From ad503c41557606d15b0420c824369456f6d20a8f Mon Sep 17 00:00:00 2001 From: Jeremy Huddleston Date: Thu, 1 Apr 2010 11:01:31 -0700 Subject: apple: Initial import of libGL for OSX from AppleSGLX svn repository. Signed-off-by: Jeremy Huddleston --- src/glx/apple/apple_xgl_api_stereo.c | 119 +++++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) create mode 100644 src/glx/apple/apple_xgl_api_stereo.c (limited to 'src/glx/apple/apple_xgl_api_stereo.c') diff --git a/src/glx/apple/apple_xgl_api_stereo.c b/src/glx/apple/apple_xgl_api_stereo.c new file mode 100644 index 0000000000..b50e3119cd --- /dev/null +++ b/src/glx/apple/apple_xgl_api_stereo.c @@ -0,0 +1,119 @@ +/* + Copyright (c) 2009 Apple Inc. + + Permission is hereby granted, free of charge, to any person + obtaining a copy of this software and associated documentation files + (the "Software"), to deal in the Software without restriction, + including without limitation the rights to use, copy, modify, merge, + publish, distribute, sublicense, and/or sell copies of the Software, + and to permit persons to whom the Software is furnished to do so, + subject to the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT + HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + DEALINGS IN THE SOFTWARE. + + Except as contained in this notice, the name(s) of the above + copyright holders shall not be used in advertising or otherwise to + promote the sale, use or other dealings in this Software without + prior written authorization. +*/ + +#include +#include "apple_xgl_api_stereo.h" +#include "apple_xgl_api.h" +#include "apple_glx_context.h" + +extern struct apple_xgl_api __gl_api; +/* + * 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); + } +} + + +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); + } +} + +void +glDrawBuffersARB(GLsizei n, const GLenum * bufs) +{ + glDrawBuffers(n, bufs); +} -- cgit v1.2.3