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Examples: Metal: Wrap main event loop body in an @autoreleasepool block to ensure allocations get freed even if underlying system event loop gets paused due to app nap (#2910, #2917)
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Max Thrun
omar
parent
8342e5b91a
commit
6d9a54a904
@ -37,6 +37,8 @@ Other Changes:
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- Misc: Added ImGuiMouseCursor_NotAllowed enum so it can be used by more shared widgets. [@rokups]
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- Backends: GLFW, SDL, Win32, OSX, Allegro: Added support for ImGuiMouseCursor_NotAllowed. [@rokups]
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- Backends: GLFW: Added support for the missing mouse cursors newly added in GLFW 3.4+. [@rokups]
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- Examples: Metal: Wrapped main loop in @autoreleasepool block to ensure allocations get freed
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even if underlying system event loop gets paused due to app nap (#2910, #2917). [@bear24rw]
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-----------------------------------------------------------------------
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@ -82,77 +82,80 @@ int main(int, char**)
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// Main loop
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while (!glfwWindowShouldClose(window))
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{
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// Poll and handle events (inputs, window resize, etc.)
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// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
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// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
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// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
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// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
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glfwPollEvents();
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int width, height;
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glfwGetFramebufferSize(window, &width, &height);
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layer.drawableSize = CGSizeMake(width, height);
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id<CAMetalDrawable> drawable = [layer nextDrawable];
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id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
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renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
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renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
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renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
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renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
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id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
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[renderEncoder pushDebugGroup:@"ImGui demo"];
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// Start the Dear ImGui frame
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ImGui_ImplMetal_NewFrame(renderPassDescriptor);
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ImGui_ImplGlfw_NewFrame();
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ImGui::NewFrame();
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// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
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if (show_demo_window)
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ImGui::ShowDemoWindow(&show_demo_window);
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// 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
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@autoreleasepool
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{
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static float f = 0.0f;
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static int counter = 0;
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// Poll and handle events (inputs, window resize, etc.)
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// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
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// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
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// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
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// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
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glfwPollEvents();
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ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
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int width, height;
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glfwGetFramebufferSize(window, &width, &height);
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layer.drawableSize = CGSizeMake(width, height);
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id<CAMetalDrawable> drawable = [layer nextDrawable];
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ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
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ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
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ImGui::Checkbox("Another Window", &show_another_window);
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id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
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renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
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renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
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renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
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renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
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id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
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[renderEncoder pushDebugGroup:@"ImGui demo"];
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ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
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ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
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// Start the Dear ImGui frame
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ImGui_ImplMetal_NewFrame(renderPassDescriptor);
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ImGui_ImplGlfw_NewFrame();
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ImGui::NewFrame();
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if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
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counter++;
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ImGui::SameLine();
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ImGui::Text("counter = %d", counter);
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// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
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if (show_demo_window)
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ImGui::ShowDemoWindow(&show_demo_window);
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ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
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ImGui::End();
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// 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
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{
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static float f = 0.0f;
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static int counter = 0;
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ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
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ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
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ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
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ImGui::Checkbox("Another Window", &show_another_window);
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ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
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ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
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if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
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counter++;
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ImGui::SameLine();
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ImGui::Text("counter = %d", counter);
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ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
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ImGui::End();
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}
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// 3. Show another simple window.
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if (show_another_window)
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{
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ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
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ImGui::Text("Hello from another window!");
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if (ImGui::Button("Close Me"))
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show_another_window = false;
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ImGui::End();
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}
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// Rendering
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ImGui::Render();
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ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
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[renderEncoder popDebugGroup];
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[renderEncoder endEncoding];
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[commandBuffer presentDrawable:drawable];
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[commandBuffer commit];
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}
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// 3. Show another simple window.
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if (show_another_window)
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{
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ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
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ImGui::Text("Hello from another window!");
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if (ImGui::Button("Close Me"))
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show_another_window = false;
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ImGui::End();
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}
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// Rendering
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ImGui::Render();
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ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
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[renderEncoder popDebugGroup];
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[renderEncoder endEncoding];
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[commandBuffer presentDrawable:drawable];
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[commandBuffer commit];
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}
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// Cleanup
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