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+/*******************************************************************************************
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+*
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+* raylib [core] example - Oculus Rift CV1
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+*
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+* Compile example using:
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+* gcc -o $(NAME_PART).exe $(FILE_NAME) -I..\src\external -I..\src\external\OculusSDK\LibOVR\Include /
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+* -L. -L..\src\external\OculusSDK\LibOVR -lLibOVRRT32_1 -lraylib -lglfw3 -lopengl32 -lgdi32 -std=c99 /
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+* -Wl,-allow-multiple-definition
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+*
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+* #define SUPPORT_OCULUS_RIFT_CV1 / RLGL_OCULUS_SUPPORT
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+* Enable Oculus Rift CV1 functionality
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+*
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+* This example has been created using raylib 1.5 (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) 2016 Ramon Santamaria (@raysan5)
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+*
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+********************************************************************************************/
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+
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+#include "raylib.h"
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+
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+#include "glad.h" // Required for: OpenGL types and functions declarations
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+#include "raymath.h" // Required for: Vector3, Quaternion and Matrix functionality
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+
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+#include <string.h> // Required for: memset()
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+#include <stdlib.h> // Required for: exit()
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+#include <stdio.h> // required for: vfprintf()
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+#include <stdarg.h> // Required for: va_list, va_start(), vfprintf(), va_end()
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+
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+#define RLGL_OCULUS_SUPPORT // Enable Oculus Rift code
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+#if defined(RLGL_OCULUS_SUPPORT)
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+ #include "OVR_CAPI_GL.h" // Oculus SDK for OpenGL
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+#endif
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+
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+//----------------------------------------------------------------------------------
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+// Defines and Macros
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+//----------------------------------------------------------------------------------
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+// ...
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+
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+//----------------------------------------------------------------------------------
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+// Types and Structures Definition
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+//----------------------------------------------------------------------------------
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+
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+// TraceLog message types
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+typedef enum { INFO = 0, ERROR, WARNING, DEBUG, OTHER } TraceLogType;
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+
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+#if defined(RLGL_OCULUS_SUPPORT)
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+// Oculus buffer type
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+typedef struct OculusBuffer {
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+ ovrTextureSwapChain textureChain;
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+ GLuint depthId;
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+ GLuint fboId;
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+ int width;
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+ int height;
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+} OculusBuffer;
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+
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+// Oculus mirror texture type
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+typedef struct OculusMirror {
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+ ovrMirrorTexture texture;
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+ GLuint fboId;
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+ int width;
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+ int height;
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+} OculusMirror;
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+
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+// Oculus layer type
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+typedef struct OculusLayer {
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+ ovrViewScaleDesc viewScaleDesc;
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+ ovrLayerEyeFov eyeLayer; // layer 0
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+ //ovrLayerQuad quadLayer; // TODO: layer 1: '2D' quad for GUI
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+ Matrix eyeProjections[2];
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+ int width;
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+ int height;
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+} OculusLayer;
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+#endif
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+
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+//----------------------------------------------------------------------------------
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+// Global Variables Definition
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+//----------------------------------------------------------------------------------
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+#if defined(RLGL_OCULUS_SUPPORT)
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+// OVR device variables
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+static ovrSession session; // Oculus session (pointer to ovrHmdStruct)
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+static ovrHmdDesc hmdDesc; // Oculus device descriptor parameters
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+static ovrGraphicsLuid luid; // Oculus locally unique identifier for the program (64 bit)
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+static OculusLayer layer; // Oculus drawing layer (similar to photoshop)
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+static OculusBuffer buffer; // Oculus internal buffers (texture chain and fbo)
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+static OculusMirror mirror; // Oculus mirror texture and fbo
