ofxGVTextureSerializer

GVTextureSerializer addon for OpenFrameworks 0.11/0.12

You can use this for Texture sharing as bytes, via ZeroMQ / Shared Memory etc.

Usage

ofxGVTextureSerializer serializer;
ofFbo fbo; // source
ofTexture tex; // destination
ofBuffer buffer; // serialized data

void ofApp::setup() {
    fbo.allocate(512, 512, GL_RGBA);
}

void ofApp::update() {
    fbo.begin();
    ofClear(0);
    // draw rotating triangle
    ofPushMatrix();
    ofTranslate(fbo.getWidth() / 2, fbo.getHeight() / 2);
    ofRotateDeg(ofGetElapsedTimef() * 30);
    ofDrawTriangle(0, -100, 87, 100, -87, 100);
    ofPopMatrix();
    fbo.end();

    // serialize fbo to buffer
    ofBuffer buffer = serializer.serializeTexture(fbo.getTexture());

    // deserialize buffer to tex
    tex = serializer.deserialize(buffer);
}

void ofApp::draw() {
    ofSetColor(255);
    fbo.draw(0, 0);
    tex.draw(512, 0);
}

Binary File Format (GVTexture)

0: uint32_t width
4: uint32_t height
12: uint32_t format (DXT1 = 1, DXT3 = 3, DXT5 = 5, BC7 = 7)
16: uint32_t frame bytes
20: raw frame storage (lz4 compressed)

This format is nearly same as ofxExtremeGpuVideo.

Byte size will be shrinked nearly 1/40 from RGBA8 texture.

Derivatives

• GVEncoder
• OF_TextureSharingTest