silence compiler warnings (last batch for src)

10 files changed, 78 insertions, 62 deletions

diff --git a/src/mesa/swrast/s_aalinetemp.h b/src/mesa/swrast/s_aalinetemp.h
index 5808245948a..2d8f8492e0e 100644
--- a/src/mesa/swrast/s_aalinetemp.h
+++ b/src/mesa/swrast/s_aalinetemp.h
@@ -1,4 +1,4 @@
-/* $Id: s_aalinetemp.h,v 1.13 2001/09/18 23:06:14 kschultz Exp $ */
+/* $Id: s_aalinetemp.h,v 1.14 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -212,10 +212,10 @@ NAME(line)(GLcontext *ctx, const SWvertex *v0, const SWvertex *v1)
 #ifdef DO_INDEX
    if (ctx->Light.ShadeModel == GL_SMOOTH) {
       compute_plane(line.x0, line.y0, line.x1, line.y1,
-                    v0->index, v1->index, line.iPlane);
+                    (GLfloat) v0->index, (GLfloat) v1->index, line.iPlane);
    }
    else {
-      constant_plane(v1->index, line.iPlane);
+      constant_plane((GLfloat) v1->index, line.iPlane);
    }
 #endif
 #ifdef DO_TEX
diff --git a/src/mesa/swrast/s_aatriangle.c b/src/mesa/swrast/s_aatriangle.c
index d5350ff8531..83f145ca9fd 100644
--- a/src/mesa/swrast/s_aatriangle.c
+++ b/src/mesa/swrast/s_aatriangle.c
@@ -1,4 +1,4 @@
-/* $Id: s_aatriangle.c,v 1.18 2001/05/29 15:23:15 brianp Exp $ */
+/* $Id: s_aatriangle.c,v 1.19 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -347,7 +347,7 @@ compute_lambda(const GLfloat sPlane[4], const GLfloat tPlane[4],
    if (rho2 == 0.0F)
       return 0.0;
    else
-      return log(rho2) * 1.442695 * 0.5;       /* 1.442695 = 1/log(2) */
+      return (GLfloat) (log(rho2) * 1.442695 * 0.5); /* 1.442695 = 1/log(2) */
 }
 
 
diff --git a/src/mesa/swrast/s_aatritemp.h b/src/mesa/swrast/s_aatritemp.h
index 6cb45783dad..69f102858f6 100644
--- a/src/mesa/swrast/s_aatritemp.h
+++ b/src/mesa/swrast/s_aatritemp.h
@@ -1,4 +1,4 @@
-/* $Id: s_aatritemp.h,v 1.20 2001/07/13 20:12:44 brianp Exp $ */
+/* $Id: s_aatritemp.h,v 1.21 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -184,11 +184,11 @@
 #endif
 #ifdef DO_INDEX
    if (ctx->Light.ShadeModel == GL_SMOOTH) {
-      compute_plane(p0, p1, p2, v0->index,
-                    v1->index, v2->index, iPlane);
+      compute_plane(p0, p1, p2, (GLfloat) v0->index,
+                    (GLfloat) v1->index, (GLfloat) v2->index, iPlane);
    }
    else {
-      constant_plane(v2->index, iPlane);
+      constant_plane((GLfloat) v2->index, iPlane);
    }
 #endif
 #ifdef DO_SPEC
diff --git a/src/mesa/swrast/s_accum.c b/src/mesa/swrast/s_accum.c
index 6d3e2feb6ab..5b7936b210a 100644
--- a/src/mesa/swrast/s_accum.c
+++ b/src/mesa/swrast/s_accum.c
@@ -1,4 +1,4 @@
-/* $Id: s_accum.c,v 1.12 2001/07/13 20:07:37 brianp Exp $ */
+/* $Id: s_accum.c,v 1.13 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -108,7 +108,7 @@ static void rescale_accum( GLcontext *ctx )
 {
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
    const GLuint n = ctx->DrawBuffer->Width * ctx->DrawBuffer->Height * 4;
-   const GLfloat s = swrast->_IntegerAccumScaler * (32767.0 / CHAN_MAXF);
+   const GLfloat s = swrast->_IntegerAccumScaler * (32767.0F / CHAN_MAXF);
    GLaccum *accum = ctx->DrawBuffer->Accum;
    GLuint i;
 
