core: rename mbgl directories to mln (#4511)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/mln/gl/command_encoder.cpp

@@ -0,0 +1,59 @@
+#include <mln/gl/command_encoder.hpp>
+#include <mln/gl/upload_pass.hpp>
+#include <mln/gl/render_pass.hpp>
+#include <mln/gl/context.hpp>
+#include <mln/gl/renderable_resource.hpp>
+#include <mln/gl/debugging_extension.hpp>
+#include <mln/platform/gl_functions.hpp>
+
+#include <cstring>
+
+namespace mln {
+namespace gl {
+
+CommandEncoder::~CommandEncoder() {
+    const auto debugGroup(createDebugGroup("cleanup"));
+    context.performCleanup();
+}
+
+std::unique_ptr<gfx::UploadPass> CommandEncoder::createUploadPass(const char* name, gfx::Renderable&) {
+    return std::make_unique<gl::UploadPass>(*this, name);
+}
+
+std::unique_ptr<gfx::RenderPass> CommandEncoder::createRenderPass(const char* name,
+                                                                  const gfx::RenderPassDescriptor& descriptor) {
+    return std::make_unique<gl::RenderPass>(*this, name, descriptor);
+}
+
+void CommandEncoder::present(gfx::Renderable& renderable) {
+    renderable.getResource<gl::RenderableResource>().swap();
+}
+
+void CommandEncoder::pushDebugGroup(const char* name) {
+    (void)name;
+#ifndef NDEBUG
+    if (auto debugging = context.getDebuggingExtension()) {
+        if (debugging->pushDebugGroup) {
+            MBGL_CHECK_ERROR(
+                debugging->pushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 0, platform::GLsizei(strlen(name)), name));
+        } else if (debugging->pushGroupMarkerEXT) {
+            MBGL_CHECK_ERROR(debugging->pushGroupMarkerEXT(platform::GLsizei(strlen(name) + 1), name));
+        }
+    }
+#endif
+}
+
+void CommandEncoder::popDebugGroup() {
+#ifndef NDEBUG
+    if (auto debugging = context.getDebuggingExtension()) {
+        if (debugging->popDebugGroup) {
+            MBGL_CHECK_ERROR(debugging->popDebugGroup());
+        } else if (debugging->popGroupMarkerEXT) {
+            MBGL_CHECK_ERROR(debugging->popGroupMarkerEXT());
+        }
+    }
+#endif
+}
+
+} // namespace gl
+} // namespace mln