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Raytracing camera now losely follows the debug camera 

Differences in Viewport size change how the scene is rendered but the position and rotation of the camera is close enough.
main
Brett 2022-11-14 20:44:49 -05:00
parent bd34d6e6e7
commit a28d49b132
24 changed files with 308 additions and 189 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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@ -1,3 +1,3 @@
Start testing: Nov 13 14:12 EST Start testing: Nov 14 20:44 EST
---------------------------------------------------------- ----------------------------------------------------------
End testing: Nov 13 14:12 EST End testing: Nov 14 20:44 EST

78
Step 3/cmake-build-release/imgui.ini
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@ -4,12 +4,86 @@ Size=400,400
Collapsed=0 Collapsed=0
[Window][Dear ImGui Demo] [Window][Dear ImGui Demo]
Pos=650,20 Pos=649,26
Size=550,680 Size=550,680
Collapsed=1 Collapsed=1
[Window][Debug Menu] [Window][Debug Menu]
Pos=26,34 Pos=13,12
Size=339,226 Size=339,226
Collapsed=0 Collapsed=0
[Window][BVH Data]
Pos=953,64
Size=775,355
Collapsed=0
[Window][Example: Property editor]
Pos=60,60
Size=430,450
Collapsed=0
[Window][Example: Simple layout]
Pos=76,222
Size=500,440
Collapsed=0
[Window][BVH Data 0]
Pos=780,106
Size=556,373
Collapsed=0
[Window][BVH Data 10]
Pos=1079,43
Size=491,217
Collapsed=0
[Window][BVH Data 1]
Pos=60,60
Size=1127,267
Collapsed=0
[Window][BVH Data 4]
Pos=1111,78
Size=498,168
Collapsed=0
[Window][BVH Data 3]
Pos=60,60
Size=358,266
Collapsed=0
[Window][BVH Data 9]
Pos=60,60
Size=293,240
Collapsed=0
[Window][BVH Data 6]
Pos=60,60
Size=372,270
Collapsed=0
[Window][BVH Data 8]
Pos=60,60
Size=327,303
Collapsed=0
[Window][BVH Data 2]
Pos=60,60
Size=324,211
Collapsed=0
[Window][BVH Data ]
Pos=930,180
Size=397,473
Collapsed=0
[Window][Example: Long text display]
Pos=60,60
Size=520,600
Collapsed=0
[Table][0xD0F0C6E3,2]
Column 0 Weight=1.0000
Column 1 Weight=1.0000

