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Doom3Quest_SurfaceView.c
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Doom3Quest_SurfaceView.c
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/************************************************************************************
Filename : Q2VR_SurfaceView.c based on VrCubeWorld_SurfaceView.c
Content : This sample uses a plain Android SurfaceView and handles all
Activity and Surface life cycle events in native code. This sample
does not use the application framework and also does not use LibOVR.
This sample only uses the VrApi.
Created : March, 2015
Authors : J.M.P. van Waveren / Simon Brown
Copyright : Copyright 2015 Oculus VR, LLC. All Rights reserved.
*************************************************************************************/
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/prctl.h> // for prctl( PR_SET_NAME )
#include <android/log.h>
#include <android/native_window_jni.h> // for native window JNI
#include <android/input.h>
#include "argtable3.h"
#include "VrInput.h"
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES3/gl3.h>
#include <GLES3/gl3ext.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_main.h>
#include <SDL2/SDL_mutex.h>
#include "VrApi_Helpers.h"
#include "VrApi_SystemUtils.h"
#include "VrApi_Input.h"
#include "VrCompositor.h"
#include "VrInput.h"
#include "../../../../../../VrApi/Include/VrApi_Types.h"
#include "../../../../../../VrApi/Include/VrApi.h"
//Define all variables here that were externs in the VrCommon.h
bool Doom3Quest_initialised;
float playerYaw;
float vrFOV = 0.0f;
bool vr_moveuseoffhand;
float vr_snapturn_angle;
bool vr_switchsticks;
bool vr_secondarybuttonmappings;
bool vr_twohandedweapons;
bool shutdown;
#if !defined( EGL_OPENGL_ES3_BIT_KHR )
#define EGL_OPENGL_ES3_BIT_KHR 0x0040
#endif
// EXT_texture_border_clamp
#ifndef GL_CLAMP_TO_BORDER
#define GL_CLAMP_TO_BORDER 0x812D
#endif
#ifndef GL_TEXTURE_BORDER_COLOR
#define GL_TEXTURE_BORDER_COLOR 0x1004
#endif
// Must use EGLSyncKHR because the VrApi still supports OpenGL ES 2.0
#define EGL_SYNC
#if defined EGL_SYNC
// EGL_KHR_reusable_sync
PFNEGLCREATESYNCKHRPROC eglCreateSyncKHR;
PFNEGLDESTROYSYNCKHRPROC eglDestroySyncKHR;
PFNEGLCLIENTWAITSYNCKHRPROC eglClientWaitSyncKHR;
PFNEGLSIGNALSYNCKHRPROC eglSignalSyncKHR;
PFNEGLGETSYNCATTRIBKHRPROC eglGetSyncAttribKHR;
#endif
//Let's go to the maximum!
int CPU_LEVEL = 4;
int GPU_LEVEL = 4;
int NUM_MULTI_SAMPLES = 1;
int FFR = 0;
float SS_MULTIPLIER = 1.0f;
int DISPLAY_REFRESH = 60;
vrClientInfo vr;
vrClientInfo *pVRClientInfo;
jclass clazz;
float radians(float deg) {
return (deg * M_PI) / 180.0;
}
float degrees(float rad) {
return (rad * 180.0) / M_PI;
}
/* global arg_xxx structs */
struct arg_dbl *ss;
struct arg_int *cpu;
struct arg_int *gpu;
struct arg_int *msaa;
struct arg_int *ffr;
struct arg_int *refresh;
struct arg_end *end;
char **argv;
int argc=0;
enum control_scheme {
RIGHT_HANDED_DEFAULT = 0,
LEFT_HANDED_DEFAULT = 10
};
/*
================================================================================
System Clock Time in millis
