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/sim/rendering/horizon-effect
   toggle sun and moon resizing effect near the horizon

/sim/rendering/enhanced-lighting
   toggle enhanced runway lighting on or off

/sim/rendering/distance-attenuation
   add distance attenuation to the enhanced runway lighting
This commit is contained in:
ehofman 2003-06-17 16:59:26 +00:00
parent b082300ab1
commit 0eda5f3872
1 changed files with 44 additions and 37 deletions
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81
src/Main/main.cxx
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@ -39,6 +39,7 @@ SG_USING_STD(endl);
#include <simgear/misc/exception.hxx>
#include <simgear/ephemeris/ephemeris.hxx>
#include <simgear/route/route.hxx>
#include <simgear/screen/extensions.hxx>
#include <Environment/environment_mgr.hxx>
@ -142,7 +143,6 @@ SG_USING_STD(endl);
#include "fg_commands.hxx"
#ifdef FG_EXPERIMENTAL_POINT_LIGHTING
#ifdef WIN32
typedef void (APIENTRY * PFNGLPOINTPARAMETERFEXTPROC)(GLenum pname,
GLfloat param);
@ -160,7 +160,6 @@ SG_USING_STD(endl);
OpenGLFuncExt glPointParameterfEXT = 0;
OpenGLFuncExtv glPointParameterfvEXT = 0;
#endif
#endif
float default_attenuation[3] = {1.0, 0.0, 0.0};
//Required for using GL_extensions
@ -624,8 +623,13 @@ void fgRenderFrame() {
// within the range of the far clip plane.
// Moon distance: 384,467 kilometers
// Sun distance: 150,000,000 kilometers
double sun_eye_eff = 0.67+pow(0.5+cos(cur_light_params.sun_angle*2)/2,0.33)/3;
double moon_eye_eff = 0.67+pow(0.5+cos(cur_light_params.moon_angle*2)/2,0.33)/3;
double sun_horiz_eff, moon_horiz_eff;
if (fgGetBool("/sim/rendering/horizon-effect")) {
sun_horiz_eff = 0.67+pow(0.5+cos(cur_light_params.sun_angle*2)/2,0.33)/3;
moon_horiz_eff = 0.67+pow(0.5+cos(cur_light_params.moon_angle*2)/2,0.33)/3;
} else {
sun_horiz_eff = moon_horiz_eff = 1.0;
}
thesky->reposition( current__view->get_view_pos(),
current__view->get_zero_elev(),
current__view->get_world_up(),
@ -639,10 +643,10 @@ void fgRenderFrame() {
globals->get_time_params()->getGst(),
globals->get_ephem()->getSunRightAscension(),
globals->get_ephem()->getSunDeclination(),
50000.0 * sun_eye_eff,
50000.0 * sun_horiz_eff,
globals->get_ephem()->getMoonRightAscension(),
globals->get_ephem()->getMoonDeclination(),
40000.0 * moon_eye_eff );
40000.0 * moon_horiz_eff );
}
glEnable( GL_DEPTH_TEST );
@ -773,23 +777,28 @@ void fgRenderFrame() {
glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
ssgSetNearFar( scene_nearplane, scene_farplane );
#ifdef FG_EXPERIMENTAL_POINT_LIGHTING
// Enable states for drawing points with GL_extension
glEnable(GL_POINT_SMOOTH);
if (fgGetBool("/sim/rendering/enhanced-lighting")) {
if ( fgGetBool("/sim/rendering/distance-attenuation")
&& glutExtensionSupported("GL_EXT_point_parameters") )
{
float quadratic[3] = {1.0, 0.001, 0.0000001};
// makes the points fade as they move away
glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, quadratic);
glPointParameterfEXT(GL_POINT_SIZE_MIN_EXT, 1.0);
// Enable states for drawing points with GL_extension
glEnable(GL_POINT_SMOOTH);
if ( fgGetBool("/sim/rendering/distance-attenuation")
&& glutExtensionSupported("GL_EXT_point_parameters") )
{
// Enable states for drawing points with GL_extension
glEnable(GL_POINT_SMOOTH);
float quadratic[3] = {1.0, 0.001, 0.0000001};
// makes the points fade as they move away
glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, quadratic);
glPointParameterfEXT(GL_POINT_SIZE_MIN_EXT, 1.0);
}
glPointSize(4.0);
// blending function for runway lights
glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
}
glPointSize(4.0);
// blending function for runway lights
glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
#endif
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
@ -826,17 +835,17 @@ void fgRenderFrame() {
//_frame_count++;
#ifdef FG_EXPERIMENTAL_POINT_LIGHTING
if ( fgGetBool("/sim/rendering/distance-attenuation")
&& glutExtensionSupported("GL_EXT_point_parameters") )
{
glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
default_attenuation);
}
if (fgGetBool("/sim/rendering/enhanced-lighting")) {
if ( fgGetBool("/sim/rendering/distance-attenuation")
&& glutExtensionSupported("GL_EXT_point_parameters") )
{
glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
default_attenuation);
}
glPointSize(1.0);
glDisable(GL_POINT_SMOOTH);
#endif
glPointSize(1.0);
glDisable(GL_POINT_SMOOTH);
}
// draw ground lighting
glFogf (GL_FOG_DENSITY, ground_exp2_punch_through);
@ -1657,23 +1666,21 @@ static bool fgMainInit( int argc, char **argv ) {
glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
#endif
#ifdef FG_EXPERIMENTAL_POINT_LIGHTING
// get the address of our OpenGL extensions
if ( fgGetBool("/sim/rendering/distance-attenuation") )
{
#ifdef WIN32
glPointParameterfEXT = (PFNGLPOINTPARAMETERFEXTPROC)
wglGetProcAddress("glPointParameterfEXT");
SGLookupFunction("glPointParameterfEXT");
glPointParameterfvEXT = (PFNGLPOINTPARAMETERFVEXTPROC)
wglGetProcAddress("glPointParameterfvEXT");
SGLookupFunction("glPointParameterfvEXT");
#elif linux
glPointParameterfEXT = (OpenGLFuncExt)
glXGetProcAddressARB((GLubyte *)"glPointParameterfEXT");
SGLookupFunction((GLubyte *)"glPointParameterfEXT");
glPointParameterfvEXT = (OpenGLFuncExtv)
glXGetProcAddressARB((GLubyte *)"glPointParameterfvEXT");
SGLookupFunction((GLubyte *)"glPointParameterfvEXT");
#endif
}
#endif
// based on the requested presets, calculate the true starting
// lon, lat