Final Version

main
Brett 2022-12-13 17:36:01 -05:00
parent 213ad18210
commit c91c62faad
76 changed files with 730 additions and 13225 deletions

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End testing: Dec 12 17:44 EST
End testing: Dec 13 17:35 EST

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Start testing: Dec 13 01:21 EST
Start testing: Dec 13 17:35 EST
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End testing: Dec 13 01:21 EST
End testing: Dec 13 17:35 EST

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Start testing: Dec 12 15:15 EST
Start testing: Dec 13 17:35 EST
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End testing: Dec 12 15:15 EST
End testing: Dec 13 17:35 EST

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@ -30,7 +30,7 @@ namespace Raytracing {
/**
* @return the queue of image bounds which this process needs to do work on
*/
static std::queue<RaycasterImageBounds> getCurrentImageRegionAssociation(RayCaster& raycaster);
static std::queue<RayCasterImageBounds> getCurrentImageRegionAssociation(RayCaster& raycaster);
};
}
#endif

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@ -69,22 +69,30 @@ namespace Raytracing {
}
/**
* Projects an xy coord into world space
* @param x image x coord
* @param y image y coord
* @return a Ray projected from camera position out into the world based on the relative position in the image.
*/
Ray projectRay(PRECISION_TYPE x, PRECISION_TYPE y);
void setPosition(const Vec4& pos) { this->position = pos; }
// the follow utility functions are actually taking forever to get right
// I can't tell if my projection calculation is off or the view calc?
// got to install GLM to test which function works and which does. Maybe they are both bad. or Maybe it's my matrix impl
// or maybe the whole rendering stack sucks
[[nodiscard]] Mat4x4 project() const {
/**
* Creates a projection matrix for use in the OpenGL pipeline.
* @return Mat4x4 containing a standard perspective projection matrix
*/
[[nodiscard]] inline Mat4x4 project() const {
Mat4x4 project{emptyMatrix};
// this should be all it takes to create a mostly correct projection matrix
// the values are transposed because my matrix implementation is terrible.
// This is set up in such a way that it is 1:1 with the CPU ray projection. Meaning when you move the camera in "Debug" mode,
// the rays will be projected from that position and camera look direction.
project.m00(float(1.0 / (aspectRatio * tanFovHalf)));
project.m11(float(1.0 / tanFovHalf));
project.m22(float(-((FAR_PLANE + NEAR_PLANE) / frustumLength)));
// this has been transposed
project.m32(-1);
project.m23(float(-((2 * NEAR_PLANE * FAR_PLANE) / frustumLength)));
//project.m33(0);
@ -95,6 +103,15 @@ namespace Raytracing {
//return Mat4x4{projectG};
}
/**
* Creates a view matrix containing the camera rotation and inverse position.
* the view matrix is used to transform world coordinates into camera space,
* which can than be transformed into screen space using the projection matrix.
* @param yaw yaw of the camera
* @param pitch pitch of the camera
* @param roll NOT SUPPORTED
* @return Mat4x4 containing rotation in the first 3x3 values and -position in the last column
*/
Mat4x4 view(PRECISION_TYPE yaw, PRECISION_TYPE pitch);
[[nodiscard]] inline Vec4 getPosition() const { return position; };
@ -108,55 +125,79 @@ namespace Raytracing {
// the camera's position must be set with setPosition(Vec4);
// uses an internal up vector, assumed to be {0, 1, 0}
// will make the camera look at provided position with respects to the current camera position.
// TODO: update the view matrix. Requires that the view matrix be stored in the camera.
void lookAt(const Vec4& lookAtPos);
};
static Random rnd{-1.0, 1.0};
struct RaycasterImageBounds {
struct RayCasterImageBounds {
int width, height, x, y;
};
class RayCaster {
private:
int maxBounceDepth = 50;
int raysPerPixel = 50;
const unsigned int system_threads = std::thread::hardware_concurrency();
int maxBounceDepth;
int raysPerPixel;
unsigned int finishedThreads = 0;
Camera& camera;
Image& image;
World& world;
std::vector<std::unique_ptr<std::thread>> executors{};
// is the raytracer still running?
bool stillRunning = true;
unsigned int finishedThreads = 0;
unsigned int system_threads = std::thread::hardware_concurrency();
// yes this is actually the only sync we need between the threads
// and compared to the actual runtime of the raytracing it's very small!
std::mutex queueSync;
std::queue<RaycasterImageBounds>* unprocessedQuads = nullptr;
Vec4 raycasti(const Ray& ray, int depth);
// the queue containing the image bounds to be rendered.
std::queue<RayCasterImageBounds>* unprocessedQuads = nullptr;
std::vector<std::unique_ptr<std::thread>> executors{};
/**
* Does the actual ray casting algorithm. Simulates up to maxBounceDepth ray depth.
* @param ray ray to begin with
* @return the overall average color of the ray
*/
Vec4 raycast(const Ray& ray);
void runRaycastingAlgorithm(RaycasterImageBounds imageBounds, int loopX, int loopY);
/**
*
* @param imageBounds bounds to work on
* @param loopX the current x position to work on, between 0 and imageBounds.width
* @param loopY the current y position to work on, between 0 and imageBounds.height
*/
void runRaycastingAlgorithm(RayCasterImageBounds imageBounds, int loopX, int loopY);
void setupQueue(const std::vector<RaycasterImageBounds>& bounds);
/**
* Creates the queue with the provided bounds
*/
void setupQueue(const std::vector<RayCasterImageBounds>& bounds);
public:
RayCaster(Camera& c, Image& i, World& world, Parser& p):
camera(c), image(i), world(world) {
world.generateBVH();
maxBounceDepth = std::stoi(p.getOptionValue("--maxRayDepth"));
raysPerPixel = std::stoi(p.getOptionValue("--raysPerPixel"));
}
inline void updateRayInfo(int maxBounce, int perPixel) {
raysPerPixel = perPixel;
maxBounceDepth = maxBounce;
}
inline void resetRayInfo() {
raysPerPixel = 50;
maxBounceDepth = 50;
}
std::vector<RaycasterImageBounds> partitionScreen(int threads = -1);
/**
* divides the screen into image bounds
* @param threads number of threads that will determine how many cuts to the screen is required
* @return a list of bounds
*/
std::vector<RayCasterImageBounds> partitionScreen(int threads = -1);
/**
* Updates the thread value based on conditions, used for setting up the actual threads for execution.
* @param threads reference to the value which will be updated.
*/
inline void updateThreadValue(int& threads) const {
if (threads < 0 || threads == 1)
threads = 1;
@ -166,28 +207,42 @@ namespace Raytracing {
}
}
/**
* Creates a random vector in the unit sphere.
*/
inline static Vec4 randomUnitVector() {
return Vec4(rnd.getDouble(), rnd.getDouble(), rnd.getDouble()).normalize();
}
RayCaster(Camera& c, Image& i, World& world, const Parser& p):
camera(c), image(i), world(world) {
world.generateBVH();
}
/**
* Runs the std::thread implementation
* @param threads number of threads to use
*/
void runSTDThread(int threads = -1);
/**
* Runs the OpenMP implementation
* @param threads number of threads to use
*/
void runOpenMP(int threads = -1);
void runMPI(std::queue<RaycasterImageBounds> bounds);
[[nodiscard]] inline bool areThreadsStillRunning() const { return finishedThreads == executors.size(); }
/**
* ran by MPI
* @param bounds bounds that get processed by this process
*/
void runMPI(std::queue<RayCasterImageBounds> bounds);
/**
* Blocking call that waits for all the threads to finish exeuction
*/
inline void join() {
for (auto& p : executors)
p->join();
}
/**
* Joins all joinable threads and clears the thread list.
*/
void deleteThreads() {
for (auto& p : executors) {
// wait for all threads to exit before trying to delete them.

