// 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 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 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::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 FboBasicApp::draw()
{
// clear the window to gray
gl::clear( Color( 0.35f, 0.35f, 0.35f ) );
// setup our camera to render the cube
CameraPersp cam( getWindowWidth(), getWindowHeight(), 60.0f );
cam.setPerspective( 60, getWindowAspectRatio(), 1, 1000 );
cam.lookAt( vec3( 2.6f, 1.6f, -2.6f ), vec3( 0 ) );
gl::setMatrices( cam );
// use the scene we rendered into the FBO as a texture
mFbo->bindTexture();
// draw a cube textured with the FBO
{
gl::ScopedGlslProg shaderScp( gl::getStockShader( gl::ShaderDef().texture() ) );
gl::drawCube( vec3( 0 ), vec3( 2.2f ) );
}
// show the FBO color texture in the upper left corner
gl::setMatricesWindow( toPixels( getWindowSize() ) );
gl::draw( mFbo->getColorTexture(), Rectf( 0, 0, 128, 128 ) );
// and draw the depth texture adjacent
gl::draw( mFbo->getDepthTexture(), Rectf( 128, 0, 256, 128 ) );
}
void ciApp::setup()
{
setWindowSize(1280, 720);
setFrameRate(60.f);
int maxVertUniformsVect;
glGetIntegerv(GL_MAX_VERTEX_UNIFORM_VECTORS, &maxVertUniformsVect);
mSize = 0;
mSizePrev = -1;
mSizeMax = 17;
mAmplifier = 1.f;
mExposure = 1.f;
mGamma = 2.2f;
printf("max uniform: %i, %i\n", maxVertUniformsVect, mSizeMax);
mParams = params::InterfaceGl::create(getWindow(), "App parameters", ivec2(250, 300));
mParams->setPosition(ivec2(20, 250));
mTexture = gl::Texture::create(loadImage(loadFile(data_path + "demo.png")));
mFbo = gl::Fbo::create(mTexture->getWidth(), mTexture->getHeight(), gl::Fbo::Format().colorTexture());
//mShader.setup("filterGaussianBlur");
filter = hb::GlslFilter::create(mTexture->getSize());
filter->setParams(mParams);
vector_blur.setup(getWindowSize());
vector_blur.setParams(mParams);
spout_receiver = hb::Receiver::create("Spout DX11 Sender");
//spout_receiver = hbSpoutReceiver::create("KidsLandSea");
spout_sender = hb::Sender::create("cinder_spout", mFbo->getWidth(), mFbo->getHeight());
#if 0
auto ctx = audio::Context::master();
// The InputDeviceNode is platform-specific, so you create it using a special method on the Context:
mInputDeviceNode = ctx->createInputDeviceNode();
// By providing an FFT size double that of the window size, we 'zero-pad' the analysis data, which gives
// an increase in resolution of the resulting spectrum data.
auto monitorFormat = audio::MonitorSpectralNode::Format().fftSize(2048).windowSize(1024);
mMonitorSpectralNode = ctx->makeNode(new audio::MonitorSpectralNode(monitorFormat));
mInputDeviceNode >> mMonitorSpectralNode;
// InputDeviceNode (and all InputNode subclasses) need to be enabled()'s to process audio. So does the Context:
mInputDeviceNode->enable();
ctx->enable();
#endif
}
void NormalGetterApp::draw()
{
gl::clear( Color( 0, 0, 0 ) );
if(mFbo && mOutputFbo){
normalize(mFbo->getColorTexture());
gl::draw(mOutputFbo->getColorTexture());
}
// if(mFbo) gl::draw(mFbo->getColorTexture());
mStatus->draw();
mParams->draw();
}
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 );
}
}
void PostProcessingAAApp::render()
{
// Bind the Fbo. Automatically unbinds it at the end of this function.
gl::ScopedFramebuffer fbo( mFboScene );
// Clear the buffer.
gl::clear( ColorA( 0, 0, 0, 0 ) );
gl::color( Color::white() );
// Render our scene.