diff --git a/src/mesa/swrast/s_feedback.c b/src/mesa/swrast/s_feedback.c
index 2b42ce210eb..f25b179a2c5 100644
--- a/src/mesa/swrast/s_feedback.c
+++ b/src/mesa/swrast/s_feedback.c
@@ -1,4 +1,4 @@
-/* $Id: s_feedback.c,v 1.8 2001/06/12 22:06:53 brianp Exp $ */
+/* $Id: s_feedback.c,v 1.9 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -58,7 +58,7 @@ static void feedback_vertex( GLcontext *ctx,
    win[0] = v->win[0];
    win[1] = v->win[1];
    win[2] = v->win[2] / ctx->DepthMaxF;
-   win[3] = 1.0 / v->win[3];
+   win[3] = 1.0F / v->win[3];
 
    color[0] = CHAN_TO_FLOAT(pv->color[0]);
    color[1] = CHAN_TO_FLOAT(pv->color[1]);
diff --git a/src/mesa/swrast/s_fog.c b/src/mesa/swrast/s_fog.c
index 74431d89b9b..6280391cc6e 100644
--- a/src/mesa/swrast/s_fog.c
+++ b/src/mesa/swrast/s_fog.c
@@ -1,4 +1,4 @@
-/* $Id: s_fog.c,v 1.13 2001/06/18 23:55:18 brianp Exp $ */
+/* $Id: s_fog.c,v 1.14 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -56,11 +56,11 @@ _mesa_z_to_fogfactor(GLcontext *ctx, GLfloat z)
       return CLAMP(f, 0.0F, 1.0F);
    case GL_EXP:
       d = ctx->Fog.Density;
-      f = exp(-d * z);
+      f = (GLfloat) exp(-d * z);
       return f;
    case GL_EXP2:
       d = ctx->Fog.Density;
-      f = exp(-(d * d * z * z));
+      f = (GLfloat) exp(-(d * d * z * z));
       return f;
    default:
       _mesa_problem(ctx, "Bad fog mode in make_fog_coord");
@@ -92,10 +92,10 @@ _mesa_fog_rgba_pixels( const GLcontext *ctx,
 
    for (i = 0; i < n; i++) {
       const GLfloat f = fog[i];
-      const GLfloat g = 1.0 - f;
-      rgba[i][RCOMP] = f * rgba[i][RCOMP] + g * rFog;
-      rgba[i][GCOMP] = f * rgba[i][GCOMP] + g * gFog;
-      rgba[i][BCOMP] = f * rgba[i][BCOMP] + g * bFog;
+      const GLfloat g = 1.0F - f;
+      rgba[i][RCOMP] = (GLchan) (f * rgba[i][RCOMP] + g * rFog);
+      rgba[i][GCOMP] = (GLchan) (f * rgba[i][GCOMP] + g * gFog);
+      rgba[i][BCOMP] = (GLchan) (f * rgba[i][BCOMP] + g * bFog);
    }
 }
 
@@ -116,7 +116,7 @@ _mesa_fog_ci_pixels( const GLcontext *ctx,
    GLuint i;
 
    for (i = 0; i < n; i++) {
-      const GLfloat f = CLAMP(fog[i], 0.0, 1.0);
+      const GLfloat f = CLAMP(fog[i], 0.0F, 1.0F);
       index[i] = (GLuint) ((GLfloat) index[i] + (1.0F - f) * idx);
    }
 }
@@ -210,7 +210,7 @@ compute_fog_factors_from_z( const GLcontext *ctx,
                GLfloat eyez = (ndcz - p14) / p10;
                if (eyez < 0.0)
                   eyez = -eyez;
-               fogFact[i] = exp( -ctx->Fog.Density * eyez );
+               fogFact[i] = (GLfloat) exp( -ctx->Fog.Density * eyez );
             }
          }
          else {
@@ -220,7 +220,7 @@ compute_fog_factors_from_z( const GLcontext *ctx,
                GLfloat eyez = p14 / (ndcz + p10);
                if (eyez < 0.0)
                   eyez = -eyez;
-               fogFact[i] = exp( -ctx->Fog.Density * eyez );
+               fogFact[i] = (GLfloat) exp( -ctx->Fog.Density * eyez );
             }
          }
 	 break;
@@ -237,7 +237,7 @@ compute_fog_factors_from_z( const GLcontext *ctx,
                   if (tmp < FLT_MIN_10_EXP)
                      tmp = FLT_MIN_10_EXP;
 #endif
-                  fogFact[i] = exp( tmp );
