render: remove alpha request option

app/node/distort/cornerpin/cornerpindistortnode.cpp

@@ -71,7 +71,6 @@ void CornerPinDistortNode::Value(const NodeValueRow &value, const NodeGlobals &g
 {
   ShaderJob job;
   job.Insert(value);
-  job.SetAlphaChannelRequired(GenerateJob::kAlphaForceOn);
   job.Insert(QStringLiteral("resolution_in"), NodeValue(NodeValue::kVec2, globals.resolution(), this));
 
   // Convert slider values to their pixel values and then convert to clip space (-1.0 ... 1.0) for overriding the

app/node/distort/crop/cropdistortnode.cpp

@@ -79,7 +79,6 @@ void CropDistortNode::Value(const NodeValueRow &value, const NodeGlobals &global
 {
   ShaderJob job;
   job.Insert(value);
-  job.SetAlphaChannelRequired(GenerateJob::kAlphaForceOn);
   job.SetWillChangeImageSize(false);
 
   if (TexturePtr texture = job.Get(kTextureInput).toTexture()) {

app/node/distort/mask/mask.cpp

@@ -80,7 +80,6 @@ void MaskDistortNode::Value(const NodeValueRow &value, const NodeGlobals &global
       feather.Insert(BlurFilterNode::kRadiusInput, NodeValue(NodeValue::kFloat, value[kFeatherInput].toDouble(), this));
       feather.SetIterations(2, BlurFilterNode::kTextureInput);
       feather.Insert(QStringLiteral("resolution_in"), NodeValue(NodeValue::kVec2, globals.resolution(), this));
-      feather.SetAlphaChannelRequired(ShaderJob::kAlphaForceOn);
 
       merge.Insert(QStringLiteral("tex_b"), NodeValue(NodeValue::kTexture, feather, this));
     } else {

app/node/distort/transform/transformdistortnode.cpp

@@ -103,10 +103,6 @@ void TransformDistortNode::Value(const NodeValueRow &value, const NodeGlobals &g
       job.Insert(QStringLiteral("ove_mvpmat"), NodeValue(NodeValue::kMatrix, real_matrix, this));
       job.SetInterpolation(QStringLiteral("ove_maintex"), static_cast<Texture::Interpolation>(value[kInterpolationInput].toInt()));
 
-      // FIXME: This should be optimized, we can use matrix math to determine if this operation will
-      //        end up with gaps in the screen that will require an alpha channel.
-      job.SetAlphaChannelRequired(GenerateJob::kAlphaForceOn);
-
       table->Push(NodeValue::kTexture, QVariant::fromValue(job), this);
 
       pushed_job = true;