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TheRedShip
2025-01-18 16:00:24 +01:00
parent 5d3de6158b
commit 85bab977df
9 changed files with 3010 additions and 36 deletions
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2846
fps.txt Normal file
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File diff suppressed because it is too large Load Diff

10
imgui.ini
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@ -4,13 +4,17 @@ Size=400,400
[Window][Camera]
Pos=1652,11
Size=259,192
Size=259,200
[Window][Material]
Pos=1650,202
Pos=1650,214
Size=266,285
[Window][Fog settings]
Pos=1679,495
Pos=1654,501
Size=247,157
[Window][Debug]
Pos=1650,665
Size=260,294

13
includes/RT/Scene.hpp
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@ -64,6 +64,14 @@ struct GPUVolume
int enabled;
};
struct GPUDebug
{
int enabled;
int mode;
int triangle_treshold;
int box_treshold;
};
struct GPUBvh
{
alignas(16) glm::vec3 min;
@ -99,9 +107,11 @@ class Scene
const std::vector<GPUTriangle> &getTriangleData() const;
std::vector<GPUMaterial> &getMaterialData();
GPUVolume &getVolume();
std::vector<GPUBvh> &getBVH();
GPUVolume &getVolume();
GPUDebug &getDebug();
Camera *getCamera(void) const;
GPUMaterial getMaterial(int material_index);
@ -116,6 +126,7 @@ class Scene
std::set<int> _gpu_lights;
GPUVolume _gpu_volume;
GPUDebug _gpu_debug;
Camera *_camera;
};

27
scenes/dragon.rt Normal file
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@ -0,0 +1,27 @@
CAM 1.93858 0.961594 -0.0117614 -25 180 0.05 2.1639994842342176 29.263 5
MAT 255 255 255 0.0 1. 0.5 // white 0
MAT 255 10 10 0.0 0.0 0.0 // red 1
MAT 30 30 30 0.0 0.0 0.0 // gray 2
MAT 10 255 10 0.0 0.0 0.0 // green 3
MAT 255 255 255 0.0 0.0 0.0 // white 4
MAT 50 50 255 0.0 0.0 0.0 // white 5
MAT 255 255 255 5.0 0.0 0.0 // white light 6
MAT 255 255 255 0.0 0.0 0.0 TRN // glass 7
pl 0 0 -2 0 0 1 1 // back wall
pl 0 0 2 0 0 -1 5 // front wall
pl 2 0 0 -1 0 0 3 // right wall
pl -2 0 0 1 0 0 2 // left wall
pl 0 2 0 0 -1 0 0 // ceiling
pl 0 -2 0 0 1 0 2 // floor
qu -1 1.999 -1 2 0 0 0 0 2 6
OBJ obj/Dragon_80K.obj

20
scenes/test.rt
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@ -1,7 +1,6 @@
CAM 1.29625 0.667446 0.00169364 -24.6 178.8 0.03 1.3 45 5
CAM -1 0 0 0 0 0 1 90 5
MAT 255 255 255 0.0 0.75 1.0 // white 0
MAT 255 255 255 0.0 1. 0.5 // white 0
MAT 255 10 10 0.0 0.0 0.0 // red 1
MAT 30 30 30 0.0 0.0 0.0 // gray 2
@ -14,14 +13,13 @@ MAT 255 255 255 5.0 0.0 0.0 // white light 6
MAT 255 255 255 0.0 0.0 0.0 TRN // glass 7
pl 0 0 -2 0 0 1 1 // back wall
pl 0 0 2 0 0 -1 5 // front wall
pl 2 0 0 -1 0 0 3 // right wall
pl -2 0 0 1 0 0 2 // left wall
pl 0 2 0 0 -1 0 0 // ceiling
pl 0 -2 0 0 1 0 2 // floor
# pl 0 0 -40 0 0 1 1 // back wall
# pl 0 0 40 0 0 -1 5 // front wall
# pl 40 0 0 -1 0 0 3 // right wall
# pl -40 0 0 1 0 0 2 // left wall
# pl 0 60 0 0 -1 0 4 // ceiling
# pl 0 -10 0 0 1 0 2 // floor
qu -1 1.999 -1 2 0 0 0 0 2 6
# qu -20 59 -20 40 0 0 0 0 40 6
OBJ obj/Dragon_80K.obj