================================================================================
*/
double GetTimeInMilliSeconds()
{
struct timespec now;
clock_gettime( CLOCK_MONOTONIC, &now );
return ( now.tv_sec * 1e9 + now.tv_nsec ) * (double)(1e-6);
}
bool forceVirtualScreen = false;
bool inMenu = false;
bool inGameGuiActive = false;
bool objectiveSystemActive = false;
bool inCinematic = false;
void Doom3Quest_setUseScreenLayer(int screen)
{
inMenu = screen & 0x1;
inGameGuiActive = !!(screen & 0x2);
objectiveSystemActive = !!(screen & 0x4);
inCinematic = !!(screen & 0x8);
}
bool Doom3Quest_useScreenLayer()
{
return inMenu || inCinematic || forceVirtualScreen;
}
static void UnEscapeQuotes( char *arg )
{
char *last = NULL;
while( *arg ) {
if( *arg == '"' && *last == '\\' ) {
char *c_curr = arg;
char *c_last = last;
while( *c_curr ) {
*c_last = *c_curr;
c_last = c_curr;
c_curr++;
}
*c_last = '\0';
}
last = arg;
arg++;
}
}
static int ParseCommandLine(char *cmdline, char **argv)
{
char *bufp;
char *lastp = NULL;
int argc, last_argc;
argc = last_argc = 0;
for ( bufp = cmdline; *bufp; ) {
while ( isspace(*bufp) ) {
++bufp;
}
if ( *bufp == '"' ) {
++bufp;
if ( *bufp ) {
if ( argv ) {
argv[argc] = bufp;
}
++argc;
}
while ( *bufp && ( *bufp != '"' || *lastp == '\\' ) ) {
lastp = bufp;
++bufp;
}
} else {
if ( *bufp ) {
if ( argv ) {
argv[argc] = bufp;
}
++argc;
}
while ( *bufp && ! isspace(*bufp) ) {
++bufp;
}
}
if ( *bufp ) {
if ( argv ) {
*bufp = '\0';
}
++bufp;
}
if( argv && last_argc != argc ) {
UnEscapeQuotes( argv[last_argc] );
}
last_argc = argc;
}
if ( argv ) {
argv[argc] = NULL;
}
return(argc);
}
/*
================================================================================
OpenGL-ES Utility Functions
================================================================================
*/
typedef struct
{
bool multi_view; // GL_OVR_multiview, GL_OVR_multiview2
bool EXT_texture_border_clamp; // GL_EXT_texture_border_clamp, GL_OES_texture_border_clamp
} OpenGLExtensions_t;
OpenGLExtensions_t glExtensions;
static void EglInitExtensions()
{
#if defined EGL_SYNC
eglCreateSyncKHR = (PFNEGLCREATESYNCKHRPROC) eglGetProcAddress( "eglCreateSyncKHR" );
eglDestroySyncKHR = (PFNEGLDESTROYSYNCKHRPROC) eglGetProcAddress( "eglDestroySyncKHR" );
eglClientWaitSyncKHR = (PFNEGLCLIENTWAITSYNCKHRPROC) eglGetProcAddress( "eglClientWaitSyncKHR" );
eglSignalSyncKHR = (PFNEGLSIGNALSYNCKHRPROC) eglGetProcAddress( "eglSignalSyncKHR" );
eglGetSyncAttribKHR = (PFNEGLGETSYNCATTRIBKHRPROC) eglGetProcAddress( "eglGetSyncAttribKHR" );
#endif
const char * allExtensions = (const char *)glGetString( GL_EXTENSIONS );
if ( allExtensions != NULL )
{
glExtensions.multi_view = strstr( allExtensions, "GL_OVR_multiview2" ) &&
strstr( allExtensions, "GL_OVR_multiview_multisampled_render_to_texture" );
glExtensions.EXT_texture_border_clamp = strstr( allExtensions, "GL_EXT_texture_border_clamp" ) ||
strstr( allExtensions, "GL_OES_texture_border_clamp" );
}
}
static const char * EglErrorString( const EGLint error )
{
switch ( error )
{
case EGL_SUCCESS: return "EGL_SUCCESS";
case EGL_NOT_INITIALIZED: return "EGL_NOT_INITIALIZED";
case EGL_BAD_ACCESS: return "EGL_BAD_ACCESS";
