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93 lines
3.7 KiB
93 lines
3.7 KiB
/*******************************************************************************************
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*
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* raylib [core] example - Image loading and texture creation (adapted for HTML5 platform)
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*
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* NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
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*
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* This example has been created using raylib 1.3 (www.raylib.com)
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* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
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*
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* Copyright (c) 2015 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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#if defined(PLATFORM_WEB)
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#include <emscripten/emscripten.h>
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#endif
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//----------------------------------------------------------------------------------
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// Global Variables Definition
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//----------------------------------------------------------------------------------
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int screenWidth = 800;
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int screenHeight = 450;
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// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
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Texture2D texture; // Image converted to texture, GPU memory (VRAM)
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//----------------------------------------------------------------------------------
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// Module Functions Declaration
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//----------------------------------------------------------------------------------
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void UpdateDrawFrame(void); // Update and Draw one frame
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//----------------------------------------------------------------------------------
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// Main Enry Point
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//----------------------------------------------------------------------------------
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int main()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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InitWindow(screenWidth, screenHeight, "raylib [textures] example - image loading");
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Image image = LoadImage("resources/raylib_logo.png"); // Loaded in CPU memory (RAM)
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texture = LoadTextureFromImage(image); // Image converted to texture, GPU memory (VRAM)
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UnloadImage(image); // Once image has been converted to texture and uploaded to VRAM, it can be unloaded from RAM
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#if defined(PLATFORM_WEB)
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emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
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#else
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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//--------------------------------------------------------------------------------------
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// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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UpdateDrawFrame();
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}
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#endif
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// De-Initialization
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//--------------------------------------------------------------------------------------
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UnloadTexture(texture); // Texture unloading
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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//----------------------------------------------------------------------------------
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// Module Functions Definition
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//----------------------------------------------------------------------------------
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void UpdateDrawFrame(void)
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{
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// Update
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//----------------------------------------------------------------------------------
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// TODO: Update your variables here
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(RAYWHITE);
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DrawTexture(texture, screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2, WHITE);
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DrawText("this IS a texture loaded from an image!", 300, 370, 10, GRAY);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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