SUMMARY="Multi-platform GL implementation"
DESCRIPTION="Mesa is an open-source implementation of the OpenGL \
specification. The OpenGL specification documents a system for rendering \
interactive 3D graphics. Mesa fills the role of the Haiku OpenGL kit \
providing 3D rendering to Haiku applications."
HOMEPAGE="http://www.mesa3d.org/"
COPYRIGHT="1999-2013 Brian Paul"
LICENSE="MIT"
REVISION="1"
SOURCE_URI="ftp://ftp.freedesktop.org/pub/mesa/10.2.9/MesaLib-10.2.9.tar.bz2"
CHECKSUM_SHA256="f6031f8b7113a92325b60635c504c510490eebb2e707119bbff7bd86aa34657d"
SOURCE_DIR="Mesa-$portVersion"
PATCHES="mesa-10.2.9.patchset"

ARCHITECTURES="!x86_gcc2 x86 ?x86_64 ?arm ?ppc"
SECONDARY_ARCHITECTURES="x86"

PROVIDES="
	mesa$secondaryArchSuffix = $portVersion compat >= 10.0
	lib:libGL$secondaryArchSuffix
	"
REQUIRES="
	haiku$secondaryArchSuffix
	"

PROVIDES_devel="
	mesa${secondaryArchSuffix}_devel = $portVersion
	devel:libGL$secondaryArchSuffix = $portVersion
	"
REQUIRES_devel="
	mesa$secondaryArchSuffix == $portVersion base
	"

BUILD_REQUIRES="
	haiku${secondaryArchSuffix}_devel
	"
BUILD_PREREQUIRES="
	libxml2_python
	llvm${secondaryArchSuffix}
	cmd:bison
	cmd:find
	cmd:flex
	cmd:gcc$secondaryArchSuffix
	cmd:ld$secondaryArchSuffix
	cmd:scons
	cmd:sed
	"

BUILD()
{
	if [ -n "$secondaryArchSuffix" ]; then
		export HAIKU_SECONDARY_ARCH="$effectiveTargetArchitecture"
	fi
	scons $jobArgs build=release
	#scons $jobArgs build=debug
}

INSTALL()
{
	mesaBuildDir=build/haiku-$effectiveTargetArchitecture

	# libGL.so makes up the core of our OpenGL kit
	mkdir -p $libDir
	cp $(find $mesaBuildDir -name 'libGL.so') $libDir
	mkdir -p $developLibDir
	symlinkRelative -s $libDir/libGL.so $developLibDir

	# Our rendering add-ons
	mkdir -p $addOnsDir/opengl
	cp $(find $mesaBuildDir -name 'libswrast.so') \
		"$addOnsDir/opengl/Software Rasterizer"
	cp $(find $mesaBuildDir -name 'libswpipe.so') \
		"$addOnsDir/opengl/Software Pipe"

	# Set some nice version info
	setversion "$libDir/libGL.so" -app 10 2 9 -long "Haiku OpenGL kit"
	setversion "$addOnsDir/opengl/Software Rasterizer" -app 10 2 9 -long "Mesa software rasterization renderer"
	setversion "$addOnsDir/opengl/Software Pipe" -app 10 2 9 -long "Gallium LLVM software pipe renderer"

	# OpenGL Kit
	mkdir -p $includeDir/os/opengl
	cp ./include/HaikuGL/OpenGLKit.h $includeDir/os/
	cp ./include/HaikuGL/GLView.h $includeDir/os/opengl/
	cp ./include/HaikuGL/GLRenderer.h $includeDir/os/opengl/

	# Standard GL headers
	mkdir -p $includeDir/GL
	cp ./include/GL/gl.h $includeDir/GL/
	cp ./include/GL/gl_mangle.h $includeDir/GL/
	cp ./include/GL/glext.h $includeDir/GL/

	# Create GL symlink in opengl kit
	symlinkRelative -s $includeDir/GL $includeDir/os/opengl/GL

	# devel package
	packageEntries devel \
		$developDir

	# swpipe renderer package
	packageEntries swpipe \
		"$addOnsDir/opengl/Software Pipe"

	# swrast renderer package
	packageEntries swrast \
		"$addOnsDir/opengl/Software Rasterizer"
}

# ===== Mesa OpenGL Add-ons ==================================================
# ----- swrast package -------------------------------------------------------

SUMMARY_swrast="The Mesa software rasterization renderer"
DESCRIPTION_swrast="This 3D BGLRenderer add-on provides Mesa software \
rasterization on Haiku systems. Software rasterization performs all \
3D rendering on the systems CPU and doesn't require any specialized \
hardware. Software rasterization is generally considered a fallback \
3D rendering method as performance is limited."

PROVIDES_swrast="
	mesa${secondaryArchSuffix}_swrast = $portVersion
	"
REQUIRED_swrast="
	mesa$secondaryArchSuffix == $portVersion base
	"

# ===== Gallium OpenGL Add-ons ===============================================
# ----- swpipe package -------------------------------------------------------

SUMMARY_swpipe="The Mesa LLVM enhanced Gallium software pipe renderer"
DESCRIPTION_swpipe="This 3D BGLRenderer add-on provides Gallium LLVM \
enhanced software rendering. Software pipe rendering performs all \
3D rendering on the systems CPU and doesn't require any specialized \
hardware. The usage of LLVM over traditional rasterization gives this \
renderer a boost in performance.

Gallium software pipe rendering is in an extremely early state as of \
this version of Mesa, and may not function as expected."

PROVIDES_swpipe="
	mesa${secondaryArchSuffix}_swpipe = $portVersion
	"
REQUIRED_swpipe="
	mesa$secondaryArchSuffix == $portVersion base
	"