View File

@ -11,7 +11,9 @@
#include <config.h>
#ifdef COMPILE_GUI
#include <graphics/gl/gl.h>
#endif
@ -55,6 +57,7 @@ namespace Raytracing {
// returns true if the ray was scattered along with the scattered ray, otherwise will return false with empty ray.
// the returned vec4 is the attenuation color
[[nodiscard]] virtual ScatterResults scatter(const Ray& ray, const HitData& hitData) const = 0;
// emission value for this material
// this allows for a material to glow slightly or emit full on light
// the light can of course be of any color
@ -62,11 +65,14 @@ namespace Raytracing {
[[nodiscard]] virtual Vec4 emission(PRECISION_TYPE u, PRECISION_TYPE v, const Vec4& hitPoint) const { return {}; }
[[nodiscard]] Vec4 getBaseColor() const { return baseColor; }
virtual ~Material() = default;
};
struct DebugBVHData {
void* bvhTree;
// I actually currently have no idea what this means
// I suspect it's legacy code from when I was debugging the BVHs
bool isRegular;
};
@ -80,18 +86,27 @@ namespace Raytracing {
#endif
public:
Object(Material* material, const Vec4& position): material(material), position(position), aabb({}) {};
// return true if the ray intersects with this object, only between min and max
[[nodiscard]] virtual HitData checkIfHit(const Ray& ray, PRECISION_TYPE min, PRECISION_TYPE max) const = 0;
[[nodiscard]] Material* getMaterial() const { return material; }
[[nodiscard]] virtual AABB& getAABB() { return aabb; }
// FIXME: Use of void* is inadvisable. Although this is only for debug consider another method.
[[nodiscard]] virtual DebugBVHData getBVHTree() { return {nullptr, false}; }
[[nodiscard]] Vec4 getPosition() const { return position; }
virtual void setAABB(const AABB& ab) { this->aabb = ab; }
#ifdef COMPILE_GUI
[[nodiscard]] inline VAO* getVAO() { return vao; }
#endif
virtual ~Object() = default;
};
}

View File

@ -47,6 +47,8 @@ namespace Raytracing {
TriangulatedModel model{data};
this->triangles = model.triangles;
this->aabb = std::move(model.aabb);
// a required step to generate a BVH however we aren't using the triangle bvh due to issues with it
// so ignore this and sequential triangle BVH nonsense.
std::vector<TriangleBVHObject> triangulatedObjects;
for (const auto& tri : triangles) {
TriangleBVHObject triangleObject;
@ -152,8 +154,10 @@ namespace Raytracing {
inline void add(Object* object) {
objects.push_back(object);
#ifdef COMPILE_GUI
if (object->getBVHTree().bvhTree != nullptr && !object->getBVHTree().isRegular)
new DebugBVH{(TriangleBVHTree*) object->getBVHTree().bvhTree, m_config.worldShader};
// this will show up in the debug mode
// disabled because we aren't using object local BVHs
//if (object->getBVHTree().bvhTree != nullptr && !object->getBVHTree().isRegular)
// new DebugBVH{(TriangleBVHTree*) object->getBVHTree().bvhTree, m_config.worldShader};
#endif
}
@ -165,6 +169,13 @@ namespace Raytracing {
[[nodiscard]] inline std::vector<Object*> getObjectsInWorld() { return objects; }
/**
* goes through the entire world using the BVH to determine if the ray has hit anything
* @param ray ray to check
* @param min min of the ray
* @param max max of the ray
* @return HitData about the closest object that was hit.
*/
[[nodiscard]] virtual std::pair<HitData, Object*> checkIfHit(const Ray& ray, PRECISION_TYPE min, PRECISION_TYPE max) const;
~World();

View File

@ -11,10 +11,14 @@
#include <string>
#include <engine/math/bvh.h>
/**
* This stuff can safely be ignored as it is purely for me to debug
*/
namespace Raytracing {
class DebugUI {
public:
static void render(const std::function<void()>& generalTab);
static void registerTab(const std::string& name, const std::function<void()>& tabFunc);
};
@ -22,21 +26,28 @@ namespace Raytracing {
public:
virtual void render() = 0;
};
class DebugMenus {
public:
static void add(const std::shared_ptr<DebugObject>& object);
static void remove(DebugObject* object);
static void render();
};
class DebugBVH : public DebugObject {
private:
BVHTree* m_bvhTree;
TriangleBVHTree* m_triangleBVHTree;
BVHTree* m_bvhTree = nullptr;
TriangleBVHTree* m_triangleBVHTree = nullptr;
Shader& m_shader;
public:
explicit DebugBVH(BVHTree* bvhTree, Shader& shader);
explicit DebugBVH(TriangleBVHTree* bvhTree, Shader& shader);
void render();
~DebugBVH();
};
}

