90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/* KallistiGL for KallistiOS ##version##
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libgl/gl-error.c
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Copyright (C) 2014 Josh Pearson
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Copyright (C) 2016 Lawrence Sebald
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* Copyright (C) 2017 Luke Benstead
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KOS Open GL State Machine Error Code Implementation.
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*/
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#include "gl.h"
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#include <stdio.h>
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static GLenum last_error = GL_NO_ERROR;
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static char error_function[64] = { '\0' };
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/* Quoth the GL Spec:
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When an error occurs, the error flag is set to the appropriate error code
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value. No other errors are recorded until glGetError is called, the error
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code is returned, and the flag is reset to GL_NO_ERROR.
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So, we only record an error here if the error code is currently unset.
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Nothing in the spec requires recording multiple error flags, although it is
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allowed by the spec. We take the easy way out for now. */
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void _glKosThrowError(GLenum error, const char *function) {
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if(last_error == GL_NO_ERROR) {
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last_error = error;
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sprintf(error_function, "%s\n", function);
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}
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}
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GLubyte _glKosHasError() {
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return (last_error != GL_NO_ERROR) ? GL_TRUE : GL_FALSE;
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}
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static void _glKosResetError() {
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last_error = GL_NO_ERROR;
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sprintf(error_function, "\n");
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}
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static const char* _glErrorEnumAsString(GLenum error) {
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switch(error) {
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case GL_INVALID_ENUM: return "GL_INVALID_ENUM";
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case GL_OUT_OF_MEMORY: return "GL_OUT_OF_MEMORY";
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case GL_INVALID_OPERATION: return "GL_INVALID_OPERATION";
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case GL_INVALID_VALUE: return "GL_INVALID_VALUE";
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default:
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return "GL_UNKNOWN_ERROR";
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}
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}
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void _glKosPrintError() {
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if(!_glKosHasError()) {
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return;
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}
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fprintf(stderr, "GL ERROR: %s when calling %s\n", _glErrorEnumAsString(last_error), error_function);
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_glKosResetError();
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}
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GLenum glGetError(void) {
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GLenum rv = last_error;
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_glKosResetError();
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return rv;
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}
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const GLubyte *gluErrorString(GLenum error) {
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switch(error) {
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case GL_NO_ERROR:
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return (GLubyte *)"no error";
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case GL_INVALID_ENUM:
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return (GLubyte *)"invalid enumerant";
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case GL_INVALID_OPERATION:
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return (GLubyte *)"invalid operation";
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case GL_INVALID_VALUE:
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return (GLubyte *)"invalid value";
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case GL_OUT_OF_MEMORY:
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return (GLubyte *)"out of memory";
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default:
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return (GLubyte *)"unknown error";
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}
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}
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