142
Step 3/include/engine/math/bvh.h
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@ -11,6 +11,7 @@
#include <config.h> #include <config.h>
#ifdef COMPILE_GUI #ifdef COMPILE_GUI
#include <graphics/gl/gl.h> #include <graphics/gl/gl.h>
#include <graphics/imgui/imgui.h>
#endif #endif
#include <utility> #include <utility>
@ -21,10 +22,9 @@
namespace Raytracing { namespace Raytracing {
#ifdef COMPILE_GUI #ifdef COMPILE_GUI
struct BVHDebugVAO { extern std::shared_ptr<VAO> aabbVAO;
VAO* vaoPtr; extern int count;
Vec4 position; extern int selected;
};
#endif #endif
struct BVHObject { struct BVHObject {
@ -38,13 +38,64 @@ namespace Raytracing {
}; };
struct BVHNode { struct BVHNode {
private:
static Raytracing::Mat4x4 getTransform(const AABB& _aabb){
Raytracing::Mat4x4 transform {};
auto center = _aabb.getCenter();
transform.translate(center);
auto xRadius = _aabb.getXRadius(center) * 2;
auto yRadius = _aabb.getYRadius(center) * 2;
auto zRadius = _aabb.getZRadius(center) * 2;
transform.scale(float(xRadius), float(yRadius), float(zRadius));
return transform;
}
public: public:
std::vector<BVHObject> objs; std::vector<BVHObject> objs;
AABB aabb; AABB aabb;
BVHNode* left; BVHNode* left;
BVHNode* right; BVHNode* right;
int index;
BVHNode(std::vector<BVHObject> objs, AABB aabb, BVHNode* left, BVHNode* right): objs(std::move(objs)), aabb(std::move(aabb)), BVHNode(std::vector<BVHObject> objs, AABB aabb, BVHNode* left, BVHNode* right): objs(std::move(objs)), aabb(std::move(aabb)),
left(left), right(right) {} left(left), right(right) {
index = count++;
}
#ifdef COMPILE_GUI
void draw(Shader& worldShader){
worldShader.setVec3("color", {1.0, 1.0, 1.0});
if (selected == index){
worldShader.setVec3("color", {0.0, 0.0, 1.0});
if (ImGui::BeginListBox("")){
for (const auto& item : objs){
auto pos = item.ptr->getPosition();
ImGui::Text("%s", (std::to_string(pos.x()) + " " + std::to_string(pos.y()) + " " + std::to_string(pos.z())).c_str());
}
ImGui::EndListBox();
}
aabbVAO->bind();
for (const auto& obj : objs) {
auto transform = getTransform(obj.aabb);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);
}
auto transform = getTransform(aabb);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);
auto splitAABBs = aabb.splitByLongestAxis();
transform = getTransform(splitAABBs.second);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);
transform = getTransform(splitAABBs.first);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);
}
}
void gui() const {
if (ImGui::Selectable(("S: " + std::to_string(objs.size()) + " I: " + std::to_string(index)).c_str(), selected == index))
selected = index;
}
#endif
~BVHNode() { ~BVHNode() {
delete (left); delete (left);
delete (right); delete (right);
@ -53,9 +104,6 @@ namespace Raytracing {
class BVHTree { class BVHTree {
private: private:
#ifdef COMPILE_GUI
std::vector<BVHDebugVAO> aabbVAOs;
#endif
const int MAX_TREE_DEPTH = 50; const int MAX_TREE_DEPTH = 50;
BVHNode* root = nullptr; BVHNode* root = nullptr;
@ -66,21 +114,23 @@ namespace Raytracing {
// if this object doesn't have an AABB, we cannot use a BVH on it // if this object doesn't have an AABB, we cannot use a BVH on it
// If this ever fails we have a problem with the implementation. // If this ever fails we have a problem with the implementation.
RTAssert(!obj.aabb.isEmpty()); RTAssert(!obj.aabb.isEmpty());
if (obj.aabb.intersects(aabbs.first)) { if (aabbs.first.intersects(obj.aabb)) {
space.left.push_back(obj); space.left.push_back(obj);
tlog << "left\n";
} }
if (obj.aabb.intersects(aabbs.second)) { if (aabbs.second.intersects(obj.aabb)) {
space.right.push_back(obj); space.right.push_back(obj);
tlog << "right\n";
} }
} }
return space; return space;
} }
BVHNode* addObjectsRecur(const std::vector<BVHObject>& objects, unsigned long prevSize) { BVHNode* addObjectsRecur(const std::vector<BVHObject>& objects, long prevSize) {
//ilog << "size: " << objects.size() << "\n"; ilog << "size: " << objects.size() << " " << prevSize << "\n";
// prevSize was required to solve some really weird bugs // prevSize was required to solve some really weird bugs
// which are a TODO: // which are a TODO:
if ((objects.size() <= 2 && !objects.empty()) || prevSize == objects.size()) { if ((objects.size() <= 1 && !objects.empty()) || prevSize == objects.size()) {
AABB local; AABB local;
for (const auto& obj: objects) for (const auto& obj: objects)
local = local.expand(obj.aabb); local = local.expand(obj.aabb);
@ -93,21 +143,21 @@ namespace Raytracing {
// this ensures that we have a minimum AABB. // this ensures that we have a minimum AABB.
AABB world; AABB world;
for (const auto& obj: objects) { for (const auto& obj: objects) {
//tlog << obj->getAABB();
world = world.expand(obj.aabb); world = world.expand(obj.aabb);
} }
//tlog << "\n";
// then split and partition the world // then split and partition the world
