make OpenGL renderer a build option

mostly meant for the Switch port

CMakeLists.txt

@@ -50,6 +50,12 @@ else()
 	option(ENABLE_LTO "Enable link-time optimization" OFF)
 endif()
 
+option(ENABLE_OGLRENDERER "Enable OpenGL renderer" ON)
+
+if (ENABLE_OGLRENDERER)
+    add_definitions(-DOGLRENDERER_ENABLED)
+endif()
+
 if (CMAKE_BUILD_TYPE STREQUAL Debug)
 	add_compile_options(-Og)
 endif()

src/CMakeLists.txt

@@ -26,17 +26,12 @@ add_library(core STATIC
 	FIFO.h
 	GBACart.cpp
 	GPU.cpp
-	GPU_OpenGL.cpp
-	GPU_OpenGL_shaders.h
 	GPU2D.cpp
 	GPU3D.cpp
-	GPU3D_OpenGL.cpp
-	GPU3D_OpenGL_shaders.h
 	GPU3D_Soft.cpp
 	melonDLDI.h
 	NDS.cpp
 	NDSCart.cpp
-	OpenGLSupport.cpp
 	Platform.h
 	ROMList.h
 	RTC.cpp
@@ -52,6 +47,16 @@ add_library(core STATIC
 	xxhash/xxhash.c
 )
 
+if (ENABLE_OGLRENDERER)
+	target_sources(core PRIVATE
+		GPU_OpenGL.cpp
+		GPU_OpenGL_shaders.h
+		GPU3D_OpenGL.cpp
+		GPU3D_OpenGL_shaders.h
+		OpenGLSupport.cpp
+	)
+endif()
+
 if (ENABLE_JIT)
 	enable_language(ASM)
 
@@ -95,8 +100,16 @@ if (ENABLE_JIT)
 	endif()
 endif()
 
-if (WIN32)
-	target_link_libraries(core ole32 comctl32 ws2_32 opengl32)
+if (ENABLE_OGLRENDERER)
+	if (WIN32)
+		target_link_libraries(core ole32 comctl32 ws2_32 opengl32)
+	else()
+		target_link_libraries(core GL EGL)
+	endif()
 else()
-	target_link_libraries(core GL EGL)
-endif()
+	if (WIN32)
+		target_link_libraries(core ole32 comctl32 ws2_32)
+	else()
+		target_link_libraries(core)
+	endif()
+endif()

src/GPU.cpp

@@ -280,6 +280,7 @@ void AssignFramebuffers()
 
 void InitRenderer(int renderer)
 {
+#ifdef OGLRENDERER_ENABLED
     if (renderer == 1)
     {
         if (!GLCompositor::Init())
@@ -292,8 +293,8 @@ void InitRenderer(int renderer)
             renderer = 0;
         }
     }
-
-    if (renderer == 0)
+    else
+#endif
     {
         GPU3D::SoftRenderer::Init();
     }
@@ -308,11 +309,13 @@ void DeInitRenderer()
     {
         GPU3D::SoftRenderer::DeInit();
     }
+#ifdef OGLRENDERER_ENABLED
     else
     {
         GPU3D::GLRenderer::DeInit();
         GLCompositor::DeInit();
     }
+#endif
 }
 
 void ResetRenderer()
@@ -321,11 +324,13 @@ void ResetRenderer()
     {
         GPU3D::SoftRenderer::Reset();
     }
+#ifdef OGLRENDERER_ENABLED
     else
     {
         GLCompositor::Reset();
         GPU3D::GLRenderer::Reset();
     }
+#endif
 }
 
 void SetRenderSettings(int renderer, RenderSettings& settings)
@@ -364,11 +369,13 @@ void SetRenderSettings(int renderer, RenderSettings& settings)
     {
         GPU3D::SoftRenderer::SetRenderSettings(settings);
     }
+#ifdef OGLRENDERER_ENABLED
     else
     {
         GLCompositor::SetRenderSettings(settings);
         GPU3D::GLRenderer::SetRenderSettings(settings);
     }
+#endif
 }
 
 
@@ -1055,7 +1062,9 @@ void StartScanline(u32 line)
             GPU2D_B->VBlank();
             GPU3D::VBlank();
 
+#ifdef OGLRENDERER_ENABLED
             if (Accelerated) GLCompositor::RenderFrame();
+#endif
         }
         else if (VCount == 144)
         {

src/GPU.h

@@ -437,6 +437,7 @@ void SetDispStat(u32 cpu, u16 val);
 
 void SetVCount(u16 val);
 