+                  fogFact[i] = (GLfloat) exp( tmp );
                }
             }
             else {
@@ -251,7 +251,7 @@ compute_fog_factors_from_z( const GLcontext *ctx,
                   if (tmp < FLT_MIN_10_EXP)
                      tmp = FLT_MIN_10_EXP;
 #endif
-                  fogFact[i] = exp( tmp );
+                  fogFact[i] = (GLfloat) exp( tmp );
                }
             }
          }
diff --git a/src/mesa/swrast/s_pointtemp.h b/src/mesa/swrast/s_pointtemp.h
index 1125d34ad68..482f42b8eb6 100644
--- a/src/mesa/swrast/s_pointtemp.h
+++ b/src/mesa/swrast/s_pointtemp.h
@@ -1,4 +1,4 @@
-/* $Id: s_pointtemp.h,v 1.9 2001/07/19 16:12:03 brianp Exp $ */
+/* $Id: s_pointtemp.h,v 1.10 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -122,7 +122,7 @@ NAME ( GLcontext *ctx, const SWvertex *vert )
 #if FLAGS & SPRITE
    {
       SWcontext *swctx = SWRAST_CONTEXT(ctx);
-      const GLfloat radius = 0.5 * vert->pointSize;  /* XXX threshold, alpha */
+      const GLfloat radius = 0.5F * vert->pointSize; /* XXX threshold, alpha */
       SWvertex v0, v1, v2, v3;
       GLuint unit;
 
@@ -182,7 +182,7 @@ NAME ( GLcontext *ctx, const SWvertex *vert )
 #if FLAGS & SMOOTH
       const GLfloat rmin = radius - 0.7071F;  /* 0.7071 = sqrt(2)/2 */
       const GLfloat rmax = radius + 0.7071F;
-      const GLfloat rmin2 = MAX2(0.0, rmin * rmin);
+      const GLfloat rmin2 = MAX2(0.0F, rmin * rmin);
       const GLfloat rmax2 = rmax * rmax;
       const GLfloat cscale = 1.0F / (rmax2 - rmin2);
       const GLint xmin = (GLint) (vert->win[0] - radius);
diff --git a/src/mesa/swrast/s_texture.c b/src/mesa/swrast/s_texture.c
index 9c3e2c5b5f6..39d9a9c6129 100644
--- a/src/mesa/swrast/s_texture.c
+++ b/src/mesa/swrast/s_texture.c
@@ -1,4 +1,4 @@
-/* $Id: s_texture.c,v 1.38 2001/08/14 14:08:44 brianp Exp $ */
+/* $Id: s_texture.c,v 1.39 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -68,7 +68,7 @@
       if (S <= 0.0F)							\
          U = 0.0F;							\
       else if (S >= 1.0F)						\
-         U = SIZE;							\
+         U = (GLfloat) SIZE;						\
       else								\
          U = S * SIZE;							\
       U -= 0.5F;							\
@@ -97,7 +97,7 @@
       if (S <= 0.0F)							\
          U = 0.0F;							\
       else if (S >= 1.0F)						\
-         U = SIZE;							\
+         U = (GLfloat) SIZE;						\
       else								\
          U = S * SIZE;							\
       U -= 0.5F;							\
diff --git a/src/mesa/swrast/s_triangle.c b/src/mesa/swrast/s_triangle.c
index c1aa1facf14..cc447ac5707 100644
--- a/src/mesa/swrast/s_triangle.c
+++ b/src/mesa/swrast/s_triangle.c
@@ -1,4 +1,4 @@
-/* $Id: s_triangle.c,v 1.37 2001/09/13 22:12:54 brianp Exp $ */
+/* $Id: s_triangle.c,v 1.38 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -708,8 +708,8 @@ fast_persp_span(GLcontext *ctx, struct triangle_span *span,
 	for (i = 0; i < span->count; i++) {				\
            GLdouble invQ = tex_coord[2] ?				\
                                  (1.0 / tex_coord[2]) : 1.0;            \
-           GLfloat s_tmp = tex_coord[0] * invQ;				\
-           GLfloat t_tmp = tex_coord[1] * invQ;				\