gl::pushViewport( 0, 0, mFboScene->getWidth(), mFboScene->getHeight() );
mPistons.draw( mCamera, float( mTime ) );
gl::popViewport();
}
void MotionBlurVelocityBufferApp::drawBlurredContent()
{
gl::ScopedTextureBind colorTex( mGBuffer->getTexture2d( G_COLOR ), 0 );
gl::ScopedTextureBind velTex( mGBuffer->getTexture2d( G_VELOCITY ), 1 );
gl::ScopedTextureBind neigborTex( mVelocityDilationBuffer->getTexture2d( DILATE_NEIGHBOR_MAX ), 2 );
gl::ScopedGlslProg prog( mMotionBlurProg );
gl::ScopedBlendPremult blend;
mMotionBlurProg->uniform( "uColorMap", 0 );
mMotionBlurProg->uniform( "uVelocityMap", 1 );
mMotionBlurProg->uniform( "uNeighborMaxMap", 2 );
mMotionBlurProg->uniform( "uNoiseFactor", mBlurNoise );
mMotionBlurProg->uniform( "uSamples", mSampleCount );
gl::drawSolidRect( getWindowBounds() );
}
void TextParticlesApp::draw()
{
gl::clear( Color( 0, 0, 0 ) );
gl::color( 1, 1, 1 );
gl::enableAlphaBlending();
{
gl::ScopedMatrices scpMtrx;
// SET matrices so that by default, we are looking at a rect the size of the window
lookAtTexture( mCam, getWindowSize() );
gl::translate( mTextSize * vec2( -0.5 ) );
gl::ScopedDepth scpDepth( true );
// gl::ScopedColor scpColor( 1, 0, 0 );
// gl::drawStrokedRect( Rectf( 0, 0, mTextSize.x, mTextSize.y ) );
gl::color( Color::white() );
if( mActive ){
gl::ScopedGlslProg render( mRenderProg );
gl::ScopedVao vao( mAttributes[mSourceIndex] );
gl::context()->setDefaultShaderVars();
gl::drawArrays( GL_POINTS, 0, mTextParticleCount );
}else{
if( mString.length() > 0 )
gl::draw( mTextFbo->getColorTexture() );
}
}
mParams->draw();
}
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 ciApp::draw()
{
auto viewport = getWindowBounds();
gl::clear();
{
auto rect = Rectf(fbo->getBounds()).getCenteredFit(viewport, false);
gl::draw(fbo->getColorTexture(), rect);
}
if (is_debug_visible)
{
params->draw();
const gl::ScopedColor scpColor(Color::white());
auto tex = getInfoTexture(getAverageFps(), time_step, elapsed_time, time_value);
ivec2 pos(20, getWindowHeight() - tex->getHeight() - 20);
gl::draw(tex, pos);
}
}
void FboMultipleRenderTargetsApp::draw()
{
gl::clear( Color::gray( 0.35f ) );
gl::setMatricesWindow( getWindowSize() );
// draw the two textures we've created side-by-side
auto tex0 = mFbo->getTexture2d( GL_COLOR_ATTACHMENT0 );
auto tex1 = mFbo->getTexture2d( GL_COLOR_ATTACHMENT1 );
gl::draw( tex0, tex0->getBounds() );
gl::draw( tex1, tex1->getBounds() + vec2( tex1->getWidth(), 0 ) );
}
void GpuParrallelReductionApp::draw()
{
gl::clear( Color( 0, 0, 0 ) );
gl::setMatricesWindow( getWindowSize() );
gl::draw( mFbo->getColorTexture() );
auto max = findMindMax();
gl::drawStringCentered( "Current Max value: " + toString( max ), getWindowCenter() - vec2( 0, 10 ) );
gl::drawStringCentered( "Reduction time " + to_string( mReductionTime ) + " ms", getWindowCenter() + vec2( 0, 12 ) );
gl::drawStringCentered( "Read back time " + to_string( mReadBackTime ) + " ms", getWindowCenter() + vec2( 0, 25 ) );
}
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 ShadowMappingBasic::setup()
{
mLightPos = vec3( 0.0f, 5.0f, 1.0f );
gl::Texture2d::Format depthFormat;
#if defined( CINDER_GL_ES )
depthFormat.setInternalFormat( GL_DEPTH_COMPONENT16 );
