67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
|
#include "./program.h"
|
||
|
|
|
||
|
|
#include <assert.h>
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#include <GL/glew.h>
|
||
|
|
|
||
|
|
#include "util/math/algorithm.h"
|
||
|
|
|
||
|
|
#include "./shader.h"
|
||
|
|
|
||
|
|
gleasy_program_t gleasy_program_new(
|
||
|
|
const char* header, size_t header_len,
|
||
|
|
const char* vsrc, size_t vsrc_len,
|
||
|
|
const char* fsrc, size_t fsrc_len) {
|
||
|
|
assert(header != NULL || header_len == 0);
|
||
|
|
assert(vsrc != NULL || vsrc_len == 0);
|
||
|
|
assert(fsrc != NULL || fsrc_len == 0);
|
||
|
|
|
||
|
|
gleasy_program_t program = glCreateProgram();
|
||
|
|
if (program == 0) {
|
||
|
|
fprintf(stderr, "failed to create program");
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
|
||
|
|
const gleasy_shader_t vshader =
|
||
|
|
gleasy_shader_new(GL_VERTEX_SHADER, header, header_len, vsrc, vsrc_len);
|
||
|
|
const gleasy_shader_t fshader =
|
||
|
|
gleasy_shader_new(GL_FRAGMENT_SHADER, header, header_len, fsrc, fsrc_len);
|
||
|
|
|
||
|
|
glAttachShader(program, vshader);
|
||
|
|
glDeleteShader(vshader);
|
||
|
|
|
||
|
|
glAttachShader(program, fshader);
|
||
|
|
glDeleteShader(fshader);
|
||
|
|
|
||
|
|
glLinkProgram(program);
|
||
|
|
|
||
|
|
GLint ok;
|
||
|
|
glGetProgramiv(program, GL_LINK_STATUS, &ok);
|
||
|
|
if (ok == GL_FALSE) {
|
||
|
|
char log[1024];
|
||
|
|
const int len =
|
||
|
|
gleasy_program_get_log(program, log, sizeof(log)/sizeof(log[0]));
|
||
|
|
fprintf(stderr, "failed to link program\n%.*s\n", len, log);
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
return program;
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t gleasy_program_get_log(
|
||
|
|
gleasy_program_t program, char* dst, size_t maxlen) {
|
||
|
|
assert(program != 0);
|
||
|
|
|
||
|
|
GLint len;
|
||
|
|
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &len);
|
||
|
|
if (dst == NULL) return len;
|
||
|
|
|
||
|
|
len = MATH_MIN(len, (GLint) maxlen);
|
||
|
|
if (len == 0) return 0;
|
||
|
|
|
||
|
|
glGetProgramInfoLog(program, len, &len, (GLchar*) dst);
|
||
|
|
return len;
|
||
|
|
}
|