+           GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ);		\
+           GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ);		\
            GLint s = IFLOOR(s_tmp) & info->smask;	        	\
            GLint t = IFLOOR(t_tmp) & info->tmask;	        	\
            GLint pos = (t << info->twidth_log2) + s;			\
@@ -733,8 +733,8 @@ fast_persp_span(GLcontext *ctx, struct triangle_span *span,
 	for (i = 0; i < span->count; i++) {				\
            GLdouble invQ = tex_coord[2] ?				\
                                  (1.0 / tex_coord[2]) : 1.0;            \
-           GLfloat s_tmp = tex_coord[0] * invQ;				\
-           GLfloat t_tmp = tex_coord[1] * invQ;				\
+           GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ);		\
+           GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ);		\
            GLfixed s_fix = FloatToFixed(s_tmp) - FIXED_HALF;		\
            GLfixed t_fix = FloatToFixed(t_tmp) - FIXED_HALF;        	\
            GLint s = FixedToInt(FixedFloor(s_fix)) & info->smask;	\
@@ -1144,11 +1144,12 @@ rasterize_span(GLcontext *ctx, const struct triangle_span *span)
                   GLfloat q = span->tex[u][3];
                   GLuint i;
                   for (i = 0; i < span->count; i++) {
-                     const GLfloat invQ = (q == 0.0F) ? 1.0 : (1.0F / q);
+                     const GLfloat invQ = (q == 0.0F) ? 1.0F : (1.0F / q);
                      msTex[u][i] = s * invQ;
                      mtTex[u][i] = t * invQ;
                      mrTex[u][i] = r * invQ;
-                     mLambda[u][i] = log(span->rho[u] * invQ * invQ) * 1.442695F * 0.5F;
+                     mLambda[u][i] = (GLfloat) 
+			 (log(span->rho[u] * invQ * invQ) * 1.442695F * 0.5F);
                      s += span->texStep[u][0];
                      t += span->texStep[u][1];
                      r += span->texStep[u][2];
@@ -1168,7 +1169,7 @@ rasterize_span(GLcontext *ctx, const struct triangle_span *span)
                   GLfloat q = span->tex[u][3];
                   GLuint i;
                   for (i = 0; i < span->count; i++) {
-                     const GLfloat invQ = (q == 0.0F) ? 1.0 : (1.0F / q);
+                     const GLfloat invQ = (q == 0.0F) ? 1.0F : (1.0F / q);
                      msTex[u][i] = s * invQ;
                      mtTex[u][i] = t * invQ;
                      mrTex[u][i] = r * invQ;
@@ -1191,11 +1192,12 @@ rasterize_span(GLcontext *ctx, const struct triangle_span *span)
             GLfloat q = span->tex[0][3];
             GLuint i;
             for (i = 0; i < span->count; i++) {
-               const GLfloat invQ = (q == 0.0F) ? 1.0 : (1.0F / q);
+               const GLfloat invQ = (q == 0.0F) ? 1.0F : (1.0F / q);
                sTex[i] = s * invQ;
                tTex[i] = t * invQ;
                rTex[i] = r * invQ;
-               lambda[i] = log(span->rho[0] * invQ * invQ) * 1.442695F * 0.5F;
+               lambda[i] = (GLfloat)
+		   (log(span->rho[0] * invQ * invQ) * 1.442695F * 0.5F);
                s += span->texStep[0][0];
                t += span->texStep[0][1];
                r += span->texStep[0][2];
