GameObjects
Began to add GameObjects, starting with the player.
This commit is contained in:
onTheZero
240
MeshRenderer.cpp
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240
MeshRenderer.cpp
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#include <MeshRenderer.h>
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#include <iostream>
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// when creating a meshrenderer the important question is "do all these vertices share the same shader?"
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MeshRenderer::MeshRenderer()
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{
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}
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MeshRenderer::~MeshRenderer()
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{
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glDeleteVertexArrays(1, &this->VAO);
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}
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void MeshRenderer::Setup
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(
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std::vector<float> vertices,
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std::vector<float> normals,
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std::vector<float> colors,
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std::vector<unsigned int> indices,
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Shader* lit_shader
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)
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{
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this->vertices = vertices;
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this->normals = normals;
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this->colors = colors;
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this->indices = indices;
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this->lit_shader = lit_shader;
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this->shadow_shader = shadow_shader;
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this->SetupBuffers();
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//if (shadow_shader != nullptr)
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//{
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// //std::cout << "Setup lighting" << std::endl;
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// this->SetupLighting();
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//}
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}
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void MeshRenderer::Render(Shader &shader)
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{
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//std::cout << "Rendering with Shader: " << shader.ID << std::endl;
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shader.Use();
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glm::mat4 model = glm::mat4(1.0f);
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shader.SetMatrix4("model", model);
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glBindVertexArray(this->VAO);
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//std::cout << this->indices.size() << std::endl;
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glDrawElements(GL_TRIANGLES, this->indices.size(), GL_UNSIGNED_INT, 0);
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glBindVertexArray(0);
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}
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void MeshRenderer::Render
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(
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glm::mat4 projection,
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glm::mat4 view,
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glm::vec3 light_position,
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glm::vec3 light_color,
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glm::vec3 view_position
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)
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{
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glm::mat4 model = glm::mat4(1.0f);
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//glEnable(GL_CULL_FACE);
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//glCullFace(GL_BACK);
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//if (shadow_shader != nullptr)
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//{
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// this->shader = shadow_shader;
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// RenderShadows(projection, view, model, light_position);
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//}
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this->shader = lit_shader;
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RenderObject(projection, view, model, light_position, light_color, view_position);
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}
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void MeshRenderer::Render
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(
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glm::mat4 projection,
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glm::mat4 view,
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glm::vec3 light_position,
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glm::vec3 light_color,
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glm::vec3 view_position,
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glm::vec3 position,
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glm::vec3 scale,
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glm::vec3 rotation
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)
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{
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glm::mat4 model = glm::mat4(1.0f);
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model = glm::translate(model, position);
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model = glm::rotate(model, glm::radians(rotation.x), glm::vec3(1, 0, 0));
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model = glm::rotate(model, glm::radians(rotation.y), glm::vec3(0, 1, 0));
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model = glm::rotate(model, glm::radians(rotation.z), glm::vec3(0, 0, 1));
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model = glm::scale(model, scale);
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if (shadow_shader != nullptr)
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{
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this->lit_shader = shadow_shader;
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RenderShadows(projection, view, model, light_position);
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}
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this->shader = lit_shader;
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RenderObject(projection, view, model, light_position, light_color, view_position);
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}
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void MeshRenderer::SetupBuffers()
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{
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/*for (int i = 0; i < this->normals.size(); i += 3)
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{
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std::cout << this->normals[i] << " " << this->normals[i + 1] << " " << this->normals[i + 2] << std::endl;
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}*/
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glGenVertexArrays(1, &this->VAO);
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unsigned int VBO, NBO, CBO, EBO;
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glGenBuffers(1, &VBO);
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glGenBuffers(1, &NBO);
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glGenBuffers(1, &CBO);
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glGenBuffers(1, &EBO);
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glBindVertexArray(this->VAO);
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glBindBuffer(GL_ARRAY_BUFFER, VBO);
