50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
#include "mesh.hpp"
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#include "dbc.hpp"
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#include "config.hpp"
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void Mesh::draw(Shader &shader, bool with_textures) {
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if(with_textures) {
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apply_textures(shader);
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}
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glBindVertexArray(VAO);
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glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, 0);
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glBindVertexArray(0);
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glActiveTexture(GL_TEXTURE0);
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}
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void Mesh::apply_textures(const Shader& shader) {
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for(unsigned int i = 0; i < textures.size(); i++) {
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Texture& texture = textures[i];
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texture.uniform_id = glGetUniformLocation(shader.ID, texture.target.c_str());
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glActiveTexture(GL_TEXTURE0 + i);
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// move this to setup_mesh
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glUniform1i(texture.uniform_id, i);
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glBindTexture(GL_TEXTURE_2D, texture.id);
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}
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}
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void Mesh::setup_mesh() {
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glGenVertexArrays(1, &VAO);
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glGenBuffers(1, &VBO);
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glGenBuffers(1, &EBO);
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glBindVertexArray(VAO);
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glBindBuffer(GL_ARRAY_BUFFER, VBO);
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glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(Vertex), vertices.data(), GL_STATIC_DRAW);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(unsigned int), indices.data(), GL_STATIC_DRAW);
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// this matches the locations in the vertex shader
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glEnableVertexAttribArray(0);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, position));
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glEnableVertexAttribArray(1);
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glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, normal));
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glEnableVertexAttribArray(2);
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glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, tex_coords));
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}
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