From: Marek Olšák <maraeo@gmail.com>
Date: Thu, 31 Mar 2011 23:12:41 +0000 (+0200)
Subject: configure.ac: add an enable switch for float textures (v2)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=848f7d368d97f02eeb0c6546548784d639e3c3bf;p=mesa.git

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.
---

diff --git a/configure.ac b/configure.ac
index 5265cf6b1ea..ddd860813bb 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}