@@ -1210,7 +1212,7 @@ rasterize_span(GLcontext *ctx, const struct triangle_span *span)
             GLfloat q = span->tex[0][3];
             GLuint i;
             for (i = 0; i < span->count; i++) {
-               const GLfloat invQ = (q == 0.0F) ? 1.0 : (1.0F / q);
+               const GLfloat invQ = (q == 0.0F) ? 1.0F : (1.0F / q);
                sTex[i] = s * invQ;
                tTex[i] = t * invQ;
                rTex[i] = r * invQ;
@@ -1351,9 +1353,9 @@ static void general_textured_triangle( GLcontext *ctx,
       span.green += span.greenStep;					\
       span.blue += span.blueStep;					\
       span.alpha += span.alphaStep;					\
-      sSpan[i] = span.tex[0][0] * invQ;					\
-      tSpan[i] = span.tex[0][1] * invQ;					\
-      uSpan[i] = span.tex[0][2] * invQ;					\
+      sSpan[i] = (GLfloat) (span.tex[0][0] * invQ);			\
+      tSpan[i] = (GLfloat) (span.tex[0][1] * invQ);			\
+      uSpan[i] = (GLfloat) (span.tex[0][2] * invQ);			\
       span.tex[0][0] += span.texStep[0][0];				\
       span.tex[0][1] += span.texStep[0][1];				\
       span.tex[0][2] += span.texStep[0][2];				\
diff --git a/src/mesa/swrast/s_tritemp.h b/src/mesa/swrast/s_tritemp.h
index be69d7577d5..5c9d79d5f1f 100644
--- a/src/mesa/swrast/s_tritemp.h
+++ b/src/mesa/swrast/s_tritemp.h
@@ -1,4 +1,4 @@
-/* $Id: s_tritemp.h,v 1.26 2001/09/13 22:12:54 brianp Exp $ */
+/* $Id: s_tritemp.h,v 1.27 2001/09/19 20:30:44 kschultz Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -375,24 +375,32 @@
 #  ifdef INTERP_ALPHA
          GLfloat eMaj_da, eBot_da;
 #  endif
-         eMaj_dr = (GLint) vMax->color[RCOMP] - (GLint) vMin->color[RCOMP];
-         eBot_dr = (GLint) vMid->color[RCOMP] - (GLint) vMin->color[RCOMP];
+         eMaj_dr = (GLfloat) ((GLint) vMax->color[RCOMP] - 
+			      (GLint) vMin->color[RCOMP]);
+         eBot_dr = (GLfloat) ((GLint) vMid->color[RCOMP] - 
+			      (GLint) vMin->color[RCOMP]);
          drdx = oneOverArea * (eMaj_dr * eBot.dy - eMaj.dy * eBot_dr);
          span.redStep = SignedFloatToFixed(drdx);
          drdy = oneOverArea * (eMaj.dx * eBot_dr - eMaj_dr * eBot.dx);
-         eMaj_dg = (GLint) vMax->color[GCOMP] - (GLint) vMin->color[GCOMP];
-         eBot_dg = (GLint) vMid->color[GCOMP] - (GLint) vMin->color[GCOMP];
+         eMaj_dg = (GLfloat) ((GLint) vMax->color[GCOMP] - 
+			      (GLint) vMin->color[GCOMP]);
+         eBot_dg = (GLfloat) ((GLint) vMid->color[GCOMP] - 
+			      (GLint) vMin->color[GCOMP]);
          dgdx = oneOverArea * (eMaj_dg * eBot.dy - eMaj.dy * eBot_dg);
          span.greenStep = SignedFloatToFixed(dgdx);
          dgdy = oneOverArea * (eMaj.dx * eBot_dg - eMaj_dg * eBot.dx);
-         eMaj_db = (GLint) vMax->color[BCOMP] - (GLint) vMin->color[BCOMP];
-         eBot_db = (GLint) vMid->color[BCOMP] - (GLint) vMin->color[BCOMP];
+         eMaj_db = (GLfloat) ((GLint) vMax->color[BCOMP] - 
+			      (GLint) vMin->color[BCOMP]);
+         eBot_db = (GLfloat) ((GLint) vMid->color[BCOMP] - 
+			      (GLint) vMin->color[BCOMP]);
          dbdx = oneOverArea * (eMaj_db * eBot.dy - eMaj.dy * eBot_db);
          span.blueStep = SignedFloatToFixed(dbdx);
