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/*
* Copyright (C) 2018 Tomasz Kramkowski <tk@the-tk.com>
* SPDX-License-Identifier: MIT
*/
#include <setjmp.h>
#include "loadgl.h"
#define LGL_FUNC(name, glname) \
name##_func *name; \
static const char *name##_gln = #glname;
FUNCS()dnl
static void *load_func(const char *name, lgl_loadfunc *load, jmp_buf env)
{
void *ret;
ret = load(name);
if (ret == NULL)
longjmp(env, LGL_MISSING);
return ret;
}
enum lgl_status lgl_load(lgl_loadfunc *load)
{
enum lgl_status status;
jmp_buf env;
status = setjmp(env);
if (status != 0)
return status;
#define LGL_LOAD(name) name = (name##_func *)load_func(name##_gln, load, env);
LOADS()dnl
return LGL_OK;
}
const char *lgl_strerror(enum lgl_status status)
{
switch (status) {
case LGL_OK: return "Success";
case LGL_MISSING: return "Missing function";
}
return "Unknown";
}
const char *gl_strerror(GLenum error)
{
switch (error) {
case GL_NO_ERROR: return "No error";
case GL_INVALID_ENUM: return "Invalid enumeration";
case GL_INVALID_VALUE: return "Invalid value";
case GL_INVALID_OPERATION: return "Invalid operation";
case GL_STACK_OVERFLOW: return "Stack overflow";
case GL_STACK_UNDERFLOW: return "Stack underflow";
case GL_OUT_OF_MEMORY: return "Out of memory";
case GL_INVALID_FRAMEBUFFER_OPERATION: return "Invalid framebuffer operation";
case GL_CONTEXT_LOST: return "Context lost";
}
return "Unknown";
}
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