auto splitAABBs = world.splitByLongestAxis(); auto splitAABBs = world.splitByLongestAxis();
auto partitionedObjs = partition(splitAABBs, objects); auto partitionedObjs = partition(splitAABBs, objects);
elog << partitionedObjs.left.size() << " :: " << partitionedObjs.right.size() << "\n";
BVHNode* left = nullptr; BVHNode* left = nullptr;
BVHNode* right = nullptr; BVHNode* right = nullptr;
// don't try to explore nodes which don't have anything in them. // don't try to explore nodes which don't have anything in them.
if (!partitionedObjs.left.empty()) if (!partitionedObjs.left.empty())
left = addObjectsRecur(partitionedObjs.left, objects.size()); left = addObjectsRecur(partitionedObjs.left, (long) objects.size());
if (!partitionedObjs.right.empty()) if (!partitionedObjs.right.empty())
right = addObjectsRecur(partitionedObjs.right, objects.size()); right = addObjectsRecur(partitionedObjs.right, (long) objects.size());
return new BVHNode(objects, world, left, right); return new BVHNode(objects, world, left, right);
} }
@ -128,10 +178,31 @@ namespace Raytracing {
// which is much faster! (especially when dealing with triangles) // which is much faster! (especially when dealing with triangles)
return node->objs; return node->objs;
} }
#ifdef COMPILE_GUI
void drawNodesRecur(Shader& worldShader, BVHNode* node){
node->draw(worldShader);
if (node->left != nullptr)
drawNodesRecur(worldShader, node->left);
if (node->right != nullptr)
drawNodesRecur(worldShader, node->right);
}
void guiNodesRecur(BVHNode* node){
node->gui();
if (node->left != nullptr)
guiNodesRecur(node->left);
if (node->right != nullptr)
guiNodesRecur(node->right);
}
#endif
public: public:
std::vector<Object*> noAABBObjects; std::vector<Object*> noAABBObjects;
explicit BVHTree(const std::vector<Object*>& objectsInWorld) { explicit BVHTree(const std::vector<Object*>& objectsInWorld) {
addObjects(objectsInWorld); addObjects(objectsInWorld);
#ifdef COMPILE_GUI
auto aabbVertexData = Shapes::cubeVertexBuilder{};
if (aabbVAO == nullptr)
aabbVAO = std::make_shared<VAO>(aabbVertexData.cubeVerticesRaw, aabbVertexData.cubeUVs);
#endif
} }
void addObjects(const std::vector<Object*>& objects) { void addObjects(const std::vector<Object*>& objects) {
@ -146,19 +217,6 @@ namespace Raytracing {
noAABBObjects.push_back(obj); noAABBObjects.push_back(obj);
continue; continue;
} }
#ifdef COMPILE_GUI
// create a VAO for debugging the AABB bounds.
BVHDebugVAO vaoStorage {};
auto aabbCenter = obj->getAABB().getCenter();
auto aabbXRadius = obj->getAABB().getXRadius(aabbCenter);
auto aabbYRadius = obj->getAABB().getYRadius(aabbCenter);
auto aabbZRadius = obj->getAABB().getZRadius(aabbCenter);
auto aabbVertexData = Shapes::cubeVertexBuilder::getCubeExtends(float(aabbXRadius), float(aabbYRadius), float(aabbZRadius));
vaoStorage.vaoPtr = new VAO(aabbVertexData.cubeVerticesRaw, aabbVertexData.cubeUVs);
vaoStorage.position = obj->getPosition();
aabbVAOs.push_back(vaoStorage);
#endif
BVHObject bvhObject; BVHObject bvhObject;
// returns a copy of the AABB object and assigns it in to the tree storage object // returns a copy of the AABB object and assigns it in to the tree storage object
@ -167,7 +225,7 @@ namespace Raytracing {
bvhObject.ptr = obj; bvhObject.ptr = obj;
objs.push_back(bvhObject); objs.push_back(bvhObject);
} }
root = addObjectsRecur(objs, -1); root = addObjectsRecur(objs, 1);
} }
std::vector<BVHObject> rayIntersect(const Ray& ray, PRECISION_TYPE min, PRECISION_TYPE max) { std::vector<BVHObject> rayIntersect(const Ray& ray, PRECISION_TYPE min, PRECISION_TYPE max) {
@ -177,22 +235,30 @@ namespace Raytracing {
#ifdef COMPILE_GUI #ifdef COMPILE_GUI
// renders all the debug VAOs on screen. // renders all the debug VAOs on screen.
void render (Shader& worldShader){ void render (Shader& worldShader){
ImGui::Begin(("BVH Data "), nullptr, ImGuiWindowFlags_NoCollapse);
worldShader.use(); worldShader.use();
worldShader.setInt("useWhite", 1); worldShader.setInt("useWhite", 1);
for (const auto& debugVAO : aabbVAOs){ worldShader.setVec3("color", {1.0, 1.0, 1.0});
debugVAO.vaoPtr->bind(); {
debugVAO.vaoPtr->draw(worldShader, {debugVAO.position}); ImGui::BeginChild("left pane", ImVec2(150, 0), true);
guiNodesRecur(root);
ImGui::EndChild();
}
ImGui::SameLine();
{
ImGui::BeginGroup();
ImGui::BeginChild("item view", ImVec2(0, -ImGui::GetFrameHeightWithSpacing()), true, ImGuiWindowFlags_AlwaysAutoResize); // Leave room for 1 line below us
drawNodesRecur(worldShader, root);
ImGui::EndChild();
ImGui::EndGroup();
} }
worldShader.setInt("useWhite", 0); worldShader.setInt("useWhite", 0);
ImGui::End();
} }
#endif #endif
~BVHTree() { ~BVHTree() {
delete (root); delete (root);
#ifdef COMPILE_GUI
for (const auto& debugVAORef : aabbVAOs)
delete(debugVAORef.vaoPtr);
#endif
} }
}; };