+#ifdef OGLRENDERER_ENABLED
 namespace GLCompositor
 {
 
@@ -450,6 +451,7 @@ void RenderFrame();
 void BindOutputTexture();
 
 }
+#endif
 
 }
 

src/GPU2D.cpp

@@ -949,6 +949,7 @@ void GPU2D::VBlankEnd()
     //OBJMosaicY = 0;
     //OBJMosaicYCount = 0;
 
+#ifdef OGLRENDERER_ENABLED
     if (Accelerated)
     {
         if ((Num == 0) && (CaptureCnt & (1<<31)) && (((CaptureCnt >> 29) & 0x3) != 1))
@@ -956,6 +957,7 @@ void GPU2D::VBlankEnd()
             GPU3D::GLRenderer::PrepareCaptureFrame();
         }
     }
+#endif
 }
 
 

src/GPU3D.cpp

@@ -2528,13 +2528,19 @@ void VBlank()
 void VCount215()
 {
     if (GPU::Renderer == 0) SoftRenderer::RenderFrame();
+#ifdef OGLRENDERER_ENABLED
     else                    GLRenderer::RenderFrame();
+#endif
 }
 
 u32* GetLine(int line)
 {
     if (GPU::Renderer == 0) return SoftRenderer::GetLine(line);
+#ifdef OGLRENDERER_ENABLED
     else                    return GLRenderer::GetLine(line);
+#else
+    return NULL;
+#endif
 }
 
 

src/GPU3D.h

@@ -139,6 +139,7 @@ u32* GetLine(int line);
 
 }
 
+#ifdef OGLRENDERER_ENABLED
 namespace GLRenderer
 {
 
@@ -154,6 +155,7 @@ u32* GetLine(int line);
 void SetupAccelFrame();
 
 }
+#endif
 
 }
 

src/frontend/qt_sdl/VideoSettingsDialog.cpp

@@ -50,6 +50,10 @@ VideoSettingsDialog::VideoSettingsDialog(QWidget* parent) : QDialog(parent), ui(
     connect(grp3DRenderer, SIGNAL(buttonClicked(int)), this, SLOT(onChange3DRenderer(int)));
     grp3DRenderer->button(Config::_3DRenderer)->setChecked(true);
 
+#ifndef OGLRENDERER_ENABLED
+    ui->rb3DOpenGL->setEnabled(false);
+#endif
+
     ui->cbGLDisplay->setChecked(Config::ScreenUseGL != 0);
 
     ui->cbVSync->setChecked(Config::ScreenVSync != 0);

src/frontend/qt_sdl/main.cpp

@@ -49,7 +49,9 @@
 
 #include "NDS.h"
 #include "GBACart.h"
+#ifdef OGLRENDERER_ENABLED
 #include "OpenGLSupport.h"
+#endif
 #include "GPU.h"
 #include "SPU.h"
 #include "Wifi.h"
@@ -336,13 +338,17 @@ void EmuThread::run()
     videoSettings.Soft_Threaded = Config::Threaded3D != 0;
     videoSettings.GL_ScaleFactor = Config::GL_ScaleFactor;
 
+#ifdef OGLRENDERER_ENABLED
     if (hasOGL)
     {
         oglContext->makeCurrent(oglSurface);
         videoRenderer = OpenGL::Init() ? Config::_3DRenderer : 0;
     }
     else
+#endif
+    {
         videoRenderer = 0;
+    }
 
     GPU::InitRenderer(videoRenderer);
     GPU::SetRenderSettings(videoRenderer, videoSettings);
@@ -396,13 +402,17 @@ void EmuThread::run()
                 if (hasOGL != mainWindow->hasOGL)
                 {
                     hasOGL = mainWindow->hasOGL;
+#ifdef OGLRENDERER_ENABLED
                     if (hasOGL)
                     {
                         oglContext->makeCurrent(oglSurface);
                         videoRenderer = OpenGL::Init() ? Config::_3DRenderer : 0;
                     }
                     else
+#endif
+                    {
                         videoRenderer = 0;
+                    }
                 }
                 else
                     videoRenderer = hasOGL ? Config::_3DRenderer : 0;
@@ -923,12 +933,14 @@ void ScreenPanelGL::paintGL()
     int frontbuf = GPU::FrontBuffer;
     glActiveTexture(GL_TEXTURE0);
 
+#ifdef OGLRENDERER_ENABLED
     if (GPU::Renderer != 0)
     {
         // hardware-accelerated render
         GPU::GLCompositor::BindOutputTexture();
     }
     else
+#endif
     {
         // regular render
         glBindTexture(GL_TEXTURE_2D, screenTexture);