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Release HZB diagnostic texture when preview closes

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Emil
2026-09-23 23:09:24 +03:00
parent bb46e0091e
commit 868f19aaaa
3 changed files with 44 additions and 5 deletions
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tests/editor_debug_overlay.cpp
+23 -1
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@@ -149,12 +149,15 @@ int main(int argc, char** argv) {
require(preview != hzb_scene.ui_triangles.end() && preview->texture->width == 128 &&
preview->texture->height == 128 && preview->texture->revision > 0,
"Enabled HZB preview emits the selected mip as a revised texture");
const std::weak_ptr<const render::Texture> first_preview = preview->texture;
click_preview();
hzb_scene.ui_triangles.clear();
hzb_overlay.append(hzb_scene, hzb_renderer, 1.f / 60.f);
require(std::all_of(hzb_scene.ui_triangles.begin(), hzb_scene.ui_triangles.end(),
[&](const auto& batch) { return batch.texture == font_texture; }),
"Disabling HZB preview removes its texture");
require(first_preview.expired(),
"Disabling HZB preview releases its CPU texture without rendering");
click_preview();
hzb_scene.ui_triangles.clear();
hzb_overlay.append(hzb_scene, hzb_renderer, 1.f / 60.f);
@@ -164,16 +167,35 @@ int main(int argc, char** argv) {
"HZB preview renders cleanly and open diagnostics enable GPU counters");
hzb_scene.ui_triangles.clear();
hzb_overlay.append(hzb_scene, hzb_renderer, 1.f / 60.f);
const auto active_preview = std::find_if(hzb_scene.ui_triangles.begin(),
hzb_scene.ui_triangles.end(),
[&](const auto& batch) {
return batch.texture != font_texture;
});
require(active_preview != hzb_scene.ui_triangles.end(),
"Re-enabling HZB preview creates a live texture");
const std::weak_ptr<const render::Texture> second_preview = active_preview->texture;
hzb_renderer.render(hzb_scene);
const auto with_preview_textures = hzb_renderer.stats().texture_count;
require(with_preview_textures >= 3,
"HZB preview uploads an additional GPU texture");
if (argc > 2)
hzb_renderer.capture(argv[2]);
hzb_overlay.set_visible(false);
render::Event close_hzb;
close_hzb.type = render::Event::Type::KeyDown;
close_hzb.key = "F12";
require(hzb_overlay.process_events(std::span(&close_hzb, 1)).empty() &&
!hzb_overlay.visible(),
"F12 closes an active HZB preview");
hzb_scene.ui_triangles.clear();
hzb_overlay.append(hzb_scene, hzb_renderer, 1.f / 60.f);
require(hzb_scene.ui_triangles.empty(), "Hidden panel emits no HZB preview");
hzb_renderer.render(hzb_scene);
require(!hzb_renderer.stats().visibility_counters_valid,
"Closing diagnostics disables GPU visibility readback");
require(second_preview.expired() &&
hzb_renderer.stats().texture_count + 1 == with_preview_textures,
"Closing diagnostics retires its HZB GPU texture on the next frame");
std::cout << "ImGui diagnostics, F12, font atlas, clipping and event isolation passed\n";
return 0;
} catch (const std::exception& error) {