/**
* Create a rendering engine to be used when the HLE modules have not yet been started.
*
* @return the initial rendering engine
*/
public static IRenderingEngine createInitialRenderingEngine() {
IRenderingEngine re = RenderingEngineLwjgl.newInstance();
if (enableDebugProxy) {
re = new DebugProxy(re);
}
return re;
}
private static IRenderingEngine createRenderingEngine(boolean enableSoftwareRendering) {
// Build the rendering pipeline, from the last entry to the first one.
IRenderingEngine re;
if (enableSoftwareRendering) {
// RenderingEngine using a complete software implementation, i.e. not using the GPU
re = new RESoftware();
} else {
// RenderingEngine performing the OpenGL calls by using the LWJGL library
re = RenderingEngineLwjgl.newInstance();
}
if (enableStatisticsProxy && DurationStatistics.collectStatistics) {
// Proxy collecting statistics for all the calls (number of calls and execution time)
re = new StatisticsProxy(re);
}
if (enableDebugProxy) {
// Proxy logging the calls at the DEBUG level
re = new DebugProxy(re);
}
if (!enableSoftwareRendering) {
if (REShader.useShaders(re)) {
// RenderingEngine using shaders
re = new REShader(re);
} else {
// RenderingEngine using the OpenGL fixed-function pipeline (i.e. without shaders)
re = new REFixedFunction(re);
}
}
// Proxy removing redundant calls.
// E.g. calls setting multiple times the same value,
// or calls with an invalid parameter (e.g. for unused shader uniforms).
// In the rendering pipeline, the State Proxy has to be called after
// the Anisotropic/Viewport filters. These are modifying some parameters
// and the State Proxy has to use the final parameter values.
re = new StateProxy(re);
// Proxy implementing a texture anisotropic filter
re = new AnisotropicFilter(re);
// Proxy implementing a viewport resizing filter
re = new ViewportFilter(re);
// Return the first entry in the pipeline
return re;
}