Here is a list of all struct and union fields with links to the structures/unions they belong to:

### - r -

- r : Knob , SDL_BlitInfo , SDL_Color , SDL_MessageBoxColor , SDL_Renderer , SDL_Texture , tColorRGBA , VkComponentMapping
- radix : SDL_FormatInfo
- RaiseWindow : SDL_VideoDevice
- ramp : SDL_HapticEffect
- range : VkBufferViewCreateInfo , VkDescriptorBufferInfo
- rasterizationOrder : VkPipelineRasterizationStateRasterizationOrderAMD
- rasterizationSamples : VkPipelineMultisampleStateCreateInfo
- rasterizerDiscardEnable : VkPipelineRasterizationStateCreateInfo
- rate_incr : SDL_AudioStream , SDL_AudioCVT
- rawbuf : SDL_PrivateAudioData
- read : SDL_RWops
- ready_semaphore : SDL_PrivateAudioData
- really : SDL_PrivateAudioData
- recording : SDL_GestureTouch
- rect : VkClearRect
- rectangleCount : VkPresentRegionKHR
- recursive : SDL_mutex
- red_size : SDL_VideoDevice
- red_x : MonitorInfo
- red_y : MonitorInfo
- reductionMode : VkSamplerReductionModeCreateInfoEXT
- ref_count : SDL_GameController , SDL_Haptic , SDL_Joystick
- REFCLSID : ITfInputProcessorProfileActivationSinkVtbl , ITfThreadMgrExVtbl , ITfThreadMgrVtbl
- refcount : SDL_Palette , SDL_PixelFormat , SDL_PrivateAudioData , SDL_Surface , TSFSink
- reference : VkStencilOpState
- REFGUID : ITfInputProcessorProfileActivationSinkVtbl
- REFIID : ITfCandidateListUIElementVtbl , ITfDocumentMgrVtbl , ITfInputProcessorProfileActivationSinkVtbl , ITfReadingInformationUIElementVtbl , ITfSourceVtbl , ITfThreadMgrExVtbl , ITfThreadMgrVtbl , ITfUIElementMgrVtbl , ITfUIElementSinkVtbl , ITfUIElementVtbl
- refresh_rate : SDL_DisplayMode , SDLTest_CommonState
- refreshDuration : VkRefreshCycleDurationGOOGLE
- refreshRate : VkDisplayModeParametersKHR
- registry : SDL_VideoData
- relative_mode : SDL_Mouse
- relative_mode_warp : SDL_Mouse
- relative_motion : zwp_relative_pointer_v1_listener
- relative_mouse_mode : SDL_VideoData
- relative_pointer_manager : SDL_VideoData
- relative_speed_scale : SDL_Mouse
- release : wl_buffer_listener
- release_behavior : SDL_VideoDevice
- remote : recDevice
- removed : recDevice , SDL_EventWatcher
- RemoveGLView() : SDL_BWin
- render : SDL_PrivateAudioData , SDL_VideoData
- render_flags : SDLTest_CommonState
- renderArea : VkRenderPassBeginInfo
- RenderClear : SDL_Renderer
- RenderCopy : SDL_Renderer
- RenderCopyEx : SDL_Renderer
- RenderDrawLines : SDL_Renderer
- RenderDrawPoints : SDL_Renderer
- renderdriver : SDLTest_CommonState
- renderer : DrawState , SDL_Texture , SDL_WindowTextureData
- renderers : SDLTest_CommonState
- RenderFillRects : SDL_Renderer
- renderingFinishedSemaphore : VulkanContext
- renderPass : VkCommandBufferInheritanceInfo , VkFramebufferCreateInfo , VkGraphicsPipelineCreateInfo , VkRenderPassBeginInfo
- RenderPresent : SDL_Renderer