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+static unsigned int frameIndex = 0; // Oculus frames counter, used to discard frames from chain
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+#endif
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+
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+//----------------------------------------------------------------------------------
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+// Module specific Functions Declaration
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+//----------------------------------------------------------------------------------
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+#if defined(RLGL_OCULUS_SUPPORT)
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+static bool InitOculusDevice(void); // Initialize Oculus device (returns true if success)
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+static void CloseOculusDevice(void); // Close Oculus device
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+static void UpdateOculusTracking(Camera *camera); // Update Oculus head position-orientation tracking
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+static void BeginOculusDrawing(void); // Setup Oculus buffers for drawing
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+static void EndOculusDrawing(void); // Finish Oculus drawing and blit framebuffer to mirror
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+
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+static OculusBuffer LoadOculusBuffer(ovrSession session, int width, int height); // Load Oculus required buffers
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+static void UnloadOculusBuffer(ovrSession session, OculusBuffer buffer); // Unload texture required buffers
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+static OculusMirror LoadOculusMirror(ovrSession session, int width, int height); // Load Oculus mirror buffers
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+static void UnloadOculusMirror(ovrSession session, OculusMirror mirror); // Unload Oculus mirror buffers
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+static void BlitOculusMirror(ovrSession session, OculusMirror mirror); // Copy Oculus screen buffer to mirror texture
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+static OculusLayer InitOculusLayer(ovrSession session); // Init Oculus layer (similar to photoshop)
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+static Matrix FromOvrMatrix(ovrMatrix4f ovrM); // Convert from Oculus ovrMatrix4f struct to raymath Matrix struct
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+#endif
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+
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+static void TraceLog(int msgType, const char *text, ...);
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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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+ int screenWidth = 1080;
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+ int screenHeight = 600;
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+
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+ // NOTE: screenWidth/screenHeight should match VR device aspect ratio
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+
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+ InitWindow(screenWidth, screenHeight, "raylib [core] example - oculus rift");
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+
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+ bool vrDeviceReady = InitOculusDevice(); // Init VR device Oculus Rift CV1
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+
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+ if (!vrDeviceReady) InitVrSimulator(HMD_OCULUS_RIFT_CV1); // Init VR simulator if device fails
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+
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+ // Define the camera to look into our 3d world
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+ Camera camera;
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+ camera.position = (Vector3){ 5.0f, 2.0f, 5.0f }; // Camera position
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+ camera.target = (Vector3){ 0.0f, 2.0f, 0.0f }; // Camera looking at point
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+ camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
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+ camera.fovy = 60.0f; // Camera field-of-view Y
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+
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+ Vector3 cubePosition = { 0.0f, 0.0f, 0.0f };
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+
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+ SetCameraMode(camera, CAMERA_FIRST_PERSON); // Set first person camera mode
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+
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+ SetTargetFPS(90); // Set our game to run at 90 frames-per-second
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+ //--------------------------------------------------------------------------------------
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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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+ // Update
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+ //----------------------------------------------------------------------------------
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+ if (!vrDeviceReady) UpdateCamera(&camera); // Update camera (simulator mode)
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+ else UpdateOculusTracking(&camera); // Update camera with device tracking data
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+
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+ if (IsKeyPressed(KEY_SPACE)) ToggleVrMode(); // Toggle VR mode
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+ //----------------------------------------------------------------------------------
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+
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+ // Draw
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+ //----------------------------------------------------------------------------------
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+ BeginDrawing();
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+
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+ ClearBackground(RAYWHITE);
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+
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+ if (vrDeviceReady) BeginOculusDrawing();
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+ else BeginVrDrawing();
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+
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+ Begin3dMode(camera);
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+
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+ DrawCube(cubePosition, 2.0f, 2.0f, 2.0f, RED);
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+ DrawCubeWires(cubePosition, 2.0f, 2.0f, 2.0f, MAROON);
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+
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+ DrawGrid(40, 1.0f);
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+
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+ End3dMode();
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+
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+ if (vrDeviceReady) EndOculusDrawing();
