aiden/video-shader-toys
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Multipass shaders

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Aiden
2026-05-12 17:08:35 +10:00
parent 1429b2e660
commit dfd49fd0e3
12 changed files with 392 additions and 72 deletions
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43
apps/RenderCadenceCompositor/render/runtime/RuntimeShaderPrepareWorker.cpp
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@@ -77,20 +77,35 @@ void RuntimeShaderPrepareWorker::Submit(const std::vector<RenderCadenceComposito
std::lock_guard<std::mutex> lock(mMutex);
for (const RenderCadenceCompositor::RuntimeRenderLayerModel& layer : layers)
{
if (layer.artifact.fragmentShaderSource.empty())
if (layer.artifact.passes.empty() && layer.artifact.fragmentShaderSource.empty())
continue;
PrepareRequest request;
request.layerId = layer.id;
request.shaderId = layer.shaderId;
request.sourceFingerprint = Fingerprint(layer.artifact);
request.artifact = layer.artifact;
std::vector<RuntimeShaderPassArtifact> passes = layer.artifact.passes;
if (passes.empty())
{
RuntimeShaderPassArtifact pass;
pass.passId = "main";
pass.fragmentShaderSource = layer.artifact.fragmentShaderSource;
pass.outputName = "layerOutput";
passes.push_back(std::move(pass));
}
auto sameLayer = [&request](const PrepareRequest& existing) {
return existing.layerId == request.layerId;
auto sameLayer = [&layer](const PrepareRequest& existing) {
return existing.layerId == layer.id;
};
mRequests.erase(std::remove_if(mRequests.begin(), mRequests.end(), sameLayer), mRequests.end());
mRequests.push_back(std::move(request));
for (const RuntimeShaderPassArtifact& pass : passes)
{
PrepareRequest request;
request.layerId = layer.id;
request.shaderId = layer.shaderId;
request.passId = pass.passId;
request.sourceFingerprint = Fingerprint(layer.artifact);
request.artifact = layer.artifact;
request.passArtifact = pass;
mRequests.push_back(std::move(request));
}
}
mCondition.notify_one();
}
@@ -137,10 +152,11 @@ void RuntimeShaderPrepareWorker::ThreadMain()
}
RuntimePreparedShaderProgram preparedProgram;
RuntimeShaderRenderer::BuildPreparedProgram(
RuntimeShaderRenderer::BuildPreparedPassProgram(
request.layerId,
request.sourceFingerprint,
request.artifact,
request.passArtifact,
preparedProgram);
glFlush();
@@ -154,5 +170,10 @@ void RuntimeShaderPrepareWorker::ThreadMain()
std::string RuntimeShaderPrepareWorker::Fingerprint(const RuntimeShaderArtifact& artifact)
{
const std::hash<std::string> hasher;
return artifact.shaderId + ":" + std::to_string(artifact.fragmentShaderSource.size()) + ":" + std::to_string(hasher(artifact.fragmentShaderSource));
std::string source;
for (const RuntimeShaderPassArtifact& pass : artifact.passes)
source += pass.passId + ":" + pass.outputName + ":" + pass.fragmentShaderSource + "\n";
if (source.empty())
source = artifact.fragmentShaderSource;
return artifact.shaderId + ":" + std::to_string(source.size()) + ":" + std::to_string(hasher(source));
}