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@@ -27,6 +27,13 @@ class Dce {
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public function new() {
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}
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+ inline function debug( msg : String, ?pos : haxe.PosInfos ) {
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+ #if shader_debug_dump
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+ if( Cache.TRACE )
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+ haxe.Log.trace(msg, pos);
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+ #end
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+ }
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+
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public function dce( vertex : ShaderData, fragment : ShaderData ) {
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// collect vars dependencies
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used = new Map();
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@@ -55,6 +62,8 @@ class Dce {
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var outExprs = [];
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while( true ) {
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+ debug("DCE LOOP");
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+
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for( v in used )
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if( v.keep )
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markRec(v);
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@@ -105,6 +114,7 @@ class Dce {
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function markRec( v : VarDeps ) {
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if( v.used ) return;
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+ debug(v.v.name+" is used");
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v.used = true;
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for( d in v.deps )
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markRec(d);
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@@ -116,11 +126,13 @@ class Dce {
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if( w == null ) {
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// mark for conditional
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if( !vd.keep ) {
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+ debug("Force keep "+vd.v.name);
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vd.keep = true;
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markAsKeep = true;
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}
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continue;
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}
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+ debug(w.v.name+" depends on "+vd.v.name);
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w.deps.set(v.id, vd);
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}
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}
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@@ -136,6 +148,10 @@ class Dce {
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writeTo.pop();
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if( isAffected.indexOf(v) < 0 )
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isAffected.push(v);
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+ case TBlock(el):
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+ var noWrite = [];
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+ for( i in 0...el.length )
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+ check(el[i],i < el.length - 1 ? noWrite : writeTo, isAffected);
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case TVarDecl(v, init) if( init != null ):
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writeTo.push(get(v));
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check(init, writeTo, isAffected);
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ncannasse