Function touchFragments

OpenCSG/src/renderGoldfeather.cpp:224–261

        ChannelManagerForBatches* channelMgr;

        void touchFragments(const Batch& batch) {
            glMatrixMode(GL_PROJECTION);
            glPushMatrix();
            glLoadIdentity();
            glMatrixMode(GL_MODELVIEW);
            glPushMatrix();
            glLoadIdentity();

            GLboolean origVertexArrayState = glIsEnabled(GL_VERTEX_ARRAY);
            if (!origVertexArrayState) {
                glEnableClientState(GL_VERTEX_ARRAY);
            }

            for (Batch::const_iterator j = batch.begin(); j != batch.end(); ++j) {

                float fminx, fminy, fminz, fmaxx, fmaxy, fmaxz;
                (*j)->getBoundingBox(fminx, fminy, fminz, fmaxx, fmaxy, fmaxz);

                const GLfloat v[8] = {
                    fminx, fminy,
                    fmaxx, fminy,
                    fminx, fmaxy,
                    fmaxx, fmaxy
                };

                glVertexPointer(2, GL_FLOAT, 0, v);
                glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
            }

            if (!origVertexArrayState) {
                glDisableClientState(GL_VERTEX_ARRAY);
            }

            glMatrixMode(GL_PROJECTION);
            glPopMatrix();
            glMatrixMode(GL_MODELVIEW);
            glPopMatrix();
        }

        GLenum getParityDepthFunc()
        {