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glBufferData(GL_ARRAY_BUFFER, this->vertices.size() * sizeof(float), this->vertices.data(), GL_STATIC_DRAW);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
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glEnableVertexAttribArray(0);
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glBindBuffer(GL_ARRAY_BUFFER, NBO);
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glBufferData(GL_ARRAY_BUFFER, this->normals.size() * sizeof(float), this->normals.data(), GL_STATIC_DRAW);
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glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
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glEnableVertexAttribArray(1);
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glBindBuffer(GL_ARRAY_BUFFER, CBO);
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glBufferData(GL_ARRAY_BUFFER, this->colors.size() * sizeof(float), this->colors.data(), GL_STATIC_DRAW);
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glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
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glEnableVertexAttribArray(2);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, this->indices.size() * sizeof(unsigned int), this->indices.data(), GL_STATIC_DRAW);
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glBindVertexArray(0);
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}
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void MeshRenderer::SetupLighting()
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{
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/*glGenFramebuffers(1, &depth_map_FBO);
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glGenTextures(1, &depth_map);
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for (unsigned int i = 0; i < 6; i++)
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{
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glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_DEPTH_COMPONENT, SHADOW_WIDTH, SHADOW_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
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}
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glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
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glBindFramebuffer(GL_FRAMEBUFFER, depth_map_FBO);
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glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depth_map, 0);
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glDrawBuffer(GL_NONE);
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glReadBuffer(GL_NONE);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);*/
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}
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void MeshRenderer::RenderObject
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(
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glm::mat4 projection,
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glm::mat4 view,
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glm::mat4 model,
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glm::vec3 light_position,
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glm::vec3 light_color,
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glm::vec3 view_position
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)
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{
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this->shader->Use();
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this->shader->SetMatrix4("projection", projection);
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this->shader->SetMatrix4("view", view);
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this->shader->SetMatrix4("model", model);
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this->shader->SetVector3f("lightPos", light_position);
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this->shader->SetVector3f("lightColor", light_color);
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this->shader->SetVector3f("viewPos", view_position);
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this->shader->SetFloat("far_plane", 25.0f);
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glBindVertexArray(this->VAO);
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glDrawElements(GL_TRIANGLES, this->indices.size(), GL_UNSIGNED_INT, 0);
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glBindVertexArray(0);
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}
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void MeshRenderer::RenderShadows(glm::mat4 projection, glm::mat4 view, glm::mat4 model, glm::vec3 light_position)
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{
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this->shader->Use();
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this->shader->SetMatrix4("projection", projection);
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this->shader->SetMatrix4("view", view);
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this->shader->SetMatrix4("model", model);
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float near_plane = 1.0f;
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float far_plane = 50.0f;
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glm::mat4 shadowProj = glm::perspective(glm::radians(90.0f), (float)SHADOW_WIDTH / (float)SHADOW_HEIGHT, near_plane, far_plane);
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std::vector<glm::mat4> shadowTransforms;
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shadowTransforms.push_back(shadowProj * glm::lookAt(light_position, light_position + glm::vec3(1.0f, 0.0f, 0.0f), glm::vec3(0.0f, -1.0f, 0.0f)));
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shadowTransforms.push_back(shadowProj * glm::lookAt(light_position, light_position + glm::vec3(-1.0f, 0.0f, 0.0f), glm::vec3(0.0f, -1.0f, 0.0f)));
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shadowTransforms.push_back(shadowProj * glm::lookAt(light_position, light_position + glm::vec3(0.0f, 1.0f, 0.0f), glm::vec3(0.0f, 0.0f, 1.0f)));
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shadowTransforms.push_back(shadowProj * glm::lookAt(light_position, light_position + glm::vec3(0.0f, -1.0f, 0.0f), glm::vec3(0.0f, 0.0f, -1.0f)));
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shadowTransforms.push_back(shadowProj * glm::lookAt(light_position, light_position + glm::vec3(0.0f, 0.0f, 1.0f), glm::vec3(0.0f, -1.0f, 0.0f)));
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shadowTransforms.push_back(shadowProj * glm::lookAt(light_position, light_position + glm::vec3(0.0f, 0.0f, -1.0f), glm::vec3(0.0f, -1.0f, 0.0f)));
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glViewport(0, 0, SHADOW_WIDTH, SHADOW_HEIGHT);
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glBindFramebuffer(GL_FRAMEBUFFER, depth_map_FBO);
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//glClear(GL_DEPTH_BUFFER_BIT);
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for (unsigned int i = 0; i < 6; ++i)
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{
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std::string matrix_name = "shadowMatrices[" + std::to_string(i) + "]";
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this->shader->SetMatrix4(matrix_name.c_str(), shadowTransforms[i]);
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}
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this->shader->SetFloat("far_plane", far_plane);
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this->shader->SetVector3f("lightPos", light_position);
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glBindVertexArray(this->VAO);
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glDrawElements(GL_TRIANGLES, this->indices.size(), GL_UNSIGNED_INT, 0);
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glBindVertexArray(0);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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glViewport(0, 0, SCR_WIDTH, SCR_HEIGHT);
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//glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glBindTexture(GL_TEXTURE_CUBE_MAP, depth_map);
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}
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