#else
depthFormat.setInternalFormat( GL_DEPTH_COMPONENT32F );
depthFormat.setCompareMode( GL_COMPARE_REF_TO_TEXTURE );
#endif
depthFormat.setMagFilter( GL_LINEAR );
depthFormat.setMinFilter( GL_LINEAR );
depthFormat.setWrap( GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE );
depthFormat.setCompareFunc( GL_LEQUAL );
mShadowMapTex = gl::Texture2d::create( FBO_WIDTH, FBO_HEIGHT, depthFormat );
mCam.setPerspective( 40.0f, getWindowAspectRatio(), 0.5f, 500.0f );
gl::Fbo::Format fboFormat;
fboFormat.attachment( GL_DEPTH_ATTACHMENT, mShadowMapTex );
mFbo = gl::Fbo::create( FBO_WIDTH, FBO_HEIGHT, fboFormat );
// Set up camera from the light's viewpoint
mLightCam.setPerspective( 100.0f, mFbo->getAspectRatio(), 0.5f, 10.0f );
mLightCam.lookAt( mLightPos, vec3( 0.0f ) );
try {
#if defined( CINDER_GL_ES )
mGlsl = gl::GlslProg::create( loadAsset( "shadow_shader_es2.vert" ), loadAsset( "shadow_shader_es2.frag" ) );
#else
mGlsl = gl::GlslProg::create( loadAsset( "shadow_shader.vert" ), loadAsset( "shadow_shader.frag" ) );
#endif
}
catch ( Exception &exc ) {
CI_LOG_EXCEPTION( "glsl load failed", exc );
std::terminate();
}
auto teapot = geom::Teapot().subdivisions( 8 );
mTeapotBatch = gl::Batch::create( teapot, gl::getStockShader( gl::ShaderDef() ) );
mTeapotShadowedBatch = gl::Batch::create( teapot, mGlsl );
auto floor = geom::Cube().size( 10.0f, 0.5f, 10.0f );
mFloorBatch = gl::Batch::create( floor, gl::getStockShader( gl::ShaderDef() ) );
mFloorShadowedBatch = gl::Batch::create( floor, mGlsl );
gl::enableDepthRead();
gl::enableDepthWrite();
}
void MotionBlurVelocityBufferApp::drawVelocityBuffers()
{
gl::ScopedGlslProg prog( mVelocityRenderProg );
gl::ScopedModelMatrix matrix;
gl::setDefaultShaderVars();
float width = 200.0f;
float height = width / Rectf( mVelocityDilationBuffer->getBounds() ).getAspectRatio();
Rectf rect( 0.0f, 0.0f, width, height );
gl::ScopedTextureBind velTex( mGBuffer->getTexture2d( G_VELOCITY ), 0 );
gl::translate( getWindowWidth() - width - 10.0f, 10.0f );
gl::drawSolidRect( rect );
gl::ScopedTextureBind tileTex( mVelocityDilationBuffer->getTexture2d( DILATE_TILE_MAX ), 0 );
gl::translate( 0.0f, height + 10.0f );
gl::drawSolidRect( rect );
gl::ScopedTextureBind neigborTex( mVelocityDilationBuffer->getTexture2d( DILATE_NEIGHBOR_MAX ), 0 );
gl::translate( 0.0f, height + 10.0f );
gl::drawSolidRect( rect );
}
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 ViewportArrayApp::draw()
{
// clear the screen and set matrices
gl::clear( Color( 0, 0, 0 ) );
gl::setMatricesWindow( getWindowSize() );
// render our fbo texture
gl::draw( mFbo->getColorTexture() );
// and viewport bounds
for( auto viewport : mViewports ) {
gl::drawStrokedRect( viewport );
}
}
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 MotionBlurVelocityBufferApp::draw()
{
mGpuTimer->begin();
mCpuTimer.start();
gl::clear( Color( 0, 0, 0 ) );
gl::ScopedMatrices matrices;
gl::setMatricesWindowPersp( getWindowSize(), 60.0f, 1.0f, 5000.0f );
gl::ScopedViewport viewport( vec2(0), getWindowSize() );
gl::ScopedBlend blend(false);
gl::draw( mBackground, getWindowBounds() );
fillGBuffer();
if( ! mBlurEnabled ) {
gl::ScopedBlendAlpha blend;
