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58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
// By Emil Ernerfeldt 2018
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// LICENSE:
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// This software is dual-licensed to the public domain and under the following
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// license: you are granted a perpetual, irrevocable license to copy, modify,
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// publish, and distribute this file as you see fit.
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// WHAT:
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// This is a software renderer for Dear ImGui.
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// It is decently fast, but has a lot of room for optimization.
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// The goal was to get something fast and decently accurate in not too many lines of code.
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// LIMITATIONS:
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// * It is not pixel-perfect, but it is good enough for must use cases.
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// * It does not support painting with any other texture than the default font texture.
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#pragma once
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#include "imgui.h" // IMGUI_IMPL_API
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#ifndef IMGUI_DISABLE
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#include <cstdint>
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struct SDL_Window;
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struct ImDrawData;
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struct SWTexture
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{
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uint32_t* pixels;
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int width;
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int height;
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bool managed, isAlpha;
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SWTexture(uint32_t* pix, int w, int h, bool a=false):
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pixels(pix),
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width(w),
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height(h),
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managed(false),
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isAlpha(a) {}
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SWTexture(int w, int h, bool a=false):
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width(w),
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height(h),
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managed(true),
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isAlpha(a) {
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pixels=new uint32_t[width*height];
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}
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~SWTexture() {
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if (managed) delete[] pixels;
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}
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};
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IMGUI_IMPL_API bool ImGui_ImplSW_Init(SDL_Window* win);
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IMGUI_IMPL_API void ImGui_ImplSW_Shutdown();
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IMGUI_IMPL_API bool ImGui_ImplSW_NewFrame();
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IMGUI_IMPL_API void ImGui_ImplSW_RenderDrawData(ImDrawData* draw_data);
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// Called by Init/NewFrame/Shutdown
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IMGUI_IMPL_API bool ImGui_ImplSW_CreateFontsTexture();
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IMGUI_IMPL_API void ImGui_ImplSW_DestroyFontsTexture();
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IMGUI_IMPL_API bool ImGui_ImplSW_CreateDeviceObjects();
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IMGUI_IMPL_API void ImGui_ImplSW_DestroyDeviceObjects();
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#endif // #ifndef IMGUI_DISABLE
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