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-rw-r--r--examples/web/shaders/shaders_raymarching.c154
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diff --git a/examples/web/shaders/shaders_raymarching.c b/examples/web/shaders/shaders_raymarching.c
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--- a/examples/web/shaders/shaders_raymarching.c
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-/*******************************************************************************************
-*
-* raylib [shaders] example - Raymarching shapes generation
-*
-* NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
-* OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
-*
-* NOTE: Shaders used in this example are #version 330 (OpenGL 3.3), to test this example
-* on OpenGL ES 2.0 platforms (Android, Raspberry Pi, HTML5), use #version 100 shaders
-* raylib comes with shaders ready for both versions, check raylib/shaders install folder
-*
-* This example has been created using raylib 2.0 (www.raylib.com)
-* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
-*
-* Copyright (c) 2018 Ramon Santamaria (@raysan5)
-*
-********************************************************************************************/
-
-#include "raylib.h"
-
-#if defined(PLATFORM_WEB)
- #include <emscripten/emscripten.h>
-#endif
-
-#if defined(PLATFORM_DESKTOP)
- #define GLSL_VERSION 330
-#else // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
- #define GLSL_VERSION 100
-#endif
-
-//----------------------------------------------------------------------------------
-// Global Variables Definition
-//----------------------------------------------------------------------------------
-const int screenWidth = 800;
-const int screenHeight = 450;
-
-// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
-
-Camera camera = { 0 };
-Shader shader = { 0 };
-
-// Shader locations for required uniforms
-int viewEyeLoc = 0;
-int viewCenterLoc = 0;
-int viewUpLoc = 0;
-int deltaTimeLoc = 0;
-int runTimeLoc = 0;
-int resolutionLoc = 0;
-
-float runTime = 0.0f;
-
-//----------------------------------------------------------------------------------
-// Module Functions Declaration
-//----------------------------------------------------------------------------------
-void UpdateDrawFrame(void); // Update and Draw one frame
-
-//----------------------------------------------------------------------------------
-// Program Main Entry Point
-//----------------------------------------------------------------------------------
-int main(void)
-{
- // Initialization
- //--------------------------------------------------------------------------------------
- const int screenWidth = 800;
- const int screenHeight = 450;
-
- InitWindow(screenWidth, screenHeight, "raylib [shaders] example - raymarching shapes");
-
- camera.position = (Vector3){ 2.5f, 2.5f, 3.0f }; // Camera position
- camera.target = (Vector3){ 0.0f, 0.0f, 0.7f }; // Camera looking at point
- camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
- camera.fovy = 65.0f; // Camera field-of-view Y
-
- SetCameraMode(camera, CAMERA_FREE); // Set camera mode
-
- // Load raymarching shader
- // NOTE: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader
- shader = LoadShader(0, TextFormat("resources/shaders/glsl%i/raymarching.fs", GLSL_VERSION));
-
- // Get shader locations for required uniforms
- viewEyeLoc = GetShaderLocation(shader, "viewEye");
- viewCenterLoc = GetShaderLocation(shader, "viewCenter");
- viewUpLoc = GetShaderLocation(shader, "viewUp");
- deltaTimeLoc = GetShaderLocation(shader, "deltaTime");
- runTimeLoc = GetShaderLocation(shader, "runTime");
- resolutionLoc = GetShaderLocation(shader, "resolution");
-
- float resolution[2] = { screenWidth, screenHeight };
- SetShaderValue(shader, resolutionLoc, resolution, SHADER_UNIFORM_VEC2);
-
-#if defined(PLATFORM_WEB)
- emscripten_set_main_loop(UpdateDrawFrame, 60, 1);
-#else
- SetTargetFPS(60); // Set our game to run at 60 frames-per-second
- //--------------------------------------------------------------------------------------
-
- // Main game loop
- while (!WindowShouldClose()) // Detect window close button or ESC key
- {
- UpdateDrawFrame();
- }
-#endif
-
- // De-Initialization
- //--------------------------------------------------------------------------------------
- UnloadShader(shader); // Unload shader
-
- CloseWindow(); // Close window and OpenGL context
- //--------------------------------------------------------------------------------------
-
- return 0;
-}
-
-//----------------------------------------------------------------------------------
-// Module Functions Definition
-//----------------------------------------------------------------------------------
-void UpdateDrawFrame(void)
-{
- // Update
- //----------------------------------------------------------------------------------
- UpdateCamera(&camera); // Update camera
-
- float cameraPos[3] = { camera.position.x, camera.position.y, camera.position.z };
- float cameraTarget[3] = { camera.target.x, camera.target.y, camera.target.z };
- float cameraUp[3] = { camera.up.x, camera.up.y, camera.up.z };
-
- float deltaTime = GetFrameTime();
- runTime += deltaTime;
-
- // Set shader required uniform values
- SetShaderValue(shader, viewEyeLoc, cameraPos, SHADER_UNIFORM_VEC3);
- SetShaderValue(shader, viewCenterLoc, cameraTarget, SHADER_UNIFORM_VEC3);
- SetShaderValue(shader, viewUpLoc, cameraUp, SHADER_UNIFORM_VEC3);
- SetShaderValue(shader, deltaTimeLoc, &deltaTime, SHADER_UNIFORM_FLOAT);
- SetShaderValue(shader, runTimeLoc, &runTime, SHADER_UNIFORM_FLOAT);
- //----------------------------------------------------------------------------------
-
- // Draw
- //----------------------------------------------------------------------------------
- BeginDrawing();
-
- ClearBackground(RAYWHITE);
-
- // We only draw a white full-screen rectangle,
- // frame is generated in shader using raymarching
- BeginShaderMode(shader);
- DrawRectangle(0, 0, screenWidth, screenHeight, WHITE);
- EndShaderMode();
-
- DrawText("(c) Raymarching shader by IƱigo Quilez. MIT License.", screenWidth - 280, screenHeight - 20, 10, GRAY);
-
- EndDrawing();
- //----------------------------------------------------------------------------------
-}