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/*
* Copyright (C) 2018 Tomasz Kramkowski <tk@the-tk.com>
* SPDX-License-Identifier: MIT
*/
#include <assert.h>
#include "eprintf.h"
#include "glprog.h"
#include "loadgl.h"
enum {
LOGSIZE = 1024,
};
static GLuint load_shader(const struct shdrdat *shdr)
{
GLuint id;
GLint success;
char log[LOGSIZE];
id = gl_shdr_create(shdr->type);
gl_shdr_source(id, 1, &shdr->src, &shdr->len);
gl_shdr_compile(id);
gl_shdr_param(id, GL_COMPILE_STATUS, &success);
if (!success) {
gl_shdr_infolog(id, sizeof log, NULL, log);
eprintf("Failed to compile shader:\n%s", log);
}
return id;
}
void detach_shaders(GLuint prog)
{
GLsizei count;
GLuint shdr;
while (gl_prog_getshdrs(prog, 1, &count, &shdr), count)
gl_prog_detachshdr(prog, shdr);
}
GLuint glprog_load(int nshdrs, const struct shdrdat *shdrs, int nunis, const struct unidat *unis)
{
GLuint prog;
GLint success;
char log[LOGSIZE];
assert(nshdrs > 0);
assert(shdrs != NULL);
assert(nunis <= 0 || unis != NULL);
prog = gl_prog_create();
for (int i = 0; i < nshdrs; i++) {
GLuint shdr = load_shader(&shdrs[i]);
gl_prog_attachshdr(prog, shdr);
gl_shdr_del(shdr);
}
gl_prog_link(prog);
gl_prog_param(prog, GL_LINK_STATUS, &success);
if (!success) {
gl_prog_infolog(prog, sizeof log, NULL, log);
eprintf("Failed to link program:\n%s", log);
}
detach_shaders(prog);
for (int i = 0; i < nunis; i++)
*unis[i].loc = gl_uni_loc(prog, unis[i].name);
return prog;
}
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