15
Step 3/include/engine/math/colliders.h
View File

@ -104,13 +104,13 @@ namespace Raytracing {
[[nodiscard]] Vec4 getMin() const { return min; } [[nodiscard]] Vec4 getMin() const { return min; }
[[nodiscard]] Vec4 getMax() const { return max; } [[nodiscard]] Vec4 getMax() const { return max; }
inline PRECISION_TYPE getXRadius(const Vec4& center){ [[nodiscard]] inline PRECISION_TYPE getXRadius(const Vec4& center) const {
return max.x() - center.x(); return max.x() - center.x();
} }
inline PRECISION_TYPE getYRadius(const Vec4& center){ [[nodiscard]] inline PRECISION_TYPE getYRadius(const Vec4& center) const {
return max.y() - center.y(); return max.y() - center.y();
} }
inline PRECISION_TYPE getZRadius(const Vec4& center){ [[nodiscard]] inline PRECISION_TYPE getZRadius(const Vec4& center) const {
return max.z() - center.z(); return max.z() - center.z();
} }
@ -118,8 +118,13 @@ namespace Raytracing {
}; };
inline std::ostream& operator<<(std::ostream& out, const AABB& v) { inline std::ostream& operator<<(std::ostream& out, const AABB& v) {
return out << "AABB{min{" << v.getMin().x() << ", " << v.getMin().y() << ", " << v.getMin().z() << "}, max{" << v.getMax().x() << ", " << v.getMax().y() auto max = v.getMax();
<< ", " << v.getMax().z() << "}} "; auto min = v.getMin();
auto center = v.getCenter();
return out << "AABB {\n\t min{" << min.x() << ", " << min.y() << ", " << min.z() << "},\n\t max{" << max.x() << ", " << max.y()
<< ", " << max.z() << "},\n\t diff{" << max.x() - min.x() << ", " << max.y() - min.y() << ", " << max.z() - min.z() << "},\n\t "
<< "center{" << center.x() << ", " << center.y() << ", " << center.z() << "},\n\t "
<< "radi{" << v.getXRadius(center) << ", " << v.getYRadius(center) << ", " << v.getZRadius(center) << "}\n};\n";
} }
} }

