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added check for crippled hardware

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git-svn-id: https://glew.svn.sourceforge.net/svnroot/glew/trunk/glew@409 783a27ee-832a-0410-bc00-9f386506c6dd
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ikits 2005-03-17 01:45:46 +00:00
parent 8a9cb98efb
commit 782992e803
1 changed files with 80 additions and 67 deletions
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147
auto/src/glew_init_gl.c
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@ -32,76 +32,89 @@ GLenum glewContextInit (GLEW_CONTEXT_ARG_DEF_LIST)
{ {
const GLubyte* s; const GLubyte* s;
GLuint major, minor; GLuint major, minor;
/* query opengl version */ /* check for SiS driver */
s = glGetString(GL_VERSION); s = glGetString(GL_RENDERER);
if (!s) return GLEW_ERROR_NO_GL_VERSION; if (s && _glewStrSame(s,"SiS",3))
major = _glewStrCLen(s, '.')-1;
minor = _glewStrCLen(s, '.')+1;
if (s+major == NULL
|| s+minor-1 == NULL || s+minor == NULL
|| (s[major] == 1 && s[minor] < '1'))
{ {
return GLEW_ERROR_GL_VERSION_10_ONLY; GLEW_VERSION_1_1 = GL_TRUE;
GLEW_VERSION_1_2 = GL_FALSE;
GLEW_VERSION_1_3 = GL_FALSE;
GLEW_VERSION_1_4 = GL_FALSE;
GLEW_VERSION_1_5 = GL_FALSE;
GLEW_VERSION_2_0 = GL_FALSE;
} }
else else
{ {
if (s[major] >= '2') /* query opengl version */
{ s = glGetString(GL_VERSION);
GLEW_VERSION_1_1 = GL_TRUE; if (!s) return GLEW_ERROR_NO_GL_VERSION;
GLEW_VERSION_1_2 = GL_TRUE; major = _glewStrCLen(s, '.')-1;
GLEW_VERSION_1_3 = GL_TRUE; minor = _glewStrCLen(s, '.')+1;
GLEW_VERSION_1_4 = GL_TRUE; if (s+major == NULL
GLEW_VERSION_1_5 = GL_TRUE; || s+minor-1 == NULL || s+minor == NULL
GLEW_VERSION_2_0 = GL_TRUE; || (s[major] == 1 && s[minor] < '1'))
} {
else return GLEW_ERROR_GL_VERSION_10_ONLY;
{ }
if (s[minor] >= '5') else
{ {
GLEW_VERSION_1_1 = GL_TRUE; if (s[major] >= '2')
GLEW_VERSION_1_2 = GL_TRUE; {
GLEW_VERSION_1_3 = GL_TRUE; GLEW_VERSION_1_1 = GL_TRUE;
GLEW_VERSION_1_4 = GL_TRUE; GLEW_VERSION_1_2 = GL_TRUE;
GLEW_VERSION_1_5 = GL_TRUE; GLEW_VERSION_1_3 = GL_TRUE;
GLEW_VERSION_2_0 = GL_FALSE; GLEW_VERSION_1_4 = GL_TRUE;
} GLEW_VERSION_1_5 = GL_TRUE;
if (s[minor] == '4') GLEW_VERSION_2_0 = GL_TRUE;
{ }
GLEW_VERSION_1_1 = GL_TRUE; else
GLEW_VERSION_1_2 = GL_TRUE; {
GLEW_VERSION_1_3 = GL_TRUE; if (s[minor] >= '5')
GLEW_VERSION_1_4 = GL_TRUE; {
GLEW_VERSION_1_5 = GL_FALSE; GLEW_VERSION_1_1 = GL_TRUE;
GLEW_VERSION_2_0 = GL_FALSE; GLEW_VERSION_1_2 = GL_TRUE;
} GLEW_VERSION_1_3 = GL_TRUE;
if (s[minor] == '3') GLEW_VERSION_1_4 = GL_TRUE;
{ GLEW_VERSION_1_5 = GL_TRUE;
GLEW_VERSION_1_1 = GL_TRUE; GLEW_VERSION_2_0 = GL_FALSE;
GLEW_VERSION_1_2 = GL_TRUE; }
GLEW_VERSION_1_3 = GL_TRUE; if (s[minor] == '4')
GLEW_VERSION_1_4 = GL_FALSE; {
GLEW_VERSION_1_5 = GL_FALSE; GLEW_VERSION_1_1 = GL_TRUE;
GLEW_VERSION_2_0 = GL_FALSE; GLEW_VERSION_1_2 = GL_TRUE;
} GLEW_VERSION_1_3 = GL_TRUE;
if (s[minor] == '2') GLEW_VERSION_1_4 = GL_TRUE;
{ GLEW_VERSION_1_5 = GL_FALSE;
GLEW_VERSION_1_1 = GL_TRUE; GLEW_VERSION_2_0 = GL_FALSE;
GLEW_VERSION_1_2 = GL_TRUE; }
GLEW_VERSION_1_3 = GL_FALSE; if (s[minor] == '3')
GLEW_VERSION_1_4 = GL_FALSE; {
GLEW_VERSION_1_5 = GL_FALSE; GLEW_VERSION_1_1 = GL_TRUE;
GLEW_VERSION_2_0 = GL_FALSE; GLEW_VERSION_1_2 = GL_TRUE;
} GLEW_VERSION_1_3 = GL_TRUE;
if (s[minor] < '2') GLEW_VERSION_1_4 = GL_FALSE;
{ GLEW_VERSION_1_5 = GL_FALSE;
GLEW_VERSION_1_1 = GL_TRUE; GLEW_VERSION_2_0 = GL_FALSE;
GLEW_VERSION_1_2 = GL_FALSE; }
GLEW_VERSION_1_3 = GL_FALSE; if (s[minor] == '2')
GLEW_VERSION_1_4 = GL_FALSE; {
GLEW_VERSION_1_5 = GL_FALSE; GLEW_VERSION_1_1 = GL_TRUE;
GLEW_VERSION_2_0 = GL_FALSE; GLEW_VERSION_1_2 = GL_TRUE;
} GLEW_VERSION_1_3 = GL_FALSE;
} GLEW_VERSION_1_4 = GL_FALSE;
GLEW_VERSION_1_5 = GL_FALSE;
GLEW_VERSION_2_0 = GL_FALSE;
}
if (s[minor] < '2')
{
GLEW_VERSION_1_1 = GL_TRUE;
GLEW_VERSION_1_2 = GL_FALSE;
GLEW_VERSION_1_3 = GL_FALSE;
GLEW_VERSION_1_4 = GL_FALSE;
GLEW_VERSION_1_5 = GL_FALSE;
GLEW_VERSION_2_0 = GL_FALSE;
}
}
}
} }
/* initialize extensions */ /* initialize extensions */