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+ else EndVrDrawing();
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+
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+ DrawFPS(10, 10);
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+
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+ EndDrawing();
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+ //----------------------------------------------------------------------------------
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+ }
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+
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+ // De-Initialization
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+ //--------------------------------------------------------------------------------------
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+ if (vrDeviceReady) CloseOculusDevice();
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+ else CloseVrSimulator();
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+
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+ CloseWindow(); // Close window and OpenGL context
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+ //--------------------------------------------------------------------------------------
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+
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+ return 0;
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+}
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+
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+//----------------------------------------------------------------------------------
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+// Module specific Functions Definition
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+//----------------------------------------------------------------------------------
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+
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+#if defined(RLGL_OCULUS_SUPPORT)
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+// Set internal projection and modelview matrix depending on eyes tracking data
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+static void SetStereoView(int eye, Matrix matProjection, Matrix matModelView)
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+{
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+ Matrix eyeProjection = matProjection;
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+ Matrix eyeModelView = matModelView;
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+
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+ glViewport(layer.eyeLayer.Viewport[eye].Pos.x, layer.eyeLayer.Viewport[eye].Pos.y,
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+ layer.eyeLayer.Viewport[eye].Size.w, layer.eyeLayer.Viewport[eye].Size.h);
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+
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+ Quaternion eyeRenderPose = (Quaternion){ layer.eyeLayer.RenderPose[eye].Orientation.x,
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+ layer.eyeLayer.RenderPose[eye].Orientation.y,
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+ layer.eyeLayer.RenderPose[eye].Orientation.z,
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+ layer.eyeLayer.RenderPose[eye].Orientation.w };
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+ QuaternionInvert(&eyeRenderPose);
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+ Matrix eyeOrientation = QuaternionToMatrix(eyeRenderPose);
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+ Matrix eyeTranslation = MatrixTranslate(-layer.eyeLayer.RenderPose[eye].Position.x,
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+ -layer.eyeLayer.RenderPose[eye].Position.y,
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+ -layer.eyeLayer.RenderPose[eye].Position.z);
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+
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+ Matrix eyeView = MatrixMultiply(eyeTranslation, eyeOrientation); // Matrix containing eye-head movement
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+ eyeModelView = MatrixMultiply(matModelView, eyeView); // Combine internal camera matrix (modelview) wih eye-head movement
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+
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+ eyeProjection = layer.eyeProjections[eye];
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+}
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+
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+// Initialize Oculus device (returns true if success)
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+static bool InitOculusDevice(void)
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+{
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+ bool oculusReady = false;
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+
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+ ovrResult result = ovr_Initialize(NULL);
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+
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+ if (OVR_FAILURE(result)) TraceLog(WARNING, "OVR: Could not initialize Oculus device");
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+ else
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+ {
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+ result = ovr_Create(&session, &luid);
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+ if (OVR_FAILURE(result))
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+ {
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+ TraceLog(WARNING, "OVR: Could not create Oculus session");
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+ ovr_Shutdown();
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+ }
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+ else
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+ {
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+ hmdDesc = ovr_GetHmdDesc(session);
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+
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+ TraceLog(INFO, "OVR: Product Name: %s", hmdDesc.ProductName);
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+ TraceLog(INFO, "OVR: Manufacturer: %s", hmdDesc.Manufacturer);
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+ TraceLog(INFO, "OVR: Product ID: %i", hmdDesc.ProductId);
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+ TraceLog(INFO, "OVR: Product Type: %i", hmdDesc.Type);
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+ //TraceLog(INFO, "OVR: Serial Number: %s", hmdDesc.SerialNumber);
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+ TraceLog(INFO, "OVR: Resolution: %ix%i", hmdDesc.Resolution.w, hmdDesc.Resolution.h);
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+
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+ // NOTE: Oculus mirror is set to defined screenWidth and screenHeight...
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+ // ...ideally, it should be (hmdDesc.Resolution.w/2, hmdDesc.Resolution.h/2)
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+
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+ // Initialize Oculus Buffers
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+ layer = InitOculusLayer(session);
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+ buffer = LoadOculusBuffer(session, layer.width, layer.height);
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+ mirror = LoadOculusMirror(session, hmdDesc.Resolution.w/2, hmdDesc.Resolution.h/2); // NOTE: hardcoded...