View File

@ -123,6 +123,7 @@ class Shapes {
0.0f, 0.0f,
0.0f, 1.0f
};
static cubeVertexBuilder getCubeExtends(float xRadius, float yRadius, float zRadius) {
cubeVertexBuilder builder{};
// Can we use the transformation matrix? Yes.
@ -186,6 +187,7 @@ class Texture {
protected:
unsigned int textureID;
int width, height, channels;
unsigned char* loadTexture(const std::string& path);
Raytracing::Image* _image = nullptr;
@ -195,13 +197,22 @@ class Texture {
Texture(Texture&&) noexcept = delete; // Disable move constructor.
Texture& operator=(Texture&&) noexcept = delete; // Disable Move Assignment
Texture();
explicit Texture(const std::string& path);
explicit Texture(Raytracing::Image* image);
~Texture();
// updates the texture on the GPU using the image pointer stored in the texture class. Does nothing if not using image
void updateImage();
void bind() const;
void unbind();
void enableGlTextures(int textureCount);
[[nodiscard]] inline unsigned int getTextureID() const { return textureID; }
};
@ -210,18 +221,24 @@ class VAO {
unsigned int VaoID, instanceVBO;
std::vector<unsigned int> VBOs;
int drawCount = -1, currentTransforms = -1;
// vertex data
unsigned int storeData(int attrNumber, int coordSize, int stride, long offset, int length, const float* data);
// element data (indices)
unsigned int storeData(int length, const unsigned int* data);
// instance data
unsigned int createInstanceVBO(int count, int bytePerInstance);
// used much in the same way that store data sets an attribute where the data is expected
// except this sets based on the master instance vbo, telling the GPU where to use the data and when.
void addInstancedAttribute(int attribute, int dataSize, int dataLengthBytes, int offset) const;
// disable bad constructors
// we can't just make copies of GPU objects like we can on the CPU. It's stupidly expensive.
VAO() = default;
VAO(const VAO& that); // Disable Copy Constructor
VAO& operator=(const VAO& that); // Disable Copy Assignment
public:
@ -229,17 +246,25 @@ class VAO {
VAO& operator=(VAO&&) noexcept = delete; // Disable Move Assignment
explicit VAO(const std::vector<Raytracing::Triangle>& triangles);
explicit VAO(const std::vector<std::shared_ptr<Raytracing::Triangle>>& triangles);
VAO(const std::vector<float>& verts, const std::vector<float>& uvs, const std::vector<unsigned int>& indices);
VAO(const std::vector<float>& verts, const std::vector<float>& uvs);
void bind() const;
void unbind();
// draws as if it where a fullscreen quad (literally used for that)
void draw() const;
// draw as if it's a box that we need to bulk draw.
void draw(Raytracing::Shader& shader, const std::vector<Raytracing::Vec4>& positions) const;
void draw(Raytracing::Shader& shader);
~VAO();
};

File diff suppressed because it is too large Load Diff

View File

@ -9,13 +9,16 @@
#include "engine/util/std.h"
#include "engine/math/vectors.h"
#include <config.h>
#ifndef USE_GLFW
#include <GL/gl.h>
#include <GLES3/gl32.h>
#include <GL/glx.h>
#include <GL/glu.h>
#else
#include <graphics/gl/glad/gl.h>
#endif
@ -37,29 +40,46 @@ namespace Raytracing {
unsigned int geometryShaderID = 0;
unsigned int tessalationShaderID = 0;
std::unordered_map<std::string, IntDefaultedToMinusOne> uniformVars;
static unsigned int loadShader(const std::string& file, int type);
// loads from a string rather than a file!
static unsigned int loadShaderString(const std::string& str, int type);
GLint getUniformLocation(const std::string& name);
static void checkCompileErrors(unsigned int shader, const std::string& type, const std::string& shaderPath);
public:
Shader(const std::string& vertex, const std::string& fragment, bool loadString = false);
Shader(const std::string& vertex, const std::string& geometry, const std::string& fragment, bool loadString = false);
// used to set the location of VAOs to the in variables in opengl shaders.
// used to set the location of VAOs to the in variables in opengl shaders. (using layouts instead)
void bindAttribute(int attribute, const std::string& name);
// used to set location of shared UBOs
// used to set location of shared UBOs (unused)
void setUniformBlockLocation(const std::string& name, int location);
// set various data-types.
void setBool(const std::string& name, bool value);
void setInt(const std::string& name, int value);
void setFloat(const std::string& name, float value);
void setMatrix(const std::string& name, Mat4x4& matrix);
void setVec4(const std::string& name, const Vec4& vec);
void setVec3(const std::string& name, const Vec4& vec);
void setVec2(const std::string& name, float x, float y);
void setVec3(const std::string& name, float x, float y, float z);
void setVec4(const std::string& name, float x, float y, float z, float w);
void use();
~Shader();
};

