add: added lighting classes and a shader to use multiple lights
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4 changed files with 359 additions and 64 deletions
120
main.cpp
120
main.cpp
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@ -16,6 +16,7 @@
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#include <myEngine/camera.hpp>
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#include <myEngine/model.hpp>
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#include <myEngine/object.hpp>
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#include <myEngine/lighting.hpp>
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void framebuffer_size_callback(GLFWwindow* window, int width, int height);
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void processInput(GLFWwindow *window);
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@ -85,10 +86,7 @@ int main()
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ImGui_ImplOpenGL3_Init("#version 330 core");
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// Shaders
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Shader ourShader("resources/shaders/vert.glsl", "resources/shaders/frag.glsl");
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Shader directional_lightShader("resources/shaders/vert.glsl", "resources/shaders/directional_light.glsl");
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Shader point_lightShader("resources/shaders/vert.glsl", "resources/shaders/point_light.glsl");
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Shader spotlight_lightShader("resources/shaders/vert.glsl", "resources/shaders/spotlight_light.glsl");
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Shader light_shader("resources/shaders/vert.glsl", "resources/shaders/light_shader.glsl");
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Shader light_cubeShader("resources/shaders/vert.glsl", "resources/shaders/light_object.glsl");
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// Models
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@ -101,6 +99,32 @@ int main()
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Object object3(croissant, glm::vec3(-1.0f, 0.0f, 0.0f), glm::vec3(0.1f, 0.1f, 0.1f), glm::vec3(0.0f, 0.0f, 0.0f));
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Object light_cube(cube, glm::vec3(1.2f, 1.0f, 2.0f), glm::vec3(0.05f, 0.05f, 0.05f), glm::vec3(0.0f, 0.0f, 0.0f));
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// Lights
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DirectLight directLight(glm::vec3(-0.2f, -1.0f, -0.3f),
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glm::vec3(1.0f, 1.0f, 1.0f),
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glm::vec3(0.2f, 0.2f, 0.2f),
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glm::vec3(0.5f, 0.5f, 0.5f),
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glm::vec3(1.0f, 1.0f, 1.0f));
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SpotLight spotLight(glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(1.0f, 1.0f, 1.0f),
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12.55f, 17.5f,
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glm::vec3(1.0f, 1.0f, 1.0f), glm::vec3(0.2f, 0.2f, 0.2f),
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glm::vec3(0.5f, 0.5f, 0.5f), glm::vec3(1.0f, 1.0f, 1.0f),
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1.0f, 0.09f,
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0.032f);
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std::vector<PointLight> pointLights;
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pointLights.emplace_back(glm::vec3(1.2f, 1.0f, 2.0f),
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glm::vec3(1.0f, 1.0f, 1.0f),
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glm::vec3(0.2f, 0.2f, 0.2f),
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glm::vec3(0.5f, 0.5f, 0.5f),
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glm::vec3(1.0f, 1.0f, 1.0f),
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1.0f, 0.09f, 0.032f);
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pointLights.emplace_back(glm::vec3(-1.2f, 1.0f, 2.0f),
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glm::vec3(1.0f, 1.0f, 1.0f),
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glm::vec3(0.2f, 0.2f, 0.2f),
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glm::vec3(0.5f, 0.5f, 0.5f),
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glm::vec3(1.0f, 1.0f, 1.0f),
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1.0f, 0.09f, 0.032f);
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static float positionX = 0.0f;
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static float positionY = 0.0f;
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static float positionZ = 0.0f;
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@ -111,9 +135,6 @@ int main()
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static float* light_color = new float[3]{1.0f, 1.0f, 1.0f};
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static float light_cutoff = 12.5f;
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static float light_outerCutoff = 17.5f;
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static float light_directionX = 0.0f;
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static float light_directionY = 0.0f;
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static float light_directionZ = -1.0f;
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while(!glfwWindowShouldClose(window))
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{
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@ -139,7 +160,6 @@ int main()
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ImGui::Begin("Settings");
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ImGui::Text("FPS: %.2f", 1.0f / deltaTime);
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ImGui::Text("Camera Direction: (%.2f, %.2f, %.2f)", camera.Front.x, camera.Front.y, camera.Front.z);
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ImGui::SliderFloat("Object 1 Position X", &positionX, -5.0f, 5.0f);
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ImGui::SliderFloat("Object 1 Position Y", &positionY, -5.0f, 5.0f);
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ImGui::SliderFloat("Object 1 Position Z", &positionZ, -5.0f, 5.0f);
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@ -149,79 +169,53 @@ int main()
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ImGui::ColorEdit3("Light Cube Color", light_color);
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ImGui::SliderFloat("Light Cutoff", &light_cutoff, 0.0f, 90.0f);
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ImGui::SliderFloat("Light Outer Cutoff", &light_outerCutoff, 0.0f, 90.0f);
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ImGui::SliderFloat("Light Direction X", &light_directionX, -1.0f, 1.0f);
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ImGui::SliderFloat("Light Direction Y", &light_directionY, -1.0f, 1.0f);
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ImGui::SliderFloat("Light Direction Z", &light_directionZ, -1.0f, 1.0f);
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ImGui::End();
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glm::mat4 view = camera.GetViewMatrix();
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glm::mat4 projection = glm::perspective(glm::radians(45.0f), float(width) / float(height), 0.1f, 100.0f);
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// Bacis lighting
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ourShader.setVec3("viewPos", camera.Position);
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ourShader.setVec3("light.position", 1.2f, 1.0f, 2.0f);
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ourShader.setVec3("light.color", 1.0f, 1.0f, 1.0f);
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ourShader.setVec3("light.ambient", 0.2f, 0.2f, 0.2f);
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ourShader.setVec3("light.diffuse", 0.5f, 0.5f, 0.5f);
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ourShader.setVec3("light.specular", 1.0f, 1.0f, 1.0f);
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ourShader.setMat4("view", view);
