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Playing with point lighting effects.

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This commit is contained in:
curt 2002-10-16 03:44:44 +00:00
parent 8166467292
commit 4ef75aa6c8
1 changed files with 8 additions and 24 deletions
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32
src/Main/main.cxx
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@ -133,10 +133,11 @@ SG_USING_STD(endl);
#include <FDM/ADA.hxx>
#include <Scenery/tileentry.hxx>
#if !defined(sgi)
// PFNGLPOINTPARAMETERFEXTPROC glPointParameterfEXT = 0;
// PFNGLPOINTPARAMETERFVEXTPROC glPointParameterfvEXT = 0;
#if ( WIN32 )
PFNGLPOINTPARAMETERFEXTPROC glPointParameterfEXT = 0;
PFNGLPOINTPARAMETERFVEXTPROC glPointParameterfvEXT = 0;
#endif
float default_attenuation[3] = {1.0, 0.0, 0.0};
//Required for using GL_extensions
void fgLoadDCS (void);
@ -718,13 +719,14 @@ void fgRenderFrame() {
// Set punch through fog density
glFogf (GL_FOG_DENSITY, fog_exp2_punch_through);
// #define FG_EXPERIMENTAL_LIGHTING
#ifdef FG_EXPERIMENTAL_LIGHTING
// Enable states for drawing points with GL_extension
if (glutExtensionSupported("GL_EXT_point_parameters")) {
glEnable(GL_POINT_SMOOTH);
float quadratic[3] = {1.0, 0.01, 0.0001};
float quadratic[3] = {1.0, 0.01, 0.00001};
// get the address of our OpenGL extensions
#if !defined(sgi)
#if defined(WIN32)
glPointParameterfEXT = (PFNGLPOINTPARAMETERFEXTPROC)
wglGetProcAddress("glPointParameterfEXT");
glPointParameterfvEXT = (PFNGLPOINTPARAMETERFVEXTPROC)
@ -733,24 +735,11 @@ void fgRenderFrame() {
// 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);
// Enable states for drawing runway lights with spherical mapping
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
//Maybe this is not the best way, but it works !!
glPolygonMode(GL_FRONT, GL_POINT);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
glPointSize(8.0);
}
glDisable( GL_LIGHTING );
// blending function for runway lights
glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
glEnable(GL_BLEND);
#endif
ssgSetNearFar( scene_nearplane, scene_farplane );
@ -778,11 +767,6 @@ void fgRenderFrame() {
#ifdef FG_EXPERIMENTAL_LIGHTING
if (glutExtensionSupported("GL_EXT_point_parameters")) {
// Disable states used for runway lighting
glPolygonMode(GL_FRONT, GL_FILL);
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
default_attenuation);
}