gl::draw( mGBuffer->getColorTexture() );
}
else {
dilateVelocity();
drawBlurredContent();
}
if( mDisplayVelocityBuffers ) {
drawVelocityBuffers();
}
mCpuTimer.stop();
mGpuTimer->end();
mAverageCpuTime = (mCpuTimer.getSeconds() * 200) + mAverageCpuTime * 0.8f;
mAverageGpuTime = mGpuTimer->getElapsedMilliseconds() * 0.2f + mAverageGpuTime * 0.8f;
#if ! defined( CINDER_GL_ES )
mParams->draw();
#endif
}
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));
}
}
void BayBridgeApp::draw()
{
gl::clear( Color( 0, 0, 0 ) );
gl::setMatrices(mCamera);
gl::disableDepthRead();
mTexSkybox->bind(0);
mBatchSkybox->draw();
mTexSkybox->unbind(0);
gl::enableDepthRead();
drawBridge(vec3(0.25f), 0.15f);
mBridge.Draw();
gl::setMatricesWindow(getWindowSize());
gl::enableAdditiveBlending();
gl::disableDepthRead();
gl::draw(mFboBlurV->getColorTexture(), vec2(0));
gl::disableAlphaBlending();
mGUI->draw();
}
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() );
}
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;
}
void ShaderToyApp::draw()
{
// Bind textures.
if( mChannel0 ) mChannel0->bind( 0 );
if( mChannel1 ) mChannel1->bind( 1 );
if( mChannel2 ) mChannel2->bind( 2 );
if( mChannel3 ) mChannel3->bind( 3 );
// Render the current shader to a frame buffer.
if( mShaderCurrent && mBufferCurrent ) {
gl::ScopedFramebuffer fbo( mBufferCurrent );
// Bind shader.
gl::ScopedGlslProg shader( mShaderCurrent );
setUniforms();
// Clear buffer and draw full screen quad (flipped).
gl::clear();
gl::drawSolidRect( Rectf( 0, (float)getWindowHeight(), (float)getWindowWidth(), 0 ) );
}
// Render the next shader to a frame buffer.
if( mShaderNext && mBufferNext ) {
gl::ScopedFramebuffer fbo( mBufferNext );
// Bind shader.
gl::ScopedGlslProg shader( mShaderNext );
setUniforms();
// Clear buffer and draw full screen quad (flipped).
gl::clear();
gl::drawSolidRect( Rectf( 0, (float)getWindowHeight(), (float)getWindowWidth(), 0 ) );
}
// Perform a cross-fade between the two shaders.
double time = getElapsedSeconds() - mTransitionTime;
double fade = math<double>::clamp( time / mTransitionDuration, 0.0, 1.0 );
if( fade <= 0.0 ) {
// Transition has not yet started. Keep drawing current buffer.
gl::draw( mBufferCurrent->getColorTexture(), getWindowBounds() );
}
else if( fade < 1.0 ) {
// Transition is in progress.
// Use a transition shader to avoid having to draw one buffer on top of another.
gl::ScopedTextureBind tex0( mBufferCurrent->getColorTexture(), 0 );
gl::ScopedTextureBind tex1( mBufferNext->getColorTexture(), 1 );
gl::ScopedGlslProg shader( mShaderTransition );
mShaderTransition->uniform( "iSrc", 0 );
mShaderTransition->uniform( "iDst", 1 );
mShaderTransition->uniform( "iFade", (float)fade );
gl::drawSolidRect( getWindowBounds() );
}
else if( mShaderNext ) {
// Transition is done. Swap shaders.
gl::draw( mBufferNext->getColorTexture(), getWindowBounds() );
mShaderCurrent = mShaderNext;
mShaderNext.reset();
mPathCurrent = mPathNext;
mPathNext.clear();
getWindow()->setTitle( std::string( "ShaderToyApp - Showing " ) + mPathCurrent.filename().string() );
}
else {
// No transition in progress.
gl::draw( mBufferCurrent->getColorTexture(), getWindowBounds() );
}
}
