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jkxr/Projects/Android/jni/OpenJK/JKXR/windows/TBXR_Common.cpp

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#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <time.h>
#include "VrInput.h"
#include "VrCvars.h"
#include <client/client.h>
#include "VrInput.h"
#include "VrCommon.h"
#include <SDL.h>
const float ZOOM_FOV_ADJUST = 1.1f;
const char* const requiredExtensionNames[] = {
XR_KHR_OPENGL_ENABLE_EXTENSION_NAME};
const uint32_t numRequiredExtensions =
sizeof(requiredExtensionNames) / sizeof(requiredExtensionNames[0]);
PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers;
PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers;
PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer;
PFNGLBLITFRAMEBUFFERPROC glBlitFramebuffer;
PFNGLGENRENDERBUFFERSPROC glGenRenderbuffers;
PFNGLDELETERENDERBUFFERSPROC glDeleteRenderbuffers;
PFNGLBINDRENDERBUFFERPROC glBindRenderbuffer;
PFNGLISRENDERBUFFERPROC glIsRenderbuffer;
PFNGLRENDERBUFFERSTORAGEPROC glRenderbufferStorage;
PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC glRenderbufferStorageMultisample;
PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC glRenderbufferStorageMultisampleEXT;
PFNGLFRAMEBUFFERRENDERBUFFERPROC glFramebufferRenderbuffer;
PFNGLFRAMEBUFFERTEXTURE2DPROC glFramebufferTexture2D;
PFNGLFRAMEBUFFERTEXTURELAYERPROC glFramebufferTextureLayer;
PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC glFramebufferTextureMultiviewOVR;
PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus;
PFNGLCHECKNAMEDFRAMEBUFFERSTATUSPROC glCheckNamedFramebufferStatus;
void GlInitExtensions() {
glGenFramebuffers = (PFNGLGENFRAMEBUFFERSPROC)SDL_GL_GetProcAddress("glGenFramebuffers");
glDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSPROC)SDL_GL_GetProcAddress("glDeleteFramebuffers");
glBindFramebuffer = (PFNGLBINDFRAMEBUFFERPROC)SDL_GL_GetProcAddress("glBindFramebuffer");
glBlitFramebuffer = (PFNGLBLITFRAMEBUFFERPROC)SDL_GL_GetProcAddress("glBlitFramebuffer");
glGenRenderbuffers = (PFNGLGENRENDERBUFFERSPROC)SDL_GL_GetProcAddress("glGenRenderbuffers");
glDeleteRenderbuffers = (PFNGLDELETERENDERBUFFERSPROC)SDL_GL_GetProcAddress("glDeleteRenderbuffers");
glBindRenderbuffer = (PFNGLBINDRENDERBUFFERPROC)SDL_GL_GetProcAddress("glBindRenderbuffer");
glIsRenderbuffer = (PFNGLISRENDERBUFFERPROC)SDL_GL_GetProcAddress("glIsRenderbuffer");
glRenderbufferStorage = (PFNGLRENDERBUFFERSTORAGEPROC)SDL_GL_GetProcAddress("glRenderbufferStorage");
glRenderbufferStorageMultisample = (PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC)SDL_GL_GetProcAddress("glRenderbufferStorageMultisample");
glRenderbufferStorageMultisampleEXT =
(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC)SDL_GL_GetProcAddress("glRenderbufferStorageMultisampleEXT");
glFramebufferRenderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFERPROC)SDL_GL_GetProcAddress("glFramebufferRenderbuffer");
glFramebufferTexture2D = (PFNGLFRAMEBUFFERTEXTURE2DPROC)SDL_GL_GetProcAddress("glFramebufferTexture2D");
glFramebufferTextureLayer = (PFNGLFRAMEBUFFERTEXTURELAYERPROC)SDL_GL_GetProcAddress("glFramebufferTextureLayer");
glFramebufferTextureMultiviewOVR = (PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC)SDL_GL_GetProcAddress("glFramebufferTextureMultiviewOVR");
glCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSPROC)SDL_GL_GetProcAddress("glCheckFramebufferStatus");
glCheckNamedFramebufferStatus = (PFNGLCHECKNAMEDFRAMEBUFFERSTATUSPROC)SDL_GL_GetProcAddress("glCheckNamedFramebufferStatus");
}
/*
================================================================================
System Clock Time in millis
================================================================================
*/
double TBXR_GetTimeInMilliSeconds()
{
return GetTickCount64();
}
int runStatus = -1;
void TBXR_exit(int exitCode)
{
runStatus = exitCode;
}
/*
================================================================================
ovrFramebuffer
================================================================================
*/
static void ovrFramebuffer_Clear(ovrFramebuffer* frameBuffer) {
frameBuffer->Width = 0;
frameBuffer->Height = 0;
frameBuffer->TextureSwapChainLength = 0;
frameBuffer->TextureSwapChainIndex = 0;
frameBuffer->ColorSwapChain.Handle = XR_NULL_HANDLE;
frameBuffer->ColorSwapChain.Width = 0;
frameBuffer->ColorSwapChain.Height = 0;
frameBuffer->ColorSwapChainImage = NULL;
frameBuffer->DepthBuffers = NULL;
frameBuffer->FrameBuffers = NULL;
}
void TBXR_ClearFrameBuffer(int width, int height);
static bool ovrFramebuffer_Create(
XrSession session,
ovrFramebuffer* frameBuffer,
const GLenum colorFormat,
const int width,
const int height) {
frameBuffer->Width = width;
frameBuffer->Height = height;
XrSwapchainCreateInfo swapChainCreateInfo;
memset(&swapChainCreateInfo, 0, sizeof(swapChainCreateInfo));
swapChainCreateInfo.type = XR_TYPE_SWAPCHAIN_CREATE_INFO;
swapChainCreateInfo.usageFlags = XR_SWAPCHAIN_USAGE_SAMPLED_BIT | XR_SWAPCHAIN_USAGE_COLOR_ATTACHMENT_BIT;
swapChainCreateInfo.mipCount = 1;
swapChainCreateInfo.format = colorFormat;
swapChainCreateInfo.sampleCount = 1;
swapChainCreateInfo.width = width;
swapChainCreateInfo.height = height;
swapChainCreateInfo.faceCount = 1;
swapChainCreateInfo.arraySize = 1;
frameBuffer->ColorSwapChain.Width = swapChainCreateInfo.width;
frameBuffer->ColorSwapChain.Height = swapChainCreateInfo.height;
// Create the swapchain.
OXR(xrCreateSwapchain(session, &swapChainCreateInfo, &frameBuffer->ColorSwapChain.Handle));
// Get the number of swapchain images.