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+ layer.eyeLayer.ColorTexture[0] = buffer.textureChain; //SetOculusLayerTexture(eyeLayer, buffer.textureChain);
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+
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+ // Recenter OVR tracking origin
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+ ovr_RecenterTrackingOrigin(session);
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+
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+ oculusReady = true;
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+ }
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+ }
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+
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+ return oculusReady;
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+}
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+
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+// Close Oculus device (and unload buffers)
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+static void CloseOculusDevice(void)
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+{
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+ UnloadOculusMirror(session, mirror); // Unload Oculus mirror buffer
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+ UnloadOculusBuffer(session, buffer); // Unload Oculus texture buffers
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+
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+ ovr_Destroy(session); // Free Oculus session data
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+ ovr_Shutdown(); // Close Oculus device connection
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+}
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+
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+// Update Oculus head position-orientation tracking
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+static void UpdateOculusTracking(Camera *camera)
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+{
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+ frameIndex++;
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+
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+ ovrPosef eyePoses[2];
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+ ovr_GetEyePoses(session, frameIndex, ovrTrue, layer.viewScaleDesc.HmdToEyeOffset, eyePoses, &layer.eyeLayer.SensorSampleTime);
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+
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+ layer.eyeLayer.RenderPose[0] = eyePoses[0];
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+ layer.eyeLayer.RenderPose[1] = eyePoses[1];
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+
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+ // TODO: Update external camera with eyePoses data (position, orientation)
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+ // NOTE: We can simplify to simple camera if we consider IPD and HMD device configuration again later
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+ // it will be useful for the user to draw, lets say, billboards oriented to camera
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+
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+ // Get session status information
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+ ovrSessionStatus sessionStatus;
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+ ovr_GetSessionStatus(session, &sessionStatus);
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+
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+ if (sessionStatus.ShouldQuit) TraceLog(WARNING, "OVR: Session should quit...");
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+ if (sessionStatus.ShouldRecenter) ovr_RecenterTrackingOrigin(session);
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+ //if (sessionStatus.HmdPresent) // HMD is present.
