mirror of
https://github.com/mauiaaron/apple2.git
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227098ec52
- Import NTSC video display modes
- Migrate to using full-color framebuffers
- Mac and Android builds somewhat working
- TODO : likely breaks display testing
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/*
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* Apple // emulator for *ix
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*
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* This software package is subject to the GNU General Public License
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* version 3 or later (your choice) as published by the Free Software
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* Foundation.
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*
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* Copyright 2013-2015 Aaron Culliney
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*
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*/
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// Modified sample code from https://developer.apple.com/library/mac/samplecode/GLEssentials/Introduction/Intro.html
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#ifndef __GL_UTIL_H__
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#define __GL_UTIL_H__
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#define UNINITIALIZED_GL (-31337) // HACK FIXME TODO : is there an official OpenGL value we can use to signify an uninitialized state? (cannot depend on zero)
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#if (TARGET_OS_MAC || TARGET_OS_PHONE)
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# define USE_VAO 1
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# import <CoreFoundation/CoreFoundation.h>
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# import <TargetConditionals.h>
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# if TARGET_OS_IPHONE
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# import <OpenGLES/ES3/gl.h>
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# import <OpenGLES/ES3/glext.h>
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# else
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# import <OpenGL/OpenGL.h>
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# import <OpenGL/gl3.h>
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# endif
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#elif defined(USE_GL3W)
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# include <GL3/gl3.h>
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# include <GL3/gl3w.h>
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#elif defined(ANDROID)
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// NOTE : 2015/04/01 ... Certain Android and Android-ish devices (*cough* Kindle *cough*) have buggy OpenGL VAO support,
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// so don't rely on it. Is it the future yet?
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# define USE_VAO 0
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# include <GLES2/gl2.h>
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# include <GLES2/gl2ext.h>
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#else
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# define GLEW_STATIC
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# include <GL/glew.h>
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# define FREEGLUT_STATIC
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# include <GL/freeglut.h>
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#endif
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// Global unified texture format constants ...
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#define TEX_FORMAT GL_RGBA
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#if USE_RGBA4444
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# define TEX_FORMAT_INTERNAL GL_RGBA4
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# define TEX_TYPE GL_UNSIGNED_SHORT_4_4_4_4
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#else
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// assuming RGBA8888 ...
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# define TEX_FORMAT_INTERNAL TEX_FORMAT
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# define TEX_TYPE GL_UNSIGNED_BYTE
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#endif
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static inline const char * GetGLErrorString(GLenum error) {
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const char *str;
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switch (error) {
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case GL_NO_ERROR:
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str = "GL_NO_ERROR";
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break;
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case GL_INVALID_ENUM:
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str = "GL_INVALID_ENUM";
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break;
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case GL_INVALID_VALUE:
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str = "GL_INVALID_VALUE";
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break;
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case GL_INVALID_OPERATION:
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str = "GL_INVALID_OPERATION";
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break;
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#if defined __gl_h_ || defined __gl3_h_
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case GL_OUT_OF_MEMORY:
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str = "GL_OUT_OF_MEMORY";
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break;
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case GL_INVALID_FRAMEBUFFER_OPERATION:
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str = "GL_INVALID_FRAMEBUFFER_OPERATION";
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break;
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#endif
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#if defined __gl_h_
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case GL_STACK_OVERFLOW:
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str = "GL_STACK_OVERFLOW";
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break;
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case GL_STACK_UNDERFLOW:
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str = "GL_STACK_UNDERFLOW";
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break;
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case GL_TABLE_TOO_LARGE:
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str = "GL_TABLE_TOO_LARGE";
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break;
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#endif
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default:
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str = "(ERROR: Unknown Error Enum)";
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break;
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}
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return str;
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}
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#endif // __GL_UTIL_H__
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