OXR(xrEnumerateSwapchainImages(
frameBuffer->ColorSwapChain.Handle, 0, &frameBuffer->TextureSwapChainLength, NULL));
// Allocate the swapchain images array.
frameBuffer->ColorSwapChainImage = (XrSwapchainImageOpenGLKHR*)malloc(
frameBuffer->TextureSwapChainLength * sizeof(XrSwapchainImageOpenGLKHR));
// Populate the swapchain image array.
for (uint32_t i = 0; i < frameBuffer->TextureSwapChainLength; i++) {
frameBuffer->ColorSwapChainImage[i].type = XR_TYPE_SWAPCHAIN_IMAGE_OPENGL_KHR;
frameBuffer->ColorSwapChainImage[i].next = NULL;
}
OXR(xrEnumerateSwapchainImages(
frameBuffer->ColorSwapChain.Handle,
frameBuffer->TextureSwapChainLength,
&frameBuffer->TextureSwapChainLength,
(XrSwapchainImageBaseHeader*)frameBuffer->ColorSwapChainImage));
frameBuffer->DepthBuffers =
(GLuint*)malloc(frameBuffer->TextureSwapChainLength * sizeof(GLuint));
frameBuffer->FrameBuffers =
(GLuint*)malloc(frameBuffer->TextureSwapChainLength * sizeof(GLuint));
for (uint32_t i = 0; i < frameBuffer->TextureSwapChainLength; i++) {
// Create the color buffer texture.
const GLuint colorTexture = frameBuffer->ColorSwapChainImage[i].image;
// Create the frame buffer.
frameBuffer->FrameBuffers[i] = 0;
GL(glGenFramebuffers(1, &frameBuffer->FrameBuffers[i]));
{
GLint width;
GLint height;
glBindTexture(GL_TEXTURE_2D, colorTexture);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height);
TBXR_ClearFrameBuffer(width, height);
glGenTextures(1, &frameBuffer->DepthBuffers[i]);
glBindTexture(GL_TEXTURE_2D, frameBuffer->DepthBuffers[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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_COMPONENT32, width, height, 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr);
glBindTexture(GL_TEXTURE_2D,0);
}
}
return true;
}
void ovrFramebuffer_Destroy(ovrFramebuffer* frameBuffer) {
GL(glDeleteFramebuffers(frameBuffer->TextureSwapChainLength, frameBuffer->FrameBuffers));
GL(glDeleteTextures(frameBuffer->TextureSwapChainLength, frameBuffer->DepthBuffers));
OXR(xrDestroySwapchain(frameBuffer->ColorSwapChain.Handle));
free(frameBuffer->ColorSwapChainImage);
free(frameBuffer->DepthBuffers);
free(frameBuffer->FrameBuffers);
}
void ovrFramebuffer_SetCurrent(ovrFramebuffer* frameBuffer) {
glBindFramebuffer(GL_FRAMEBUFFER, frameBuffer->FrameBuffers[frameBuffer->TextureSwapChainIndex]);
const GLuint colorTexture = frameBuffer->ColorSwapChainImage[frameBuffer->TextureSwapChainIndex].image;
const uint32_t depthTexture = frameBuffer->DepthBuffers[frameBuffer->TextureSwapChainIndex];
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorTexture, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthTexture, 0);
}
void ovrFramebuffer_SetNone() {
GL(glBindFramebuffer(GL_FRAMEBUFFER, 0));
}
extern cvar_t* r_mode;
qboolean R_GetModeInfo(int* width, int* height, int mode);
void ovrFramebuffer_Resolve(ovrFramebuffer* frameBuffer) {
const GLuint colorTexture = frameBuffer->ColorSwapChainImage[frameBuffer->TextureSwapChainIndex].image;
int width, height;
R_GetModeInfo(&width, &height, r_mode->integer);
glBindFramebuffer(GL_READ_FRAMEBUFFER, frameBuffer->FrameBuffers[frameBuffer->TextureSwapChainIndex]);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, gAppState.Width, gAppState.Height,
0, 0, width, height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
}
void ovrFramebuffer_Acquire(ovrFramebuffer* frameBuffer) {
// Acquire the swapchain image
XrSwapchainImageAcquireInfo acquireInfo = {XR_TYPE_SWAPCHAIN_IMAGE_ACQUIRE_INFO, NULL};
OXR(xrAcquireSwapchainImage(
frameBuffer->ColorSwapChain.Handle, &acquireInfo, &frameBuffer->TextureSwapChainIndex));
XrSwapchainImageWaitInfo waitInfo;
waitInfo.type = XR_TYPE_SWAPCHAIN_IMAGE_WAIT_INFO;
waitInfo.next = NULL;
waitInfo.timeout = 1000000000; /* timeout in nanoseconds */
XrResult res = xrWaitSwapchainImage(frameBuffer->ColorSwapChain.Handle, &waitInfo);
int i = 0;
while (res == XR_TIMEOUT_EXPIRED) {
res = xrWaitSwapchainImage(frameBuffer->ColorSwapChain.Handle, &waitInfo);
i++;
ALOGV(
" Retry xrWaitSwapchainImage %d times due to XR_TIMEOUT_EXPIRED (duration %f seconds)",
i,
waitInfo.timeout * (1E-9));
}
}
void ovrFramebuffer_Release(ovrFramebuffer* frameBuffer) {
XrSwapchainImageReleaseInfo releaseInfo = {XR_TYPE_SWAPCHAIN_IMAGE_RELEASE_INFO, NULL};
OXR(xrReleaseSwapchainImage(frameBuffer->ColorSwapChain.Handle, &releaseInfo));
}
/*
================================================================================
ovrRenderer
================================================================================
*/
void ovrRenderer_Create(
XrSession session,
ovrRenderer* renderer,
int suggestedEyeTextureWidth,
int suggestedEyeTextureHeight) {
// Create the frame buffers.
for (int eye = 0; eye < ovrMaxNumEyes; eye++) {
ovrFramebuffer_Create(
session,
&renderer->FrameBuffer[eye],
GL_SRGB8_ALPHA8,
suggestedEyeTextureWidth,
suggestedEyeTextureHeight);
}
ovrFramebuffer_Create(
session,
&renderer->NullFrameBuffer,
GL_SRGB8_ALPHA8,
suggestedEyeTextureWidth,
suggestedEyeTextureHeight);
}
void ovrRenderer_Destroy(ovrRenderer* renderer) {
for (int eye = 0; eye < ovrMaxNumEyes; eye++) {
ovrFramebuffer_Destroy(&renderer->FrameBuffer[eye]);
}
}
/*
================================================================================
ovrMatrix4f
================================================================================
*/
ovrMatrix4f ovrMatrix4f_CreateFromQuaternion(const XrQuaternionf* q) {
const float ww = q->w * q->w;
const float xx = q->x * q->x;
const float yy = q->y * q->y;
const float zz = q->z * q->z;
ovrMatrix4f out;
out.M[0][0] = ww + xx - yy - zz;
out.M[0][1] = 2 * (q->x * q->y - q->w * q->z);
out.M[0][2] = 2 * (q->x * q->z + q->w * q->y);
out.M[0][3] = 0;
out.M[1][0] = 2 * (q->x * q->y + q->w * q->z);
out.M[1][1] = ww - xx + yy - zz;
out.M[1][2] = 2 * (q->y * q->z - q->w * q->x);
out.M[1][3] = 0;
out.M[2][0] = 2 * (q->x * q->z - q->w * q->y);
out.M[2][1] = 2 * (q->y * q->z + q->w * q->x);
out.M[2][2] = ww - xx - yy + zz;
out.M[2][3] = 0;
out.M[3][0] = 0;
out.M[3][1] = 0;
out.M[3][2] = 0;
out.M[3][3] = 1;
return out;
}
/// Use left-multiplication to accumulate transformations.
