// Main display loop
void AppWindow::display ()
{
float t[10]; // frame timings
// Animation
PERF_PUSH ( "animate" );
scene.DoAnimation ( frame );
PERF_POP ();
switch ( draw_mode ) {
case MODE_OPENGL:
t[0] = -1; // no shadow timing
// Basic OpenGL render.
PERF_PUSH ( "render" );
renderCamSetupGL ( scene, GLS_PROGRAM );
renderLightSetupGL ( scene, GLS_PROGRAM );
glShadeModel ( GL_FLAT );
glClearColor ( 1, 1, 1, 1 );
glClear ( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
// Use default shading program
glUseProgram ( GLS_PROGRAM );
// Render polygons
scene.SetMaterial ( -1, Vector4DF(1,1,1,1), Vector4DF(0.1,0.1,0.1,1), Vector4DF(1,1,1,1) );
renderSceneGL ( scene, GLS_PROGRAM );
// Render outlines
scene.SetOverrideMaterial ( Vector4DF(0.4,0.4,0.4,1), Vector4DF(0.1,0.1,0.1,1), Vector4DF(0,0,0,1) ); // black
glPolygonMode ( GL_FRONT_AND_BACK, GL_LINE );
glEnable ( GL_POLYGON_OFFSET_LINE );
glPolygonOffset ( 0, -0.2 );
renderSceneGL ( scene, GLS_PROGRAM );
glPolygonMode ( GL_FRONT_AND_BACK, GL_FILL );
glDisable ( GL_POLYGON_OFFSET_LINE );
glUseProgram ( 0);
t[0] = PERF_POP ();
break;
case MODE_OPTIX: case MODE_OPTIXPRIME:
#if defined(BUILD_OPTIX) || defined(BUILD_OPTIX_PRIME)
// Render shadows with either Optix or Optix Prime
PERF_PUSH ( "shadow" );
int finalshader;
#ifdef BUILD_OPTIX
if (draw_mode == MODE_OPTIX) {
finalshader = OPTIX_PROGRAM;
t[0] = renderOptix ( scene, frame, num_samples );
renderSetupOptixGL ( scene, finalshader );
}
#endif
#ifdef BUILD_OPTIX_PRIME
if (draw_mode == MODE_OPTIXPRIME) {
finalshader = OPTIXPRIME_PROGRAM;
Vector4DF timing = renderOptixPrime ( scene, getWidth(), getHeight(), num_samples );
t[0] = timing.w;
t[2] = timing.y;
renderSetupOptixPrimeGL ( scene, finalshader, getWidth(), getHeight() );
}
#endif
glFinish ();
PERF_POP ();
// Final render with OpenGL
glClearColor ( 1, 1, 1, 1 );
glClear ( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
renderCamSetupGL ( scene, finalshader ); // Send camera params to final shader
renderLightSetupGL ( scene, finalshader ); // Send light params to final shader
PERF_PUSH ( "render" );
glUseProgram ( finalshader );
scene.SetMaterial ( -1, Vector4DF(.2,.2,.2,1), Vector4DF(0.8,0.8,0.8,1), Vector4DF(1,1,1,1) );
renderSceneGL ( scene, finalshader );
// Render outlines
scene.SetOverrideMaterial ( Vector4DF(0.1,0.1,0.1,1), Vector4DF(0.4,0.4,0.4,1), Vector4DF(0,0,0,1) ); // black
glPolygonMode ( GL_FRONT_AND_BACK, GL_LINE ); // Render outlines using override colors
glEnable ( GL_POLYGON_OFFSET_LINE );
glPolygonOffset ( 0, -0.2 );
renderSceneGL ( scene, finalshader );
glPolygonMode ( GL_FRONT_AND_BACK, GL_FILL );
glDisable ( GL_POLYGON_OFFSET_LINE );
t[1] = PERF_POP ();
glUseProgram ( 0 );
#endif
break;
break;
};
//drawScene (); // Draw scene
//drawGui (); // Draw GUI (nvGUI in app_util)
//draw2D (); // Draw 2D (nv2D in app_util)
// OpenGL - Swap buffers
PERF_PUSH ( "present" );
swapBuffers();
t[3] = PERF_POP ();
// Writing timing
if ( gTimingFP != 0x0 ) {
// frame #, animate, shadow, render, present
fprintf ( gTimingFP, "%d, %f, %f, %f, %f\n", frame, t[0], t[1], t[2], t[3] );
}
frame++;
}
