itsmattkc
74ad4110be
Making an exception for the transform node, we use a slightly heavier hash to save more rendering time later. Fixes #1560 Addresses some of #1360
140 lines
4.0 KiB
C++
140 lines
4.0 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2021 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "merge.h"
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namespace olive {
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const QString MergeNode::kBaseIn = QStringLiteral("base_in");
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const QString MergeNode::kBlendIn = QStringLiteral("blend_in");
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MergeNode::MergeNode()
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{
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AddInput(kBaseIn, NodeValue::kTexture, InputFlags(kInputFlagNotKeyframable));
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AddInput(kBlendIn, NodeValue::kTexture, InputFlags(kInputFlagNotKeyframable));
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}
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Node *MergeNode::copy() const
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{
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return new MergeNode();
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}
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QString MergeNode::Name() const
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{
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return tr("Merge");
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}
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QString MergeNode::id() const
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{
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return QStringLiteral("org.olivevideoeditor.Olive.merge");
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}
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QVector<Node::CategoryID> MergeNode::Category() const
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{
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return {kCategoryMath};
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}
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QString MergeNode::Description() const
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{
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return tr("Merge two textures together.");
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}
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void MergeNode::Retranslate()
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{
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SetInputName(kBaseIn, tr("Base"));
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SetInputName(kBlendIn, tr("Blend"));
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}
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ShaderCode MergeNode::GetShaderCode(const QString &shader_id) const
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{
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Q_UNUSED(shader_id)
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return ShaderCode(FileFunctions::ReadFileAsString(":/shaders/alphaover.frag"));
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}
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NodeValueTable MergeNode::Value(const QString &output, NodeValueDatabase &value) const
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{
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Q_UNUSED(output)
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ShaderJob job;
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job.InsertValue(this, kBaseIn, value);
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job.InsertValue(this, kBlendIn, value);
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NodeValueTable table = value.Merge();
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TexturePtr base_tex = job.GetValue(kBaseIn).data().value<TexturePtr>();
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TexturePtr blend_tex = job.GetValue(kBlendIn).data().value<TexturePtr>();
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if (base_tex || blend_tex) {
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if (!base_tex || (blend_tex && blend_tex->channel_count() < VideoParams::kRGBAChannelCount)) {
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// We only have a blend texture or the blend texture is RGB only, no need to alpha over
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table.Push(job.GetValue(kBlendIn));
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} else if (!blend_tex) {
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// We only have a base texture, no need to alpha over
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table.Push(job.GetValue(kBaseIn));
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} else {
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// We have both textures, push the job
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table.Push(NodeValue::kShaderJob, QVariant::fromValue(job), this);
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}
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}
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return table;
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}
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void MergeNode::Hash(const QString &output, QCryptographicHash &hash, const rational &time, const VideoParams &video_params) const
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{
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// We do some hash optimization here. If only one of the inputs is connected, this node
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// functions as a passthrough so there's no alteration to the hash. The same is true if the
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// connected node happens to return nothing (a gap for instance). Therefore we only add our
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// fingerprint if the base AND the blend change the hash. Otherwise, we assume it's a passthrough.
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Q_UNUSED(output)
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QByteArray current_result = hash.result();
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bool base_changed_hash = false;
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bool blend_changed_hash = false;
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if (IsInputConnected(kBaseIn)) {
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NodeOutput base_output = GetConnectedOutput(kBaseIn);
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base_output.node()->Hash(base_output.output(), hash, time, video_params);
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QByteArray post_base_hash = hash.result();
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base_changed_hash = (post_base_hash != current_result);
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current_result = post_base_hash;
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}
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if(IsInputConnected(kBlendIn)) {
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NodeOutput blend_output = GetConnectedOutput(kBlendIn);
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blend_output.node()->Hash(blend_output.output(), hash, time, video_params);
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blend_changed_hash = (hash.result() != current_result);
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}
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if (base_changed_hash && blend_changed_hash) {
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// Something changed, so we'll add our fingerprint
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hash.addData(id().toUtf8());
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}
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}
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}
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