60
shaders/debug.glsl
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@ -20,6 +20,18 @@ layout(std140, binding = 0) uniform CameraData
GPUCamera camera;
};
struct GPUDebug
{
int enabled;
int mode;
int triangle_treshold;
int box_treshold;
};
layout(std140, binding = 2) uniform DebugData
{
GPUDebug debug;
};
struct GPUObject {
mat4 rotation;
@ -95,6 +107,12 @@ struct hitInfo
int mat_index;
};
struct Stats
{
int triangle_count;
int box_count;
};
#include "shaders/intersect.glsl"
int traceRay(Ray ray)
@ -114,7 +132,7 @@ int traceRay(Ray ray)
return (num_hit);
}
hitInfo traceBVH(Ray ray, inout int num_hit)
hitInfo traceBVH(Ray ray, inout Stats stats)
{
hitInfo hit;
@ -137,7 +155,7 @@ hitInfo traceBVH(Ray ray, inout int num_hit)
if (intersectRayBVH(ray, node))
{
num_hit++;
stats.box_count++;
if (node.is_leaf != 0)
{
@ -152,6 +170,7 @@ hitInfo traceBVH(Ray ray, inout int num_hit)
hit.normal = temp_hit.normal;
hit.obj_index = node.first_primitive + i;
}
stats.triangle_count++;
}
}
@ -181,6 +200,29 @@ Ray initRay(vec2 uv)
return (Ray(origin, ray_direction));
}
vec3 debugColor(vec2 uv)
{
Ray ray = initRay(uv);
Stats stats = Stats(0, 0);
hitInfo hit = traceBVH(ray, stats);
float box_display = float(stats.box_count) / float(debug.box_treshold);
float triangle_display = float(stats.triangle_count) / float(debug.triangle_treshold);
switch (debug.mode)
{
case 0:
return (hit.normal * 0.5 + 0.5) * int(hit.obj_index != -1);
case 1:
return (box_display < 1. ? vec3(box_display) : vec3(1., 0., 0.));
case 2:
return (triangle_display < 1. ? vec3(triangle_display) : vec3(1., 0., 0.));
}
return (vec3(0.));
}
void main()
{
ivec2 pixel_coords = ivec2(gl_GlobalInvocationID.xy);
@ -190,19 +232,7 @@ void main()
vec2 uv = ((vec2(pixel_coords)) / u_resolution) * 2.0 - 1.0;;
uv.x *= u_resolution.x / u_resolution.y;
Ray ray = initRay(uv);
int hits = 0;
hitInfo hit = traceBVH(ray, hits);
vec3 color = vec3(0.);
// if (hit.obj_index != -1)
// color = vec3(hit.normal);
if (hits > 150)
color = vec3(1., 0., 0.);
else
color = vec3(float(hits) / float(100));
vec3 color = debugColor(uv);
imageStore(output_image, pixel_coords, vec4(color, 1.));
}

