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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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19
backends/imgui_impl_opengl3.cpp
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@ -191,9 +191,10 @@ struct ImGui_ImplOpenGL3_Data
// 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_ImplOpenGL3_Data* ImGui_ImplOpenGL3_CreateBackendData() { return IM_NEW(ImGui_ImplOpenGL3_Data)(); }
static ImGui_ImplOpenGL3_Data* ImGui_ImplOpenGL3_GetBackendData() { return (ImGui_ImplOpenGL3_Data*)ImGui::GetIO().BackendRendererUserData; }
static void ImGui_ImplOpenGL3_DestroyBackendData() { IM_DELETE(ImGui_ImplOpenGL3_GetBackendData()); }
static ImGui_ImplOpenGL3_Data* ImGui_ImplOpenGL3_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplOpenGL3_Data*)ImGui::GetIO().BackendRendererUserData : NULL;
}
// Functions
bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
@ -201,7 +202,10 @@ bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.BackendRendererUserData == NULL && "Already initialized a renderer backend!");
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_CreateBackendData();
// Setup backend capabilities flags
ImGui_ImplOpenGL3_Data* bd = IM_NEW(ImGui_ImplOpenGL3_Data)();;
io.BackendRendererUserData = (void*)bd;
io.BackendRendererName = "imgui_impl_opengl3";
// Query for GL version (e.g. 320 for GL 3.2)
#if !defined(IMGUI_IMPL_OPENGL_ES2)
@ -220,9 +224,6 @@ bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
bd->GlVersion = 200; // GLES 2
#endif
// Setup backend capabilities flags
io.BackendRendererUserData = (void*)bd;
io.BackendRendererName = "imgui_impl_opengl3";
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
if (bd->GlVersion >= 320)
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
@ -296,10 +297,12 @@ bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
void ImGui_ImplOpenGL3_Shutdown()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
ImGui_ImplOpenGL3_DestroyDeviceObjects();
io.BackendRendererName = NULL;
io.BackendRendererUserData = NULL;
ImGui_ImplOpenGL3_DestroyBackendData();
IM_DELETE(bd);
}
void ImGui_ImplOpenGL3_NewFrame()