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Viewport, Platform: Added void* to render/swap buffer functions. Comments. (#1542, #1042)

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This commit is contained in:
omar
2018-03-19 15:20:47 +01:00
parent 0e09032750
commit 2fecd332fc
24 changed files with 71 additions and 48 deletions
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22
imgui.h
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@@ -545,12 +545,12 @@ namespace ImGui
IMGUI_API void SetClipboardText(const char* text);
// (Optional) Platform interface for multi-viewport support
IMGUI_API ImGuiPlatformIO& GetPlatformIO(); // Platform/Renderer functions.
IMGUI_API ImGuiPlatformData* GetPlatformData(); // List of viewports.
IMGUI_API ImGuiViewport* GetMainViewport(); // GetPlatformData()->MainViewport
IMGUI_API void UpdatePlatformWindows(); // Call in main loop. Create/Destroy/Resize platform windows so there's one for each viewport
IMGUI_API void RenderPlatformWindows(); // Call in main loop. Call RenderWindow/SwapBuffers from the ImGuiPlatformIO structure. May be reimplemented by user.
IMGUI_API void DestroyPlatformWindows(); // Call in back-end shutdown.
IMGUI_API ImGuiPlatformIO& GetPlatformIO(); // Platform/Renderer function, for back-end to setup.
IMGUI_API ImGuiPlatformData* GetPlatformData(); // List of viewports. Viewport 0 is always the main viewport, followed by the secondary viewports.
IMGUI_API ImGuiViewport* GetMainViewport(); // GetPlatformData()->MainViewport
IMGUI_API void UpdatePlatformWindows(); // Call in main loop. Create/Destroy/Resize platform windows so there's one for each viewport
IMGUI_API void RenderPlatformWindows(void* platform_render_arg, void* renderer_render_arg); // Call in main loop. Call RenderWindow/SwapBuffers from the ImGuiPlatformIO structure. May be reimplemented by user.
IMGUI_API void DestroyPlatformWindows(); // (Optional) Call in back-end shutdown if you need to close Platform Windows before imgui shutdown.
IMGUI_API ImGuiViewport* FindViewportByPlatformHandle(void* platform_handle);
// Memory Utilities
@@ -1868,6 +1868,8 @@ struct ImFont
// This is designed so we can mix and match two imgui_impl_xxxx files, one for the Platform (~ Windowing), one for Renderer.
// Custom engine back-ends will often provide both Platform and Renderer interfaces and thus may not need to use all functions.
// Platform functions are typically called before their Renderer counterpart, apart from Destroy which are called the other way.
// RenderPlatformWindows() basically iterate secondary viewports and call Platform+Renderer's RenderWindow then Platform+Renderer's SwapBuffers,
// You may skip using RenderPlatformWindows() and call your functions yourself if you need specific behavior for your multi-window rendering.
struct ImGuiPlatformIO
{
// Platform (e.g. Win32, GLFW, SDL2)
@@ -1880,8 +1882,8 @@ struct ImGuiPlatformIO
ImVec2 (*Platform_GetWindowSize)(ImGuiViewport* vp);
void (*Platform_SetWindowTitle)(ImGuiViewport* vp, const char* title);
void (*Platform_SetWindowAlpha)(ImGuiViewport* vp, float alpha); // (Optional) Setup window transparency
void (*Platform_RenderWindow)(ImGuiViewport* vp); // (Optional) Setup for render (platform side)
void (*Platform_SwapBuffers)(ImGuiViewport* vp); // (Optional) Call Present/SwapBuffers (platform side)
void (*Platform_RenderWindow)(ImGuiViewport* vp, void* render_arg); // (Optional) Setup for render (platform side)
void (*Platform_SwapBuffers)(ImGuiViewport* vp, void* render_arg); // (Optional) Call Present/SwapBuffers (platform side)
float (*Platform_GetWindowDpiScale)(ImGuiViewport* vp); // (Optional) DPI handling: Return DPI scale for this viewport. 1.0f = 96 DPI. (FIXME-DPI)
void (*Platform_OnChangedViewport)(ImGuiViewport* vp); // (Optional) DPI handling: Called during Begin() every time the viewport we are outputting into changes, so back-end has a chance to swap fonts to adjust style.
int (*Platform_CreateVkSurface)(ImGuiViewport* vp, ImU64 vk_inst, const void* vk_allocators, ImU64* out_vk_surface); // (Optional) For Renderer to call into Platform code
@@ -1890,8 +1892,8 @@ struct ImGuiPlatformIO
void (*Renderer_CreateWindow)(ImGuiViewport* vp); // Create swap chains, frame buffers etc.
void (*Renderer_DestroyWindow)(ImGuiViewport* vp);
void (*Renderer_SetWindowSize)(ImGuiViewport* vp, ImVec2 size); // Resize swap chain, frame buffers etc.
void (*Renderer_RenderWindow)(ImGuiViewport* vp); // (Optional) Clear targets, Render viewport->DrawData
void (*Renderer_SwapBuffers)(ImGuiViewport* vp); // (Optional) Call Present/SwapBuffers (renderer side)
void (*Renderer_RenderWindow)(ImGuiViewport* vp, void* render_arg); // (Optional) Clear targets, Render viewport->DrawData
void (*Renderer_SwapBuffers)(ImGuiViewport* vp, void* render_arg); // (Optional) Call Present/SwapBuffers (renderer side)
};
// List of viewports to render as platform window (updated by ImGui::UpdatePlatformWindows)