6 static void GLAPIENTRY gldebug_logger(GLenum src, GLenum type, GLuint id, GLenum severity,
7 GLsizei len, const char *msg, const void *cls);
9 static const char *gldebug_srcstr(unsigned int src);
10 static const char *gldebug_typestr(unsigned int type);
18 if(GLEW_EXT_texture_filter_anisotropic) {
19 glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &glcaps.max_aniso);
22 glcaps.debug = GLEW_ARB_debug_output;
26 printf("Installing OpenGL debug callback\n");
27 glDebugMessageCallbackARB(gldebug_logger, 0);
45 void dump_gl_texture(unsigned int tex, const char *fname)
49 unsigned char *pixels, *pptr;
51 glBindTexture(GL_TEXTURE_2D, tex);
52 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width);
53 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height);
55 if(!(pixels = malloc(width * height * 4))) {
59 glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
61 if(!(fp = fopen(fname, "wb"))) {
65 fprintf(fp, "P6\n%d %d\n255\n", width, height);
66 for(i=0; i<width * height; i++) {
77 static void GLAPIENTRY gldebug_logger(GLenum src, GLenum type, GLuint id, GLenum severity,
78 GLsizei len, const char *msg, const void *cls)
80 static const char *fmt = "[GLDEBUG] (%s) %s: %s\n";
82 case GL_DEBUG_TYPE_ERROR:
83 fprintf(stderr, fmt, gldebug_srcstr(src), gldebug_typestr(type), msg);
86 case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
87 case GL_DEBUG_TYPE_PORTABILITY:
88 case GL_DEBUG_TYPE_PERFORMANCE:
89 printf(fmt, gldebug_srcstr(src), gldebug_typestr(type), msg);
93 printf(fmt, gldebug_srcstr(src), gldebug_typestr(type), msg);
97 static const char *gldebug_srcstr(unsigned int src)
100 case GL_DEBUG_SOURCE_API:
102 case GL_DEBUG_SOURCE_WINDOW_SYSTEM:
104 case GL_DEBUG_SOURCE_SHADER_COMPILER:
106 case GL_DEBUG_SOURCE_THIRD_PARTY:
108 case GL_DEBUG_SOURCE_APPLICATION:
110 case GL_DEBUG_SOURCE_OTHER:
118 static const char *gldebug_typestr(unsigned int type)
121 case GL_DEBUG_TYPE_ERROR:
123 case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
125 case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
126 return "undefined behavior";
127 case GL_DEBUG_TYPE_PORTABILITY:
128 return "portability warning";
129 case GL_DEBUG_TYPE_PERFORMANCE:
130 return "performance warning";
131 case GL_DEBUG_TYPE_OTHER:
140 static const char *gldebug_sevstr(unsigned int sev)
143 case GL_DEBUG_SEVERITY_HIGH:
145 case GL_DEBUG_SEVERITY_MEDIUM:
147 case GL_DEBUG_SEVERITY_LOW: