Merge pull request #404 from bunnei/more-frame-synch-fixes

GPU: Toggle active framebuffer each frame

src/core/hle/service/gsp_gpu.cpp

@@ -291,8 +291,11 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         // Update framebuffer information if requested
         for (int screen_id = 0; screen_id < 2; ++screen_id) {
             FrameBufferUpdate* info = GetFrameBufferInfo(thread_id, screen_id);
-            if (info->is_dirty)
+
+            if (info->is_dirty) {
                 SetBufferSwap(screen_id, info->framebuffer_info[info->index]);
+                info->framebuffer_info->active_fb = info->framebuffer_info->active_fb ^ 1;
+            }
 
             info->is_dirty = false;
         }

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -87,8 +87,11 @@ void RendererOpenGL::SwapBuffers() {
  */
 void RendererOpenGL::LoadFBToActiveGLTexture(const GPU::Regs::FramebufferConfig& framebuffer,
                                              const TextureInfo& texture) {
+
+    // TODO: Why are active_fb and the valid framebuffer flipped compared to 3dbrew documentation
+    // and GSP definitions?
     const VAddr framebuffer_vaddr = Memory::PhysicalToVirtualAddress(
-        framebuffer.active_fb == 1 ? framebuffer.address_left2 : framebuffer.address_left1);
+        framebuffer.active_fb == 0 ? framebuffer.address_left2 : framebuffer.address_left1);
 
     LOG_TRACE(Render_OpenGL, "0x%08x bytes from 0x%08x(%dx%d), fmt %x",
         framebuffer.stride * framebuffer.height,