case EGL_BAD_ALLOC: return "EGL_BAD_ALLOC";
case EGL_BAD_ATTRIBUTE: return "EGL_BAD_ATTRIBUTE";
case EGL_BAD_CONTEXT: return "EGL_BAD_CONTEXT";
case EGL_BAD_CONFIG: return "EGL_BAD_CONFIG";
case EGL_BAD_CURRENT_SURFACE: return "EGL_BAD_CURRENT_SURFACE";
case EGL_BAD_DISPLAY: return "EGL_BAD_DISPLAY";
case EGL_BAD_SURFACE: return "EGL_BAD_SURFACE";
case EGL_BAD_MATCH: return "EGL_BAD_MATCH";
case EGL_BAD_PARAMETER: return "EGL_BAD_PARAMETER";
case EGL_BAD_NATIVE_PIXMAP: return "EGL_BAD_NATIVE_PIXMAP";
case EGL_BAD_NATIVE_WINDOW: return "EGL_BAD_NATIVE_WINDOW";
case EGL_CONTEXT_LOST: return "EGL_CONTEXT_LOST";
default: return "unknown";
}
}
static const char * GlFrameBufferStatusString( GLenum status )
{
switch ( status )
{
case GL_FRAMEBUFFER_UNDEFINED: return "GL_FRAMEBUFFER_UNDEFINED";
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: return "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT";
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: return "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT";
case GL_FRAMEBUFFER_UNSUPPORTED: return "GL_FRAMEBUFFER_UNSUPPORTED";
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: return "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE";
default: return "unknown";
}
}
/*
================================================================================
ovrEgl
================================================================================
*/
typedef struct
{
EGLint MajorVersion;
EGLint MinorVersion;
EGLDisplay Display;
EGLConfig Config;
EGLSurface TinySurface;
EGLSurface MainSurface;
EGLContext Context;
} ovrEgl;
static void ovrEgl_Clear( ovrEgl * egl )
{
egl->MajorVersion = 0;
egl->MinorVersion = 0;
egl->Display = 0;
egl->Config = 0;
egl->TinySurface = EGL_NO_SURFACE;
egl->MainSurface = EGL_NO_SURFACE;
egl->Context = EGL_NO_CONTEXT;
}
static void ovrEgl_CreateContext( ovrEgl * egl, const ovrEgl * shareEgl )
{
if ( egl->Display != 0 )
{
return;
}
egl->Display = eglGetDisplay( EGL_DEFAULT_DISPLAY );
eglInitialize( egl->Display, &egl->MajorVersion, &egl->MinorVersion );
// Do NOT use eglChooseConfig, because the Android EGL code pushes in multisample
// flags in eglChooseConfig if the user has selected the "force 4x MSAA" option in
// settings, and that is completely wasted for our warp target.
const int MAX_CONFIGS = 1024;
EGLConfig configs[MAX_CONFIGS];
EGLint numConfigs = 0;
if ( eglGetConfigs( egl->Display, configs, MAX_CONFIGS, &numConfigs ) == EGL_FALSE )
{
ALOGE( " eglGetConfigs() failed: %s", EglErrorString( eglGetError() ) );
return;
}
const EGLint configAttribs[] =
{
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8, // need alpha for the multi-pass timewarp compositor
EGL_DEPTH_SIZE, 24,
EGL_STENCIL_SIZE, 8,
EGL_SAMPLES, 0,
EGL_NONE
};
egl->Config = 0;
for ( int i = 0; i < numConfigs; i++ )
{
EGLint value = 0;
eglGetConfigAttrib( egl->Display, configs[i], EGL_RENDERABLE_TYPE, &value );
if ( ( value & EGL_OPENGL_ES3_BIT_KHR ) != EGL_OPENGL_ES3_BIT_KHR )
{
continue;
}
// The pbuffer config also needs to be compatible with normal window rendering
// so it can share textures with the window context.
