Share retained runtime GL dispatch

src/legacy_gl_runtime_dispatch.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <cstdint>
+
+#include "renderer_gl/opengl_capabilities.h"
+
+namespace pp::legacy::gl_runtime {
+
+inline const char* query_opengl_string(std::uint32_t name) noexcept
+{
+    return reinterpret_cast<const char*>(glGetString(static_cast<GLenum>(name)));
+}
+
+inline void query_opengl_integer_scalar(std::uint32_t name, std::int32_t* value) noexcept
+{
+    GLint queried_value = 0;
+    glGetIntegerv(static_cast<GLenum>(name), &queried_value);
+    *value = static_cast<std::int32_t>(queried_value);
+}
+
+inline const char* query_opengl_indexed_string(std::uint32_t name, std::uint32_t index) noexcept
+{
+    return reinterpret_cast<const char*>(
+        glGetStringi(static_cast<GLenum>(name), static_cast<GLuint>(index)));
+}
+
+inline pp::renderer::gl::OpenGlRuntimeInfoDispatch runtime_info_dispatch() noexcept
+{
+    return pp::renderer::gl::OpenGlRuntimeInfoDispatch {
+        .get_string = query_opengl_string,
+    };
+}
+
+inline pp::renderer::gl::OpenGlExtensionQueryDispatch extension_query_dispatch() noexcept
+{
+    return pp::renderer::gl::OpenGlExtensionQueryDispatch {
+        .get_integer = query_opengl_integer_scalar,
+        .get_string_indexed = query_opengl_indexed_string,
+    };
+}
+
+} // namespace pp::legacy::gl_runtime