ppsspp/VR/VRFramebuffer.h
2022-07-08 14:44:20 +02:00

288 lines
7.3 KiB
C

#ifndef __VR_FRAMEBUFFER
#define __VR_FRAMEBUFFER
//OpenXR
#define XR_USE_GRAPHICS_API_OPENGL_ES 1
#define XR_USE_PLATFORM_ANDROID 1
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <jni.h>
#include <math.h>
#include <openxr.h>
#include <openxr_platform.h>
#define MATH_PI 3.14159265358979323846f
#define ALOGE(...) printf(__VA_ARGS__)
#define ALOGV(...) printf(__VA_ARGS__)
typedef union {
XrCompositionLayerProjection Projection;
XrCompositionLayerCylinderKHR Cylinder;
} ovrCompositorLayer_Union;
enum { ovrMaxLayerCount = 1 };
enum { ovrMaxNumEyes = 2 };
#define GL(func) func;
#define OXR(func) func;
typedef struct {
JavaVM* Vm;
jobject ActivityObject;
JNIEnv* Env;
} ovrJava;
typedef struct {
XrSwapchain Handle;
uint32_t Width;
uint32_t Height;
} ovrSwapChain;
typedef struct {
EGLint MajorVersion;
EGLint MinorVersion;
EGLDisplay Display;
EGLConfig Config;
EGLSurface TinySurface;
EGLSurface MainSurface;
EGLContext Context;
} ovrEgl;
typedef struct {
int Width;
int Height;
uint32_t TextureSwapChainLength;
uint32_t TextureSwapChainIndex;
ovrSwapChain ColorSwapChain;
XrSwapchainImageOpenGLESKHR* ColorSwapChainImage;
unsigned int* DepthBuffers;
unsigned int* FrameBuffers;
} ovrFramebuffer;
typedef struct {
ovrFramebuffer FrameBuffer[ovrMaxNumEyes];
} ovrRenderer;
typedef struct {
int Active;
XrPosef Pose;
} ovrTrackedController;
typedef struct {
ovrEgl Egl;
int Focused;
XrInstance Instance;
XrSession Session;
XrViewConfigurationProperties ViewportConfig;
XrViewConfigurationView ViewConfigurationView[ovrMaxNumEyes];
XrSystemId SystemId;
XrSpace HeadSpace;
XrSpace StageSpace;
XrSpace FakeStageSpace;
XrSpace CurrentSpace;
int SessionActive;
int SwapInterval;
// These threads will be marked as performance threads.
int MainThreadTid;
int RenderThreadTid;
ovrCompositorLayer_Union Layers[ovrMaxLayerCount];
int LayerCount;
int TouchPadDownLastFrame;
ovrRenderer Renderer;
ovrTrackedController TrackedController[2];
} ovrApp;
typedef struct {
float M[4][4];
} ovrMatrix4f;
typedef enum ovrButton_ {
ovrButton_A = 0x00000001, // Set for trigger pulled on the Gear VR and Go Controllers
ovrButton_B = 0x00000002,
ovrButton_RThumb = 0x00000004,
ovrButton_RShoulder = 0x00000008,
ovrButton_X = 0x00000100,
ovrButton_Y = 0x00000200,
ovrButton_LThumb = 0x00000400,
ovrButton_LShoulder = 0x00000800,
ovrButton_Up = 0x00010000,
ovrButton_Down = 0x00020000,
ovrButton_Left = 0x00040000,
ovrButton_Right = 0x00080000,
ovrButton_Enter = 0x00100000, //< Set for touchpad click on the Go Controller, menu
// button on Left Quest Controller
ovrButton_Back = 0x00200000, //< Back button on the Go Controller (only set when
// a short press comes up)
ovrButton_GripTrigger = 0x04000000, //< grip trigger engaged
ovrButton_Trigger = 0x20000000, //< Index Trigger engaged
ovrButton_Joystick = 0x80000000, //< Click of the Joystick
ovrButton_EnumSize = 0x7fffffff
} ovrButton;
typedef struct {
uint64_t frameIndex;
ovrApp appState;
ovrJava java;
float predictedDisplayTime;
} engine_t;
void ovrApp_Clear(ovrApp* app);
void ovrApp_Destroy(ovrApp* app);
int ovrApp_HandleXrEvents(ovrApp* app);
void ovrEgl_CreateContext(ovrEgl* egl, const ovrEgl* shareEgl);
void ovrEgl_DestroyContext(ovrEgl* egl);
void ovrFramebuffer_Acquire(ovrFramebuffer* frameBuffer);
void ovrFramebuffer_Resolve(ovrFramebuffer* frameBuffer);
void ovrFramebuffer_Release(ovrFramebuffer* frameBuffer);
void ovrFramebuffer_SetCurrent(ovrFramebuffer* frameBuffer);
void ovrFramebuffer_SetNone();
void ovrRenderer_Create(