eglGetConfigAttrib( egl->Display, configs[i], EGL_SURFACE_TYPE, &value );
if ( ( value & ( EGL_WINDOW_BIT | EGL_PBUFFER_BIT ) ) != ( EGL_WINDOW_BIT | EGL_PBUFFER_BIT ) )
{
continue;
}
int j = 0;
for ( ; configAttribs[j] != EGL_NONE; j += 2 )
{
eglGetConfigAttrib( egl->Display, configs[i], configAttribs[j], &value );
if ( value != configAttribs[j + 1] )
{
break;
}
}
if ( configAttribs[j] == EGL_NONE )
{
egl->Config = configs[i];
break;
}
}
if ( egl->Config == 0 )
{
ALOGE( " eglChooseConfig() failed: %s", EglErrorString( eglGetError() ) );
return;
}
EGLint contextAttribs[] =
{
EGL_CONTEXT_CLIENT_VERSION, 3,
EGL_NONE
};
ALOGV( " Context = eglCreateContext( Display, Config, EGL_NO_CONTEXT, contextAttribs )" );
egl->Context = eglCreateContext( egl->Display, egl->Config, ( shareEgl != NULL ) ? shareEgl->Context : EGL_NO_CONTEXT, contextAttribs );
if ( egl->Context == EGL_NO_CONTEXT )
{
ALOGE( " eglCreateContext() failed: %s", EglErrorString( eglGetError() ) );
return;
}
const EGLint surfaceAttribs[] =
{
EGL_WIDTH, 16,
EGL_HEIGHT, 16,
EGL_NONE
};
ALOGV( " TinySurface = eglCreatePbufferSurface( Display, Config, surfaceAttribs )" );
egl->TinySurface = eglCreatePbufferSurface( egl->Display, egl->Config, surfaceAttribs );
if ( egl->TinySurface == EGL_NO_SURFACE )
{
ALOGE( " eglCreatePbufferSurface() failed: %s", EglErrorString( eglGetError() ) );
eglDestroyContext( egl->Display, egl->Context );
egl->Context = EGL_NO_CONTEXT;
return;
}
ALOGV( " eglMakeCurrent( Display, TinySurface, TinySurface, Context )" );
if ( eglMakeCurrent( egl->Display, egl->TinySurface, egl->TinySurface, egl->Context ) == EGL_FALSE )
{
ALOGE( " eglMakeCurrent() failed: %s", EglErrorString( eglGetError() ) );
eglDestroySurface( egl->Display, egl->TinySurface );
eglDestroyContext( egl->Display, egl->Context );
egl->Context = EGL_NO_CONTEXT;
return;
}
}
static void ovrEgl_DestroyContext( ovrEgl * egl )
{
if ( egl->Display != 0 )
{
ALOGE( " eglMakeCurrent( Display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT )" );
if ( eglMakeCurrent( egl->Display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT ) == EGL_FALSE )
{
ALOGE( " eglMakeCurrent() failed: %s", EglErrorString( eglGetError() ) );
}
}
if ( egl->Context != EGL_NO_CONTEXT )
{
ALOGE( " eglDestroyContext( Display, Context )" );
if ( eglDestroyContext( egl->Display, egl->Context ) == EGL_FALSE )
{
ALOGE( " eglDestroyContext() failed: %s", EglErrorString( eglGetError() ) );
}
egl->Context = EGL_NO_CONTEXT;
}
if ( egl->TinySurface != EGL_NO_SURFACE )
{
ALOGE( " eglDestroySurface( Display, TinySurface )" );
if ( eglDestroySurface( egl->Display, egl->TinySurface ) == EGL_FALSE )
{
ALOGE( " eglDestroySurface() failed: %s", EglErrorString( eglGetError() ) );
}
egl->TinySurface = EGL_NO_SURFACE;
}
if ( egl->Display != 0 )
{
ALOGE( " eglTerminate( Display )" );
if ( eglTerminate( egl->Display ) == EGL_FALSE )
{
ALOGE( " eglTerminate() failed: %s", EglErrorString( eglGetError() ) );
}
egl->Display = 0;
}
}
/*
================================================================================
ovrFramebuffer
================================================================================
*/
static void ovrFramebuffer_Clear( ovrFramebuffer * frameBuffer )
{
frameBuffer->Width = 0;
frameBuffer->Height = 0;
frameBuffer->Multisamples = 0;
frameBuffer->TextureSwapChainLength = 0;
frameBuffer->ProcessingTextureSwapChainIndex = 0;
frameBuffer->ReadyTextureSwapChainIndex = 0;
frameBuffer->ColorTextureSwapChain = NULL;
frameBuffer->DepthBuffers = NULL;
frameBuffer->FrameBuffers = NULL;
}
typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEEXTPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLsizei samples);
#if !defined(GL_OVR_multiview)
/// static const int GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_NUM_VIEWS_OVR = 0x9630;
/// static const int GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_BASE_VIEW_INDEX_OVR = 0x9632;
/// static const int GL_MAX_VIEWS_OVR = 0x9631;
typedef void(GL_APIENTRY* PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC)(
GLenum target,
GLenum attachment,
GLuint texture,
GLint level,
GLint baseViewIndex,
GLsizei numViews);
#endif
#if !defined(GL_OVR_multiview_multisampled_render_to_texture)
typedef void(GL_APIENTRY* PFNGLFRAMEBUFFERTEXTUREMULTISAMPLEMULTIVIEWOVRPROC)(
GLenum target,
GLenum attachment,
GLuint texture,
GLint level,
GLsizei samples,
GLint baseViewIndex,
GLsizei numViews);
#endif
static bool ovrFramebuffer_Create(
ovrFramebuffer* frameBuffer,
const bool useMultiview,
const GLenum colorFormat,
const int width,
const int height,
const int multisamples) {
PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC glRenderbufferStorageMultisampleEXT =
(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC)eglGetProcAddress(
"glRenderbufferStorageMultisampleEXT");
PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEEXTPROC glFramebufferTexture2DMultisampleEXT =
(PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEEXTPROC)eglGetProcAddress(
"glFramebufferTexture2DMultisampleEXT");
PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC glFramebufferTextureMultiviewOVR =
(PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC)eglGetProcAddress(
"glFramebufferTextureMultiviewOVR");
PFNGLFRAMEBUFFERTEXTUREMULTISAMPLEMULTIVIEWOVRPROC glFramebufferTextureMultisampleMultiviewOVR =
(PFNGLFRAMEBUFFERTEXTUREMULTISAMPLEMULTIVIEWOVRPROC)eglGetProcAddress(
"glFramebufferTextureMultisampleMultiviewOVR");
frameBuffer->Width = width;
frameBuffer->Height = height;
frameBuffer->Multisamples = multisamples;
frameBuffer->UseMultiview =
(useMultiview && (glFramebufferTextureMultiviewOVR != NULL)) ? true : false;
frameBuffer->ColorTextureSwapChain = vrapi_CreateTextureSwapChain3(
frameBuffer->UseMultiview ? VRAPI_TEXTURE_TYPE_2D_ARRAY : VRAPI_TEXTURE_TYPE_2D,
colorFormat,
width,
height,
1,
3);
frameBuffer->TextureSwapChainLength =
vrapi_GetTextureSwapChainLength(frameBuffer->ColorTextureSwapChain);
frameBuffer->DepthBuffers =
(GLuint*)malloc(frameBuffer->TextureSwapChainLength * sizeof(GLuint));
frameBuffer->FrameBuffers =
(GLuint*)malloc(frameBuffer->TextureSwapChainLength * sizeof(GLuint));
ALOGV(" frameBuffer->UseMultiview = %d", frameBuffer->UseMultiview);
for (int i = 0; i < frameBuffer->TextureSwapChainLength; i++) {
// Create the color buffer texture.
const GLuint colorTexture =
vrapi_GetTextureSwapChainHandle(frameBuffer->ColorTextureSwapChain, i);
GLenum colorTextureTarget = frameBuffer->UseMultiview ? GL_TEXTURE_2D_ARRAY : GL_TEXTURE_2D;
GL(glBindTexture(colorTextureTarget, colorTexture));
GL(glTexParameteri(colorTextureTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER));
GL(glTexParameteri(colorTextureTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER));
GLfloat borderColor[] = {0.0f, 0.0f, 0.0f, 0.0f};
GL(glTexParameterfv(colorTextureTarget, GL_TEXTURE_BORDER_COLOR, borderColor));
GL(glTexParameteri(colorTextureTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
GL(glTexParameteri(colorTextureTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
GL(glBindTexture(colorTextureTarget, 0));
if (frameBuffer->UseMultiview) {
// Create the depth buffer texture.