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+ //if (sessionStatus.DisplayLost) // HMD was unplugged or the display driver was manually disabled or encountered a TDR.
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+ //if (sessionStatus.HmdMounted) // HMD is on the user's head.
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+ //if (sessionStatus.IsVisible) // the game or experience has VR focus and is visible in the HMD.
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+}
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+
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+// Setup Oculus buffers for drawing
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+static void BeginOculusDrawing(void)
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+{
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+ GLuint currentTexId;
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+ int currentIndex;
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+
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+ ovr_GetTextureSwapChainCurrentIndex(session, buffer.textureChain, ¤tIndex);
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+ ovr_GetTextureSwapChainBufferGL(session, buffer.textureChain, currentIndex, ¤tTexId);
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+
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+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, buffer.fboId);
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+ glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, currentTexId, 0);
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+ //glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, buffer.depthId, 0); // Already binded
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+}
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+
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+// Finish Oculus drawing and blit framebuffer to mirror
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+static void EndOculusDrawing(void)
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+{
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+ // Unbind current framebuffer (Oculus buffer)
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+ glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
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+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
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+
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+ ovr_CommitTextureSwapChain(session, buffer.textureChain);
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+
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+ ovrLayerHeader *layers = &layer.eyeLayer.Header;
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+ ovr_SubmitFrame(session, frameIndex, &layer.viewScaleDesc, &layers, 1);
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+
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+ // Blit mirror texture to back buffer
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+ BlitOculusMirror(session, mirror);
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+}
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+
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+// Load Oculus required buffers: texture-swap-chain, fbo, texture-depth
|
|
|
|
+static OculusBuffer LoadOculusBuffer(ovrSession session, int width, int height)
|
|
|
|
+{
|
|
|
|
+ OculusBuffer buffer;
|
|
|
|
+ buffer.width = width;
|
|
|
|
+ buffer.height = height;
|
|
|
|
+
|
|
|
|
+ // Create OVR texture chain
|
|
|
|
+ ovrTextureSwapChainDesc desc = {};
|
|
|
|
+ desc.Type = ovrTexture_2D;
|
|
|
|
+ desc.ArraySize = 1;
|
|
|
|
+ desc.Width = width;
|
|
|
|
+ desc.Height = height;
|
|
|
|
+ desc.MipLevels = 1;
|
|
|
|
+ desc.Format = OVR_FORMAT_R8G8B8A8_UNORM_SRGB; // Requires glEnable(GL_FRAMEBUFFER_SRGB);
|
|
|
|
+ desc.SampleCount = 1;
|
|
|
|
+ desc.StaticImage = ovrFalse;
|
|
|
|
+
|
|
|
|
+ ovrResult result = ovr_CreateTextureSwapChainGL(session, &desc, &buffer.textureChain);
