/*
* These are special functions for stereoscopic support
* differences in MacOS X.
*/
void
glDrawBuffer(GLenum mode)
{
GLXContext gc = glXGetCurrentContext();
if (gc && apple_glx_context_uses_stereo(gc->apple)) {
GLenum buf[2];
GLsizei n = 0;
switch (mode) {
case GL_BACK:
buf[0] = GL_BACK_LEFT;
buf[1] = GL_BACK_RIGHT;
n = 2;
break;
case GL_FRONT:
buf[0] = GL_FRONT_LEFT;
buf[1] = GL_FRONT_RIGHT;
n = 2;
break;
default:
buf[0] = mode;
n = 1;
break;
}
__gl_api.DrawBuffers(n, buf);
}
else {
__gl_api.DrawBuffer(mode);
}
}
/*
* These are special functions for stereoscopic support
* differences in MacOS X.
*/
void
__applegl_glDrawBuffer(GLenum mode)
{
struct glx_context * gc = __glXGetCurrentContext();
if (gc && apple_glx_context_uses_stereo(gc->driContext)) {
GLenum buf[2];
GLsizei n = 0;
switch (mode) {
case GL_BACK:
buf[0] = GL_BACK_LEFT;
buf[1] = GL_BACK_RIGHT;
n = 2;
break;
case GL_FRONT:
buf[0] = GL_FRONT_LEFT;
buf[1] = GL_FRONT_RIGHT;
n = 2;
break;
default:
buf[0] = mode;
n = 1;
break;
}
__ogl_framework_api->DrawBuffers(n, buf);
}
else {
__ogl_framework_api->DrawBuffer(mode);
}
}
void
glDrawBuffers(GLsizei n, const GLenum * bufs)
{
GLXContext gc = glXGetCurrentContext();
if (gc && apple_glx_context_uses_stereo(gc->apple)) {
GLenum newbuf[n + 2];
GLsizei i, outi = 0;
bool have_back = false;
bool have_front = false;
for (i = 0; i < n; ++i) {
if (GL_BACK == bufs[i]) {
have_back = true;
}
else if (GL_FRONT == bufs[i]) {
have_back = true;
}
else {
newbuf[outi++] = bufs[i];
}
}
if (have_back) {
newbuf[outi++] = GL_BACK_LEFT;
newbuf[outi++] = GL_BACK_RIGHT;
}
if (have_front) {
newbuf[outi++] = GL_FRONT_LEFT;
newbuf[outi++] = GL_FRONT_RIGHT;
}
__gl_api.DrawBuffers(outi, newbuf);
}
else {
__gl_api.DrawBuffers(n, bufs);
}
}