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better parse for opengl extensions list (from quakeforge.) 

git-svn-id: http://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@783 af15c1b1-3010-417e-b628-4374ebc0bcbd
This commit is contained in:
sezero 2012-11-07 07:51:41 +00:00
parent 0c81cf1a3f
commit 4b964ab7b1
1 changed files with 35 additions and 9 deletions
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44
Quake/gl_vidsdl.c
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@ -489,6 +489,8 @@ static char *GL_MakeNiceExtensionsList (const char *in)
char *copy, *token, *out;
int i, count;
if (!in) return NULL;
//each space will be replaced by 4 chars, so count the spaces before we malloc
for (i = 0, count = 1; i < (int) strlen(in); i++)
{
@ -530,9 +532,33 @@ static void GL_Info_f (void)
/*
===============
GL_CheckExtensions -- johnfitz
GL_CheckExtensions
===============
*/
static qboolean GL_ParseExtensionList (const char *list, const char *name)
{
const char *start;
const char *where, *terminator;
if (!list || !name || !*name)
return false;
if (strchr(name, ' ') != NULL)
return false; // extension names must not have spaces
start = list;
while (1) {
where = strstr (start, name);
if (!where)
break;
terminator = where + strlen (name);
if (where == start || where[-1] == ' ')
if (*terminator == ' ' || *terminator == '\0')
return true;
start = terminator;
}
return false;
}
static void GL_CheckExtensions (void)
{
int swap_control;
@ -542,7 +568,7 @@ static void GL_CheckExtensions (void)
//
if (COM_CheckParm("-nomtex"))
Con_Warning ("Mutitexture disabled at command line\n");
else if (strstr(gl_extensions, "GL_ARB_multitexture"))
else if (GL_ParseExtensionList(gl_extensions, "GL_ARB_multitexture"))
{
GL_MTexCoord2fFunc = (PFNGLMULTITEXCOORD2FARBPROC) SDL_GL_GetProcAddress("glMultiTexCoord2fARB");
GL_SelectTextureFunc = (PFNGLACTIVETEXTUREARBPROC) SDL_GL_GetProcAddress("glActiveTextureARB");
@ -558,7 +584,7 @@ static void GL_CheckExtensions (void)
Con_Warning ("Couldn't link to multitexture functions\n");
}
}
else if (strstr(gl_extensions, "GL_SGIS_multitexture"))
else if (GL_ParseExtensionList(gl_extensions, "GL_SGIS_multitexture"))
{
GL_MTexCoord2fFunc = (PFNGLMULTITEXCOORD2FARBPROC) SDL_GL_GetProcAddress("glMTexCoord2fSGIS");
GL_SelectTextureFunc = (PFNGLACTIVETEXTUREARBPROC) SDL_GL_GetProcAddress("glSelectTextureSGIS");
@ -584,12 +610,12 @@ static void GL_CheckExtensions (void)
//
if (COM_CheckParm("-nocombine"))
Con_Warning ("texture_env_combine disabled at command line\n");
else if (strstr(gl_extensions, "GL_ARB_texture_env_combine"))
else if (GL_ParseExtensionList(gl_extensions, "GL_ARB_texture_env_combine"))
{
Con_Printf("FOUND: ARB_texture_env_combine\n");
gl_texture_env_combine = true;
}
else if (strstr(gl_extensions, "GL_EXT_texture_env_combine"))
else if (GL_ParseExtensionList(gl_extensions, "GL_EXT_texture_env_combine"))
{
Con_Printf("FOUND: EXT_texture_env_combine\n");
gl_texture_env_combine = true;
@ -604,12 +630,12 @@ static void GL_CheckExtensions (void)
//
if (COM_CheckParm("-noadd"))
Con_Warning ("texture_env_add disabled at command line\n");
else if (strstr(gl_extensions, "GL_ARB_texture_env_add"))
else if (GL_ParseExtensionList(gl_extensions, "GL_ARB_texture_env_add"))
{
Con_Printf("FOUND: ARB_texture_env_add\n");
gl_texture_env_add = true;
}
else if (strstr(gl_extensions, "GL_EXT_texture_env_add"))
else if (GL_ParseExtensionList(gl_extensions, "GL_EXT_texture_env_add"))
{
Con_Printf("FOUND: EXT_texture_env_add\n");
gl_texture_env_add = true;
@ -622,7 +648,7 @@ static void GL_CheckExtensions (void)
//
// swap control
//
if (strstr(gl_extensions, "GL_EXT_swap_control"))
if (GL_ParseExtensionList(gl_extensions, "GL_EXT_swap_control"))
{
if (SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 0) == -1)
{
@ -654,7 +680,7 @@ static void GL_CheckExtensions (void)
//
// anisotropic filtering
//
if (strstr(gl_extensions, "GL_EXT_texture_filter_anisotropic"))
if (GL_ParseExtensionList(gl_extensions, "GL_EXT_texture_filter_anisotropic"))
{
float test1,test2;
GLuint tex;