ovrMatrix4f ovrMatrix4f_Multiply(const ovrMatrix4f* a, const ovrMatrix4f* b) {
ovrMatrix4f out;
out.M[0][0] = a->M[0][0] * b->M[0][0] + a->M[0][1] * b->M[1][0] + a->M[0][2] * b->M[2][0] +
a->M[0][3] * b->M[3][0];
out.M[1][0] = a->M[1][0] * b->M[0][0] + a->M[1][1] * b->M[1][0] + a->M[1][2] * b->M[2][0] +
a->M[1][3] * b->M[3][0];
out.M[2][0] = a->M[2][0] * b->M[0][0] + a->M[2][1] * b->M[1][0] + a->M[2][2] * b->M[2][0] +
a->M[2][3] * b->M[3][0];
out.M[3][0] = a->M[3][0] * b->M[0][0] + a->M[3][1] * b->M[1][0] + a->M[3][2] * b->M[2][0] +
a->M[3][3] * b->M[3][0];
out.M[0][1] = a->M[0][0] * b->M[0][1] + a->M[0][1] * b->M[1][1] + a->M[0][2] * b->M[2][1] +
a->M[0][3] * b->M[3][1];
out.M[1][1] = a->M[1][0] * b->M[0][1] + a->M[1][1] * b->M[1][1] + a->M[1][2] * b->M[2][1] +
a->M[1][3] * b->M[3][1];
out.M[2][1] = a->M[2][0] * b->M[0][1] + a->M[2][1] * b->M[1][1] + a->M[2][2] * b->M[2][1] +
a->M[2][3] * b->M[3][1];
out.M[3][1] = a->M[3][0] * b->M[0][1] + a->M[3][1] * b->M[1][1] + a->M[3][2] * b->M[2][1] +
a->M[3][3] * b->M[3][1];
out.M[0][2] = a->M[0][0] * b->M[0][2] + a->M[0][1] * b->M[1][2] + a->M[0][2] * b->M[2][2] +
a->M[0][3] * b->M[3][2];
out.M[1][2] = a->M[1][0] * b->M[0][2] + a->M[1][1] * b->M[1][2] + a->M[1][2] * b->M[2][2] +
a->M[1][3] * b->M[3][2];
out.M[2][2] = a->M[2][0] * b->M[0][2] + a->M[2][1] * b->M[1][2] + a->M[2][2] * b->M[2][2] +
a->M[2][3] * b->M[3][2];
out.M[3][2] = a->M[3][0] * b->M[0][2] + a->M[3][1] * b->M[1][2] + a->M[3][2] * b->M[2][2] +
a->M[3][3] * b->M[3][2];
out.M[0][3] = a->M[0][0] * b->M[0][3] + a->M[0][1] * b->M[1][3] + a->M[0][2] * b->M[2][3] +
a->M[0][3] * b->M[3][3];
out.M[1][3] = a->M[1][0] * b->M[0][3] + a->M[1][1] * b->M[1][3] + a->M[1][2] * b->M[2][3] +
a->M[1][3] * b->M[3][3];
out.M[2][3] = a->M[2][0] * b->M[0][3] + a->M[2][1] * b->M[1][3] + a->M[2][2] * b->M[2][3] +
a->M[2][3] * b->M[3][3];
out.M[3][3] = a->M[3][0] * b->M[0][3] + a->M[3][1] * b->M[1][3] + a->M[3][2] * b->M[2][3] +
a->M[3][3] * b->M[3][3];
return out;
}
ovrMatrix4f ovrMatrix4f_CreateRotation(const float radiansX, const float radiansY, const float radiansZ) {
const float sinX = sinf(radiansX);
const float cosX = cosf(radiansX);
const ovrMatrix4f rotationX = {
{{1, 0, 0, 0}, {0, cosX, -sinX, 0}, {0, sinX, cosX, 0}, {0, 0, 0, 1}}};
const float sinY = sinf(radiansY);
const float cosY = cosf(radiansY);
const ovrMatrix4f rotationY = {
{{cosY, 0, sinY, 0}, {0, 1, 0, 0}, {-sinY, 0, cosY, 0}, {0, 0, 0, 1}}};
const float sinZ = sinf(radiansZ);
const float cosZ = cosf(radiansZ);
const ovrMatrix4f rotationZ = {
{{cosZ, -sinZ, 0, 0}, {sinZ, cosZ, 0, 0}, {0, 0, 1, 0}, {0, 0, 0, 1}}};
const ovrMatrix4f rotationXY = ovrMatrix4f_Multiply(&rotationY, &rotationX);
return ovrMatrix4f_Multiply(&rotationZ, &rotationXY);
}
XrVector4f XrVector4f_MultiplyMatrix4f(const ovrMatrix4f* a, const XrVector4f* v) {
XrVector4f out;
out.x = a->M[0][0] * v->x + a->M[0][1] * v->y + a->M[0][2] * v->z + a->M[0][3] * v->w;
out.y = a->M[1][0] * v->x + a->M[1][1] * v->y + a->M[1][2] * v->z + a->M[1][3] * v->w;
out.z = a->M[2][0] * v->x + a->M[2][1] * v->y + a->M[2][2] * v->z + a->M[2][3] * v->w;
out.w = a->M[3][0] * v->x + a->M[3][1] * v->y + a->M[3][2] * v->z + a->M[3][3] * v->w;
return out;
}
#ifndef EPSILON
#define EPSILON 0.001f
#endif
static XrVector3f normalizeVec(XrVector3f vec) {
//NOTE: leave w-component untouched
//@@const float EPSILON = 0.000001f;
float xxyyzz = vec.x*vec.x + vec.y*vec.y + vec.z*vec.z;
//@@if(xxyyzz < EPSILON)
//@@ return *this; // do nothing if it is zero vector
//float invLength = invSqrt(xxyyzz);
XrVector3f result;
float invLength = 1.0f / sqrtf(xxyyzz);
result.x = vec.x * invLength;
result.y = vec.y * invLength;
result.z = vec.z * invLength;
return result;
}
void NormalizeAngles(vec3_t angles)
{
while (angles[0] >= 90) angles[0] -= 180;
while (angles[1] >= 180) angles[1] -= 360;
while (angles[2] >= 180) angles[2] -= 360;
while (angles[0] < -90) angles[0] += 180;
while (angles[1] < -180) angles[1] += 360;
while (angles[2] < -180) angles[2] += 360;
}
void GetAnglesFromVectors(const XrVector3f forward, const XrVector3f right, const XrVector3f up, vec3_t angles)
{
float sr, sp, sy, cr, cp, cy;
sp = -forward.z;
float cp_x_cy = forward.x;
float cp_x_sy = forward.y;
float cp_x_sr = -right.z;
float cp_x_cr = up.z;
float yaw = atan2(cp_x_sy, cp_x_cy);
float roll = atan2(cp_x_sr, cp_x_cr);
cy = cos(yaw);
sy = sin(yaw);
cr = cos(roll);
sr = sin(roll);
if (fabs(cy) > EPSILON)
{
cp = cp_x_cy / cy;
}
else if (fabs(sy) > EPSILON)
{
cp = cp_x_sy / sy;
}
else if (fabs(sr) > EPSILON)
{
cp = cp_x_sr / sr;
}
