diff options
Diffstat (limited to 'model.c')
| -rw-r--r-- | model.c | 60 |
1 files changed, 60 insertions, 0 deletions
@@ -0,0 +1,60 @@ +/* + * Copyright (C) 2018 Tomasz Kramkowski <tk@the-tk.com> + * SPDX-License-Identifier: MIT + */ +#include <assert.h> + +#include "eprintf.h" +#include "linmath.h" +#include "model.h" +#include "nelem.h" +#include "vertex.h" + +void model_load(struct model *mdl, const struct fmd *fmd) +{ + GLuint vbo, ebo; + struct vertex *v; + + assert(mdl != NULL); + assert(fmd != NULL); + + gl_va_gen(1, &mdl->vao); + gl_va_bind(mdl->vao); + + gl_buf_gen(1, &vbo); + gl_buf_bind(GL_ARRAY_BUFFER, vbo); + gl_buf_data(GL_ARRAY_BUFFER, fmd->nverts * sizeof *fmd->verts, fmd->verts, GL_STATIC_DRAW); + + gl_buf_gen(1, &ebo); + gl_buf_bind(GL_ELEMENT_ARRAY_BUFFER, ebo); + gl_buf_data(GL_ELEMENT_ARRAY_BUFFER, fmd->ntris * sizeof *fmd->tris, fmd->tris, GL_STATIC_DRAW); + + v = &fmd->verts[0]; + gl_va_define(0, NELEM(v->pos), GL_FLOAT, GL_FALSE, sizeof *v, (void *)offsetof(struct vertex, pos)); + gl_va_enable(0); + gl_va_define(1, NELEM(v->norm), GL_FLOAT, GL_FALSE, sizeof *v, (void *)offsetof(struct vertex, norm)); + gl_va_enable(1); + gl_va_define(2, NELEM(v->uv), GL_FLOAT, GL_FALSE, sizeof *v, (void *)offsetof(struct vertex, uv)); + gl_va_enable(2); + + // TODO: materials, use a shared material set + + mdl->nmeshes = fmd->nmeshes; + mdl->meshes = emalloc(mdl->nmeshes * sizeof *mdl->meshes); + for (int i = 0; i < fmd->nmeshes; i++) { + struct mesh *m = &mdl->meshes[i]; + struct fmd_mesh *fm = &fmd->meshes[i]; + m->mtl = NULL; + m->elems.idx = fm->tidx * NELEM(*fmd->tris); + m->elems.cnt = fm->tcnt * NELEM(*fmd->tris); + } +} + +void model_render(struct model *mdl) +{ + gl_va_bind(mdl->vao); + for (int i = 0; i < mdl->nmeshes; i++) { + struct mesh *m = &mdl->meshes[i]; + gl_draw_elems(GL_TRIANGLES, m->elems.cnt, GL_UNSIGNED_INT, &((GLuint *)NULL)[m->elems.idx]); + } +} |