146 lines
5.2 KiB
Plaintext
146 lines
5.2 KiB
Plaintext
//
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// CGLInfo.m
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// celestia
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//
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// Created by Bob Ippolito on Wed Jun 26 2002.
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// 2005-05 Modified substantially by Da Woon Jung
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//
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#import "CGLInfo.h"
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#import <OpenGL/OpenGL.h>
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#import <OpenGL/gl.h>
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#import <OpenGL/glext.h>
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#include <celutil/util.h>
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#ifndef GL_SHADING_LANGUAGE_VERSION_ARB
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#define GL_SHADING_LANGUAGE_VERSION_ARB 0x8B8C
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#endif
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static char *gExtensions;
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#define ENDL [result appendString:@"\n"]
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// Function taken from glext.cpp, so we don't have to compile
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// this whole file as Obj-C++
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static BOOL ExtensionSupported(const char *ext)
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{
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if (gExtensions == nil)
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return false;
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char *extensions = gExtensions;
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unsigned long len = strlen(ext);
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for (;;) {
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if (strncmp(extensions, ext, len) == 0)
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return YES;
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extensions = strchr(extensions, ' ');
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if (extensions != nil)
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++extensions;
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else
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break;
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}
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return NO;
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}
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static NSString *queryGLInteger(GLenum e, NSString *desc)
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{
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GLint r = 0;
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NSString *result;
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glGetIntegerv(e, &r);
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// if (glGetError())
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// result = [NSString stringWithFormat:NSLocalizedString(@"%@: --not available--",""), desc];
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// else
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result = [NSString stringWithFormat: NSLocalizedString(@"%@: %d",""), desc, r];
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return result;
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}
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static NSString *queryGLExtension(const char *extName)
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{
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return [NSString stringWithFormat: NSLocalizedString(@"%s: %@",""), extName, (ExtensionSupported(extName) ? NSLocalizedString(@"Supported","") : @"-")];
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}
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@implementation CGLInfo
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+(NSString *)info
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{
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NSMutableString *result = [NSMutableString string];
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gExtensions = (char *) glGetString(GL_EXTENSIONS);
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[result appendString:
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[NSString stringWithFormat:NSLocalizedString(@"Vendor: %@",""),
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[NSString stringWithUTF8String:(const char *)glGetString (GL_VENDOR)]]]; ENDL;
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[result appendString:
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[NSString stringWithFormat:NSLocalizedString(@"Renderer: %@",""), [NSString stringWithUTF8String:(const char *)glGetString (GL_RENDERER)]]]; ENDL;
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[result appendString:
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[NSString stringWithFormat:NSLocalizedString(@"Version: %@",""), [NSString stringWithUTF8String:(const char *)glGetString (GL_VERSION)]]]; ENDL;
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if (ExtensionSupported("GL_ARB_shading_language_100"))
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{
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NSString *glslVersion = [NSString stringWithUTF8String:
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(const char *)glGetString (0x8B8C)];
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if (glslVersion)
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{
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[result appendString:
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[NSString stringWithFormat:@"%s%@", _("GLSL version: "), glslVersion]
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]; ENDL;
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}
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}
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ENDL;
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[result appendString:
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(ExtensionSupported("GL_ARB_multitexture") ?
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queryGLInteger(GL_MAX_TEXTURE_UNITS_ARB, NSLocalizedString(@"Max simultaneous textures","")) :
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[NSString stringWithFormat: @"%@", [NSString stringWithFormat: @"%@: 1", NSLocalizedString(@"Max simultaneous textures","")]])]; ENDL;
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[result appendString: queryGLInteger(GL_MAX_TEXTURE_SIZE, NSLocalizedString(@"Max texture size",""))]; ENDL;
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if (ExtensionSupported("GL_ARB_texture_cube_map"))
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{
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GLint maxCubeMapSize = 0;
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glGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, &maxCubeMapSize);
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[result appendString:
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[NSString stringWithFormat:@"%s%d", _("Max cube map size: "), maxCubeMapSize]
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]; ENDL;
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}
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GLfloat pointSizeRange[2];
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glGetFloatv(GL_POINT_SIZE_RANGE, pointSizeRange);
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[result appendString:
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[NSString stringWithFormat:@"%s%f - %f", _("Point size range: "), pointSizeRange[0], pointSizeRange[1]]
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]; ENDL;
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ENDL;
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[result appendString: NSLocalizedString(@"Extensions:","")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_vertex_buffer_object")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_texture_compression")]; ENDL;
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[result appendString: queryGLExtension("GL_EXT_texture_compression_s3tc")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_texture_border_clamp")]; ENDL;
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[result appendString: queryGLExtension("GL_EXT_texture_edge_clamp")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_texture_cube_map")]; ENDL;
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[result appendString: queryGLExtension("GL_SGIS_generate_mipmap")]; ENDL;
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[result appendString: queryGLExtension("GL_EXT_rescale_normal")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_point_sprite")]; ENDL;
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ENDL;
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[result appendString: queryGLExtension("GL_ARB_vertex_program")]; ENDL;
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[result appendString: queryGLExtension("GL_NV_vertex_program")]; ENDL;
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[result appendString: queryGLExtension("GL_NV_fragment_program")]; ENDL;
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[result appendString: queryGLExtension("GL_NV_register_combiners")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_texture_env_dot3")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_texture_env_combine")]; ENDL;
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[result appendString: queryGLExtension("GL_EXT_texture_env_combine")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_shading_language_100")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_shader_objects")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_vertex_shader")]; ENDL;
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[result appendString: queryGLExtension("GL_ARB_fragment_shader")]; ENDL;
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return result;
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}
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@end
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