Changeset 9937 in orxonox.OLD for branches/volumetric_fog

Timestamp:

Nov 17, 2006, 12:57:53 PM (18 years ago)

Author:

hdavid

Message:

branches/volumetric_fog

File:

• branches/volumetric_fog/src/world_entities/weather_effects/volfog_effect.cc (modified) (5 diffs)

branches/volumetric_fog/src/world_entities/weather_effects/volfog_effect.cc

@@ -25 +25 @@
 #include "debug.h"
 
+//#include <GL/glext.h>
+#include <SDL.h>
+
+/*
+//////////////////////////////////
+#ifndef APIENTRY
+#define APIENTRY
+#endif
+#ifndef APIENTRYP
+#define APIENTRYP APIENTRY *
+#endif
+///////////////////////////////////
+*/
 #define GLX_GLXEXT_PROTOTYPES
 
@@ -35 +48 @@
 
 
-typedef void (APIENTRY * PFNGLFOGCOORDFEXTPROC) (GLfloat coord);    // Declare Function Prototype
-PFNGLFOGCOORDFEXTPROC glFogCoordfEXT = NULL;          // Our glFogCoordfEXT Function
+//typedef void (APIENTRY * PFNGLFOGCOORDFEXTPROC) (GLfloat coord);    // Declare Function Prototype
+//PFNGLFOGCOORDFEXTPROC glFogCoordfEXT = NULL;                        // Our glFogCoordfEXT Function
 
 
@@ -71 +84 @@
   fogColor[3] = 1.0f;
 
-  fogActivate = false;
+  //fogActivate = false;
+fogActivate = true;
 }
 
@@ -84 +98 @@
     return;
   }
+
+  // Set Up Fog 
+  //glEnable(GL_FOG);                         // Enable Fog
+  glFogi(GL_FOG_MODE, GL_LINEAR);           // Fog Fade Is Linear
+  glFogfv(GL_FOG_COLOR, fogColor);          // Set The Fog Color
+  glFogf(GL_FOG_START,  1.0f);              // Set The Fog Start
+  glFogf(GL_FOG_END,    0.0f);              // Set The Fog End
+  glHint(GL_FOG_HINT, GL_NICEST);           // Per-Pixel Fog Calculation
+
+
+  glFogCoordfEXT = (PFNGLFOGCOORDFEXTPROC) SDL_GL_GetProcAddress("glFogCoordfEXT");
+
+  glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);    // Set Fog Based On Vertice Coordinates
   
   fogActivate = true;
@@ -102 +129 @@
   if(!fogActivate)
     return;
+
+  glPushAttrib(GL_ENABLE_BIT);
+  glDisable(GL_LIGHTING);
+  glDisable(GL_BLEND);
+glEnable(GL_FOG);                         // Enable Fog
+  
+  glPushMatrix();
+  
+
+
+glBegin(GL_QUADS);                          // Back Wall
+    glFogCoordfEXT( 0.0f); glVertex3f(-2.5f,-2.5f,-15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f( 2.5f,-2.5f,-15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f( 2.5f, 2.5f,-15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f(-2.5f, 2.5f,-15.0f);
+  glEnd();
+
+  glBegin(GL_QUADS);                          // Floor
+    glFogCoordfEXT( 0.0f); glVertex3f(-2.5f,-2.5f,-15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f( 2.5f,-2.5f,-15.0f);
+    glFogCoordfEXT( 1.0f); glVertex3f( 2.5f,-2.5f, 15.0f);
+    glFogCoordfEXT( 1.0f); glVertex3f(-2.5f,-2.5f, 15.0f);
+  glEnd();
+
+  glBegin(GL_QUADS);                          // Roof
+    glFogCoordfEXT( 0.0f); glVertex3f(-2.5f, 2.5f,-15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f( 2.5f, 2.5f,-15.0f);
+    glFogCoordfEXT( 1.0f); glVertex3f( 2.5f, 2.5f, 15.0f);
+    glFogCoordfEXT( 1.0f); glVertex3f(-2.5f, 2.5f, 15.0f);
+  glEnd();
+
+  glBegin(GL_QUADS);                          // Right Wall
+    glFogCoordfEXT( 1.0f); glVertex3f( 2.5f,-2.5f, 15.0f);
+    glFogCoordfEXT( 1.0f); glVertex3f( 2.5f, 2.5f, 15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f( 2.5f, 2.5f,-15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f( 2.5f,-2.5f,-15.0f);
+  glEnd();
+
+  glBegin(GL_QUADS);                          // Left Wall
+    glFogCoordfEXT( 1.0f); glVertex3f(-2.5f,-2.5f, 15.0f);
+    glFogCoordfEXT( 1.0f); glVertex3f(-2.5f, 2.5f, 15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f(-2.5f, 2.5f,-15.0f);
+    glFogCoordfEXT( 0.0f); glVertex3f(-2.5f,-2.5f,-15.0f);
+  glEnd();
+
+  glPopMatrix();
+  glPopAttrib();
 }