POLYGON_OFFSET_FILL );
}
void FXAA::apply( const gl::FboRef &destination, const gl::FboRef &source )
{
gl::ScopedFramebuffer fbo( destination );
gl::ScopedViewport viewport( 0, 0, destination->getWidth(), destination->getHeight() );
gl::ScopedMatrices matrices;
gl::setMatricesWindow( destination->getSize(), false );
// Make sure our source is linearly interpolated.
GLenum minFilter = source->getFormat().getColorTextureFormat().getMinFilter();
GLenum magFilter = source->getFormat().getColorTextureFormat().getMagFilter();
source->getColorTexture()->setMinFilter( GL_LINEAR );
source->getColorTexture()->setMagFilter( GL_LINEAR );
// Perform FXAA anti-aliasing.
gl::clear( ColorA( 0, 0, 0, 0 ) );
draw( source->getColorTexture(), destination->getBounds() );
// Restore texture parameters.
source->getColorTexture()->setMinFilter( minFilter );
source->getColorTexture()->setMagFilter( magFilter );
}
void TextParticlesApp::drawTextToFbo()
{
{
vec2 size = mTextFbo->getSize();
gl::ScopedFramebuffer scpFbo( mTextFbo );
gl::clear( ColorA( 0 , 0, 0, 0 ) );
gl::ScopedViewport scpVp( ivec2(), size );
gl::ScopedMatrices scpMtrx;
gl::ScopedColor scpCol( 1, 1, 1);
vec2 stringSize = mTextureFont->measureString( mString );
float descent = mTextureFont->getDescent();
float ascent = mTextureFont->getAscent();
mTextSize = stringSize + vec2( 0, descent );
// OPTIONALLY, draw the text metrics
/*
// string size - RED
gl::color(1, 0, 0);
gl::drawSolidRect( Rectf( -10, 0, stringSize.x + 10.0, stringSize.y ) );
// ascent - CYAN
gl::color(0, 1, 1);
gl::drawSolidRect( Rectf( 0, stringSize.y - ascent, stringSize.x, ascent ) );
// descent - YELLOW
gl::color(1, 1, 0);
gl::drawSolidRect( Rectf( 0, stringSize.y-descent, stringSize.x, stringSize.y ) );
// above ascent
gl::color( 0, 1, 0 );
gl::drawSolidRect( Rectf( 0, 0, stringSize.x, stringSize.y-ascent ) );*/
// DRAW string to FBO
gl::color(1, 1, 1);
mTextureFont->drawString( mString, vec2( 0, stringSize.y - descent ) );
}
// GET Texture from FBO
mTextSurf = Surface( mTextFbo->readPixels8u( mTextFbo->getBounds() ) );
}
void ciApp::update()
{
// update params
double current_time = ci::app::getElapsedSeconds();
time_step = glm::clamp(current_time - elapsed_time, 1.0 / 120.0, 1.0 / 30.0);
elapsed_time = current_time;
int interval = 100000;
double value = int(current_time * 1000) % interval / double(interval);
time_value = sin(value * glm::two_pi<double>()) * 0.5 + 0.5; // continuous sin value
// update fbo
{
const gl::ScopedFramebuffer scp_fbo(fbo);
const gl::ScopedViewport scp_vp(ivec2(0), fbo->getSize());
gl::clear();
const gl::ScopedDepth scp_depth(true);
const gl::ScopedMatrices scp_m;
gl::setMatrices(camera);
gl::drawColorCube(vec3(0), vec3(1, 2, 3));
}
}
vec4 GpuParrallelReductionApp::findMindMax()
{
// init the programs, fbo and texture used for the parrallel reduction
static gl::FboRef sReductionFbo, sReadFbo;
static gl::Texture2dRef sReductionTexture0;
static gl::GlslProgRef sReductionProg, sCopyProg;
auto startingSize = mFbo->getSize() / 2;
if( !sReductionFbo || sReductionFbo->getSize() != startingSize ) {
sReductionTexture0 = gl::Texture2d::create( startingSize.x, startingSize.y, gl::Texture2d::Format().minFilter( GL_NEAREST_MIPMAP_NEAREST ).magFilter( GL_NEAREST ).mipmap().immutableStorage() );
sReductionFbo = gl::Fbo::create( startingSize.x, startingSize.y, gl::Fbo::Format()
.attachment( GL_COLOR_ATTACHMENT0, sReductionTexture0 )
.disableDepth() );
sReductionProg = gl::GlslProg::create( loadAsset( "minMax.vert" ), loadAsset( "minMax.frag" ) );
}
// start reduction profiling
static auto sTimer0 = gl::QueryTimeSwapped::create();
sTimer0->begin();
// attach the main level of the texture
gl::ScopedFramebuffer scopedFbo( sReductionFbo );
glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, sReductionTexture0->getId(), 0 );
// start by blitting the main fbo into the reduction one
mFbo->blitTo( sReductionFbo, mFbo->getBounds(), sReductionFbo->getBounds(), GL_NEAREST );
// bind the reduction program and texture and disable blending
gl::ScopedMatrices scopedMatrices;
gl::ScopedGlslProg scopedGlsl( sReductionProg );
gl::ScopedBlend scopedBlend( false );
gl::ScopedTextureBind scopedTexBind0( sReductionTexture0, 0 );
sReductionProg->uniform( "uTex0", 0 );
// iterate trough each mipmap level
int numMipMaps = gl::Texture2d::requiredMipLevels( startingSize.x, startingSize.y, 0 );
for( int level = 1; level < numMipMaps; ++level ) {
// attach the current mipmap level to the framebuffer and limit texture sampling to the previous level
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, level - 1 );
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, level - 1 );
glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, sReductionTexture0->getId(), level );
// get the current mipmap size and update uniforms
vec2 size = gl::Texture2d::calcMipLevelSize( level, sReductionFbo->getWidth(), sReductionFbo->getHeight() );
sReductionProg->uniform( "uInvSize", vec2( 1.0f ) / vec2( size ) );
// render a fullscreen quad
gl::ScopedViewport scopedViewport( ivec2( 0 ), size );
gl::setMatricesWindow( size.x, size.y );
gl::drawSolidRect( Rectf( vec2( 0.0f ), vec2( size ) ) );
}
// stop reduction profiling
sTimer0->end();
mReductionTime = sTimer0->getElapsedMilliseconds();
// start readback profiling
static auto sTimer1 = gl::QueryTimeSwapped::create();
sTimer1->begin();
// read back to the cpu and find the max value
vec4 max( 0.0f );
ivec2 readSize = gl::Texture2d::calcMipLevelSize( numMipMaps - 1, startingSize.x, startingSize.y );
Surface8u surface( readSize.x, readSize.y, true );
glGetTexImage( sReductionTexture0->getTarget(), numMipMaps - 1, GL_RGBA, GL_UNSIGNED_BYTE, surface.getData() );
auto it = surface.getIter();
while( it.line() ) { while( it.pixel() ) {
max = glm::max( max, vec4( it.r(), it.g(), it.b(), it.a() ) );
} }
// stop readback profiling
sTimer1->end();
mReadBackTime = sTimer1->getElapsedMilliseconds();
return max;
}