XrSession session,
ovrRenderer* renderer,
int suggestedEyeTextureWidth,
int suggestedEyeTextureHeight);
void ovrRenderer_Destroy(ovrRenderer* renderer);
void ovrTrackedController_Clear(ovrTrackedController* controller);
ovrMatrix4f ovrMatrix4f_Multiply(const ovrMatrix4f* a, const ovrMatrix4f* b);
ovrMatrix4f ovrMatrix4f_CreateRotation(const float radiansX, const float radiansY, const float radiansZ);
ovrMatrix4f ovrMatrix4f_CreateFromQuaternion(const XrQuaternionf* q);
ovrMatrix4f ovrMatrix4f_CreateProjectionFov(
const float fovDegreesX,
const float fovDegreesY,
const float offsetX,
const float offsetY,
const float nearZ,
const float farZ);
XrVector4f XrVector4f_MultiplyMatrix4f(const ovrMatrix4f* a, const XrVector4f* v);
/// THESE METHODS HAVE ORIGIN IN openxr_oculus_helpers.h
static inline double FromXrTime(const XrTime time) {
return (time * 1e-9);
}
static inline XrTime ToXrTime(const double timeInSeconds) {
return (timeInSeconds * 1e9);
}
static inline XrPosef XrPosef_Identity() {
XrPosef r;
r.orientation.x = 0;
r.orientation.y = 0;
r.orientation.z = 0;
r.orientation.w = 1;
r.position.x = 0;
r.position.y = 0;
r.position.z = 0;
return r;
}
static inline float XrVector3f_LengthSquared(const XrVector3f v) {
return v.x * v.x + v.y * v.y + v.z * v.z;;
}
static inline float XrVector3f_Length(const XrVector3f v) {
return sqrtf(XrVector3f_LengthSquared(v));
}
static inline XrVector3f XrVector3f_ScalarMultiply(const XrVector3f v, float scale) {
XrVector3f u;
u.x = v.x * scale;
u.y = v.y * scale;
u.z = v.z * scale;
return u;
}
static inline XrVector3f XrVector3f_Normalized(const XrVector3f v) {
float rcpLen = 1.0f / XrVector3f_Length(v);
return XrVector3f_ScalarMultiply(v, rcpLen);
}
static inline XrQuaternionf XrQuaternionf_CreateFromVectorAngle(
const XrVector3f axis,
const float angle) {
XrQuaternionf r;
if (XrVector3f_LengthSquared(axis) == 0.0f) {
r.x = 0;
r.y = 0;
r.z = 0;
r.w = 1;
return r;
}
XrVector3f unitAxis = XrVector3f_Normalized(axis);
float sinHalfAngle = sinf(angle * 0.5f);
r.w = cosf(angle * 0.5f);
r.x = unitAxis.x * sinHalfAngle;
r.y = unitAxis.y * sinHalfAngle;
r.z = unitAxis.z * sinHalfAngle;
return r;
}
static inline XrQuaternionf XrQuaternionf_Multiply(const XrQuaternionf a, const XrQuaternionf b) {
XrQuaternionf c;
c.x = a.w * b.x + a.x * b.w + a.y * b.z - a.z * b.y;
c.y = a.w * b.y - a.x * b.z + a.y * b.w + a.z * b.x;
c.z = a.w * b.z + a.x * b.y - a.y * b.x + a.z * b.w;
c.w = a.w * b.w - a.x * b.x - a.y * b.y - a.z * b.z;
return c;
}
static inline XrQuaternionf XrQuaternionf_Inverse(const XrQuaternionf q) {
XrQuaternionf r;
r.x = -q.x;
r.y = -q.y;
r.z = -q.z;
r.w = q.w;
return r;
}
static inline XrVector3f XrQuaternionf_Rotate(const XrQuaternionf a, const XrVector3f v) {
XrVector3f r;
XrQuaternionf q = {v.x, v.y, v.z, 0.0f};
XrQuaternionf aq = XrQuaternionf_Multiply(a, q);
XrQuaternionf aInv = XrQuaternionf_Inverse(a);
XrQuaternionf aqaInv = XrQuaternionf_Multiply(aq, aInv);
r.x = aqaInv.x;
r.y = aqaInv.y;
r.z = aqaInv.z;
return r;
}
static inline XrVector3f XrVector3f_Add(const XrVector3f u, const XrVector3f v) {
XrVector3f w;
w.x = u.x + v.x;
w.y = u.y + v.y;
w.z = u.z + v.z;
return w;
}
static inline XrVector3f XrPosef_Transform(const XrPosef a, const XrVector3f v) {
XrVector3f r0 = XrQuaternionf_Rotate(a.orientation, v);
return XrVector3f_Add(r0, a.position);
}
static inline XrPosef XrPosef_Multiply(const XrPosef a, const XrPosef b) {
XrPosef c;
c.orientation = XrQuaternionf_Multiply(a.orientation, b.orientation);
c.position = XrPosef_Transform(a, b.position);
return c;
}
#endif