View File

@ -41,10 +41,14 @@
namespace Raytracing {
void drawQuad();
void deleteQuad();
#ifdef USE_GLFW
/**
* The class used to create and handle window management.
*/
class XWindow {
private:
GLFWwindow* window;
@ -56,23 +60,41 @@ namespace Raytracing {
PRECISION_TYPE fps{};
public:
XWindow(int width, int height);
// runs X11 event processing and some GL commands used for window drawing
void beginUpdate();
void endUpdate();
[[nodiscard]] inline bool shouldWindowClose() const { return isCloseRequested; }
/**
* @return time between frames in milliseconds
*/
[[nodiscard]] inline PRECISION_TYPE getFrameTimeMillis() const { return frameTimeMs; }
/**
* @return time between frames in seconds
*/
[[nodiscard]] inline PRECISION_TYPE getFrameTimeSeconds() const { return frameTimeS; }
/**
* @return the number of frames in the last second
*/
[[nodiscard]] inline PRECISION_TYPE getFPS() const { return fps; }
void setMouseGrabbed(bool grabbed);
bool isMouseGrabbed();
[[nodiscard]] inline int displayWidth() const { return m_displayWidth; }
[[nodiscard]] inline int displayHeight() const { return m_displayHeight; }
[[nodiscard]] inline GLFWwindow* getWindow() const { return window; }
void closeWindow();
~XWindow();
};
@ -142,18 +164,25 @@ namespace Raytracing {
Parser& m_parser;
Camera& m_camera;
public:
DisplayRenderer(XWindow& mWindow,
DisplayRenderer(
XWindow& mWindow,
Texture& mMainImage,
World& world,
Shader& mImageShader,
Shader& mWorldShader,
RayCaster& mRaycaster,
Parser& mParser,
Camera& mCamera)
Camera& mCamera
)
:
m_window(mWindow), m_mainImage(mMainImage), m_imageShader(mImageShader), m_worldShader(mWorldShader), m_raycaster(mRaycaster),
m_parser(mParser), m_camera(mCamera), m_world(world) {}
std::pair<Mat4x4, Mat4x4> getCameraMatrices();
/**
* Handles all the drawing nonsense, call from the main update loop once per frame.
*/
void draw();
};
}

View File

@ -8,6 +8,7 @@
#define XK_LATIN1
#define XK_MISCELLANY
#include <graphics/keys.h>
#include <engine/util/std.h>
@ -41,21 +42,38 @@ namespace Raytracing {
struct MouseMovementData {
double x, y;
MouseMovementData(double x, double y): x(x), y(y) {}
};
extern InputState* _inputState;
/**
* GLFW Keys / Mouse buttons are what are used.
*/
class Input {
public:
static inline void keyPressed(int key){_inputState->keysDown[key] = true; _inputState->state[key] = true;}
static inline void keyReleased(int key){_inputState->keysDown[key] = false;}
static inline void mousePressed(int button){_inputState->mouseDown[button] = true; *_inputState->mouseState=true;}
static inline void mouseReleased(int button){_inputState->mouseDown[button] = false;}
static inline void moveMove(double x, double y) {
_inputState->mousePos[0] = x; _inputState->mousePos[1] = y;
static inline void keyPressed(int key) {
_inputState->keysDown[key] = true;
_inputState->state[key] = true;
}
static inline void keyReleased(int key) { _inputState->keysDown[key] = false; }
static inline void mousePressed(int button) {
_inputState->mouseDown[button] = true;
*_inputState->mouseState = true;
}
static inline void mouseReleased(int button) { _inputState->mouseDown[button] = false; }
static inline void moveMove(double x, double y) {
_inputState->mousePos[0] = x;
_inputState->mousePos[1] = y;
}
static inline bool isKeyDown(int key) { return _inputState->keysDown[key]; }
static inline void state() {
// update the state used in single keypress events and the change in mouse position
for (int i = 0; i < 0xffff; i++)
@ -67,9 +85,13 @@ namespace Raytracing {
_inputState->mousePosLast[0] = _inputState->mousePos[0];
_inputState->mousePosLast[1] = _inputState->mousePos[1];
}
static inline bool isState(int key) { return _inputState->state[key]; }
static inline bool isMouseState() { return *_inputState->mouseState; }
static inline MouseMovementData getMousePosition() { return {_inputState->mousePos[0], _inputState->mousePos[1]}; }
static inline MouseMovementData getMouseDelta() { return {_inputState->mouseDelta[0], _inputState->mouseDelta[1]}; }
};

View File

@ -1,8 +1,3 @@
/*
* Created by Brett Terpstra 6920201 on 22/10/22.
* Copyright (c) 2022 Brett Terpstra. All Rights Reserved.
*/
#ifndef STEP_3_KEYS_H
#define STEP_3_KEYS_H

View File

@ -5,12 +5,18 @@
#include "engine/image/image.h"
#include <ios>
#include <fstream>
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "engine/image/stb_image_write.h"
#include "engine/image/stb/stb_image_write.h"
#define STB_IMAGE_IMPLEMENTATION
#include "engine/image/stb_image.h"
#include "engine/image/stb/stb_image.h"
#define STB_IMAGE_RESIZE_IMPLEMENTATION
#include "engine/image/stb_image_resize.h"
#include "engine/image/stb/stb_image_resize.h"
#include <config.h>
namespace Raytracing {
@ -106,10 +112,16 @@ namespace Raytracing {
delete[](data);
}
}
ImageInput::ImageInput(const std::string& image) {
data = stbi_load(image.c_str(), &width, &height, &channels, 4);
}
unsigned long* ImageInput::getImageAsIconBuffer() {
// I don't think this mess works
// and I could never figure out why it wasn't
// was meant for X11.
// which is part of why I switched to GLFW.
const int size = 32;
unsigned char newData[size * size * channels];
auto* returnData = new unsigned long[size * size + 2];
@ -125,6 +137,7 @@ namespace Raytracing {
}
return returnData;
}
ImageInput::~ImageInput() {
stbi_image_free(data);
}

View File

@ -62,6 +62,15 @@ int main(int argc, char** args) {
"\tSet the max threads the ray tracer will attempt to use.\n"
"\tDefaults to all cores of your cpu.\n", "0"
);
parser.addOption(
"--maxRayDepth", "Maximum depth a Ray can Traverse\n"
"\tSets the max depth a ray is allowed to bounce\n", "50"
);
parser.addOption(
"--raysPerPixel", "Number of Rays to Cast per Pixel\n"
"\tEvery pixel will generate this number of rays.\n"
"\tHigher number = clearer image, longer compute times.\n", "50"
);
// not implemented yet
parser.addOption(
{{"--gui"},
@ -298,7 +307,9 @@ int main(int argc, char** args) {
Raytracing::RayCaster rayCaster{camera, image, world, parser};
ilog << "Running RayCaster (NO_GUI)!\n";
// we don't actually have to check for --single since it's implied to be default true.
int threads = std::stoi(parser.getOptionValue("--threads"));
int threads = 1;
if (parser.hasOption("--multi"))
threads = std::stoi(parser.getOptionValue("--threads"));
if (parser.hasOption("--mpi")) {
// We need to make sure that if the user requests that MPI be run while not having MPI compiled, they get a helpful error warning.
#ifdef USE_MPI