else if (fabs(cr) > EPSILON)
{
cp = cp_x_cr / cr;
}
else
{
cp = cos(asin(sp));
}
float pitch = atan2(sp, cp);
angles[0] = pitch / (M_PI*2.f / 360.f);
angles[1] = yaw / (M_PI*2.f / 360.f);
angles[2] = roll / (M_PI*2.f / 360.f);
NormalizeAngles(angles);
}
void QuatToYawPitchRoll(XrQuaternionf q, vec3_t rotation, vec3_t out) {
ovrMatrix4f mat = ovrMatrix4f_CreateFromQuaternion( &q );
if (rotation[0] != 0.0f || rotation[1] != 0.0f || rotation[2] != 0.0f)
{
ovrMatrix4f rot = ovrMatrix4f_CreateRotation(DEG2RAD(rotation[0]), DEG2RAD(rotation[1]), DEG2RAD(rotation[2]));
mat = ovrMatrix4f_Multiply(&mat, &rot);
}
XrVector4f v1 = {0, 0, -1, 0};
XrVector4f v2 = {1, 0, 0, 0};
XrVector4f v3 = {0, 1, 0, 0};
XrVector4f forwardInVRSpace = XrVector4f_MultiplyMatrix4f(&mat, &v1);
XrVector4f rightInVRSpace = XrVector4f_MultiplyMatrix4f(&mat, &v2);
XrVector4f upInVRSpace = XrVector4f_MultiplyMatrix4f(&mat, &v3);
XrVector3f forward = {-forwardInVRSpace.z, -forwardInVRSpace.x, forwardInVRSpace.y};
XrVector3f right = {-rightInVRSpace.z, -rightInVRSpace.x, rightInVRSpace.y};
XrVector3f up = {-upInVRSpace.z, -upInVRSpace.x, upInVRSpace.y};
XrVector3f forwardNormal = normalizeVec(forward);
XrVector3f rightNormal = normalizeVec(right);
XrVector3f upNormal = normalizeVec(up);
GetAnglesFromVectors(forwardNormal, rightNormal, upNormal, out);
}
/*
========================
TBXR_Vibrate
========================
*/
void TBXR_Vibrate( int duration, int chan, float intensity );
/*
================================================================================
ovrRenderThread
================================================================================
*/
void ovrApp_Clear(ovrApp* app) {
app->Focused = false;
app->Instance = XR_NULL_HANDLE;
app->Session = XR_NULL_HANDLE;
memset(&app->ViewportConfig, 0, sizeof(XrViewConfigurationProperties));
memset(&app->ViewConfigurationView, 0, ovrMaxNumEyes * sizeof(XrViewConfigurationView));
app->SystemId = XR_NULL_SYSTEM_ID;
app->LocalSpace = XR_NULL_HANDLE;
app->ViewSpace = XR_NULL_HANDLE;
app->StageSpace = XR_NULL_HANDLE;
app->SessionActive = false;
app->SupportedDisplayRefreshRates = NULL;
app->RequestedDisplayRefreshRateIndex = 0;
app->NumSupportedDisplayRefreshRates = 0;
app->pfnGetDisplayRefreshRate = NULL;
app->pfnRequestDisplayRefreshRate = NULL;
app->SwapInterval = 1;
app->MainThreadTid = 0;
app->RenderThreadTid = 0;
}
void ovrApp_HandleSessionStateChanges(ovrApp* app, XrSessionState state) {
if (state == XR_SESSION_STATE_READY) {
assert(app->SessionActive == false);
XrSessionBeginInfo sessionBeginInfo;
memset(&sessionBeginInfo, 0, sizeof(sessionBeginInfo));
sessionBeginInfo.type = XR_TYPE_SESSION_BEGIN_INFO;
sessionBeginInfo.next = NULL;
sessionBeginInfo.primaryViewConfigurationType = app->ViewportConfig.viewConfigurationType;
XrResult result;
OXR(result = xrBeginSession(app->Session, &sessionBeginInfo));
app->SessionActive = (result == XR_SUCCESS);
} else if (state == XR_SESSION_STATE_STOPPING) {
assert(app->SessionActive);
OXR(xrEndSession(app->Session));
app->SessionActive = false;
}
}
GLboolean ovrApp_HandleXrEvents(ovrApp* app) {
XrEventDataBuffer eventDataBuffer = {};
GLboolean recenter = GL_FALSE;
// Poll for events
for (;;) {
XrEventDataBaseHeader* baseEventHeader = (XrEventDataBaseHeader*)(&eventDataBuffer);
baseEventHeader->type = XR_TYPE_EVENT_DATA_BUFFER;
baseEventHeader->next = NULL;
XrResult r;
OXR(r = xrPollEvent(app->Instance, &eventDataBuffer));
if (r != XR_SUCCESS) {
break;
}
switch (baseEventHeader->type) {
case XR_TYPE_EVENT_DATA_EVENTS_LOST:
ALOGV("xrPollEvent: received XR_TYPE_EVENT_DATA_EVENTS_LOST event");
break;
case XR_TYPE_EVENT_DATA_INSTANCE_LOSS_PENDING: {
const XrEventDataInstanceLossPending* instance_loss_pending_event =
(XrEventDataInstanceLossPending*)(baseEventHeader);
ALOGV(
"xrPollEvent: received XR_TYPE_EVENT_DATA_INSTANCE_LOSS_PENDING event: time %f",
FromXrTime(instance_loss_pending_event->lossTime));
} break;
case XR_TYPE_EVENT_DATA_INTERACTION_PROFILE_CHANGED:
ALOGV("xrPollEvent: received XR_TYPE_EVENT_DATA_INTERACTION_PROFILE_CHANGED event");
break;
case XR_TYPE_EVENT_DATA_PERF_SETTINGS_EXT: {
const XrEventDataPerfSettingsEXT* perf_settings_event =
(XrEventDataPerfSettingsEXT*)(baseEventHeader);
ALOGV(
"xrPollEvent: received XR_TYPE_EVENT_DATA_PERF_SETTINGS_EXT event: type %d subdomain %d : level %d -> level %d",
perf_settings_event->type,
perf_settings_event->subDomain,
perf_settings_event->fromLevel,
perf_settings_event->toLevel);
} break;
case XR_TYPE_EVENT_DATA_DISPLAY_REFRESH_RATE_CHANGED_FB: {
const XrEventDataDisplayRefreshRateChangedFB* refresh_rate_changed_event =