GL(glGenTextures(1, &frameBuffer->DepthBuffers[i]));
GL(glBindTexture(GL_TEXTURE_2D_ARRAY, frameBuffer->DepthBuffers[i]));
GL(glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_DEPTH_COMPONENT24, width, height, 2));
GL(glBindTexture(GL_TEXTURE_2D_ARRAY, 0));
// Create the frame buffer.
GL(glGenFramebuffers(1, &frameBuffer->FrameBuffers[i]));
GL(glBindFramebuffer(GL_DRAW_FRAMEBUFFER, frameBuffer->FrameBuffers[i]));
if (multisamples > 1 && (glFramebufferTextureMultisampleMultiviewOVR != NULL)) {
GL(glFramebufferTextureMultisampleMultiviewOVR(
GL_DRAW_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
frameBuffer->DepthBuffers[i],
0 /* level */,
multisamples /* samples */,
0 /* baseViewIndex */,
2 /* numViews */));
GL(glFramebufferTextureMultisampleMultiviewOVR(
GL_DRAW_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
colorTexture,
0 /* level */,
multisamples /* samples */,
0 /* baseViewIndex */,
2 /* numViews */));
} else {
GL(glFramebufferTextureMultiviewOVR(
GL_DRAW_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
frameBuffer->DepthBuffers[i],
0 /* level */,
0 /* baseViewIndex */,
2 /* numViews */));
GL(glFramebufferTextureMultiviewOVR(
GL_DRAW_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
colorTexture,
0 /* level */,
0 /* baseViewIndex */,
2 /* numViews */));
}
GL(GLenum renderFramebufferStatus = glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER));
GL(glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0));
if (renderFramebufferStatus != GL_FRAMEBUFFER_COMPLETE) {
ALOGE(
"Incomplete frame buffer object: %s",
GlFrameBufferStatusString(renderFramebufferStatus));
return false;
}
} else {
if (multisamples > 1 && glRenderbufferStorageMultisampleEXT != NULL &&
glFramebufferTexture2DMultisampleEXT != NULL) {
// Create multisampled depth buffer.
GL(glGenRenderbuffers(1, &frameBuffer->DepthBuffers[i]));
GL(glBindRenderbuffer(GL_RENDERBUFFER, frameBuffer->DepthBuffers[i]));
GL(glRenderbufferStorageMultisampleEXT(
GL_RENDERBUFFER, multisamples, GL_DEPTH_COMPONENT24, width, height));
GL(glBindRenderbuffer(GL_RENDERBUFFER, 0));
// Create the frame buffer.
// NOTE: glFramebufferTexture2DMultisampleEXT only works with GL_FRAMEBUFFER.
GL(glGenFramebuffers(1, &frameBuffer->FrameBuffers[i]));
GL(glBindFramebuffer(GL_FRAMEBUFFER, frameBuffer->FrameBuffers[i]));
GL(glFramebufferTexture2DMultisampleEXT(
GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D,
colorTexture,
0,
multisamples));
GL(glFramebufferRenderbuffer(
GL_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER,
frameBuffer->DepthBuffers[i]));
GL(GLenum renderFramebufferStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER));
GL(glBindFramebuffer(GL_FRAMEBUFFER, 0));
if (renderFramebufferStatus != GL_FRAMEBUFFER_COMPLETE) {
ALOGE(
"Incomplete frame buffer object: %s",
GlFrameBufferStatusString(renderFramebufferStatus));
return false;
}
} else {
// Create depth buffer.
GL(glGenRenderbuffers(1, &frameBuffer->DepthBuffers[i]));
GL(glBindRenderbuffer(GL_RENDERBUFFER, frameBuffer->DepthBuffers[i]));
GL(glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height));
GL(glBindRenderbuffer(GL_RENDERBUFFER, 0));
// Create the frame buffer.
