ripple/util.cpp
2017-11-26 00:47:29 -05:00

141 lines
2.9 KiB
C++

/* See LICENSE file for copyright and license details. */
#include <GL/glew.h>
#include <SDL2/SDL.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "util.h"
void *
ecalloc(size_t nmemb, size_t size)
{
void *p;
if (!(p = calloc(nmemb, size)))
die("calloc:");
return p;
}
void
die(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
fputc(' ', stderr);
perror(NULL);
} else {
fputc('\n', stderr);
}
exit(1);
}
void
infogl(const int verbose)
{
#define PBYTE(CHAINE) ( (CHAINE) != NULL ? (CHAINE) : (const GLubyte *) "????" )
#define PCHAR(CHAINE) ( (CHAINE) != NULL ? (CHAINE) : (const char *) "????" )
SDL_version linked;
SDL_GetVersion( &linked );
printf("// SDL %u.%u.%u\n", linked.major, linked.minor, linked.patch);
printf("// OpenGL %s%s\n", PBYTE(glGetString(GL_VERSION)), PBYTE(glGetString(GL_VENDOR)));
printf("// GPU %s\n", PBYTE(glGetString(GL_RENDERER)));
printf("// GLSL %s\n", PBYTE(glGetString(GL_SHADING_LANGUAGE_VERSION)));
if (verbose)
printf("// extensions = %s\n", PBYTE(glGetString(GL_EXTENSIONS)));
#undef PBYTE
#undef PCHAR
}
void
sdldie(const char *msg)
{
fprintf(stderr, "sdldie: %s: %s\n",msg, SDL_GetError());
SDL_Quit();
exit(1);
}
void
sdlerrcheck(int line)
{
const char *sdlerror = SDL_GetError();
if ( *sdlerror != '\0' )
{
fprintf(stderr,"SDL Error: l.%d: %s\n",line, sdlerror);
SDL_ClearError();
}
}
int
checkglerr(const char *msg, const int line)
{
const char *errors[7] = {
"GL_INVALID_ENUM",
"GL_INVALID_VALUE",
"GL_INVALID_OPERATION",
"GL_STACK_OVERFLOW",
"GL_STACK_UNDERFLOW",
"GL_OUT_OF_MEMORY",
"GL_INVALID_FRAMEBUFFER_OPERATION",
};
int rc = 0;
GLenum err;
while ((err = glGetError()) != GL_NO_ERROR)
{
if (err >= GL_INVALID_ENUM && err <= GL_INVALID_FRAMEBUFFER_OPERATION)
fprintf(stderr, "%s l.%d\n", errors[err - GL_INVALID_ENUM], line);
else
fprintf(stderr, "Unknown error l.%d\n", line);
++rc;
}
return rc;
}
void
printcomplog(GLuint shaderobj)
{
int logl;
char *log;
glGetShaderiv(shaderobj, GL_INFO_LOG_LENGTH, &logl);
if (logl > 0) {
log = (char*)malloc(sizeof(char) * logl);
if (!log)
die("Cannot allocate %d bytes for shader log\n", logl);
glGetShaderInfoLog(shaderobj, logl, NULL, log);
fprintf(stderr, "\n%s\n", log);
free(log);
}
}
void
printprogramlog(GLuint prog)
{
int logl;
char *log;
glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &logl);
if (logl > 0) {
log = (char*)malloc(sizeof(char) * logl);
if (!log)
die("Cannot allocate %d bytes for program log\n", logl);
glGetProgramInfoLog(prog, logl, NULL, log);
fprintf(stderr, "\n%s\n", log);
free(log);
}
}
void
debugcallback(GLenum source, GLenum type, GLuint id,
GLenum severity, GLsizei length, const GLchar* message, const void* userParam)
{
printf("%s\n", message);
}