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replace overlay render target when viewport resizes

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This commit is contained in:
Nick Fisher
2025-07-01 16:58:46 +08:00
parent e731556e6f
commit 73e6597301
4 changed files with 51 additions and 3 deletions
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26
thermion_dart/native/include/components/OverlayComponentManager.hpp
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@@ -1,8 +1,11 @@
#pragma once
#include <map>
#include <mutex>
#include <vector>
#include <math/mat4.h>
#include <filament/Engine.h>
#include <filament/Material.h>
#include <filament/MaterialInstance.h>
@@ -44,8 +47,24 @@ namespace thermion
mEngine->destroy(mDepthMaterial);
}
void setRenderTarget(filament::RenderTarget *renderTarget) {
std::lock_guard lock(mMutex);
mRenderTarget = renderTarget;
auto *color = mRenderTarget->getTexture(filament::RenderTarget::AttachmentPoint::COLOR);
for (auto it = begin(); it < end(); it++)
{
const auto &entity = getEntity(it);
auto componentInstance = getInstance(entity);
auto &materialInstance = elementAt<0>(componentInstance);
materialInstance->setParameter("depth", color, mDepthSampler);
}
}
void addOverlayComponent(utils::Entity target, filament::MaterialInstance *materialInstance)
{
std::lock_guard lock(mMutex);
auto *color = mRenderTarget->getTexture(filament::RenderTarget::AttachmentPoint::COLOR);
materialInstance->setParameter("depth", color, mDepthSampler);
if (!hasComponent(target))
@@ -58,6 +77,8 @@ namespace thermion
void removeOverlayComponent(utils::Entity target)
{
std::lock_guard lock(mMutex);
if (hasComponent(target))
{
removeComponent(target);
@@ -67,10 +88,12 @@ namespace thermion
void update()
{
if (!mView || !mScene || getComponentCount() == 0)
if (!mView || !mScene || !mRenderTarget || getComponentCount() == 0)
{
return;
}
std::lock_guard lock(mMutex);
auto &rm = mEngine->getRenderableManager();
std::map<utils::Entity, std::vector<filament::MaterialInstance *>> materials;
auto *scene = mView->getScene();
@@ -138,6 +161,7 @@ namespace thermion
}
private:
std::mutex mMutex;
filament::Engine *mEngine = std::nullptr_t();
filament::View *mView = std::nullptr_t();
filament::Scene *mScene = std::nullptr_t();