From a959c53b7ac91e489bf0959391e892790b9ff248 Mon Sep 17 00:00:00 2001 From: Kenneth Russel Date: Mon, 15 Jun 2009 22:57:38 +0000 Subject: Copied JOGL_2_SANDBOX r1957 on to trunk; JOGL_2_SANDBOX branch is now closed git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@1959 232f8b59-042b-4e1e-8c03-345bb8c30851 --- .../jogl/gl-impl-CustomJavaCode-embedded.java | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 make/config/jogl/gl-impl-CustomJavaCode-embedded.java (limited to 'make/config/jogl/gl-impl-CustomJavaCode-embedded.java') diff --git a/make/config/jogl/gl-impl-CustomJavaCode-embedded.java b/make/config/jogl/gl-impl-CustomJavaCode-embedded.java new file mode 100644 index 000000000..2d4cd1372 --- /dev/null +++ b/make/config/jogl/gl-impl-CustomJavaCode-embedded.java @@ -0,0 +1,37 @@ +private int[] imageSizeTemp = new int[1]; + +/** Helper for more precise computation of number of bytes that will + be touched by a pixel pack or unpack operation. */ +private int imageSizeInBytes(int bytesPerElement, + int w, int h, int d, + int dimensions, + boolean pack) { + int rowLength = w; + int alignment = 1; + + if (pack) { + glGetIntegerv(GL_PACK_ALIGNMENT, imageSizeTemp, 0); + alignment = imageSizeTemp[0]; + } else { + glGetIntegerv(GL_UNPACK_ALIGNMENT, imageSizeTemp, 0); + alignment = imageSizeTemp[0]; + } + // Try to deal somewhat correctly with potentially invalid values + rowLength = Math.max(0, rowLength); + alignment = Math.max(1, alignment); + h = Math.max(0, h); + int rowLengthInBytes = rowLength * bytesPerElement; + if (alignment > 1) { + int modulus = rowLengthInBytes % alignment; + if (modulus > 0) { + rowLengthInBytes += alignment - modulus; + } + } + + int size = 0; + if (dimensions == 1) { + return rowLengthInBytes; + } else { + return h * rowLengthInBytes; + } +} -- cgit v1.2.3