tom/RT_GPU
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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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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);
}