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Backends: Cleanup, removed unnecessary create/destroy wrappers. Fix allegro5 backend + use same code as other backend.

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+ Update gallery links (#4280)
This commit is contained in:
ocornut
2021-06-30 15:22:15 +02:00
parent 6792e1a3e0
commit cf2daf353e
13 changed files with 129 additions and 121 deletions
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34
backends/imgui_impl_dx12.cpp
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@ -74,25 +74,19 @@ struct ImGui_ImplDX12_Data
ImGui_ImplDX12_Data() { memset(this, 0, sizeof(*this)); frameIndex = UINT_MAX; }
};
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
static ImGui_ImplDX12_Data* ImGui_ImplDX12_CreateBackendData() { return IM_NEW(ImGui_ImplDX12_Data)(); }
static ImGui_ImplDX12_Data* ImGui_ImplDX12_GetBackendData() { return (ImGui_ImplDX12_Data*)ImGui::GetIO().BackendRendererUserData; }
static void ImGui_ImplDX12_DestroyBackendData() { IM_DELETE(ImGui_ImplDX12_GetBackendData()); }
template<typename T>
static void SafeRelease(T*& res)
{
if (res)
res->Release();
res = NULL;
}
struct VERTEX_CONSTANT_BUFFER
{
float mvp[4][4];
};
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
static ImGui_ImplDX12_Data* ImGui_ImplDX12_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplDX12_Data*)ImGui::GetIO().BackendRendererUserData : NULL;
}
// Functions
static void ImGui_ImplDX12_SetupRenderState(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx, ImGui_ImplDX12_RenderBuffers* fr)
{
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
@ -150,6 +144,14 @@ static void ImGui_ImplDX12_SetupRenderState(ImDrawData* draw_data, ID3D12Graphic
ctx->OMSetBlendFactor(blend_factor);
}
template<typename T>
static inline void SafeRelease(T*& res)
{
if (res)
res->Release();
res = NULL;
}
// Render function
void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx)
{
@ -691,7 +693,7 @@ bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FO
IM_ASSERT(io.BackendRendererUserData == NULL && "Already initialized a renderer backend!");
// Setup backend capabilities flags
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_CreateBackendData();
ImGui_ImplDX12_Data* bd = IM_NEW(ImGui_ImplDX12_Data)();
io.BackendRendererUserData = (void*)bd;
io.BackendRendererName = "imgui_impl_dx12";
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
@ -727,7 +729,7 @@ void ImGui_ImplDX12_Shutdown()
delete[] bd->pFrameResources;
io.BackendRendererName = NULL;
io.BackendRendererUserData = NULL;
ImGui_ImplDX12_DestroyBackendData();
IM_DELETE(bd);
}
void ImGui_ImplDX12_NewFrame()