Transitioning text editor to SDL
This commit is contained in:
Krzosa Karol
155
src/platform/platform.cpp
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155
src/platform/platform.cpp
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#define BASIC_IMPL
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#include "basic/basic.h"
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#include "basic/filesystem.h"
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#include "SDL3/SDL.h"
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#include "external/glad/glad.h"
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#include "external/stb_truetype.h"
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#include "external/stb_truetype.c"
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#include "basic/math_int.cpp"
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#include "basic/math.cpp"
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#include "font.cpp"
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#include "render_opengl.cpp"
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bool AppIsRunning = true;
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bool WaitForEvents = false;
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int64_t FrameID;
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void ProcessSDLEvent(SDL_Event *event) {
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switch (event->type) {
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case SDL_EVENT_QUIT: AppIsRunning = false; return;
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case SDL_EVENT_KEY_DOWN: {
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SDL_KeyboardEvent &key = event->key;
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bool shift = key.mod & SDL_KMOD_SHIFT;
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bool ctrl = key.mod & SDL_KMOD_CTRL;
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bool alt = key.mod & SDL_KMOD_ALT;
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bool super = key.mod & SDL_KMOD_GUI;
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if (key.key == SDLK_F5) {
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AppIsRunning = false;
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return;
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}
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} break;
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case SDL_EVENT_KEY_UP: {
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SDL_KeyboardEvent &key = event->key;
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bool shift = key.mod & SDL_KMOD_SHIFT;
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bool ctrl = key.mod & SDL_KMOD_CTRL;
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bool alt = key.mod & SDL_KMOD_ALT;
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bool super = key.mod & SDL_KMOD_GUI;
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} break;
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case SDL_EVENT_TEXT_INPUT: {
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} break;
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case SDL_EVENT_MOUSE_MOTION: {
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} break;
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case SDL_EVENT_MOUSE_BUTTON_DOWN: {
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} break;
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case SDL_EVENT_MOUSE_BUTTON_UP: {
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} break;
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case SDL_EVENT_MOUSE_WHEEL: {
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} break;
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}
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}
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void GLDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *user) {
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printf("%s", message);
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if (severity == GL_DEBUG_SEVERITY_HIGH || severity == GL_DEBUG_SEVERITY_MEDIUM) {
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SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "OpenGL error", message, NULL);
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}
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}
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#if _WIN32
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int WinMain(void *hInstance, void *hPrevInstance, const char *lpCmdLine, int nShowCmd)
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#else
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int main()
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#endif
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{
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InitScratch();
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if (SDL_Init(SDL_INIT_VIDEO) == -1) {
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SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Couldn't initialize SDL!", SDL_GetError(), NULL);
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return 1;
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}
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const char *glsl_version = "#version 450";
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 5);
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
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SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
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Uint32 window_flags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_HIDDEN | SDL_WINDOW_HIGH_PIXEL_DENSITY;
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SDL_Window *window = SDL_CreateWindow("Text editor", 1280, 720, window_flags);
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if (window == NULL) {
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SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Couldn't create window!", SDL_GetError(), NULL);
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return 1;
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}
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SDL_GLContext gl_context = SDL_GL_CreateContext(window);
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SDL_GL_MakeCurrent(window, gl_context);
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SDL_GL_SetSwapInterval(1); // Enable vsync
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SDL_ShowWindow(window);
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if (!gladLoadGLLoader((GLADloadproc)SDL_GL_GetProcAddress)) {
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SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Couldn't load opengl!", SDL_GetError(), NULL);
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return 1;
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}
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SDL_GL_SetSwapInterval(1); // vsync
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glDebugMessageCallback(&GLDebugCallback, NULL);
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glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
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{
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Scratch scratch;
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Atlas atlas = CreateAtlas(scratch, {1024, 1024});
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MainFont = CreateFont(&atlas, 16, "C:\\Windows\\Fonts\\consola.ttf");
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{
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glCreateTextures(GL_TEXTURE_2D, 1, &atlas.texture_id);
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glTextureParameteri(atlas.texture_id, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTextureParameteri(atlas.texture_id, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTextureParameteri(atlas.texture_id, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTextureParameteri(atlas.texture_id, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTextureStorage2D(atlas.texture_id, 1, GL_R8, (GLsizei)atlas.size.x, (GLsizei)atlas.size.y);
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glTextureSubImage2D(atlas.texture_id, 0, 0, 0, (GLsizei)atlas.size.x, (GLsizei)atlas.size.y, GL_RED, GL_UNSIGNED_BYTE, atlas.bitmap);
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}
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MainFont.texture_id = atlas.texture_id;
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}
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InitRender();
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while (AppIsRunning) {
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FrameID += 1;
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int window_x, window_y;
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SDL_GetWindowSize(window, &window_x, &window_y);
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Vec2 window_size = {(float)window_x, (float)window_y};
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BeginFrameRender(window_size);
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SDL_Event event;
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if (WaitForEvents) {
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SDL_WaitEvent(&event);
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ProcessSDLEvent(&event);
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}
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while (SDL_PollEvent(&event)) {
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ProcessSDLEvent(&event);
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}
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{
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Scratch scratch;
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uint64_t ms = SDL_GetTicks();
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double time = (double)ms / 1000.0;
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String string = Format(scratch, "%d %f %f", (int)FrameID, time, (time / (double)FrameID));
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DrawString(&MainFont, ToString16(scratch, string), {0, 0}, {255, 0, 0, 255});
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}
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EndFrameRender({0, 0, 0, 1});
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SDL_GL_SwapWindow(window);
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}
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SDL_DestroyWindow(window);
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SDL_Quit();
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return 0;
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}
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