[video_core] Properly disable/avoid building OpenGL when it's disabled (#3692)

- OpenGL symbols would still be included in builds without OpenGL, this pr fixes that
- Same goes for Vulkan, but now with `ENABLE_VULKAN`
- Add support to have OpenGL-only builds (why would you do this?)
- Add support for headless runs (yes you could just select NULL backend, but why not compile it headless? :)

Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3692
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: DraVee <chimera@dravee.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

1 files changed, 9 insertions, 6 deletions

diff --git a/src/video_core/video_core.cpp b/src/video_core/video_core.cpp
index 4a9751e208..fd91ee1667 100644
--- a/src/video_core/video_core.cpp
+++ b/src/video_core/video_core.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: 2014 Citra Emulator Project
@@ -9,26 +9,29 @@
 #include "common/logging/log.h"
 #include "common/settings.h"
 #include "core/core.h"
+#include "core/frontend/emu_window.h"
+#include "core/frontend/graphics_context.h"
 #include "video_core/host1x/gpu_device_memory_manager.h"
 #include "video_core/host1x/host1x.h"
 #include "video_core/renderer_base.h"
 #include "video_core/renderer_null/renderer_null.h"
+#ifdef HAS_OPENGL
 #include "video_core/renderer_opengl/renderer_opengl.h"
+#endif
 #include "video_core/renderer_vulkan/renderer_vulkan.h"
 #include "video_core/video_core.h"
 
 namespace {
 
-std::unique_ptr<VideoCore::RendererBase> CreateRenderer(
-    Core::System& system, Core::Frontend::EmuWindow& emu_window, Tegra::GPU& gpu,
-    std::unique_ptr<Core::Frontend::GraphicsContext> context) {
-    auto& device_memory = system.Host1x().MemoryManager();
-
+std::unique_ptr<VideoCore::RendererBase> CreateRenderer(Core::System& system, Core::Frontend::EmuWindow& emu_window, Tegra::GPU& gpu, std::unique_ptr<Core::Frontend::GraphicsContext> context) {
+    [[maybe_unused]] auto& device_memory = system.Host1x().MemoryManager();
     switch (Settings::values.renderer_backend.GetValue()) {
+#ifdef HAS_OPENGL
     case Settings::RendererBackend::OpenGL_GLSL:
     case Settings::RendererBackend::OpenGL_GLASM:
     case Settings::RendererBackend::OpenGL_SPIRV:
         return std::make_unique<OpenGL::RendererOpenGL>(emu_window, device_memory, gpu, std::move(context));
+#endif
     case Settings::RendererBackend::Vulkan:
         return std::make_unique<Vulkan::RendererVulkan>(emu_window, device_memory, gpu, std::move(context));
     case Settings::RendererBackend::Null: