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feat: add explicit camera stack ordering

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This commit is contained in:
ssdfasd
2026-04-01 13:10:32 +08:00
parent f80fb9860e
commit a908e61ecb
6 changed files with 100 additions and 5 deletions
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29
engine/src/Rendering/SceneRenderer.cpp
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@@ -13,6 +13,10 @@ namespace Rendering {
namespace {
bool CompareCameraRenderRequest(const CameraRenderRequest& lhs, const CameraRenderRequest& rhs) {
if (lhs.cameraStackOrder != rhs.cameraStackOrder) {
return lhs.cameraStackOrder < rhs.cameraStackOrder;
}
if (lhs.cameraDepth != rhs.cameraDepth) {
return lhs.cameraDepth < rhs.cameraDepth;
}
@@ -27,7 +31,10 @@ bool IsUsableCamera(const Components::CameraComponent* camera) {
camera->GetGameObject()->IsActiveInHierarchy();
}
RenderClearFlags ResolveClearFlags(const Components::CameraComponent& camera, size_t cameraIndex) {
RenderClearFlags ResolveClearFlags(
const Components::CameraComponent& camera,
size_t renderedBaseCameraCount,
size_t renderedRequestCount) {
switch (camera.GetClearMode()) {
case Components::CameraClearMode::ColorAndDepth:
return RenderClearFlags::All;
@@ -37,7 +44,11 @@ RenderClearFlags ResolveClearFlags(const Components::CameraComponent& camera, si
return RenderClearFlags::None;
case Components::CameraClearMode::Auto:
default:
return cameraIndex == 0 ? RenderClearFlags::All : RenderClearFlags::Depth;
if (camera.GetStackType() == Components::CameraStackType::Overlay) {
return renderedRequestCount == 0 ? RenderClearFlags::All : RenderClearFlags::Depth;
}
return renderedBaseCameraCount == 0 ? RenderClearFlags::All : RenderClearFlags::Depth;
}
}
@@ -101,6 +112,10 @@ std::vector<CameraRenderRequest> SceneRenderer::BuildRenderRequests(
cameras.begin(),
cameras.end(),
[](const Components::CameraComponent* lhs, const Components::CameraComponent* rhs) {
if (lhs->GetStackType() != rhs->GetStackType()) {
return static_cast<int>(lhs->GetStackType()) < static_cast<int>(rhs->GetStackType());
}
if (lhs->GetDepth() != rhs->GetDepth()) {
return lhs->GetDepth() < rhs->GetDepth();
}
@@ -108,8 +123,8 @@ std::vector<CameraRenderRequest> SceneRenderer::BuildRenderRequests(
return lhs < rhs;
});
for (size_t cameraIndex = 0; cameraIndex < cameras.size(); ++cameraIndex) {
Components::CameraComponent* camera = cameras[cameraIndex];
size_t renderedBaseCameraCount = 0;
for (Components::CameraComponent* camera : cameras) {
CameraRenderRequest request;
request.scene = &scene;
@@ -118,10 +133,14 @@ std::vector<CameraRenderRequest> SceneRenderer::BuildRenderRequests(
request.surface = surface;
request.surface.SetRenderArea(ResolveCameraRenderArea(*camera, surface));
request.cameraDepth = camera->GetDepth();
request.clearFlags = ResolveClearFlags(*camera, cameraIndex);
request.cameraStackOrder = static_cast<uint8_t>(camera->GetStackType());
request.clearFlags = ResolveClearFlags(*camera, renderedBaseCameraCount, requests.size());
if (request.surface.GetRenderAreaWidth() > 0 &&
request.surface.GetRenderAreaHeight() > 0) {
requests.push_back(request);
if (camera->GetStackType() == Components::CameraStackType::Base) {
++renderedBaseCameraCount;
}
}
}