          dbdy = oneOverArea * (eMaj.dx * eBot_db - eMaj_db * eBot.dx);
 #  ifdef INTERP_ALPHA
-         eMaj_da = (GLint) vMax->color[ACOMP] - (GLint) vMin->color[ACOMP];
-         eBot_da = (GLint) vMid->color[ACOMP] - (GLint) vMin->color[ACOMP];
+         eMaj_da = (GLfloat) ((GLint) vMax->color[ACOMP] - 
+			      (GLint) vMin->color[ACOMP]);
+         eBot_da = (GLfloat) ((GLint) vMid->color[ACOMP] - 
+			      (GLint) vMin->color[ACOMP]);
          dadx = oneOverArea * (eMaj_da * eBot.dy - eMaj.dy * eBot_da);
          span.alphaStep = SignedFloatToFixed(dadx);
          dady = oneOverArea * (eMaj.dx * eBot_da - eMaj_da * eBot.dx);
@@ -454,18 +462,24 @@
          GLfloat eMaj_dsr, eBot_dsr;
          GLfloat eMaj_dsg, eBot_dsg;
          GLfloat eMaj_dsb, eBot_dsb;
-         eMaj_dsr = (GLint) vMax->specular[RCOMP] - (GLint) vMin->specular[RCOMP];
-         eBot_dsr = (GLint) vMid->specular[RCOMP] - (GLint) vMin->specular[RCOMP];
+         eMaj_dsr = (GLfloat) ((GLint) vMax->specular[RCOMP] - 
+			       (GLint) vMin->specular[RCOMP]);
+         eBot_dsr = (GLfloat) ((GLint) vMid->specular[RCOMP] - 
+			       (GLint) vMin->specular[RCOMP]);
          dsrdx = oneOverArea * (eMaj_dsr * eBot.dy - eMaj.dy * eBot_dsr);
          span.specRedStep = SignedFloatToFixed(dsrdx);
          dsrdy = oneOverArea * (eMaj.dx * eBot_dsr - eMaj_dsr * eBot.dx);
-         eMaj_dsg = (GLint) vMax->specular[GCOMP] - (GLint) vMin->specular[GCOMP];
-         eBot_dsg = (GLint) vMid->specular[GCOMP] - (GLint) vMin->specular[GCOMP];
+         eMaj_dsg = (GLfloat) ((GLint) vMax->specular[GCOMP] - 
+			       (GLint) vMin->specular[GCOMP]);
+         eBot_dsg = (GLfloat) ((GLint) vMid->specular[GCOMP] - 
+			       (GLint) vMin->specular[GCOMP]);
          dsgdx = oneOverArea * (eMaj_dsg * eBot.dy - eMaj.dy * eBot_dsg);
          span.specGreenStep = SignedFloatToFixed(dsgdx);
          dsgdy = oneOverArea * (eMaj.dx * eBot_dsg - eMaj_dsg * eBot.dx);
-         eMaj_dsb = (GLint) vMax->specular[BCOMP] - (GLint) vMin->specular[BCOMP];
-         eBot_dsb = (GLint) vMid->specular[BCOMP] - (GLint) vMin->specular[BCOMP];
+         eMaj_dsb = (GLfloat) ((GLint) vMax->specular[BCOMP] - 
+			       (GLint) vMin->specular[BCOMP]);
+         eBot_dsb = (GLfloat) ((GLint) vMid->specular[BCOMP] - 
+			       (GLint) vMin->specular[BCOMP]);
          dsbdx = oneOverArea * (eMaj_dsb * eBot.dy - eMaj.dy * eBot_dsb);
          span.specBlueStep = SignedFloatToFixed(dsbdx);
          dsbdy = oneOverArea * (eMaj.dx * eBot_dsb - eMaj_dsb * eBot.dx);
@@ -511,8 +525,8 @@
       span.activeMask |= SPAN_INDEX;
       if (ctx->Light.ShadeModel == GL_SMOOTH) {
          GLfloat eMaj_di, eBot_di;
-         eMaj_di = (GLint) vMax->index - (GLint) vMin->index;
-         eBot_di = (GLint) vMid->index - (GLint) vMin->index;
+         eMaj_di = (GLfloat) ((GLint) vMax->index - (GLint) vMin->index);
+         eBot_di = (GLfloat) ((GLint) vMid->index - (GLint) vMin->index);
          didx = oneOverArea * (eMaj_di * eBot.dy - eMaj.dy * eBot_di);
          span.indexStep = SignedFloatToFixed(didx);
          didy = oneOverArea * (eMaj.dx * eBot_di - eMaj_di * eBot.dx);