45
srcs/RT.cpp
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@ -20,8 +20,8 @@ int main(int argc, char **argv)
return (1);
Window window(&scene, WIDTH, HEIGHT, "RT_GPU", 0);
Shader shader("shaders/vertex.vert", "shaders/frag.frag", "shaders/compute.glsl");
// Shader shader("shaders/vertex.vert", "shaders/frag.frag", "shaders/debug.glsl");
// Shader shader("shaders/vertex.vert", "shaders/frag.frag", "shaders/compute.glsl");
Shader shader("shaders/vertex.vert", "shaders/frag.frag", "shaders/debug.glsl");
GLint max_gpu_size;
glGetIntegerv(GL_MAX_SHADER_STORAGE_BLOCK_SIZE, &max_gpu_size);
@ -80,6 +80,12 @@ int main(int argc, char **argv)
glBufferData(GL_UNIFORM_BUFFER, sizeof(GPUVolume), nullptr, GL_STATIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, 1, volumeUBO);
GLuint debugUBO;
glGenBuffers(1, &debugUBO);
glBindBuffer(GL_UNIFORM_BUFFER, debugUBO);
glBufferData(GL_UNIFORM_BUFFER, sizeof(GPUDebug), nullptr, GL_STATIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, 2, debugUBO);
shader.attach();
@ -87,8 +93,11 @@ int main(int argc, char **argv)
size_t size = sizeof(vertices) / sizeof(Vertex) / 3;
shader.setupVertexBuffer(vertices, size);
std::vector<int> recorded_fps;
while (!window.shouldClose())
{
glUseProgram(shader.getProgramCompute());
glBindBuffer(GL_SHADER_STORAGE_BUFFER, objectSSBO);
@ -110,13 +119,36 @@ int main(int argc, char **argv)
glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, gpu_bvh.size() * sizeof(GPUBvh), gpu_bvh.data());
GPUCamera camera_data = scene.getCamera()->getGPUData();
Camera *camera = scene.getCamera();
// performance profiling
if (true && window.getFps() < 2000)
{
float time = (float)(glfwGetTime()) ;
recorded_fps.push_back((int)window.getFps());
camera->setPosition(glm::vec3(cos((time + 6.28) * 0.5), 0., sin((time + 6.28) * 0.5)));
glm::vec3 direction = glm::normalize(camera->getPosition());
float yaw = glm::degrees(atan2(direction.z, direction.x));
if ((int)yaw == 179)
break;
camera->setDirection(0, yaw - 180);
camera->updateCameraVectors();
}
//
GPUCamera camera_data = camera->getGPUData();
glBindBuffer(GL_UNIFORM_BUFFER, cameraUBO);
glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(GPUCamera), &camera_data);
glBindBuffer(GL_UNIFORM_BUFFER, volumeUBO);
glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(GPUVolume), &scene.getVolume());
glBindBuffer(GL_UNIFORM_BUFFER, debugUBO);
glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(GPUDebug), &scene.getDebug());
shader.set_int("u_frameCount", window.getFrameCount());
shader.set_int("u_objectsNum", object_data.size());
@ -146,5 +178,12 @@ int main(int argc, char **argv)
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
// performance profiling
std::ofstream file("fps.txt");
for (int i = 0; i < recorded_fps.size(); i++)
file << i << " " << recorded_fps[i] << std::endl;
file.close();
//
return (0);
}

14
srcs/class/Scene.cpp
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@ -17,10 +17,15 @@ Scene::Scene()
_camera = new Camera(glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f), -90.0f, 0.0f);
_gpu_volume.enabled = 0;
_gpu_volume.sigma_a = glm::vec3(0.0001f);
_gpu_volume.sigma_a = glm::vec3(0.0000f);
_gpu_volume.sigma_s = glm::vec3(0.0800f);
_gpu_volume.sigma_t = _gpu_volume.sigma_a + _gpu_volume.sigma_s;
_gpu_volume.g = 0.9f;
_gpu_volume.g = 1.0f;
_gpu_debug.enabled = 0;
_gpu_debug.mode = 0;
_gpu_debug.triangle_treshold = 1;
_gpu_debug.box_treshold = 1;
}
Scene::~Scene()
@ -193,6 +198,11 @@ GPUVolume &Scene::getVolume()
return (_gpu_volume);
}
GPUDebug &Scene::getDebug()
{
return (_gpu_debug);
}
std::vector<GPUBvh> &Scene::getBVH()
{
return (_gpu_bvh);

9
srcs/class/Window.cpp
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@ -248,6 +248,15 @@ void Window::imGuiRender()
ImGui::End();
ImGui::Begin("Debug");
has_changed |= ImGui::Checkbox("Enable", (bool *)(&_scene->getDebug().enabled));
ImGui::Separator();
has_changed |= ImGui::SliderInt("Debug mode", &_scene->getDebug().mode, 0, 2);
has_changed |= ImGui::SliderInt("Box treshold", &_scene->getDebug().box_treshold, 1, 2000);
has_changed |= ImGui::SliderInt("Triangle treshold", &_scene->getDebug().triangle_treshold, 1, 2000);
ImGui::End();
ImGui::Render();
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());