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#include "cglm/types.h"
#include "glad/glad.h"
#include "block.h"
#include "util.h"
#include "cglm/cglm.h"
#include "block.h"
#include <string.h>
int block_init(vec3 pos, struct block* blk) {
// Store buffer data into struct
// Initialize vbo and ebo for block
memcpy(blk->coords, pos, sizeof(vec3));
float vertices[] = {
0.5f, 0.5f, 0.0f, // top-right
-0.5f, 0.5f, 0.0f, // top-left
-0.5f, -0.5f, 0.0f, // bottom-left
0.5f, -0.5f, 0.0f, // bottom-right
};
float colors[] = {
1.0f, 0.0f, 0.0f, // r,g,b of first point.
0.0f, 1.0f, 0.0f, // r,g,b of second point.
0.0f, 0.0f, 1.0f, // r,g,b of third point.
1.0f, 1.0f, 1.0f // r,g,b of fourth point.
};
int vertex_order[] = { 1, 2, 3, 3, 0, 1 };
//TODO:
//1. Create VAO for mesh
//2. Create VBOs for vertices and colors
//3. Set EBO for index order
create_vbo(&blk->_vbo1, (void*)vertices, sizeof(float) * 12);
create_vbo(&blk->_vbo2, (void*)colors, sizeof(float) * 12);
create_ebo(&blk->_ebo, (void*)vertex_order, sizeof(int) * 6);
glGenVertexArrays(1, &blk->_vao);
glBindVertexArray(blk->_vao);
// Enable 2 attribs - position and color
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
// set vao_buffer to pos buffer obj
glBindBuffer(GL_ARRAY_BUFFER, blk->_vbo1);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
// set vao_buffer to color buffer obj
glBindBuffer(GL_ARRAY_BUFFER, blk->_vbo2);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, blk->_ebo);
return 0;
}
// Register block vbos and ebos to context
int block_draw(struct block* blk) {
glBindVertexArray(blk->_vao);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
return 0;
}
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