(XrEventDataDisplayRefreshRateChangedFB*)(baseEventHeader);
ALOGV(
"xrPollEvent: received XR_TYPE_EVENT_DATA_DISPLAY_REFRESH_RATE_CHANGED_FB event: fromRate %f -> toRate %f",
refresh_rate_changed_event->fromDisplayRefreshRate,
refresh_rate_changed_event->toDisplayRefreshRate);
} break;
case XR_TYPE_EVENT_DATA_REFERENCE_SPACE_CHANGE_PENDING: {
XrEventDataReferenceSpaceChangePending* ref_space_change_event =
(XrEventDataReferenceSpaceChangePending*)(baseEventHeader);
ALOGV(
"xrPollEvent: received XR_TYPE_EVENT_DATA_REFERENCE_SPACE_CHANGE_PENDING event: changed space: %d for session %p at time %f",
ref_space_change_event->referenceSpaceType,
(void*)ref_space_change_event->session,
FromXrTime(ref_space_change_event->changeTime));
recenter = GL_TRUE;
} break;
case XR_TYPE_EVENT_DATA_SESSION_STATE_CHANGED: {
const XrEventDataSessionStateChanged* session_state_changed_event =
(XrEventDataSessionStateChanged*)(baseEventHeader);
ALOGV(
"xrPollEvent: received XR_TYPE_EVENT_DATA_SESSION_STATE_CHANGED: %d for session %p at time %f",
session_state_changed_event->state,
(void*)session_state_changed_event->session,
FromXrTime(session_state_changed_event->time));
switch (session_state_changed_event->state) {
case XR_SESSION_STATE_FOCUSED:
app->Focused = true;
break;
case XR_SESSION_STATE_VISIBLE:
app->Focused = false;
break;
case XR_SESSION_STATE_READY:
case XR_SESSION_STATE_STOPPING:
ovrApp_HandleSessionStateChanges(app, session_state_changed_event->state);
break;
default:
break;
}
} break;
default:
ALOGV("xrPollEvent: Unknown event");
break;
}
}
return recenter;
}
ovrApp gAppState;
bool destroyed = qfalse;
void TBXR_GetScreenRes(int *width, int *height)
{
*width = gAppState.Width;
*height = gAppState.Height;
}
XrInstance TBXR_GetXrInstance() {
return gAppState.Instance;
}
static void TBXR_ProcessMessageQueue() {
}
void ovrTrackedController_Clear(ovrTrackedController* controller) {
controller->Active = false;
controller->Pose = XrPosef_Identity();
}
void TBXR_InitialiseResolution()
{
// Enumerate the viewport configurations.
uint32_t viewportConfigTypeCount = 0;
OXR(xrEnumerateViewConfigurations(
gAppState.Instance, gAppState.SystemId, 0, &viewportConfigTypeCount, NULL));
XrViewConfigurationType* viewportConfigurationTypes =
(XrViewConfigurationType*)malloc(viewportConfigTypeCount * sizeof(XrViewConfigurationType));
OXR(xrEnumerateViewConfigurations(
gAppState.Instance,
gAppState.SystemId,
viewportConfigTypeCount,
&viewportConfigTypeCount,
viewportConfigurationTypes));
ALOGV("Available Viewport Configuration Types: %d", viewportConfigTypeCount);
for (uint32_t i = 0; i < viewportConfigTypeCount; i++) {
const XrViewConfigurationType viewportConfigType = viewportConfigurationTypes[i];
ALOGV(
"Viewport configuration type %d : %s",
viewportConfigType,
viewportConfigType == XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO ? "Selected" : "");
XrViewConfigurationProperties viewportConfig;
viewportConfig.type = XR_TYPE_VIEW_CONFIGURATION_PROPERTIES;
viewportConfig.next = NULL;
OXR(xrGetViewConfigurationProperties(
gAppState.Instance, gAppState.SystemId, viewportConfigType, &viewportConfig));
ALOGV(
"FovMutable=%s ConfigurationType %d",
viewportConfig.fovMutable ? "true" : "false",
viewportConfig.viewConfigurationType);
uint32_t viewCount;
OXR(xrEnumerateViewConfigurationViews(
gAppState.Instance, gAppState.SystemId, viewportConfigType, 0, &viewCount, NULL));
if (viewCount > 0) {
XrViewConfigurationView* elements =
(XrViewConfigurationView*)malloc(viewCount * sizeof(XrViewConfigurationView));
for (uint32_t e = 0; e < viewCount; e++) {
elements[e].type = XR_TYPE_VIEW_CONFIGURATION_VIEW;
elements[e].next = NULL;
}
OXR(xrEnumerateViewConfigurationViews(
gAppState.Instance,
gAppState.SystemId,
viewportConfigType,
viewCount,
&viewCount,
elements));
// Cache the view config properties for the selected config type.
if (viewportConfigType == XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO) {
assert(viewCount == ovrMaxNumEyes);
for (uint32_t e = 0; e < viewCount; e++) {
gAppState.ViewConfigurationView[e] = elements[e];
}
}
free(elements);
} else {
ALOGE("Empty viewport configuration type: %d", viewCount);
}
}
free(viewportConfigurationTypes);
//Shortcut to width and height
gAppState.Width = gAppState.ViewConfigurationView[0].recommendedImageRectWidth;
gAppState.Height = gAppState.ViewConfigurationView[0].recommendedImageRectHeight;
}
void TBXR_EnterVR( ) {
if (gAppState.Session) {
Com_Printf("TBXR_EnterVR called with existing session");
return;
}
// Create the OpenXR Session.
