diff --git a/docs/modernization/build-inventory.md b/docs/modernization/build-inventory.md
index 47f4f4b..9529f76 100644
--- a/docs/modernization/build-inventory.md
+++ b/docs/modernization/build-inventory.md
@@ -157,7 +157,8 @@ Known local toolchain state:
   mapping used by `Shader` active-uniform discovery and the uniform uniqueness
   check. App OpenGL initialization debug severity, debug output, GL info string,
   default depth/program-point/line-smooth state, blend factor/equation, and UI
-  render-target RGBA8 format tokens are cataloged and tested here too.
+  render-target RGBA8 format tokens are cataloged and tested here too, including
+  the legacy convert command and resize path.
 - `windows-msvc-vcpkg-headless` validates manifest install/configure/build/test
   for the current headless component matrix; see DEBT-0007 for remaining app
   and platform triplet migration.
diff --git a/docs/modernization/roadmap.md b/docs/modernization/roadmap.md
index a93e433..d1d642d 100644
--- a/docs/modernization/roadmap.md
+++ b/docs/modernization/roadmap.md
@@ -422,7 +422,8 @@ delegate to `pp_renderer_gl` as well. `Shader` no longer spells GL enum names
 directly. App OpenGL initialization debug severity, debug output, GL info
 string, default depth/program-point/line-smooth state, blend factor/equation,
 and UI render-target RGBA8 format tokens are now also cataloged and tested in
-`pp_renderer_gl`. The existing renderer classes are not yet fully
+`pp_renderer_gl`; the legacy convert command and resize path consume the same
+backend-owned mapping. The existing renderer classes are not yet fully
 behind the renderer interfaces.
 
 Implementation tasks:
diff --git a/src/app_commands.cpp b/src/app_commands.cpp
index 6635324..70188b2 100644
--- a/src/app_commands.cpp
+++ b/src/app_commands.cpp
@@ -1,16 +1,46 @@
 #include "pch.h"
 #include "app.h"
 #include "canvas.h"
+#include "renderer_gl/opengl_capabilities.h"
+
+namespace {
+
+[[nodiscard]] GLenum depth_test_state() noexcept
+{
+    return static_cast<GLenum>(pp::renderer::gl::depth_test_state());
+}
+
+[[nodiscard]] GLenum program_point_size_state() noexcept
+{
+    return static_cast<GLenum>(pp::renderer::gl::program_point_size_state());
+}
+
+[[nodiscard]] GLenum source_alpha_blend_factor() noexcept
+{
+    return static_cast<GLenum>(pp::renderer::gl::source_alpha_blend_factor());
+}
+
+[[nodiscard]] GLenum one_minus_source_alpha_blend_factor() noexcept
+{
+    return static_cast<GLenum>(pp::renderer::gl::one_minus_source_alpha_blend_factor());
+}
+
+[[nodiscard]] GLenum add_blend_equation() noexcept
+{
+    return static_cast<GLenum>(pp::renderer::gl::add_blend_equation());
+}
+
+}
 
 void App::cmd_convert(std::string pano_path, std::string out_path)
 {
-    glDisable(GL_DEPTH_TEST);
-    glEnable(GL_PROGRAM_POINT_SIZE);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    glBlendEquation(GL_FUNC_ADD);
+    glDisable(depth_test_state());
+    glEnable(program_point_size_state());
+    glBlendFunc(source_alpha_blend_factor(), one_minus_source_alpha_blend_factor());
+    glBlendEquation(add_blend_equation());
 
-    Canvas* canvas = new Canvas;
-    canvas->create(CANVAS_RES, CANVAS_RES);
-    canvas->project_open_thread(pano_path);
-    canvas->export_equirectangular_thread(out_path);
+    Canvas* command_canvas = new Canvas;
+    command_canvas->create(CANVAS_RES, CANVAS_RES);
+    command_canvas->project_open_thread(pano_path);
+    command_canvas->export_equirectangular_thread(out_path);
 }
diff --git a/src/app_events.cpp b/src/app_events.cpp
index bf44a25..5662148 100644
--- a/src/app_events.cpp
+++ b/src/app_events.cpp
@@ -1,5 +1,15 @@
 #include "pch.h"
 #include "app.h"
+#include "renderer_gl/opengl_capabilities.h"
+
+namespace {
+
+[[nodiscard]] GLint rgba8_internal_format() noexcept
+{
+    return static_cast<GLint>(pp::renderer::gl::rgba8_internal_format());
+}
+
+}
 
 #ifdef __ANDROID__
 void displayKeyboard(bool pShow);
@@ -84,7 +94,7 @@ void App::tick(float dt)
 void App::resize(float w, float h)
 {
     LOG("App::resize %d %d", (int)w, (int)h);
-    uirtt.create(w, h, -1, GL_RGBA8, true);
+    uirtt.create(static_cast<int>(w), static_cast<int>(h), -1, rgba8_internal_format(), true);
     redraw = true;
     width = w;
     height = h;