|
|
|
|
+
|
|
|
|
+ if (!OVR_SUCCESS(result)) TraceLog(WARNING, "OVR: Failed to create swap textures buffer");
|
|
|
|
+
|
|
|
|
+ int textureCount = 0;
|
|
|
|
+ ovr_GetTextureSwapChainLength(session, buffer.textureChain, &textureCount);
|
|
|
|
+
|
|
|
|
+ if (!OVR_SUCCESS(result) || !textureCount) TraceLog(WARNING, "OVR: Unable to count swap chain textures");
|
|
|
|
+
|
|
|
|
+ for (int i = 0; i < textureCount; ++i)
|
|
|
|
+ {
|
|
|
|
+ GLuint chainTexId;
|
|
|
|
+ ovr_GetTextureSwapChainBufferGL(session, buffer.textureChain, i, &chainTexId);
|
|
|
|
+ glBindTexture(GL_TEXTURE_2D, chainTexId);
|
|
|
|
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
|
|
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
|
|
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
|
|
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ glBindTexture(GL_TEXTURE_2D, 0);
|
|
|
|
+
|
|
|
|
+ /*
|
|
|
|
+ // Setup framebuffer object (using depth texture)
|
|
|
|
+ glGenFramebuffers(1, &buffer.fboId);
|
|
|
|
+ glGenTextures(1, &buffer.depthId);
|
|
|
|
+ glBindTexture(GL_TEXTURE_2D, buffer.depthId);
|
|
|
|
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
|
|
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
|
|
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
|
|
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
|
|
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT16, buffer.width, buffer.height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL);
|
|
|
|
+ */
|
|
|
|
+
|
|
|
|
+ // Setup framebuffer object (using depth renderbuffer)
|
|
|
|
+ glGenFramebuffers(1, &buffer.fboId);
|
|
|
|
+ glGenRenderbuffers(1, &buffer.depthId);
|
|
|
|
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, buffer.fboId);
|
|
|
|
+ glBindRenderbuffer(GL_RENDERBUFFER, buffer.depthId);
|
|
|
|
+ glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, buffer.width, buffer.height);
|
|
|
|
+ glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
|
|
|
+ glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, buffer.depthId);
|
|
|
|
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
|
|
|
|
+
|
|
|
|
+ return buffer;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+// Unload texture required buffers
|
|
|
|
+static void UnloadOculusBuffer(ovrSession session, OculusBuffer buffer)
|
|
|
|
+{
|
|
|
|
+ if (buffer.textureChain)
|
|
|
|
+ {
|
|
|
|
+ ovr_DestroyTextureSwapChain(session, buffer.textureChain);
|
|
|
|
+ buffer.textureChain = NULL;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (buffer.depthId != 0) glDeleteTextures(1, &buffer.depthId);
|
|
|
|
+ if (buffer.fboId != 0) glDeleteFramebuffers(1, &buffer.fboId);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+// Load Oculus mirror buffers
|
|
|
|
+static OculusMirror LoadOculusMirror(ovrSession session, int width, int height)
|
|
|
|
+{
|
|
|
|
+ OculusMirror mirror;
|
|
|
|
+ mirror.width = width;
|
|
|
|
+ mirror.height = height;
|
|
|
|
+
|
|
|
|
+ ovrMirrorTextureDesc mirrorDesc;
|
|
|
|
+ memset(&mirrorDesc, 0, sizeof(mirrorDesc));
|
|
|
|
+ mirrorDesc.Format = OVR_FORMAT_R8G8B8A8_UNORM_SRGB;
|
|
|
|
+ mirrorDesc.Width = mirror.width;
|
|
|
|
+ mirrorDesc.Height = mirror.height;
|
|
|
|
+
|
|
|
|
+ if (!OVR_SUCCESS(ovr_CreateMirrorTextureGL(session, &mirrorDesc, &mirror.texture))) TraceLog(WARNING, "Could not create mirror texture");
|
|
|
|
+
|
|
|
|
+ glGenFramebuffers(1, &mirror.fboId);
|
|
|
|
+
|
|
|
|
+ return mirror;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+// Unload Oculus mirror buffers
|
|
|
|
+static void UnloadOculusMirror(ovrSession session, OculusMirror mirror)
|
|
|
|
+{
|
|
|
|
+ if (mirror.fboId != 0) glDeleteFramebuffers(1, &mirror.fboId);
|
|
|
|
+ if (mirror.texture) ovr_DestroyMirrorTexture(session, mirror.texture);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+// Copy Oculus screen buffer to mirror texture
|
|
|
|
+static void BlitOculusMirror(ovrSession session, OculusMirror mirror)