GL(glGenFramebuffers(1, &frameBuffer->FrameBuffers[i]));
GL(glBindFramebuffer(GL_DRAW_FRAMEBUFFER, frameBuffer->FrameBuffers[i]));
GL(glFramebufferRenderbuffer(
GL_DRAW_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER,
frameBuffer->DepthBuffers[i]));
GL(glFramebufferTexture2D(
GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorTexture, 0));
GL(GLenum renderFramebufferStatus = glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER));
GL(glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0));
if (renderFramebufferStatus != GL_FRAMEBUFFER_COMPLETE) {
ALOGE(
"Incomplete frame buffer object: %s",
GlFrameBufferStatusString(renderFramebufferStatus));
return false;
}
}
}
}
return true;
}
void ovrFramebuffer_Destroy(ovrFramebuffer* frameBuffer) {
GL(glDeleteFramebuffers(frameBuffer->TextureSwapChainLength, frameBuffer->FrameBuffers));
if (frameBuffer->UseMultiview) {
GL(glDeleteTextures(frameBuffer->TextureSwapChainLength, frameBuffer->DepthBuffers));
} else {
GL(glDeleteRenderbuffers(frameBuffer->TextureSwapChainLength, frameBuffer->DepthBuffers));
}
vrapi_DestroyTextureSwapChain(frameBuffer->ColorTextureSwapChain);
free(frameBuffer->DepthBuffers);
free(frameBuffer->FrameBuffers);
ovrFramebuffer_Clear(frameBuffer);
}
void ovrFramebuffer_SetCurrent( ovrFramebuffer * frameBuffer )
{
GL( glBindFramebuffer( GL_FRAMEBUFFER, frameBuffer->FrameBuffers[frameBuffer->ProcessingTextureSwapChainIndex] ) );
}
void ovrFramebuffer_SetNone()
{
GL( glBindFramebuffer( GL_DRAW_FRAMEBUFFER, 0 ) );
}
void ovrFramebuffer_Resolve( ovrFramebuffer * frameBuffer )
{
// Discard the depth buffer, so the tiler won't need to write it back out to memory.
const GLenum depthAttachment[1] = { GL_DEPTH_ATTACHMENT };
glInvalidateFramebuffer( GL_DRAW_FRAMEBUFFER, 1, depthAttachment );
}
void ovrFramebuffer_Advance( ovrFramebuffer * frameBuffer )
{
// Advance to the next texture from the set.
frameBuffer->ReadyTextureSwapChainIndex = frameBuffer->ProcessingTextureSwapChainIndex;
frameBuffer->ProcessingTextureSwapChainIndex = ( frameBuffer->ProcessingTextureSwapChainIndex + 1 ) % frameBuffer->TextureSwapChainLength;
}
void ovrFramebuffer_ClearEdgeTexels( ovrFramebuffer * frameBuffer )
{
GL( glEnable( GL_SCISSOR_TEST ) );
GL( glViewport( 0, 0, frameBuffer->Width, frameBuffer->Height ) );
// Explicitly clear the border texels to black because OpenGL-ES does not support GL_CLAMP_TO_BORDER.
// Clear to fully opaque black.
GL( glClearColor( 0.0f, 0.0f, 0.0f, 1.0f ) );
// bottom
GL( glScissor( 0, 0, frameBuffer->Width, 1 ) );
GL( glClear( GL_COLOR_BUFFER_BIT ) );
// top
GL( glScissor( 0, frameBuffer->Height - 1, frameBuffer->Width, 1 ) );
GL( glClear( GL_COLOR_BUFFER_BIT ) );
// left
GL( glScissor( 0, 0, 1, frameBuffer->Height ) );
GL( glClear( GL_COLOR_BUFFER_BIT ) );
// right
GL( glScissor( frameBuffer->Width - 1, 0, 1, frameBuffer->Height ) );
GL( glClear( GL_COLOR_BUFFER_BIT ) );
GL( glScissor( 0, 0, 0, 0 ) );
GL( glDisable( GL_SCISSOR_TEST ) );
}
/*
================================================================================
ovrRenderer
================================================================================
*/
void ovrRenderer_Clear( ovrRenderer * renderer )
{
ovrFramebuffer_Clear( &renderer->FrameBuffer );
renderer->ProjectionMatrix = ovrMatrix4f_CreateIdentity();
renderer->NumBuffers = VRAPI_FRAME_LAYER_EYE_MAX;
}
float Doom3Quest_GetFOV();
void ovrRenderer_Create( int width, int height, ovrRenderer * renderer, const ovrJava * java )
{
renderer->NumBuffers = 1; // Multiview
//Now using a symmetrical render target, based on the horizontal FOV
Doom3Quest_GetFOV();
// Create the multi view frame buffer
ovrFramebuffer_Create( &renderer->FrameBuffer,
true,
GL_RGBA8,
width,
height,
NUM_MULTI_SAMPLES );
// Setup the projection matrix.
