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gl_vidsdl.c: for OpenGL versions below 1.5, assume "-novbo" (attempting to avoid old, broken VBO implementations).

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git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@1080 af15c1b1-3010-417e-b628-4374ebc0bcbd
This commit is contained in:
Eric Wasylishen 2014-10-03 18:31:58 +00:00
parent 2c177df399
commit 749ed362e7
1 changed files with 10 additions and 0 deletions
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10
Quake/gl_vidsdl.c
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@ -54,6 +54,8 @@ typedef struct {
static const char *gl_vendor; static const char *gl_vendor;
static const char *gl_renderer; static const char *gl_renderer;
static const char *gl_version; static const char *gl_version;
static int gl_version_major;
static int gl_version_minor;
static const char *gl_extensions; static const char *gl_extensions;
static char * gl_extensions_nice; static char * gl_extensions_nice;
@ -814,6 +816,8 @@ static void GL_CheckExtensions (void)
// //
if (COM_CheckParm("-novbo")) if (COM_CheckParm("-novbo"))
Con_Warning ("Vertex buffer objects disabled at command line\n"); Con_Warning ("Vertex buffer objects disabled at command line\n");
else if (gl_version_major < 1 || (gl_version_major == 1 && gl_version_minor < 5))
Con_Warning ("OpenGL version < 1.5, skipping ARB_vertex_buffer_object check\n");
else else
{ {
GL_BindBufferFunc = (PFNGLBINDBUFFERARBPROC) SDL_GL_GetProcAddress("glBindBufferARB"); GL_BindBufferFunc = (PFNGLBINDBUFFERARBPROC) SDL_GL_GetProcAddress("glBindBufferARB");
@ -1030,6 +1034,12 @@ static void GL_Init (void)
gl_version = (const char *) glGetString (GL_VERSION); gl_version = (const char *) glGetString (GL_VERSION);
gl_extensions = (const char *) glGetString (GL_EXTENSIONS); gl_extensions = (const char *) glGetString (GL_EXTENSIONS);
if (gl_version == NULL || sscanf(gl_version, "%d.%d", &gl_version_major, &gl_version_minor) < 2)
{
gl_version_major = 0;
gl_version_minor = 0;
}
if (gl_extensions_nice != NULL) if (gl_extensions_nice != NULL)
Z_Free (gl_extensions_nice); Z_Free (gl_extensions_nice);
gl_extensions_nice = GL_MakeNiceExtensionsList (gl_extensions); gl_extensions_nice = GL_MakeNiceExtensionsList (gl_extensions);