14
Step 3/include/engine/math/vectors.h
View File

@ -617,6 +617,20 @@ namespace Raytracing {
inline float m23(float d) { return data.dim[3][2] = d; } inline float m23(float d) { return data.dim[3][2] = d; }
inline float m33(float d) { return data.dim[3][3] = d; } inline float m33(float d) { return data.dim[3][3] = d; }
inline float m(int i, int j, float d) { return data.dim[i][j] = d; }; inline float m(int i, int j, float d) { return data.dim[i][j] = d; };
// inline float* operator [](int _i) {
// return data.dim[_i];
// }
[[nodiscard]] PRECISION_TYPE determinant() const {
return m00() * (m11() * m22() * m33() + m12() * m23() * m31() + m13() * m21() * m32()
- m31() * m22() * m13() - m32() * m23() * m11() - m33() * m21() * m12())
- m10() * (m01() * m22() * m33() + m02() * m23() * m31() + m03() * m21() * m32()
- m31() * m32() * m03() - m32() * m23() * m01() - m33() * m21() * m02())
+ m20() * (m01() * m12() * m33() + m02() * m13() * m31() + m03() * m11() * m32()
- m31() * m12() * m03() - m32() * m13() * m01() - m33() * m11() * m02())
- m30() * (m01() * m12() * m23() + m02() * m13() * m21() + m03() * m11() * m22()
- m21() * m12() * m03() - m22() * m13() * m01() - m23() * m11() * m02());
}
}; };
// adds the two Mat4x4 left and right // adds the two Mat4x4 left and right

44
Step 3/include/engine/raytracing.h
View File

@ -72,7 +72,7 @@ namespace Raytracing {
void setPosition(const Vec4& pos) { this->position = pos; } void setPosition(const Vec4& pos) { this->position = pos; }
void setRotation(PRECISION_TYPE yaw, PRECISION_TYPE pitch, PRECISION_TYPE roll); void setRotation(PRECISION_TYPE yaw, PRECISION_TYPE pitch);
// the follow utility functions are actually taking forever to get right // 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? // I can't tell if my projection calculation is off or the view calc?
@ -95,7 +95,7 @@ namespace Raytracing {
//glm::mat4 projectG = glm::perspective(glm::radians(90.0f), (float)aspectRatio, 0.1f, (float)1000); //glm::mat4 projectG = glm::perspective(glm::radians(90.0f), (float)aspectRatio, 0.1f, (float)1000);
//return Mat4x4{projectG}; //return Mat4x4{projectG};
} }
Mat4x4 view(const Vec4& lookAtPos){ [[nodiscard]] Mat4x4 view(const Vec4& lookAtPos) const {
Mat4x4 view; Mat4x4 view;
auto w = (position - lookAtPos).normalize(); // forward auto w = (position - lookAtPos).normalize(); // forward
@ -125,44 +125,8 @@ namespace Raytracing {
return view; return view;
} }
Mat4x4 view(PRECISION_TYPE yaw, PRECISION_TYPE pitch) { Mat4x4 view(PRECISION_TYPE yaw, PRECISION_TYPE pitch);
Mat4x4 view;
pitch = degreeeToRadian(pitch);
yaw = degreeeToRadian(yaw);
PRECISION_TYPE cosPitch = std::cos(pitch);
PRECISION_TYPE cosYaw = std::cos(yaw);
PRECISION_TYPE sinPitch = std::sin(pitch);
PRECISION_TYPE sinYaw = std::sin(yaw);
auto x = Vec4{cosYaw, 0, -sinYaw}; // forward
auto y = Vec4{sinYaw * sinPitch, cosPitch, cosYaw * sinPitch}; // right
auto z = Vec4{sinYaw * cosPitch, -sinPitch, cosPitch * cosYaw}; // up
view.m00(float(x.x()));
view.m01(float(x.y()));
view.m02(float(x.z()));
view.m03(float(x.w()));
view.m10(float(y.x()));
view.m11(float(y.y()));
view.m12(float(y.z()));
view.m13(float(y.w()));
view.m20(float(z.x()));
view.m21(float(z.y()));
view.m22(float(z.z()));
view.m23(float(z.w()));
// view matrix are inverted, dot product to simulate translate matrix multiplication
view.m03(-float(Vec4::dot(x, position)));
view.m13(-float(Vec4::dot(y, position)));
view.m23(-float(Vec4::dot(z, position)));
view.m33(1);
return view;
}
[[nodiscard]] inline Vec4 getPosition() const {return position;}; [[nodiscard]] inline Vec4 getPosition() const {return position;};
// the camera's position must be set with setPosition(Vec4); // the camera's position must be set with setPosition(Vec4);