XrGraphicsBindingOpenGLWin32KHR graphicsBindingAndroidOpenGL = {};
graphicsBindingAndroidOpenGL.type = XR_TYPE_GRAPHICS_BINDING_OPENGL_WIN32_KHR;
graphicsBindingAndroidOpenGL.next = NULL;
graphicsBindingAndroidOpenGL.hDC = wglGetCurrentDC();
graphicsBindingAndroidOpenGL.hGLRC = wglGetCurrentContext();
XrSessionCreateInfo sessionCreateInfo = {};
memset(&sessionCreateInfo, 0, sizeof(sessionCreateInfo));
sessionCreateInfo.type = XR_TYPE_SESSION_CREATE_INFO;
sessionCreateInfo.next = &graphicsBindingAndroidOpenGL;
sessionCreateInfo.createFlags = 0;
sessionCreateInfo.systemId = gAppState.SystemId;
XrResult initResult;
OXR(initResult = xrCreateSession(gAppState.Instance, &sessionCreateInfo, &gAppState.Session));
if (initResult != XR_SUCCESS) {
ALOGE("Failed to create XR session: %d.", initResult);
exit(1);
}
// Create a space to the first path
XrReferenceSpaceCreateInfo spaceCreateInfo = {};
spaceCreateInfo.type = XR_TYPE_REFERENCE_SPACE_CREATE_INFO;
spaceCreateInfo.referenceSpaceType = XR_REFERENCE_SPACE_TYPE_VIEW;
spaceCreateInfo.poseInReferenceSpace.orientation.w = 1.0f;
OXR(xrCreateReferenceSpace(gAppState.Session, &spaceCreateInfo, &gAppState.ViewSpace));
}
void TBXR_LeaveVR( ) {
if (gAppState.Session) {
OXR(xrDestroySpace(gAppState.ViewSpace));
OXR(xrDestroySpace(gAppState.LocalSpace));
OXR(xrDestroySpace(gAppState.StageSpace));
OXR(xrDestroySession(gAppState.Session));
gAppState.Session = NULL;
}
ovrRenderer_Destroy( &gAppState.Renderer );
}
void TBXR_InitRenderer( ) {
// Get the viewport configuration info for the chosen viewport configuration type.
gAppState.ViewportConfig.type = XR_TYPE_VIEW_CONFIGURATION_PROPERTIES;
OXR(xrGetViewConfigurationProperties(
gAppState.Instance, gAppState.SystemId, XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO, &gAppState.ViewportConfig));
TBXR_Recenter();
gAppState.Views = (XrView*)(malloc(ovrMaxNumEyes * sizeof(XrView)));
for (int eye = 0; eye < ovrMaxNumEyes; eye++) {
memset(&gAppState.Views[eye], 0, sizeof(XrView));
gAppState.Views[eye].type = XR_TYPE_VIEW;
}
ovrRenderer_Create(
gAppState.Session,
&gAppState.Renderer,
gAppState.ViewConfigurationView[0].recommendedImageRectWidth,
gAppState.ViewConfigurationView[0].recommendedImageRectHeight);
}
void VR_DestroyRenderer( )
{
ovrRenderer_Destroy(&gAppState.Renderer);
free(gAppState.Views);
}
void TBXR_InitialiseOpenXR()
{
// Create the OpenXR instance.
XrApplicationInfo appInfo;
memset(&appInfo, 0, sizeof(appInfo));
strcpy(appInfo.applicationName, "JKXR");
appInfo.applicationVersion = 0;
strcpy(appInfo.engineName, "JKXR");
appInfo.engineVersion = 0;
appInfo.apiVersion = XR_CURRENT_API_VERSION;
XrInstanceCreateInfo instanceCreateInfo;
memset(&instanceCreateInfo, 0, sizeof(instanceCreateInfo));
instanceCreateInfo.type = XR_TYPE_INSTANCE_CREATE_INFO;
instanceCreateInfo.next = NULL;
instanceCreateInfo.createFlags = 0;
instanceCreateInfo.applicationInfo = appInfo;
instanceCreateInfo.enabledApiLayerCount = 0;
instanceCreateInfo.enabledApiLayerNames = NULL;
instanceCreateInfo.enabledExtensionCount = numRequiredExtensions;
instanceCreateInfo.enabledExtensionNames = requiredExtensionNames;
XrResult initResult;
OXR(initResult = xrCreateInstance(&instanceCreateInfo, &gAppState.Instance));
if (initResult != XR_SUCCESS) {
ALOGE("Failed to create XR instance: %d.", initResult);
exit(1);
}
XrInstanceProperties instanceInfo;
instanceInfo.type = XR_TYPE_INSTANCE_PROPERTIES;
instanceInfo.next = NULL;
OXR(xrGetInstanceProperties(gAppState.Instance, &instanceInfo));
ALOGV(
"OpenXR Runtime %s: Version : %u.%u.%u",
instanceInfo.runtimeName,
XR_VERSION_MAJOR(instanceInfo.runtimeVersion),
XR_VERSION_MINOR(instanceInfo.runtimeVersion),
XR_VERSION_PATCH(instanceInfo.runtimeVersion));
XrSystemGetInfo systemGetInfo;
memset(&systemGetInfo, 0, sizeof(systemGetInfo));
systemGetInfo.type = XR_TYPE_SYSTEM_GET_INFO;
systemGetInfo.next = NULL;
systemGetInfo.formFactor = XR_FORM_FACTOR_HEAD_MOUNTED_DISPLAY;
OXR(initResult = xrGetSystem(gAppState.Instance, &systemGetInfo, &gAppState.SystemId));
if (initResult != XR_SUCCESS) {
if (initResult != XR_SUCCESS) {
Sys_Dialog(DT_ERROR, "Unable to create OpenXR System - Please ensure you headset is connected and powered on.", "No VR Headset Detected");
exit(1);
}
exit(1);
}
// Get the graphics requirements.
PFN_xrGetOpenGLGraphicsRequirementsKHR pfnGetOpenGLGraphicsRequirementsKHR = NULL;
OXR(xrGetInstanceProcAddr(
gAppState.Instance,
"xrGetOpenGLGraphicsRequirementsKHR",
(PFN_xrVoidFunction * )(&pfnGetOpenGLGraphicsRequirementsKHR)));
XrGraphicsRequirementsOpenGLKHR graphicsRequirements = {};
graphicsRequirements.type = XR_TYPE_GRAPHICS_REQUIREMENTS_OPENGL_KHR;
OXR(pfnGetOpenGLGraphicsRequirementsKHR(gAppState.Instance, gAppState.SystemId,
&graphicsRequirements));
TBXR_InitialiseResolution();
gAppState.Initialised = true;
}
void TBXR_Recenter() {
// Calculate recenter reference
XrReferenceSpaceCreateInfo spaceCreateInfo = {};
spaceCreateInfo.type = XR_TYPE_REFERENCE_SPACE_CREATE_INFO;
spaceCreateInfo.poseInReferenceSpace.orientation.w = 1.0f;
if (gAppState.StageSpace != XR_NULL_HANDLE) {
vec3_t rotation = {0, 0, 0};
XrSpaceLocation loc = {};
loc.type = XR_TYPE_SPACE_LOCATION;
OXR(xrLocateSpace(gAppState.ViewSpace, gAppState.StageSpace, gAppState.FrameState.predictedDisplayTime, &loc));
QuatToYawPitchRoll(loc.pose.orientation, rotation, vr.hmdorientation);
}
// Delete previous space instances
if (gAppState.StageSpace != XR_NULL_HANDLE) {
OXR(xrDestroySpace(gAppState.StageSpace));
}
spaceCreateInfo.referenceSpaceType = XR_REFERENCE_SPACE_TYPE_LOCAL;
OXR(xrCreateReferenceSpace(gAppState.Session, &spaceCreateInfo, &gAppState.LocalSpace));
spaceCreateInfo.referenceSpaceType = XR_REFERENCE_SPACE_TYPE_STAGE;
OXR(xrCreateReferenceSpace(gAppState.Session, &spaceCreateInfo, &gAppState.StageSpace));
ALOGV("Created stage space");
}
void TBXR_WaitForSessionActive()
{//Now wait for the session to be ready
while (!gAppState.SessionActive) {
TBXR_ProcessMessageQueue();
if (ovrApp_HandleXrEvents(&gAppState)) {
TBXR_Recenter();
}
}
}
static void TBXR_GetHMDOrientation() {
if (gAppState.FrameState.predictedDisplayTime == 0)
{
return;
}
// Get the HMD pose, predicted for the middle of the time period during which
// the new eye images will be displayed. The number of frames predicted ahead
// depends on the pipeline depth of the engine and the synthesis rate.