|
|
|
|
+{
|
|
|
|
+ GLuint mirrorTextureId;
|
|
|
|
+
|
|
|
|
+ ovr_GetMirrorTextureBufferGL(session, mirror.texture, &mirrorTextureId);
|
|
|
|
+
|
|
|
|
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, mirror.fboId);
|
|
|
|
+ glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mirrorTextureId, 0);
|
|
|
|
+#if defined(GRAPHICS_API_OPENGL_33)
|
|
|
|
+ // NOTE: glBlitFramebuffer() requires extension: GL_EXT_framebuffer_blit (not available in OpenGL ES 2.0)
|
|
|
|
+ glBlitFramebuffer(0, 0, mirror.width, mirror.height, 0, mirror.height, mirror.width, 0, GL_COLOR_BUFFER_BIT, GL_NEAREST);
|
|
|
|
+#endif
|
|
|
|
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+// Init Oculus layer (similar to photoshop)
|
|
|
|
+static OculusLayer InitOculusLayer(ovrSession session)
|
|
|
|
+{
|
|
|
|
+ OculusLayer layer = { 0 };
|
|
|
|
+
|
|
|
|
+ layer.viewScaleDesc.HmdSpaceToWorldScaleInMeters = 1.0f;
|
|
|
|
+
|
|
|
|
+ memset(&layer.eyeLayer, 0, sizeof(ovrLayerEyeFov));
|
|
|
|
+ layer.eyeLayer.Header.Type = ovrLayerType_EyeFov;
|
|
|
|
+ layer.eyeLayer.Header.Flags = ovrLayerFlag_TextureOriginAtBottomLeft;
|
|
|
|
+
|
|
|
|
+ ovrEyeRenderDesc eyeRenderDescs[2];
|
|
|
|
+
|
|
|
|
+ for (int eye = 0; eye < 2; eye++)
|
|
|
|
+ {
|
|
|
|
+ eyeRenderDescs[eye] = ovr_GetRenderDesc(session, eye, hmdDesc.DefaultEyeFov[eye]);
|
|
|
|
+ ovrMatrix4f ovrPerspectiveProjection = ovrMatrix4f_Projection(eyeRenderDescs[eye].Fov, 0.01f, 10000.0f, ovrProjection_None); //ovrProjection_ClipRangeOpenGL);
|
|
|
|
+ layer.eyeProjections[eye] = FromOvrMatrix(ovrPerspectiveProjection); // NOTE: struct ovrMatrix4f { float M[4][4] } --> struct Matrix
|
|
|
|
+
|
|
|
|
+ layer.viewScaleDesc.HmdToEyeOffset[eye] = eyeRenderDescs[eye].HmdToEyeOffset;
|
|
|
|
+ layer.eyeLayer.Fov[eye] = eyeRenderDescs[eye].Fov;
|
|
|
|
+
|
|
|
|
+ ovrSizei eyeSize = ovr_GetFovTextureSize(session, eye, layer.eyeLayer.Fov[eye], 1.0f);
|
|
|
|
+ layer.eyeLayer.Viewport[eye].Size = eyeSize;
|
|
|
|
+ layer.eyeLayer.Viewport[eye].Pos.x = layer.width;
|
|
|
|
+ layer.eyeLayer.Viewport[eye].Pos.y = 0;
|
|
|
|
+
|
|
|
|
+ layer.height = eyeSize.h; //std::max(renderTargetSize.y, (uint32_t)eyeSize.h);
|
|
|
|
+ layer.width += eyeSize.w;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ return layer;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+// Convert from Oculus ovrMatrix4f struct to raymath Matrix struct
|
|
|
|
+static Matrix FromOvrMatrix(ovrMatrix4f ovrmat)
|
|
|
|
+{
|
|
|
|
+ Matrix rmat;
|
|
|
|
+
|
|
|
|
+ rmat.m0 = ovrmat.M[0][0];
|
|
|
|
+ rmat.m1 = ovrmat.M[1][0];
|
|
|
|
+ rmat.m2 = ovrmat.M[2][0];
|
|
|
|
+ rmat.m3 = ovrmat.M[3][0];
|
|
|
|
+ rmat.m4 = ovrmat.M[0][1];
|
|
|
|
+ rmat.m5 = ovrmat.M[1][1];
|
|
|
|
+ rmat.m6 = ovrmat.M[2][1];
|
|
|
|
+ rmat.m7 = ovrmat.M[3][1];
|
|
|
|
+ rmat.m8 = ovrmat.M[0][2];
|
|
|
|
+ rmat.m9 = ovrmat.M[1][2];
|
|
|
|
+ rmat.m10 = ovrmat.M[2][2];
|
|
|
|
+ rmat.m11 = ovrmat.M[3][2];
|
|
|
|
+ rmat.m12 = ovrmat.M[0][3];
|
|
|
|
+ rmat.m13 = ovrmat.M[1][3];
|
|
|
|
+ rmat.m14 = ovrmat.M[2][3];
|
|
|
|
+ rmat.m15 = ovrmat.M[3][3];
|
|
|
|
+
|
|
|
|
+ MatrixTranspose(&rmat);
|
|
|
|
+
|
|
|
|
+ return rmat;
|
|
|
|
+}
|
|
|
|
+#endif
|
|
|
|
+
|
|
|
|
+// Output a trace log message
|
|
|
|
+// NOTE: Expected msgType: (0)Info, (1)Error, (2)Warning
|
|
|
|
+static void TraceLog(int msgType, const char *text, ...)
|
|
|
|
+{
|
|
|
|
+ va_list args;
|
|
|
|
+ va_start(args, text);
|
|
|
|
+
|
|
|
|
+ switch (msgType)
|
|
|
|
+ {
|
|
|
|
+ case INFO: fprintf(stdout, "INFO: "); break;
|
|
|
|
+ case ERROR: fprintf(stdout, "ERROR: "); break;
|
|
|
|
+ case WARNING: fprintf(stdout, "WARNING: "); break;
|
|
|
|
+ case DEBUG: fprintf(stdout, "DEBUG: "); break;
|
|
|
|
+ default: break;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ vfprintf(stdout, text, args);
|
|
|
|
+ fprintf(stdout, "\n");
|
|
|
|
+
|
|
|
|
+ va_end(args);
|
|
|
|
+
|
|
|
|
+ if (msgType == ERROR) exit(1);
|
|
|
|
+}
|
|
|
|
+
|