radeon: share common fog code between radeon and r200

Signed-off-by: Alex Deucher <[email protected]>

1 files changed, 0 insertions, 83 deletions

diff --git a/src/mesa/drivers/dri/radeon/radeon_tcl.c b/src/mesa/drivers/dri/radeon/radeon_tcl.c
index 06cb8075da1..dee25ae3602 100644
--- a/src/mesa/drivers/dri/radeon/radeon_tcl.c
+++ b/src/mesa/drivers/dri/radeon/radeon_tcl.c
@@ -276,89 +276,6 @@ void radeonTclPrimitive( struct gl_context *ctx,
    }
 }
 
-/**********************************************************************/
-/*             Fog blend factor computation for hw tcl                */
-/*             same calculation used as in t_vb_fog.c                 */
-/**********************************************************************/
-
-#define FOG_EXP_TABLE_SIZE 256
-#define FOG_MAX (10.0)
-#define EXP_FOG_MAX .0006595
-#define FOG_INCR (FOG_MAX/FOG_EXP_TABLE_SIZE)
-static GLfloat exp_table[FOG_EXP_TABLE_SIZE];
-
-#if 1
-#define NEG_EXP( result, narg )						\
-do {									\
-   GLfloat f = (GLfloat) (narg * (1.0/FOG_INCR));			\
-   GLint k = (GLint) f;							\
-   if (k > FOG_EXP_TABLE_SIZE-2) 					\
-      result = (GLfloat) EXP_FOG_MAX;					\
-   else									\
-      result = exp_table[k] + (f-k)*(exp_table[k+1]-exp_table[k]);	\
-} while (0)
-#else
-#define NEG_EXP( result, narg )					\
-do {								\
-   result = exp(-narg);						\
-} while (0)
-#endif
-
-
-/**
- * Initialize the exp_table[] lookup table for approximating exp().
- */
-void
-radeonInitStaticFogData( void )
-{
-   GLfloat f = 0.0F;
-   GLint i = 0;
-   for ( ; i < FOG_EXP_TABLE_SIZE ; i++, f += FOG_INCR) {
-      exp_table[i] = (GLfloat) exp(-f);
-   }
-}
-
-
-/**
- * Compute per-vertex fog blend factors from fog coordinates by
- * evaluating the GL_LINEAR, GL_EXP or GL_EXP2 fog function.
- * Fog coordinates are distances from the eye (typically between the
- * near and far clip plane distances).
- * Note the fog (eye Z) coords may be negative so we use ABS(z) below.
- * Fog blend factors are in the range [0,1].
- */
-float
-radeonComputeFogBlendFactor( struct gl_context *ctx, GLfloat fogcoord )
-{
-   GLfloat end  = ctx->Fog.End;
-   GLfloat d, temp;
-   const GLfloat z = FABSF(fogcoord);
-
-   switch (ctx->Fog.Mode) {
-   case GL_LINEAR:
-      if (ctx->Fog.Start == ctx->Fog.End)
-         d = 1.0F;
-      else
-         d = 1.0F / (ctx->Fog.End - ctx->Fog.Start);
-      temp = (end - z) * d;
-      return CLAMP(temp, 0.0F, 1.0F);
-      break;
-   case GL_EXP:
-      d = ctx->Fog.Density;
-      NEG_EXP( temp, d * z );
-      return temp;
-      break;
-   case GL_EXP2:
-      d = ctx->Fog.Density*ctx->Fog.Density;
-      NEG_EXP( temp, d * z * z );
-      return temp;
-      break;
-   default:
-      _mesa_problem(ctx, "Bad fog mode in make_fog_coord");
-      return 0;
-   }
-}
-
 /**
  * Predict total emit size for next rendering operation so there is no flush in middle of rendering
  * Prediction has to aim towards the best possible value that is worse than worst case scenario