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ourShader.setMat4("projection", projection);
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light_shader.use();
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light_shader.setMat4("view", view);
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light_shader.setVec3("viewPos", camera.Position);
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light_shader.setMat4("projection", projection);
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// Directional light
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directional_lightShader.setVec3("light.direction", -0.2f, -1.0f, -0.3f);
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directional_lightShader.setVec3("light.color", 1.0f, 1.0f, 1.0f);
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directional_lightShader.setVec3("light.ambient", 0.2f, 0.2f, 0.2f);
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directional_lightShader.setVec3("light.diffuse", 0.5f, 0.5f, 0.5f);
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directional_lightShader.setVec3("light.specular", 1.0f, 1.0f, 1.0f);
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directional_lightShader.setMat4("view", view);
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directional_lightShader.setMat4("projection", projection);
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directLight.use(light_shader);
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// Spotlight
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spotLight.setPosition(camera.Position);
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spotLight.setDirection(camera.Front);
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spotLight.setCutOff(light_cutoff);
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spotLight.setOuterCutOff(light_outerCutoff);
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spotLight.use(light_shader);
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// Point light
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point_lightShader.use();
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point_lightShader.setVec3("viewPos", camera.Position);
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point_lightShader.setVec3("light.position", lightCubePositionX, lightCubePositionY, lightCubePositionZ);
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point_lightShader.setVec3("light.color", light_color[0], light_color[1], light_color[2]);
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point_lightShader.setVec3("light.ambient", 0.2f, 0.2f, 0.2f);
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point_lightShader.setVec3("light.diffuse", 0.5f, 0.5f, 0.5f);
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point_lightShader.setVec3("light.specular", 1.0f, 1.0f, 1.0f);
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point_lightShader.setFloat("light.constant", 1.0f);
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point_lightShader.setFloat("light.linear", 0.09f);
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point_lightShader.setFloat("light.quadratic", 0.032f);
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point_lightShader.setMat4("view", view);
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point_lightShader.setMat4("projection", projection);
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// Spotlight light
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spotlight_lightShader.use();
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spotlight_lightShader.setVec3("viewPos", camera.Position);
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spotlight_lightShader.setVec3("light.position", lightCubePositionX, lightCubePositionY, lightCubePositionZ);
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spotlight_lightShader.setVec3("light.direction", light_directionX, light_directionY, light_directionZ);
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spotlight_lightShader.setVec3("light.color", light_color[0], light_color[1], light_color[2]);
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spotlight_lightShader.setVec3("light.ambient", 0.2f, 0.2f, 0.2f);
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spotlight_lightShader.setVec3("light.diffuse", 0.5f, 0.5f, 0.5f);
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spotlight_lightShader.setVec3("light.specular", 1.0f, 1.0f, 1.0f);
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spotlight_lightShader.setFloat("light.constant", 1.0f);
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spotlight_lightShader.setFloat("light.linear", 0.09f);
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spotlight_lightShader.setFloat("light.quadratic", 0.032f);
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spotlight_lightShader.setFloat("light.cutOff", glm::cos(glm::radians(light_cutoff)));
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spotlight_lightShader.setFloat("light.outerCutOff", glm::cos(glm::radians(light_outerCutoff)));
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spotlight_lightShader.setMat4("view", view);
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spotlight_lightShader.setMat4("projection", projection);
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light_shader.setInt("pointLightCount", static_cast<int>(pointLights.size()));
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pointLights[0].setPosition(glm::vec3(lightCubePositionX, lightCubePositionY, lightCubePositionZ));
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pointLights[0].setColor(glm::vec3(light_color[0], light_color[1], light_color[2]));
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for (size_t i = 0; i < pointLights.size(); ++i)
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{
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pointLights[i].use(light_shader, static_cast<int>(i));
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}
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object1.setPosition(glm::vec3(positionX, positionY, positionZ));
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object1.Draw(spotlight_lightShader, deltaTime);
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object1.Draw(light_shader, deltaTime);
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object2.setAcceleration(glm::vec3(0.0f, 0.001f, 0.0f));
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object2.Draw(spotlight_lightShader, deltaTime);
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object2.Draw(light_shader, deltaTime);
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object3.setAcceleration(glm::vec3(0.0f, -0.001f, 0.0f));
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object3.Draw(spotlight_lightShader, deltaTime);
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object3.Draw(light_shader, deltaTime);
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// Light cube shader
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light_cubeShader.use();
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light_cubeShader.setMat4("view", view);
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light_cubeShader.setMat4("projection", projection);
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light_cubeShader.setVec3("lightColor", light_color[0], light_color[1], light_color[2]);
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light_cube.setPosition(glm::vec3(lightCubePositionX, lightCubePositionY, lightCubePositionZ));
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light_cube.Draw(light_cubeShader, deltaTime);
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for (size_t i = 0; i < pointLights.size(); ++i)
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{
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light_cube.setPosition(pointLights[i].getPosition());
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light_cubeShader.setVec3("lightColor", pointLights[i].getColor());
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light_cube.Draw(light_cubeShader, deltaTime);
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}
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ImGui::Render();
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ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
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