renderer->ProjectionMatrix = ovrMatrix4f_CreateProjectionFov(
vrFOV, vrFOV, 0.0f, 0.0f, 1.0f, 0.0f );
}
void ovrRenderer_Destroy( ovrRenderer * renderer )
{
ovrFramebuffer_Destroy( &renderer->FrameBuffer );
renderer->ProjectionMatrix = ovrMatrix4f_CreateIdentity();
}
#ifndef EPSILON
#define EPSILON 0.001f
#endif
static ovrVector3f normalizeVec(ovrVector3f 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);
ovrVector3f 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 ovrVector3f forward, const ovrVector3f right, const ovrVector3f 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(ovrQuatf 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(radians(rotation[0]), radians(rotation[1]), radians(rotation[2]));
mat = ovrMatrix4f_Multiply(&mat, &rot);
}
ovrVector4f v1 = {0, 0, -1, 0};
ovrVector4f v2 = {1, 0, 0, 0};
ovrVector4f v3 = {0, 1, 0, 0};
ovrVector4f forwardInVRSpace = ovrVector4f_MultiplyMatrix4f(&mat, &v1);
ovrVector4f rightInVRSpace = ovrVector4f_MultiplyMatrix4f(&mat, &v2);
ovrVector4f upInVRSpace = ovrVector4f_MultiplyMatrix4f(&mat, &v3);
ovrVector3f forward = {-forwardInVRSpace.z, -forwardInVRSpace.x, forwardInVRSpace.y};
ovrVector3f right = {-rightInVRSpace.z, -rightInVRSpace.x, rightInVRSpace.y};
ovrVector3f up = {-upInVRSpace.z, -upInVRSpace.x, upInVRSpace.y};
ovrVector3f forwardNormal = normalizeVec(forward);
ovrVector3f rightNormal = normalizeVec(right);
ovrVector3f upNormal = normalizeVec(up);
GetAnglesFromVectors(forwardNormal, rightNormal, upNormal, out);
return;
}
void updateHMDOrientation()
{
//Position
VectorSubtract(vr.hmdposition_last, vr.hmdposition, vr.hmdposition_delta);
//Keep this for our records
VectorCopy(vr.hmdposition, vr.hmdposition_last);
//Orientation
VectorSubtract(vr.hmdorientation_last, vr.hmdorientation, vr.hmdorientation_delta);
//Keep this for our records
VectorCopy(vr.hmdorientation, vr.hmdorientation_last);
}
void setHMDPosition( float x, float y, float z, float yaw )
{
VectorSet(vr.hmdposition, x, y, z);
}
/*
========================
Doom3Quest_Vibrate
========================
*/
//0 = left, 1 = right
float vibration_channel_duration[2] = {0.0f, 0.0f};
float vibration_channel_intensity[2] = {0.0f, 0.0f};
void Doom3Quest_Vibrate(int duration, int channel, float intensity )
{
if (vibration_channel_duration[channel] > 0.0f)
return;
if (vibration_channel_duration[channel] == -1.0f && duration != 0.0f)
return;
vibration_channel_duration[channel] = duration;
vibration_channel_intensity[channel] = intensity;
}
void VR_Doom3Main(int argc, char** argv);
void VR_GetMove( float *joy_forward, float *joy_side, float *hmd_forward, float *hmd_side, float *up, float *yaw, float *pitch, float *roll )
{
*joy_forward = remote_movementForward;
*hmd_forward = positional_movementForward;
*up = remote_movementUp;
*joy_side = remote_movementSideways;
*hmd_side = positional_movementSideways;
*yaw = vr.hmdorientation[YAW] + snapTurn;
*pitch = vr.hmdorientation[PITCH];
*roll = vr.hmdorientation[ROLL];
}
/*
================================================================================
ovrRenderThread
================================================================================
*/
/*
================================================================================
ovrApp
================================================================================
*/
#define MAX_TRACKING_SAMPLES 4