Gnarwhal/ludum_dare_39
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Entire project

Browse source
This commit is contained in:
Gnarwhal 2024-08-07 04:58:07 +00:00
commit e1c6c794d4
Signed by: Gnarwhal
GPG key ID: 0989A73D8C421174
108 changed files with 2908 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

68
src/com/gnarly/engine/model/Vao.java Normal file
View file

@ -0,0 +1,68 @@
package com.gnarly.engine.model;
import static org.lwjgl.opengl.GL11.GL_FLOAT;
import static org.lwjgl.opengl.GL11.GL_TRIANGLES;
import static org.lwjgl.opengl.GL11.GL_UNSIGNED_INT;
import static org.lwjgl.opengl.GL11.glDrawElements;
import static org.lwjgl.opengl.GL15.GL_ARRAY_BUFFER;
import static org.lwjgl.opengl.GL15.GL_ELEMENT_ARRAY_BUFFER;
import static org.lwjgl.opengl.GL15.GL_STATIC_DRAW;
import static org.lwjgl.opengl.GL15.glBindBuffer;
import static org.lwjgl.opengl.GL15.glBufferData;
import static org.lwjgl.opengl.GL15.glDeleteBuffers;
import static org.lwjgl.opengl.GL15.glGenBuffers;
import static org.lwjgl.opengl.GL20.glDisableVertexAttribArray;
import static org.lwjgl.opengl.GL20.glEnableVertexAttribArray;
import static org.lwjgl.opengl.GL20.glVertexAttribPointer;
import static org.lwjgl.opengl.GL30.glBindVertexArray;
import static org.lwjgl.opengl.GL30.glDeleteVertexArrays;
import static org.lwjgl.opengl.GL30.glGenVertexArrays;
import java.util.ArrayList;
public class Vao {
private int numAttribs = 0;
private int vao, ibo, count;
private ArrayList<Integer> vbos = new ArrayList<>();
public Vao(float[] vertices, int[] indices) {
vao = glGenVertexArrays();
glBindVertexArray(vao);
addAttribute(vertices, 3);
ibo = glGenBuffers();
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices, GL_STATIC_DRAW);
count = indices.length;
}
public void addAttribute(float[] data, int size) {
int vbo = glGenBuffers();
vbos.add(vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, data, GL_STATIC_DRAW);
glVertexAttribPointer(numAttribs, size, GL_FLOAT, false, 0, 0);
++numAttribs;
}
public void render() {
glBindVertexArray(vao);
for (int i = 0; i < numAttribs; ++i)
glEnableVertexAttribArray(i);
glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, 0);
for (int i = 0; i < numAttribs; ++i)
glDisableVertexAttribArray(i);
}
public void destroy() {
for(int vbo : vbos)
glDeleteBuffers(vbo);
glDeleteBuffers(ibo);
glDeleteVertexArrays(vao);
}
}