View File

@ -17,8 +17,8 @@ namespace Raytracing {
dlog << "Number of processes: " << numberOfProcesses << "\n";
}
std::queue<RaycasterImageBounds> Raytracing::MPI::getCurrentImageRegionAssociation(RayCaster& raycaster) {
std::queue<RaycasterImageBounds> bounders{};
std::queue<RayCasterImageBounds> Raytracing::MPI::getCurrentImageRegionAssociation(RayCaster& raycaster) {
std::queue<RayCasterImageBounds> bounders{};
auto bounds = raycaster.partitionScreen(numberOfProcesses);
auto regionSize = bounds.size() / numberOfProcesses;

View File

@ -16,7 +16,9 @@
#else
#ifdef USE_OPENMP
#include <omp.h>
#endif
#endif
@ -96,17 +98,13 @@ namespace Raytracing {
Vec4 color;
};
Vec4 RayCaster::raycasti(const Ray& ray, int depth) {
return {};
}
Vec4 RayCaster::raycast(const Ray& ray) {
Ray localRay = ray;
Vec4 color{1.0, 1.0, 1.0};
for (int CURRENT_BOUNCE = 0; CURRENT_BOUNCE < maxBounceDepth; CURRENT_BOUNCE++) {
if (RTSignal->haltExecution || RTSignal->haltRaytracing)
return color;
while (RTSignal->pauseRaytracing) // sleep for 1/60th of a second, or about 1 frame.
while (RTSignal->pauseRaytracing) // sleep for 1/60th of a second, or about 1 frame. Helps prevent busy waiting and using all system resources.
std::this_thread::sleep_for(std::chrono::milliseconds(16));
auto hit = world.checkIfHit(localRay, 0.001, infinity);
@ -138,7 +136,7 @@ namespace Raytracing {
return color;
}
void RayCaster::runRaycastingAlgorithm(RaycasterImageBounds imageBounds, int loopX, int loopY) {
void RayCaster::runRaycastingAlgorithm(RayCasterImageBounds imageBounds, int loopX, int loopY) {
try {
int x = imageBounds.x + loopX;
int y = imageBounds.y + loopY;
@ -175,7 +173,7 @@ namespace Raytracing {
str << (i + 1);
profiler::start("Raytracer Results", str.str());
while (unprocessedQuads != nullptr) {
RaycasterImageBounds imageBoundingData{};
RayCasterImageBounds imageBoundingData{};
// get the function for the quadrant
queueSync.lock();
if (unprocessedQuads->empty()) {
@ -217,7 +215,7 @@ namespace Raytracing {
// run through all the quadrants
bool running = true;
while (running) {
RaycasterImageBounds imageBoundingData{};
RayCasterImageBounds imageBoundingData{};
#pragma omp critical
{
if (unprocessedQuads->empty())
@ -228,6 +226,8 @@ namespace Raytracing {
}
}
if (running) {
// the loops here could be made parallel however it is much slower than the current way
// unless you have 1440*720=1,036,800 cores.
for (int kx = 0; kx <= imageBoundingData.width; kx++) {
for (int ky = 0; ky < imageBoundingData.height; ky++) {
runRaycastingAlgorithm(imageBoundingData, kx, ky);
@ -247,10 +247,11 @@ namespace Raytracing {
#endif
}
void RayCaster::runMPI(std::queue<RaycasterImageBounds> bounds) {
void RayCaster::runMPI(std::queue<RayCasterImageBounds> bounds) {
#ifdef USE_MPI
ilog << "Running MPI\n";
dlog << "We have " << bounds.size() << " bounds currently pending!\n";
profiler::start("Raytracer Results", ("Process Rank: " + std::to_string(currentProcessID)));
while (!bounds.empty()) {
auto region = bounds.front();
for (int kx = 0; kx <= region.width; kx++) {
@ -260,13 +261,14 @@ namespace Raytracing {
}
bounds.pop();
}
profiler::end("Raytracer Results", ("Process Rank: " + std::to_string(currentProcessID)));
dlog << "Finished running MPI on " << currentProcessID << "\n";
#else
flog << "Not compiled with MPI!\n";
#endif
}
std::vector<RaycasterImageBounds> RayCaster::partitionScreen(int threads) {
std::vector<RayCasterImageBounds> RayCaster::partitionScreen(int threads) {
// if we are running single threaded, disable everything special
// the reason we run single threaded in a seperate thread is because the GUI requires its own set of updating commands
// which cannot be blocked by the raytracer, otherwise it would become unresponsive.
@ -287,9 +289,9 @@ namespace Raytracing {
ilog << "Generating multithreaded raytracer with " << threads << " threads and " << divs << " divisions! \n";
std::vector<RaycasterImageBounds> bounds;
std::vector<RayCasterImageBounds> bounds;
// we need to subdivide the image for the threads, since this is really quick it's fine to due sequentially
// we need to subdivide the image for the threads, since this is really quick it's fine to do sequentially
for (int dx = 0; dx < divs; dx++) {
for (int dy = 0; dy < divs; dy++) {
bounds.push_back(
@ -305,9 +307,9 @@ namespace Raytracing {
return bounds;
}
void RayCaster::setupQueue(const std::vector<RaycasterImageBounds>& bounds) {
void RayCaster::setupQueue(const std::vector<RayCasterImageBounds>& bounds) {
delete (unprocessedQuads);
unprocessedQuads = new std::queue<RaycasterImageBounds>();
unprocessedQuads = new std::queue<RayCasterImageBounds>();
for (auto& b : bounds)
unprocessedQuads->push(b);
}

View File

@ -73,7 +73,7 @@ namespace Raytracing {
std::vector<std::string> returnLines;
// now combine all the loaded files while respecing the include's position in the file.
// now combine all the loaded files while respecting the include's position in the file.
for (int i = 0; i < mainLines.size(); i++) {
if (includes.contains(i)) {
auto includedFileLines = includes[i];