- RenderReadPixels : SDL_Renderer
- repeat : SDL_KeyboardEvent
- repeat_info : wl_keyboard_listener
- requested_fullscreen_mode : SDL_WindowData
- requiresDedicatedAllocation : VkMemoryDedicatedRequirementsKHR
- resampler_func : SDL_AudioStream
- resampler_padding : SDL_AudioStream
- resampler_padding_samples : SDL_AudioStream
- resampler_state : SDL_AudioStream
- reset_notification : SDL_VideoDevice
- reset_resampler_func : SDL_AudioStream
- ResetTouch : SDL_VideoDevice
- residencyAlignedMipSize : VkPhysicalDeviceSparseProperties
- residencyNonResidentStrict : VkPhysicalDeviceSparseProperties
- residencyStandard2DBlockShape : VkPhysicalDeviceSparseProperties
- residencyStandard2DMultisampleBlockShape : VkPhysicalDeviceSparseProperties
- residencyStandard3DBlockShape : VkPhysicalDeviceSparseProperties
- ResizeWindowShape : SDL_ShapeDriver
- resource : RPI_CursorData
- resourceDeviceIndex : VkDeviceGroupBindSparseInfoKHX
- resourceOffset : VkSparseMemoryBind
- restore : DFB_WindowData
- RestoreWindow : SDL_VideoDevice
- resume : SDL_PrivateAudioData
- resumeVisibleObservation : Cocoa_WindowListener
- retained_backing : SDL_VideoDevice
- rgb444 : MonitorInfo
- right_border : DetailedTiming
- right_coeff : SDL_HapticCondition
- right_sat : SDL_HapticCondition
- right_size : DFB_Theme
- rightMouseDown: : Cocoa_WindowListener
- rightMouseDragged: : Cocoa_WindowListener
- rightMouseUp: : Cocoa_WindowListener
- Rloss : RLEDestFormat , SDL_PixelFormat
- Rmask : RLEDestFormat , SDL_PixelFormat
- robustBufferAccess : VkPhysicalDeviceFeatures
- roleobj : SDL_zxdg_shell_surface
- routine : LL_Test
- rowPitch : VkSubresourceLayout
- Rshift : RLEDestFormat , SDL_PixelFormat
- rumble_effect : SDL_Haptic
- rumble_id : SDL_Haptic
- Run() : sealed
- rwcount : SDL_EventQueue
- SDL_RaiseWindow : SDL_DYNAPI_jump_table
- SDL_ReadBE16 : SDL_DYNAPI_jump_table
- SDL_ReadBE32 : SDL_DYNAPI_jump_table
- SDL_ReadBE64 : SDL_DYNAPI_jump_table
- SDL_ReadU8 : SDL_DYNAPI_jump_table
- SDL_realloc : SDL_DYNAPI_jump_table
- SDL_RegisterEvents : SDL_DYNAPI_jump_table
- SDL_RemoveTimer : SDL_DYNAPI_jump_table
- SDL_RenderClear : SDL_DYNAPI_jump_table
- SDL_RenderCopyEx : SDL_DYNAPI_jump_table
- SDL_RenderDrawLines : SDL_DYNAPI_jump_table
- SDL_RenderDrawPoints : SDL_DYNAPI_jump_table
- SDL_RenderDrawRects : SDL_DYNAPI_jump_table
- SDL_RenderFillRects : SDL_DYNAPI_jump_table
- SDL_RenderGetMetalLayer : SDL_DYNAPI_jump_table
- SDL_RenderPresent : SDL_DYNAPI_jump_table
- SDL_RenderSetClipRect : SDL_DYNAPI_jump_table
- SDL_RenderSetIntegerScale : SDL_DYNAPI_jump_table
- SDL_RenderSetLogicalSize : SDL_DYNAPI_jump_table
- SDL_RenderSetScale : SDL_DYNAPI_jump_table
- SDL_RenderSetViewport : SDL_DYNAPI_jump_table
- SDL_ResetAssertionReport : SDL_DYNAPI_jump_table
- SDL_RWFromMem : SDL_DYNAPI_jump_table