mesa: refactor: move glReadPixels code into new readpix.c file

[mesa.git] / src / mesa / main / light.c

diff --git a/src/mesa/main/light.c b/src/mesa/main/light.c
index 92d8a0ae0d4c7dfca11dfb2bd4b35062b593c20b..f37d1f216fc94796212de3ea1d1f2375903727ca 100644 (file)
--- a/src/mesa/main/light.c
+++ b/src/mesa/main/light.c
@@ -1,8 +1,8 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5.3
+ * Version:  7.0
  *
- * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -1117,6 +1117,13 @@ compute_light_positions( GLcontext *ctx )
         }
         light->_VP_inf_spot_attenuation = 1.0;
       }
+      else {
+         /* positional light w/ homogeneous coordinate, divide by W */
+         GLfloat wInv = (GLfloat)1.0 / light->_Position[3];
+         light->_Position[0] *= wInv;
+         light->_Position[1] *= wInv;
+         light->_Position[2] *= wInv;
+      }
 
       if (light->_Flags & LIGHT_SPOT) {
         if (ctx->_NeedEyeCoords) {
@@ -1350,6 +1357,7 @@ _mesa_init_lighting( GLcontext *ctx )
    /* Miscellaneous */
    ctx->Light._NeedEyeCoords = GL_FALSE;
    ctx->_NeedEyeCoords = GL_FALSE;
+   ctx->_ForceEyeCoords = GL_FALSE;
    ctx->_ModelViewInvScale = 1.0;
 }