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added div by zero check for Fog.End/Start (from gallium-0.1)

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Brian Paul 2008-05-18 15:41:36 -06:00
parent 4b6b0fd526
commit 5976a6a75c
1 changed files with 2 additions and 1 deletions
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3
src/mesa/shader/prog_statevars.c
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@ -253,7 +253,8 @@ _mesa_fetch_state(GLcontext *ctx, const gl_state_index state[],
value[0] = ctx->Fog.Density; value[0] = ctx->Fog.Density;
value[1] = ctx->Fog.Start; value[1] = ctx->Fog.Start;
value[2] = ctx->Fog.End; value[2] = ctx->Fog.End;
value[3] = 1.0F / (ctx->Fog.End - ctx->Fog.Start); value[3] = (ctx->Fog.End == ctx->Fog.Start)
? 1.0 : 1.0F / (ctx->Fog.End - ctx->Fog.Start);
return; return;
case STATE_CLIPPLANE: case STATE_CLIPPLANE:
{ {