1
Step 3/include/graphics/gl/gl.h
View File

@ -237,6 +237,7 @@ class VAO {
void draw() const; void draw() const;
// draw as if it's a box that we need to bulk draw. // draw as if it's a box that we need to bulk draw.
void draw(Raytracing::Shader& shader, const std::vector<Raytracing::Vec4>& positions); void draw(Raytracing::Shader& shader, const std::vector<Raytracing::Vec4>& positions);
void draw(Raytracing::Shader& shader);
~VAO(); ~VAO();
}; };

3
Step 3/resources/shaders/world.fs
View File

@ -6,6 +6,7 @@ in vec3 outNormal;
uniform sampler2D tex; uniform sampler2D tex;
uniform int useWhite; uniform int useWhite;
uniform vec3 color;
const vec3 lightDir = vec3(1.0, 1.0, 1.0); const vec3 lightDir = vec3(1.0, 1.0, 1.0);
@ -15,5 +16,5 @@ void main() {
if (useWhite == 0) if (useWhite == 0)
FragColor = vec4(vec3(1.0, 0.0f, 0.0f) * dot(lightDir, outNormal), 1.0f); FragColor = vec4(vec3(1.0, 0.0f, 0.0f) * dot(lightDir, outNormal), 1.0f);
else else
FragColor = vec4(1.0); FragColor = vec4(color, 1.0f);
} }

9
Step 3/src/engine/globals.cpp
View File

@ -4,6 +4,10 @@
*/ */
// Yes, globals are bad. // Yes, globals are bad.
#include "engine/util/debug.h" #include "engine/util/debug.h"
#include <config.h>
#ifdef COMPILE_GUI
#include <graphics/gl/gl.h>
#endif
bool* haltExecution; bool* haltExecution;
bool* pauseRaytracing; bool* pauseRaytracing;
@ -11,4 +15,9 @@ bool* haltRaytracing;
namespace Raytracing { namespace Raytracing {
std::unordered_map<std::string, std::shared_ptr<profiler>> profiles; std::unordered_map<std::string, std::shared_ptr<profiler>> profiles;
#ifdef COMPILE_GUI
std::shared_ptr<VAO> aabbVAO = nullptr;
int count = 0;
int selected = 0;
#endif
} }

