Share retained GL runtime dispatch adapters

src/hmd.cpp

@@ -1,30 +1,14 @@
 #include "pch.h"
 #include "hmd.h"
+#include "legacy_ui_gl_dispatch.h"
 #include "log.h"
 #include "renderer_gl/opengl_capabilities.h"
 #include <array>
 
 namespace {
-
-void set_opengl_viewport(std::int32_t x, std::int32_t y, std::int32_t width, std::int32_t height) noexcept
-{
-    glViewport(static_cast<GLint>(x), static_cast<GLint>(y), static_cast<GLsizei>(width), static_cast<GLsizei>(height));
-}
-
 void apply_hmd_viewport(std::int32_t x, std::int32_t y, std::int32_t width, std::int32_t height)
 {
-    const auto status = pp::renderer::gl::apply_opengl_viewport(
-        pp::renderer::gl::OpenGlViewportRect {
-            .x = x,
-            .y = y,
-            .width = width,
-            .height = height,
-        },
-        pp::renderer::gl::OpenGlViewportDispatch {
-            .viewport = set_opengl_viewport,
-        });
-    if (!status.ok())
-        LOG("HMD viewport dispatch failed because: %s", status.message);
+    pp::legacy::ui_gl::apply_viewport(x, y, width, height, "HMD");
 }
 
 }