// The better the prediction, the less black will be pulled in at the edges.
XrSpaceLocation loc = {};
loc.type = XR_TYPE_SPACE_LOCATION;
OXR(xrLocateSpace(gAppState.ViewSpace, gAppState.StageSpace, gAppState.FrameState.predictedDisplayTime, &loc));
gAppState.xfStageFromHead = loc.pose;
const XrQuaternionf quatHmd = gAppState.xfStageFromHead.orientation;
const XrVector3f positionHmd = gAppState.xfStageFromHead.position;
vec3_t rotation = {0, 0, 0};
vec3_t hmdorientation = {0, 0, 0};
QuatToYawPitchRoll(quatHmd, rotation, hmdorientation);
VR_SetHMDPosition(positionHmd.x, positionHmd.y, positionHmd.z);
VR_SetHMDOrientation(hmdorientation[0], hmdorientation[1], hmdorientation[2]);
}
//All the stuff we want to do each frame
void TBXR_FrameSetup()
{
if (!gAppState.Initialised)
{
return;
}
if (gAppState.FrameSetup)
{
return;
}
while (!destroyed)
{
TBXR_ProcessMessageQueue();
if (ovrApp_HandleXrEvents(&gAppState))
{
TBXR_Recenter();
}
if (gAppState.SessionActive == GL_FALSE)
{
continue;
}
break;
}
if (destroyed)
{
TBXR_LeaveVR();
exit(0); // in case Java doesn't do the job
}
// NOTE: OpenXR does not use the concept of frame indices. Instead,
// XrWaitFrame returns the predicted display time.
//XrFrameWaitInfo waitFrameInfo = {};
//waitFrameInfo.type = XR_TYPE_FRAME_WAIT_INFO;
//waitFrameInfo.next = NULL;
memset(&gAppState.FrameState, 0, sizeof(XrFrameState));
gAppState.FrameState.type = XR_TYPE_FRAME_STATE;
OXR(xrWaitFrame(gAppState.Session, NULL, &gAppState.FrameState));
// Get the HMD pose, predicted for the middle of the time period during which
// the new eye images will be displayed. The number of frames predicted ahead
// depends on the pipeline depth of the engine and the synthesis rate.
// The better the prediction, the less black will be pulled in at the edges.
XrFrameBeginInfo beginFrameDesc = {};
beginFrameDesc.type = XR_TYPE_FRAME_BEGIN_INFO;
beginFrameDesc.next = NULL;
OXR(xrBeginFrame(gAppState.Session, &beginFrameDesc));
//Game specific frame setup stuff called here
VR_FrameSetup();
//Get controller state here
TBXR_GetHMDOrientation();
VR_HandleControllerInput();
TBXR_ProcessHaptics();
gAppState.FrameSetup = true;
}
int TBXR_GetRefresh()
{
return gAppState.currentDisplayRefreshRate ? gAppState.currentDisplayRefreshRate : 90;
}
#define GL_FRAMEBUFFER_SRGB 0x8DB9
void TBXR_ClearFrameBuffer(int width, int height)
{
glEnable( GL_SCISSOR_TEST );
glViewport( 0, 0, width, height );
//Black
glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
glScissor( 0, 0, width, height );
glClear( GL_COLOR_BUFFER_BIT );
glScissor( 0, 0, 0, 0 );
glDisable( GL_SCISSOR_TEST );
//This is a bit of a hack, but we need to do this to correct for the fact that the engine uses linear RGB colorspace
//but openxr uses SRGB (or something, must admit I don't really understand, but adding this works to make it look good again)
glDisable( GL_FRAMEBUFFER_SRGB );
}
void TBXR_prepareEyeBuffer(int eye )
{
vr.eye = eye;
ovrFramebuffer* frameBuffer = &(gAppState.Renderer.FrameBuffer[eye]);
ovrFramebuffer_Acquire(frameBuffer);
ovrFramebuffer_SetCurrent(frameBuffer);
TBXR_ClearFrameBuffer(frameBuffer->ColorSwapChain.Width, frameBuffer->ColorSwapChain.Height);
ovrFramebuffer_Acquire(&gAppState.Renderer.NullFrameBuffer);
//Seems odd, but used to move the HUD elements to be central on the player's view
//HMDs with a symmetric fov (like the PICO) will have 0 in this value, but the Meta Quest
//will have an asymmetric fov and the HUD would be very misaligned as a result
vr.off_center_fov_x = -(gAppState.Views[eye].fov.angleLeft + gAppState.Views[eye].fov.angleRight) / 2.0f;
vr.off_center_fov_y = -(gAppState.Views[eye].fov.angleUp + gAppState.Views[eye].fov.angleDown) / 2.0f;
}
void WIN_SwapWindow();
void TBXR_finishEyeBuffer(int eye )
{
ovrRenderer *renderer = &gAppState.Renderer;
ovrFramebuffer *frameBuffer = &(renderer->FrameBuffer[eye]);
// Clear the alpha channel, other way OpenXR would not transfer the framebuffer fully
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
ovrFramebuffer_Release(&gAppState.Renderer.NullFrameBuffer);
ovrFramebuffer_SetNone();
if (eye == 0)
{
ovrFramebuffer_Resolve(frameBuffer);
WIN_SwapWindow();
}
ovrFramebuffer_Release(frameBuffer);
}
void TBXR_updateProjections()
{
XrViewLocateInfo viewLocateInfo = {};
viewLocateInfo.type = XR_TYPE_VIEW_LOCATE_INFO;
viewLocateInfo.viewConfigurationType = gAppState.ViewportConfig.viewConfigurationType;
viewLocateInfo.displayTime = gAppState.FrameState.predictedDisplayTime;
viewLocateInfo.space = gAppState.LocalSpace;
XrViewState viewState = {XR_TYPE_VIEW_STATE, NULL};
uint32_t projectionCapacityInput = ovrMaxNumEyes;
uint32_t projectionCountOutput = projectionCapacityInput;
OXR(xrLocateViews(
gAppState.Session,
&viewLocateInfo,
&viewState,
projectionCapacityInput,
&projectionCountOutput,
gAppState.Views));
}
void TBXR_submitFrame()
{
if (gAppState.SessionActive == GL_FALSE) {
return;
}
