<div dir="ltr">On Sun, Aug 14, 2016 at 11:09 AM, Ilia Mirkin <<a href="mailto:imirkin@alum.mit.edu" target="_blank">imirkin@alum.mit.edu</a>> wrote: <div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Signed-off-by: Ilia Mirkin <<a href="mailto:imirkin@alum.mit.edu">imirkin@alum.mit.edu</a>> Cc: "11.2 12.0" <<a href="mailto:mesa-stable@lists.freedesktop.org">mesa-stable@lists.freedesktop.org</a>> --- src/gallium/auxiliary/Makefile.sources | 3 +- src/gallium/auxiliary/util/u_viewport.h | 59 +++++++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+), 1 deletion(-) create mode 100644 src/gallium/auxiliary/util/u_viewport.h diff --git a/src/gallium/auxiliary/Makefile.sources b/src/gallium/auxiliary/Makefile.sources index 586f057..2a4919b 100644 --- a/src/gallium/auxiliary/Makefile.sources +++ b/src/gallium/auxiliary/Makefile.sources @@ -309,7 +309,8 @@ C_SOURCES := \ util/u_upload_mgr.h \ util/u_vbuf.c \ util/u_vbuf.h \ - util/u_video.h + util/u_video.h \ + util/u_viewport.h NIR_SOURCES := \ nir/tgsi_to_nir.c \ diff --git a/src/gallium/auxiliary/util/u_viewport.h b/src/gallium/auxiliary/util/u_viewport.h new file mode 100644 index 0000000..a731b34 --- /dev/null +++ b/src/gallium/auxiliary/util/u_viewport.h @@ -0,0 +1,59 @@ +/************************************************************************** + * + * Copyright 2016 Ilia Mirkin. + * All Rights Reserved. + * + * 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, sub license, 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 (including the + * next paragraph) 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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. + * + **************************************************************************/ + +#ifndef U_VIEWPORT_H +#define U_VIEWPORT_H + +#include "c99_compat.h" +#include "pipe/p_state.h" + +#ifdef __cplusplus +extern "C" { +#endif + +static inline void +util_viewport_zmin_zmax(const struct pipe_viewport_state *vp, bool halfz, + float *zmin, float *zmax) +{ + float a, b; + if (halfz) { + a = vp->translate[2]; + b = vp->translate[2] + vp->scale[2]; + } else { + a = vp->translate[2] - vp->scale[2]; + b = vp->translate[2] + vp->scale[2]; + } + + *zmin = a + *zmax = a </blockquote><div> </div><div>or, *zmin = MIN2(a, b); *zmax = MAX2(a, b); </div><div>-Brian </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> +} + +#ifdef __cplusplus +} +#endif + +#endif -- 2.7.3 _______________________________________________ mesa-dev mailing list <a href="mailto:mesa-dev@lists.freedesktop.org">mesa-dev@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </blockquote></div> </div></div>