Mesa (master): configure.ac: add an enable switch for float textures (v2)

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 848f7d368d97f02eeb0c6546548784d639e3c3bf
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=848f7d368d97f02eeb0c6546548784d639e3c3bf

Author: Marek Olšák <maraeo at gmail.com>
Date:   Fri Apr  1 01:12:41 2011 +0200

configure.ac: add an enable switch for float textures (v2)

So --enable-texture-float it is.

Hardware drivers (including the Gallium ones) should
use #ifdef TEXTURE_FLOAT_ENABLED to hide any code that may
expose floating-point renderbuffers via any interface,
public or private.

v2: Print a warning when using --enable-texture-float.

---

 configure.ac |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index 5265cf6..ddd8608 100644
--- a/configure.ac
+++ b/configure.ac
@@ -319,6 +319,21 @@ else
     esac
 fi
 
+dnl
+dnl potentially-infringing-but-nobody-knows-for-sure stuff
+dnl
+AC_ARG_ENABLE([texture-float],
+    [AS_HELP_STRING([--enable-texture-float],
+        [enable floating-point textures and renderbuffers @<:@default=disabled@:>@])],
+    [enable_texture_float="$enableval"],
+    [enable_texture_float=no]
+)
+if test "x$enable_texture_float" = xyes; then
+    AC_MSG_WARN([Floating-point textures enabled.])
+    AC_MSG_WARN([Please consult docs/patents.txt with your lawyer before building Mesa.])
+    DEFINES="$DEFINES -DTEXTURE_FLOAT_ENABLED"
+fi
+
 GL_LIB_NAME='lib$(GL_LIB).'${LIB_EXTENSION}
 GLU_LIB_NAME='lib$(GLU_LIB).'${LIB_EXTENSION}
 GLUT_LIB_NAME='lib$(GLUT_LIB).'${LIB_EXTENSION}