TBXR_updateProjections();
//Calculate the maximum extent fov for use in culling in the engine (we won't want to cull inside this fov)
vr.fov_x = (fabs(gAppState.Views[0].fov.angleLeft) + fabs(gAppState.Views[1].fov.angleRight)) * 180.0f / M_PI;
vr.fov_y = (fabs(gAppState.Views[0].fov.angleUp) + fabs(gAppState.Views[0].fov.angleDown)) * 180.0f / M_PI;
XrFrameEndInfo endFrameInfo = {};
endFrameInfo.type = XR_TYPE_FRAME_END_INFO;
endFrameInfo.displayTime = gAppState.FrameState.predictedDisplayTime;
endFrameInfo.environmentBlendMode = XR_ENVIRONMENT_BLEND_MODE_OPAQUE;
const XrCompositionLayerBaseHeader* layers[ovrMaxLayerCount] = {};
int layerCount = 0;
endFrameInfo.layers = layers;
XrCompositionLayerProjection projection_layer;
XrCompositionLayerProjectionView projection_layer_elements[2] = {};
XrCompositionLayerQuad quad_layer;
if (!VR_UseScreenLayer())
{
memset(&projection_layer, 0, sizeof(XrCompositionLayerProjection));
projection_layer.type = XR_TYPE_COMPOSITION_LAYER_PROJECTION;
projection_layer.layerFlags = XR_COMPOSITION_LAYER_BLEND_TEXTURE_SOURCE_ALPHA_BIT;
projection_layer.layerFlags |= XR_COMPOSITION_LAYER_CORRECT_CHROMATIC_ABERRATION_BIT;
projection_layer.space = gAppState.LocalSpace;
projection_layer.viewCount = ovrMaxNumEyes;
projection_layer.views = projection_layer_elements;
for (int eye = 0; eye < ovrMaxNumEyes; eye++)
{
XrFovf fov = gAppState.Views[eye].fov;
if (vr.cgzoommode)
{
fov.angleLeft /= ZOOM_FOV_ADJUST;
fov.angleRight /= ZOOM_FOV_ADJUST;
fov.angleUp /= ZOOM_FOV_ADJUST;
fov.angleDown /= ZOOM_FOV_ADJUST;
}
memset(&projection_layer_elements[eye], 0, sizeof(XrCompositionLayerProjectionView));
projection_layer_elements[eye].type = XR_TYPE_COMPOSITION_LAYER_PROJECTION_VIEW;
projection_layer_elements[eye].pose = gAppState.Views[eye].pose;
projection_layer_elements[eye].fov = fov;
projection_layer_elements[eye].subImage.swapchain = gAppState.Renderer.FrameBuffer[eye].ColorSwapChain.Handle;
projection_layer_elements[eye].subImage.imageRect.extent.width = gAppState.Renderer.FrameBuffer[eye].ColorSwapChain.Width;
projection_layer_elements[eye].subImage.imageRect.extent.height = gAppState.Renderer.FrameBuffer[eye].ColorSwapChain.Height;
}
// Compose the layers for this frame.
layers[layerCount++] = (const XrCompositionLayerBaseHeader*)&projection_layer;
}
else
{
//Empty black projection for now
memset(&projection_layer, 0, sizeof(XrCompositionLayerProjection));
projection_layer.type = XR_TYPE_COMPOSITION_LAYER_PROJECTION;
projection_layer.layerFlags = XR_COMPOSITION_LAYER_BLEND_TEXTURE_SOURCE_ALPHA_BIT;
projection_layer.space = gAppState.LocalSpace;
projection_layer.viewCount = ovrMaxNumEyes;
projection_layer.views = projection_layer_elements;
for (int eye = 0; eye < ovrMaxNumEyes; eye++)
{
memset(&projection_layer_elements[eye], 0, sizeof(XrCompositionLayerProjectionView));
projection_layer_elements[eye].type = XR_TYPE_COMPOSITION_LAYER_PROJECTION_VIEW;
projection_layer_elements[eye].pose = gAppState.Views[eye].pose;
projection_layer_elements[eye].fov = gAppState.Views[eye].fov;
projection_layer_elements[eye].subImage.swapchain = gAppState.Renderer.NullFrameBuffer.ColorSwapChain.Handle;
projection_layer_elements[eye].subImage.imageRect.extent.width = gAppState.Renderer.NullFrameBuffer.ColorSwapChain.Width;
projection_layer_elements[eye].subImage.imageRect.extent.height = gAppState.Renderer.NullFrameBuffer.ColorSwapChain.Height;
}
// Compose the layers for this frame.
layers[layerCount++] = (const XrCompositionLayerBaseHeader*)&projection_layer;
memset(&quad_layer, 0, sizeof(XrCompositionLayerQuad));
// Build the quad layers
int32_t width = gAppState.Renderer.FrameBuffer[0].ColorSwapChain.Width;
int32_t height = gAppState.Renderer.FrameBuffer[0].ColorSwapChain.Height;
quad_layer.type = XR_TYPE_COMPOSITION_LAYER_QUAD;
quad_layer.layerFlags = XR_COMPOSITION_LAYER_BLEND_TEXTURE_SOURCE_ALPHA_BIT;
quad_layer.space = gAppState.StageSpace;
quad_layer.eyeVisibility =XR_EYE_VISIBILITY_BOTH;
quad_layer.subImage.swapchain = gAppState.Renderer.FrameBuffer[0].ColorSwapChain.Handle;
quad_layer.subImage.imageRect.extent.width = width;
quad_layer.subImage.imageRect.extent.height = height;
const XrVector3f axis = { 0.0f, 1.0f, 0.0f };
XrVector3f pos = {
gAppState.xfStageFromHead.position.x - sin(DEG2RAD(vr.hmdorientation_snap[YAW])) * VR_GetScreenLayerDistance(),
1.0f,
gAppState.xfStageFromHead.position.z - cos(DEG2RAD(vr.hmdorientation_snap[YAW])) * VR_GetScreenLayerDistance()
};
quad_layer.pose.orientation = XrQuaternionf_CreateFromVectorAngle(axis, DEG2RAD(vr.hmdorientation_snap[YAW]));
quad_layer.pose.position = pos;
XrExtent2Df size = { 6.0f, 5.5f };
quad_layer.size = size;
layers[layerCount++] = (const XrCompositionLayerBaseHeader*)&quad_layer;
}
endFrameInfo.layerCount = layerCount;
OXR(xrEndFrame(gAppState.Session, &endFrameInfo));
gAppState.FrameSetup = false;
}
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