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Examples: SDL,GLFW,Vulkan: The Platform<>Renderer link is handled by SDL/GLFW platforms, both can compile without Vulkan headers, SDL+Vulkan is now on part with GLFW+Vulkan (aka broken the same way!). (#1542)

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This commit is contained in:
omar
2018-03-13 23:16:15 +01:00
parent 98b66a5fc9
commit d0e0b106f0
5 changed files with 67 additions and 27 deletions
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37
examples/imgui_impl_glfw.cpp
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@ -34,6 +34,12 @@
#define GLFW_EXPOSE_NATIVE_WIN32
#include <GLFW/glfw3native.h> // for glfwGetWin32Window
#endif
#ifdef GLFW_HOVERED
#define GLFW_HAS_GLFW_HOVERED 1
#else
#define GLFW_HAS_GLFW_HOVERED 0
#endif
#define GLFW_HAS_VULKAN (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+
// Data
enum GlfwClientApi
@ -437,6 +443,31 @@ static void ImGui_ImplGlfw_SwapBuffers(ImGuiViewport* viewport)
glfwSwapBuffers(data->Window);
}
// Vulkan support (the Vulkan renderer needs to call a platform-side support function to create the surface)
// Avoid including <vulkan.h> so we can build without it
#if GLFW_HAS_VULKAN
#ifndef VULKAN_H_
#define VK_DEFINE_HANDLE(object) typedef struct object##_T* object;
#if defined(__LP64__) || defined(_WIN64) || defined(__x86_64__) || defined(_M_X64) || defined(__ia64) || defined (_M_IA64) || defined(__aarch64__) || defined(__powerpc64__)
#define VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) typedef struct object##_T *object;
#else
#define VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) typedef uint64_t object;
#endif
VK_DEFINE_HANDLE(VkInstance)
VK_DEFINE_NON_DISPATCHABLE_HANDLE(VkSurfaceKHR)
struct VkAllocationCallbacks;
enum VkResult { VK_RESULT_MAX_ENUM = 0x7FFFFFFF };
#endif // VULKAN_H_
extern "C" { extern GLFWAPI VkResult glfwCreateWindowSurface(VkInstance instance, GLFWwindow* window, const VkAllocationCallbacks* allocator, VkSurfaceKHR* surface); }
static int ImGui_ImplGlfw_CreateVkSurface(ImGuiViewport* viewport, ImU64 vk_instance, const void* vk_allocator, ImU64* out_vk_surface)
{
ImGuiPlatformDataGlfw* data = (ImGuiPlatformDataGlfw*)viewport->PlatformUserData;
IM_ASSERT(g_ClientApi == GlfwClientApi_Vulkan);
VkResult err = glfwCreateWindowSurface((VkInstance)vk_instance, data->Window, (const VkAllocationCallbacks*)vk_allocator, (VkSurfaceKHR*)out_vk_surface);
return (int)err;
}
#endif // GLFW_HAS_VULKAN
static void ImGui_ImplGlfw_InitPlatformInterface()
{
// Register platform interface (will be coupled with a renderer interface)
@ -451,9 +482,9 @@ static void ImGui_ImplGlfw_InitPlatformInterface()
io.PlatformInterface.SetWindowTitle = ImGui_ImplGlfw_SetWindowTitle;
io.PlatformInterface.RenderViewport = ImGui_ImplGlfw_RenderViewport;
io.PlatformInterface.SwapBuffers = ImGui_ImplGlfw_SwapBuffers;
// We let the user set up the link to glfwCreateWindowSurface() here, so this binding can work with old GLFW and without Vulkan headers
io.PlatformInterface.CreateVkSurface = NULL;
#if GLFW_HAS_VULKAN
io.PlatformInterface.CreateVkSurface = ImGui_ImplGlfw_CreateVkSurface;
#endif
// Register main window handle
ImGuiViewport* main_viewport = ImGui::GetMainViewport();