diff --git a/src/animation.c b/src/animation.c
index aafc90e..fd9838b 100644
--- a/src/animation.c
+++ b/src/animation.c
@@ -261,8 +261,8 @@ int imageFromGLTexture(unsigned int texid, int *outWidth, int *outHeight, unsign
 	unsigned int prevtex = 0;
 	glGetIntegerv(GL_TEXTURE_BINDING_2D, (int*)&prevtex);
 	glBindTexture(GL_TEXTURE_2D, texid);
-	glGetTextureLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
-	glGetTextureLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &h);
+	glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
+	glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &h);
 	if (w > 0 && h > 0) {
 		*outWidth = w;
 		*outHeight = h;
diff --git a/win/build-program-win.sh b/win/build-program-win.sh
new file mode 100755
index 0000000..00e624f
--- /dev/null
+++ b/win/build-program-win.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+
+set -e
+
+TARGETPATH="$(pwd)"
+PROGNAME="$1"
+ARGS=()
+for file in ${@:2}; do
+	FILEPATH="$(realpath $file)"
+    ARGS+=("$FILEPATH")
+	echo "add file: $FILEPATH"
+done
+
+
+if [ -z "$PROGNAME" ] || [ -z "$ARGS" ]; then
+	echo "Usage: $0 program_name file1.c file2.c ..."
+	exit 1
+fi
+
+ROOT="$(cd `dirname "$0"`; pwd)"
+cd "$ROOT"
+
+source function.sh
+source toolchain.sh
+
+
+OPTIONS="-O3 -DNDEBUG"
+#OPTIONS="-g -O0"
+
+packages=""
+newpackages="program"
+
+#######################################################################
+
+
+function build_program() {
+	echocall $CC \
+		"${ARGS[@]}" \
+		-Wall $OPTIONS \
+		-I"$ROOT/release/include/helianthus" \
+		"$ROOT/release/lib$bits/libhelianthus.a" \
+		-lmingw32 -mconsole \
+		-lm -static-libgcc \
+		-lopengl32 -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lshlwapi \
+		-lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid \
+		-o "$TARGETPATH/$PROGNAME$bits.exe"
+}
+
+
+#######################################################################
+
+
+rm -f build*/program.done
+build 32 i686-w64-mingw32
+build 64 x86_64-w64-mingw32
+rm -f build*/program.done
+
+print_section done