View File

@ -63,6 +63,7 @@ Raytracing::ModelData Raytracing::OBJLoader::loadModel(const std::string& file)
ilog << "Completed extracting vertex data from model file " << file << "!\n";
return data;
}
Raytracing::TriangulatedModel::TriangulatedModel(const Raytracing::ModelData& data) {
auto faces = data.faces;
auto vertices = data.vertices;
@ -71,11 +72,13 @@ Raytracing::TriangulatedModel::TriangulatedModel(const Raytracing::ModelData& da
PRECISION_TYPE minX = infinity, minY = infinity, minZ = infinity, maxX = ninfinity, maxY = ninfinity, maxZ = ninfinity;
// create triangles from the faces
for (face f : faces) {
auto t = std::make_shared<Triangle>(
vertices[f.v1], vertices[f.v2], vertices[f.v3],
uvs[f.uv1], uvs[f.uv2], uvs[f.uv3],
normals[f.n1], normals[f.n2], normals[f.n3]);
normals[f.n1], normals[f.n2], normals[f.n3]
);
PRECISION_TYPE tMinX = infinity, tMinY = infinity, tMinZ = infinity, tMaxX = ninfinity, tMaxY = ninfinity, tMaxZ = ninfinity;
// find the min and max of all the triangles

View File

@ -4,7 +4,7 @@
*/
#include "engine/world.h"
#include "engine/raytracing.h"
#include "engine/image/stb_image.h"
#include "engine/image/stb/stb_image.h"
namespace Raytracing {
@ -109,6 +109,9 @@ namespace Raytracing {
void World::generateBVH() {
bvhObjects = std::make_unique<BVHTree>(objects);
#ifdef COMPILE_GUI
new DebugBVH(bvhObjects.get(), m_config.worldShader);
#endif
}
ScatterResults DiffuseMaterial::scatter(const Ray& ray, const HitData& hitData) const {

View File

@ -9,6 +9,7 @@
#include <utility>
// this file is only included if the compile gui setting is enabled in CMake
// Feel free to ignore this file, I'm not going to explain it. Purely for debugging the BVH
namespace Raytracing {
std::vector<std::pair<std::string, std::function<void()>>> tabs;
@ -257,8 +258,8 @@ namespace Raytracing {
m_shader.setInt("useWhite", 1);
m_shader.setVec3("color", {1.0, 1.0, 1.0});
{
ImGui::BeginChild("left pane", ImVec2(180, 0), true);
//guiNodesRecur(m_bvhTree->getRoot());
ImGui::BeginChild("left pane", ImVec2(250, 0), true);
guiNodesRecur(m_bvhTree->getRoot());
ImGui::EndChild();
}
ImGui::SameLine();
@ -270,8 +271,7 @@ namespace Raytracing {
true,
ImGuiWindowFlags_AlwaysAutoResize
); // Leave room for 1 line below us
tlog << m_bvhTree << "\n";
//drawNodesRecur(m_shader, m_bvhTree->getRoot());
drawNodesRecur(m_shader, m_bvhTree->getRoot());
ImGui::EndChild();
ImGui::EndGroup();
}

View File

@ -5,7 +5,7 @@
#include <graphics/gl/gl.h>
#include <GL/glx.h>
#include "engine/image/stb_image.h"
#include "engine/image/stb/stb_image.h"
#ifndef USE_GLFW
PFNGLCREATEVERTEXARRAYSPROC glCreateVertexArrays;
@ -52,6 +52,7 @@ unsigned int VAO::storeData(int attrNumber, int coordSize, int stride, long offs
return vboID;
}
unsigned int VAO::storeData(int length, const unsigned int* data) {
unsigned int eboID;
glGenBuffers(1, &eboID);
@ -64,6 +65,7 @@ unsigned int VAO::storeData(int length, const unsigned int *data) {
return eboID;
}
unsigned int VAO::createInstanceVBO(int count, int bytePerInstance) {
if (currentTransforms < 0) {
unsigned int vboID;
@ -90,6 +92,7 @@ unsigned int VAO::createInstanceVBO(int count, int bytePerInstance) {
// otherwise do nothing.
return instanceVBO;
}
void VAO::addInstancedAttribute(int attribute, int dataSize, int dataLengthBytes, int offset) const {
// bind buffer like normal
glBindBuffer(GL_ARRAY_BUFFER, instanceVBO);
@ -102,6 +105,7 @@ void VAO::addInstancedAttribute(int attribute, int dataSize, int dataLengthBytes
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
}
VAO::VAO(const std::vector<float>& verts, const std::vector<float>& uvs, const std::vector<unsigned int>& indices): VaoID(createVAO()) {
this->drawCount = (int) indices.size();
glBindVertexArray(VaoID);
@ -116,6 +120,7 @@ VAO::VAO(const std::vector<float>& verts, const std::vector<float>& uvs, const s
storeData(1, 2, 2 * sizeof(float), 0, (int) uvs.size(), uvs.data());
unbind();
}
VAO::VAO(const std::vector<Raytracing::Triangle>& triangles): VaoID(createVAO()) {
this->drawCount = (int) triangles.size() * 3;
glBindVertexArray(VaoID);
@ -127,6 +132,7 @@ VAO::VAO(const std::vector<Raytracing::Triangle>& triangles): VaoID(createVAO())
std::vector<float> verts;
std::vector<float> uvs;
std::vector<float> normals;
// convert our triangles into GPU triangles.
for (const Raytracing::Triangle& t : triangles) {
verts.push_back(float(t.vertex1.x()));
verts.push_back(float(t.vertex1.y()));
@ -177,6 +183,7 @@ VAO::VAO(const std::vector<Raytracing::Triangle>& triangles): VaoID(createVAO())
// addInstancedAttribute(6, 4, sizeof(Raytracing::Mat4x4), 48);
unbind();
}
VAO::VAO(const std::vector<std::shared_ptr<Raytracing::Triangle>>& triangles): VaoID(createVAO()) {
this->drawCount = (int) triangles.size() * 3;
glBindVertexArray(VaoID);
@ -188,6 +195,7 @@ VAO::VAO(const std::vector<std::shared_ptr<Raytracing::Triangle>>& triangles): V
std::vector<float> verts;
std::vector<float> uvs;
std::vector<float> normals;
// convert our triangles into GPU triangles.
for (const auto& t : triangles) {
verts.push_back(float(t->vertex1.x()));
verts.push_back(float(t->vertex1.y()));
@ -230,13 +238,16 @@ VAO::VAO(const std::vector<std::shared_ptr<Raytracing::Triangle>>& triangles): V
storeData(2, 3, 3 * sizeof(float), 0, (int) normals.size(), normals.data());
unbind();
}
void VAO::bind() const {
glBindVertexArray(VaoID);
}
void VAO::unbind() {
glBindVertexArray(0);
VaoID;
}
void VAO::draw(Raytracing::Shader& shader, const std::vector<Raytracing::Vec4>& positions) const {
// this should only update if we are drawing with more positions than we already have allocated.
// createInstanceVBO((int)positions.size(), sizeof(Raytracing::Mat4x4));
@ -262,15 +273,18 @@ void VAO::draw(Raytracing::Shader& shader, const std::vector<Raytracing::Vec4>&
glDrawArrays(GL_TRIANGLES, 0, drawCount);
}
}
void VAO::draw(Raytracing::Shader& shader) {
glDrawArrays(GL_TRIANGLES, 0, drawCount);
}
void VAO::draw() const {
if (drawCount < 0)
return;
else
glDrawElements(GL_TRIANGLES, drawCount, GL_UNSIGNED_INT, 0);
}
VAO::~VAO() {
const unsigned int vao = VaoID;
glDeleteVertexArrays(1, &vao);
@ -279,6 +293,7 @@ VAO::~VAO() {
}
glDeleteBuffers(1, &instanceVBO);
}
VAO::VAO(const std::vector<float>& verts, const std::vector<float>& uvs): VaoID(createVAO()) {
this->drawCount = (int) verts.size();
glBindVertexArray(VaoID);
@ -308,11 +323,13 @@ Texture::Texture(const std::string& path) {
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
// setup gl texture info
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// dynamically change storage settings based on channels in the file
int GL_RGB_SETTING = channels == 3 ? GL_RGB : GL_RGBA;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB_SETTING, width, height, 0, GL_RGB_SETTING, GL_UNSIGNED_BYTE, data);
glGenerateMipmap(GL_TEXTURE_2D);
@ -325,6 +342,7 @@ Texture::Texture(Raytracing::Image* image): _image(image), width(image->getWidth
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
// setup gl texture info
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
@ -346,6 +364,7 @@ unsigned char *Texture::loadTexture(const std::string& path) {
//}
return dta;
}
Texture::~Texture() {
tlog << "Deleting Texture {" << textureID << "}\n";
glDeleteTextures(1, &textureID);
@ -366,9 +385,12 @@ void Texture::enableGlTextures(int textureCount) {
glActiveTexture(GL_TEXTURE0 + i);
textureID;
}
void Texture::updateImage() {
if (_image == nullptr)
return;
glBindTexture(GL_TEXTURE_2D, textureID);
// unfortunately we do have to put the data into a format that OpenGL can read. This is a TODO:?
// unfortunately we have to put the data into a format that OpenGL can read. This is a TODO:?
data = new unsigned char[(unsigned long) (width) * (unsigned long) height * 3];
int pixelIndex = 0;
// slightly different order from STBi

