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/*******************************************************************************************
*
* raylib [core] example - VR Simulator (Oculus Rift CV1 parameters)
*
* This example has been created using raylib 1.7 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2017 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_DESKTOP)
#define GLSL_VERSION 330
#else // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
#define GLSL_VERSION 100
#endif
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
// NOTE: screenWidth/screenHeight should match VR device aspect ratio
SetConfigFlags(FLAG_MSAA_4X_HINT);
InitWindow(screenWidth, screenHeight, "raylib [core] example - vr simulator");
// Init VR simulator (Oculus Rift CV1 parameters)
InitVrSimulator();
VrDeviceInfo hmd = { 0 }; // VR device parameters (head-mounted-device)
// Oculus Rift CV1 parameters for simulator
hmd.hResolution = 2160; // HMD horizontal resolution in pixels
hmd.vResolution = 1200; // HMD vertical resolution in pixels
hmd.hScreenSize = 0.133793f; // HMD horizontal size in meters
hmd.vScreenSize = 0.0669f; // HMD vertical size in meters
hmd.vScreenCenter = 0.04678f; // HMD screen center in meters
hmd.eyeToScreenDistance = 0.041f; // HMD distance between eye and display in meters
hmd.lensSeparationDistance = 0.07f; // HMD lens separation distance in meters
hmd.interpupillaryDistance = 0.07f; // HMD IPD (distance between pupils) in meters
// NOTE: CV1 uses a Fresnel-hybrid-asymmetric lenses with specific distortion compute shaders.
// Following parameters are an approximation to distortion stereo rendering but results differ from actual device.
hmd.lensDistortionValues[0] = 1.0f; // HMD lens distortion constant parameter 0
hmd.lensDistortionValues[1] = 0.22f; // HMD lens distortion constant parameter 1
hmd.lensDistortionValues[2] = 0.24f; // HMD lens distortion constant parameter 2
hmd.lensDistortionValues[3] = 0.0f; // HMD lens distortion constant parameter 3
hmd.chromaAbCorrection[0] = 0.996f; // HMD chromatic aberration correction parameter 0
hmd.chromaAbCorrection[1] = -0.004f; // HMD chromatic aberration correction parameter 1
hmd.chromaAbCorrection[2] = 1.014f; // HMD chromatic aberration correction parameter 2
hmd.chromaAbCorrection[3] = 0.0f; // HMD chromatic aberration correction parameter 3
// Distortion shader (uses device lens distortion and chroma)
Shader distortion = LoadShader(0, FormatText("resources/distortion%i.fs", GLSL_VERSION));
SetVrConfiguration(hmd, distortion); // Set Vr device parameters for stereo rendering
// Define the camera to look into our 3d world
Camera camera = { 0 };
camera.position = (Vector3){ 5.0f, 2.0f, 5.0f }; // Camera position
camera.target = (Vector3){ 0.0f, 2.0f, 0.0f }; // Camera looking at point
camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
camera.fovy = 60.0f; // Camera field-of-view Y
camera.type = CAMERA_PERSPECTIVE; // Camera type
Vector3 cubePosition = { 0.0f, 0.0f, 0.0f };
SetCameraMode(camera, CAMERA_FIRST_PERSON); // Set first person camera mode
SetTargetFPS(90); // Set our game to run at 90 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
UpdateCamera(&camera); // Update camera (simulator mode)
if (IsKeyPressed(KEY_SPACE)) ToggleVrMode(); // Toggle VR mode
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
BeginVrDrawing();
BeginMode3D(camera);
DrawCube(cubePosition, 2.0f, 2.0f, 2.0f, RED);
DrawCubeWires(cubePosition, 2.0f, 2.0f, 2.0f, MAROON);
DrawGrid(40, 1.0f);
EndMode3D();
EndVrDrawing();
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadShader(distortion); // Unload distortion shader
CloseVrSimulator(); // Close VR simulator
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
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