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Started a simple font text class to do font rendering.

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This commit is contained in:
Zed A. Shaw 2026-09-12 16:42:11 -04:00
parent 1830faf4c9
commit b244c903a6
137 changed files with 16135 additions and 0 deletions
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50
32-text-rendering/src/mesh.cpp Normal file
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#include "mesh.hpp"
#include "dbc.hpp"
#include "config.hpp"
void Mesh::draw(Shader &shader, bool with_textures) {
if(with_textures) {
apply_textures(shader);
}
glBindVertexArray(VAO);
glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
glActiveTexture(GL_TEXTURE0);
}
void Mesh::apply_textures(const Shader& shader) {
for(unsigned int i = 0; i < textures.size(); i++) {
Texture& texture = textures[i];
texture.uniform_id = glGetUniformLocation(shader.ID, texture.target.c_str());
glActiveTexture(GL_TEXTURE0 + i);
// move this to setup_mesh
glUniform1i(texture.uniform_id, i);
glBindTexture(GL_TEXTURE_2D, texture.id);
}
}
void Mesh::setup_mesh() {
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(Vertex), vertices.data(), GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(unsigned int), indices.data(), GL_STATIC_DRAW);
// this matches the locations in the vertex shader
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, position));
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, normal));
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, tex_coords));
}