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@ -5,7 +5,7 @@
#include <graphics/graphics.h>
#include <chrono>
#include <graphics/gl/gl.h>
#include "engine/image/stb_image.h"
#include "engine/image/stb/stb_image.h"
#include "graphics/debug_gui.h"
#include <engine/util/std.h>
@ -62,6 +62,7 @@ namespace Raytracing {
}
#ifdef USE_GLFW
XWindow::XWindow(int width, int height):
m_displayWidth(width), m_displayHeight(height) {
// OpenGL 4.6 is like 5 years old at this point and most systems support it
@ -75,9 +76,11 @@ namespace Raytracing {
glfwWindowHint(GLFW_DECORATED, GL_TRUE);
glfwWindowHint(GLFW_FOCUSED, GL_TRUE);
glfwSetErrorCallback([](int error_code, const char* description) -> void {
glfwSetErrorCallback(
[](int error_code, const char* description) -> void {
elog << "GLFW Error: " << error_code << "\n\t" << description << "\n";
});
}
);
if (!glfwInit())
throw std::runtime_error("Unable to init GLFW!\n");
@ -102,23 +105,29 @@ namespace Raytracing {
stbi_image_free(imageData32.pixels);
glfwSetKeyCallback(window, [](GLFWwindow* _window, int key, int scancode, int action, int mods) -> void {
glfwSetKeyCallback(
window, [](GLFWwindow* _window, int key, int scancode, int action, int mods) -> void {
if (action == GLFW_PRESS)
Input::keyPressed(key);
else if (action == GLFW_RELEASE)
Input::keyReleased(key);
});
}
);
glfwSetMouseButtonCallback(window, [](GLFWwindow* _window, int button, int action, int mods) -> void {
glfwSetMouseButtonCallback(
window, [](GLFWwindow* _window, int button, int action, int mods) -> void {
if (action == GLFW_PRESS)
Input::mousePressed(button);
else if (action == GLFW_RELEASE)
Input::mouseReleased(button);
});
}
);
glfwSetCursorPosCallback(window, [](GLFWwindow* _window, double x, double y) -> void {
glfwSetCursorPosCallback(
window, [](GLFWwindow* _window, double x, double y) -> void {
Input::moveMove(x, y);
});
}
);
IMGUI_CHECKVERSION();
ImGui::CreateContext();
@ -137,6 +146,7 @@ namespace Raytracing {
glfwShowWindow(window);
ilog << "Loaded GL" << GLAD_VERSION_MAJOR(version) << "." << GLAD_VERSION_MINOR(version) << "!\n";
}
void XWindow::closeWindow() {
if (isCloseRequested)
return;
@ -149,6 +159,7 @@ namespace Raytracing {
glfwDestroyWindow(window);
glfwTerminate();
}
void XWindow::beginUpdate() {
// check for window events
isCloseRequested = glfwWindowShouldClose(window);
@ -168,6 +179,7 @@ namespace Raytracing {
ImGui::ShowDemoWindow(nullptr);
}
void XWindow::endUpdate() {
// Render ImGUI
ImGui::Render();
@ -183,6 +195,7 @@ namespace Raytracing {
frameTimeS = delta / 1000000000.0;
fps = 1000 / frameTimeMs;
}
#else
XWindow::XWindow(int width, int height): m_width(width), m_height(height) {
// open the DEFAULT display. We don't want to open a specific screen as that is annoying.
@ -466,13 +479,16 @@ namespace Raytracing {
XCloseDisplay(display);
}
#endif
XWindow::~XWindow() {
closeWindow();
deleteKeys();
}
void XWindow::setMouseGrabbed(bool grabbed) {
glfwSetInputMode(window, GLFW_CURSOR, grabbed ? GLFW_CURSOR_DISABLED : GLFW_CURSOR_NORMAL);
}
bool XWindow::isMouseGrabbed() {
return glfwGetInputMode(window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED;
}
@ -539,13 +555,16 @@ namespace Raytracing {
if (Input::isKeyDown(GLFW_KEY_ESCAPE) && Input::isState(GLFW_KEY_ESCAPE))
m_window.setMouseGrabbed(!m_window.isMouseGrabbed());
DebugUI::render([this]() -> void {
DebugUI::render(
[this]() -> void {
if (ImGui::Button("Start") && !started) {
started = true;
RTSignal->haltRaytracing = false;
ilog << "Running raycaster!\n";
// we don't actually have to check for --single since it's implied to be default true.
int threads = std::stoi(m_parser.getOptionValue("--threads"));
int threads = 1;
if (m_parser.hasOption("--multi"))
threads = std::stoi(m_parser.getOptionValue("--threads"));
if (m_parser.hasOption("--mpi")) {
//m_raycaster.runMPI(raycaster.partitionScreen());
} else if (m_parser.hasOption("--openmp")) {
@ -565,7 +584,8 @@ namespace Raytracing {
ImGui::InputInt("Rays Per Pixel", &raysPerPixel);
m_raycaster.updateRayInfo(maxRayBounce, raysPerPixel);
ImGui::Checkbox("Debug", &debug);
});
}
);
// we want to be able to move around, and the camera matrix functions automatically recalculate image region & projection data.
if (m_parser.hasOption("--gpu")) {