10
Step 3/src/engine/main.cpp
View File

@ -126,11 +126,17 @@ int main(int argc, char** args) {
//world.add(new Raytracing::SphereObject({1,0,-1,0}, 0.5, world.getMaterial("redMetal"))); //world.add(new Raytracing::SphereObject({1,0,-1,0}, 0.5, world.getMaterial("redMetal")));
world.add(new Raytracing::SphereObject({0, -100.5, -1, 0}, 100, world.getMaterial("greenDiffuse"))); world.add(new Raytracing::SphereObject({0, -100.5, -1, 0}, 100, world.getMaterial("greenDiffuse")));
//world.add(new Raytracing::TriangleObject({0,0.1,-0.5f,0}, {{-0.5, -0.5, 0.0}, {0.5, -0.5, 0.0}, {0.0, 0.5, 0}}, world.getMaterial("greenDiffuse"))); //world.add(new Raytracing::TriangleObject({0,0.1,-0.5f,0}, {{-0.5, -0.5, 0.0}, {0.5, -0.5, 0.0}, {0.0, 0.5, 0}}, world.getMaterial("greenDiffuse")));
world.add(new Raytracing::ModelObject({0, 1, 0}, spider, world.getMaterial("redDiffuse"))); /*world.add(new Raytracing::ModelObject({0, 1, 0}, spider, world.getMaterial("redDiffuse")));
world.add(new Raytracing::ModelObject({-5, 0.5, 0}, plane, world.getMaterial("greenMetal"))); world.add(new Raytracing::ModelObject({-5, 0.5, 0}, plane, world.getMaterial("greenMetal")));
world.add(new Raytracing::ModelObject({5, 1, 0}, house, world.getMaterial("redDiffuse"))); world.add(new Raytracing::ModelObject({5, 1, 0}, house, world.getMaterial("redDiffuse")));
world.add(new Raytracing::ModelObject({0, 0, -5}, house, world.getMaterial("blueDiffuse"))); world.add(new Raytracing::ModelObject({0, 0, -5}, house, world.getMaterial("blueDiffuse")));
world.add(new Raytracing::ModelObject({0, 0, 5}, house, world.getMaterial("blueDiffuse"))); world.add(new Raytracing::ModelObject({0, 0, 5}, house, world.getMaterial("blueDiffuse")));*/
world.add(new Raytracing::ModelObject({0, 1, 0}, spider, world.getMaterial("redDiffuse")));
world.add(new Raytracing::ModelObject({-15, 0.5, 0}, plane, world.getMaterial("greenMetal")));
world.add(new Raytracing::ModelObject({15, 1, 0}, house, world.getMaterial("redDiffuse")));
world.add(new Raytracing::ModelObject({0, 0, -15}, house, world.getMaterial("blueDiffuse")));
world.add(new Raytracing::ModelObject({0, 0, 15}, house, world.getMaterial("blueDiffuse")));
if (parser.hasOption("--gui") || parser.hasOption("-g")) { if (parser.hasOption("--gui") || parser.hasOption("-g")) {
#ifdef COMPILE_GUI #ifdef COMPILE_GUI

46
Step 3/src/engine/raytracing.cpp
View File

@ -33,9 +33,53 @@ namespace Raytracing {
imageOrigin = position - horizontalAxis / 2 - verticalAxis / 2 - w; imageOrigin = position - horizontalAxis / 2 - verticalAxis / 2 - w;
} }
void Camera::setRotation(const PRECISION_TYPE yaw, const PRECISION_TYPE pitch, const PRECISION_TYPE roll) { void Camera::setRotation(const PRECISION_TYPE yaw, const PRECISION_TYPE pitch) {
// TODO: // TODO:
} }
Mat4x4 Camera::view(PRECISION_TYPE yaw, PRECISION_TYPE pitch) {
Mat4x4 view;
pitch = degreeeToRadian(pitch);
yaw = degreeeToRadian(yaw);
PRECISION_TYPE cosPitch = std::cos(pitch);
PRECISION_TYPE cosYaw = std::cos(yaw);
PRECISION_TYPE sinPitch = std::sin(pitch);
PRECISION_TYPE sinYaw = std::sin(yaw);
auto x = Vec4{cosYaw, 0, -sinYaw}; // forward
auto y = Vec4{sinYaw * sinPitch, cosPitch, cosYaw * sinPitch}; // right
auto z = Vec4{sinYaw * cosPitch, -sinPitch, cosPitch * cosYaw}; // up
viewportHeight = 1 * tanFovHalf;
viewportWidth = aspectRatio * viewportHeight;
horizontalAxis = viewportWidth * x;
verticalAxis = viewportHeight * y;
imageOrigin = position - horizontalAxis / 2 - verticalAxis / 2 - z;
view.m00(float(x.x()));
view.m01(float(x.y()));
view.m02(float(x.z()));
view.m03(float(x.w()));
view.m10(float(y.x()));
view.m11(float(y.y()));
view.m12(float(y.z()));
view.m13(float(y.w()));
view.m20(float(z.x()));
view.m21(float(z.y()));
view.m22(float(z.z()));
view.m23(float(z.w()));
// view matrix are inverted, dot product to simulate translate matrix multiplication
view.m03(-float(Vec4::dot(x, position)));
view.m13(-float(Vec4::dot(y, position)));
view.m23(-float(Vec4::dot(z, position)));
view.m33(1);
return view;
}
struct RayData { struct RayData {
Ray ray; Ray ray;

3
Step 3/src/graphics/gl/gl.cpp
View File

@ -209,6 +209,9 @@ void VAO::draw(Raytracing::Shader& shader, const std::vector<Raytracing::Vec4>&
glDrawArrays(GL_TRIANGLES, 0, drawCount); glDrawArrays(GL_TRIANGLES, 0, drawCount);
} }
} }
void VAO::draw(Raytracing::Shader& shader) {
glDrawArrays(GL_TRIANGLES, 0, drawCount);
}
void VAO::draw() const { void VAO::draw() const {
if (drawCount < 0) if (drawCount < 0)
return; return;

15
Step 3/src/graphics/graphics.cpp
View File

@ -516,6 +516,17 @@ namespace Raytracing {
yaw += (float) Input::getMouseDelta().x * (1000.0f / ImGui::GetIO().Framerate / 1000.0f) * 3; yaw += (float) Input::getMouseDelta().x * (1000.0f / ImGui::GetIO().Framerate / 1000.0f) * 3;
pitch += (float) Input::getMouseDelta().y * (1000.0f / ImGui::GetIO().Framerate / 1000.0f) * 1.5f; pitch += (float) Input::getMouseDelta().y * (1000.0f / ImGui::GetIO().Framerate / 1000.0f) * 1.5f;
const PRECISION_TYPE turnSpeed = 50;
if (Input::isKeyDown(GLFW_KEY_LEFT))
yaw += float(turnSpeed * m_window.getFrameTimeSeconds());
if (Input::isKeyDown(GLFW_KEY_RIGHT))
yaw -= float(turnSpeed * m_window.getFrameTimeSeconds());
if (Input::isKeyDown(GLFW_KEY_UP))
pitch += float(turnSpeed * m_window.getFrameTimeSeconds());
if (Input::isKeyDown(GLFW_KEY_DOWN))
pitch -= float(turnSpeed * m_window.getFrameTimeSeconds());
PRECISION_TYPE moveAtX = 0, moveAtY = 0, moveAtZ = 0; PRECISION_TYPE moveAtX = 0, moveAtY = 0, moveAtZ = 0;
PRECISION_TYPE speed = 40.0f; PRECISION_TYPE speed = 40.0f;
@ -554,9 +565,9 @@ namespace Raytracing {
m_spiderVAO->bind(); m_spiderVAO->bind();
m_spiderVAO->draw(m_worldShader, {{0, 1, 0}}); m_spiderVAO->draw(m_worldShader, {{0, 1, 0}});
m_houseVAO->bind(); m_houseVAO->bind();
m_houseVAO->draw(m_worldShader, {{5, 1, 0}, {0, 0, -5}, {0, 0, 5}}); m_houseVAO->draw(m_worldShader, {{15, 1, 0}, {0, 0, -15}, {0, 0, 15}});
m_planeVAO->bind(); m_planeVAO->bind();
m_planeVAO->draw(m_worldShader, {{-5, 0.5, 0}}); m_planeVAO->draw(m_worldShader, {{-15, 0.5, 0}});
} else { } else {
m_imageShader.use(); m_imageShader.use();
m_mainImage.updateImage(); m_mainImage.updateImage();