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44
test.txt Normal file
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@ -0,0 +1,44 @@
Step 3/include/engine/config.h.in
Step 3/include/engine/image/image.h
Step 3/include/engine/math/bvh.h
Step 3/include/engine/math/colliders.h
Step 3/include/engine/math/vectors.h
Step 3/include/engine/mpi.h
Step 3/include/engine/raytracing.h
Step 3/include/engine/types.h
Step 3/include/engine/util/debug.h
Step 3/include/engine/util/loaders.h
Step 3/include/engine/util/logging.h
Step 3/include/engine/util/memory_util.h
Step 3/include/engine/util/models.h
Step 3/include/engine/util/parser.h
Step 3/include/engine/util/std.h
Step 3/include/engine/world.h
Step 3/include/graphics/debug_gui.h
Step 3/include/graphics/gl/gl.h
Step 3/include/graphics/gl/shader.h
Step 3/include/graphics/graphics.h
Step 3/include/graphics/input.h
Step 3/include/graphics/keys.h
Step 3/include/opencl/cl.h
Step 3/include/opencl/open_ray_tracing.h
Step 3/src/engine/globals.cpp
Step 3/src/engine/image/image.cpp
Step 3/src/engine/main.cpp
Step 3/src/engine/math/bvh.cpp
Step 3/src/engine/math/colliders.cpp
Step 3/src/engine/mpi.cpp
Step 3/src/engine/raytracing.cpp
Step 3/src/engine/util/debug.cpp
Step 3/src/engine/util/loaders.cpp
Step 3/src/engine/util/models.cpp
Step 3/src/engine/util/parser.cpp
Step 3/src/engine/world.cpp
Step 3/src/graphics/debug_gui.cpp
Step 3/src/graphics/gl/gl.c
Step 3/src/graphics/gl/gl.cpp
Step 3/src/graphics/gl/shader.cpp
Step 3/src/graphics/graphics.cpp
Step 3/src/graphics/input.cpp
Step 3/src/opencl/cl.cpp
Step 3/src/opencl/open_ray_tracing.cpp

42
test2.txt Normal file
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@ -0,0 +1,42 @@
Step 3/include/engine/image/image.h
Step 3/include/engine/math/bvh.h
Step 3/include/engine/math/colliders.h
Step 3/include/engine/math/vectors.h
Step 3/include/engine/mpi.h
Step 3/include/engine/raytracing.h
Step 3/include/engine/types.h
Step 3/include/engine/util/debug.h
Step 3/include/engine/util/loaders.h
Step 3/include/engine/util/logging.h
Step 3/include/engine/util/memory_util.h
Step 3/include/engine/util/models.h
Step 3/include/engine/util/parser.h
Step 3/include/engine/util/std.h
Step 3/include/engine/world.h
Step 3/include/graphics/debug_gui.h
Step 3/include/graphics/gl/gl.h
Step 3/include/graphics/gl/shader.h
Step 3/include/graphics/graphics.h
Step 3/include/graphics/input.h
Step 3/include/graphics/keys.h
Step 3/include/opencl/cl.h
Step 3/include/opencl/open_ray_tracing.h
Step 3/src/engine/globals.cpp
Step 3/src/engine/image/image.cpp
Step 3/src/engine/main.cpp
Step 3/src/engine/math/bvh.cpp
Step 3/src/engine/math/colliders.cpp
Step 3/src/engine/mpi.cpp
Step 3/src/engine/raytracing.cpp
Step 3/src/engine/util/debug.cpp
Step 3/src/engine/util/loaders.cpp
Step 3/src/engine/util/models.cpp
Step 3/src/engine/util/parser.cpp
Step 3/src/engine/world.cpp
Step 3/src/graphics/debug_gui.cpp
Step 3/src/graphics/gl/gl.cpp
Step 3/src/graphics/gl/shader.cpp
Step 3/src/graphics/graphics.cpp
Step 3/src/graphics/input.cpp
Step 3/src/opencl/cl.cpp
Step 3/src/opencl/open_ray_tracing.cpp