# Linux makefile for Glide3/H3 and Texus2
#
#  Copyright (c) 2003 - Daniel Borca
#  Email : dborca@users.sourceforge.net
#  Web   : http://www.geocities.com/dborca
#

#
#  Available options:
#
#    Environment variables:
#	FX_GLIDE_HW	build for the given ASIC (h3).
#			default = h3
#	DRI=1		Build DRI version.
#			default = no
#	DGA=1		Build DGA version (experimental).
#			default = no
#	XPATH		specify X libraries path; needed by DRI and DGA.
#			default = /usr/X11R6/lib
#	H4=1		High speed Avenger.
#			default = no
#	OPTFLAGS	pass given optimization flags to compiler
#			default = -O2 -ffast-math
#	DEBUG=1		enable debugging checks and messages
#			default = no
#	USE_X86=1	use assembler triangle specializations!
#			default = no
#	USE_3DNOW=1	allow 3DNow! specializations. However, the true CPU
#			capabilities are still checked at run-time to avoid
#			crashes.
#			default = no
#	TEXUS2=1	embed Texus2 functions into Glide3.
#			default = no
#
#    Targets:
#	all:		build everything
#	glide3x:	build Glide3x lib
#	clean:		remove object files
#	realclean:	remove all generated files
#


.PHONY: all glide3x clean realclean
.INTERMEDIATE: fxgasm
.SUFFIXES: .lo

export PATH := $(PATH):.

###############################################################################
#	general defines (user settable?)
###############################################################################

GLIDE_VERSION_MAJOR = 3
GLIDE_VERSION_MINOR = 10.0

GLIDE_LIB = libglide3.a
GLIDE_SO  = libglide3.so
TEXUS_EXE = texus2

GLIDE_SONAME = $(GLIDE_SO).$(GLIDE_VERSION_MAJOR)
GLIDE_SHARED = $(GLIDE_SONAME).$(GLIDE_VERSION_MINOR)

FX_GLIDE_HW ?= h3
FX_GLIDE_SW = ../../../swlibs
GLIDE_LIBDIR = ../../lib
TEXUS_EXEDIR = $(FX_GLIDE_SW)/bin

###############################################################################
#	tools
###############################################################################

CC = gcc
AS = nasm
AR = ar

CP = cp

###############################################################################
#	defines
###############################################################################

# platform
CDEFS = -D__linux__
XPATH ?= /usr/X11R6/lib
ifeq ($(DRI),1)
CDEFS += -DDRI_BUILD
LDFLAGS = -L$(XPATH)
LDLIBS = -lX11
endif
ifeq ($(DGA),1)
CDEFS += -DUSE_XDGA_SWITCH=1
LDFLAGS = -L$(XPATH)
LDLIBS = -lX11 -lXext -lXxf86dga
endif

# general
CDEFS += -DGLIDE3 -DGLIDE3_ALPHA -DGLIDE_HW_TRI_SETUP=1 -DGLIDE_INIT_HWC -DGLIDE_PACKED_RGB=0 -DGLIDE_PACKET3_TRI_SETUP=1 -DGLIDE_TRI_CULLING=1 -DUSE_PACKET_FIFO=1
#CDEFS += -DGLIDE_CHECK_CONTEXT
LDLIBS += -lm

# subsystem
CDEFS += -DH3
ifdef H4
CDEFS += -DH4
endif

# debug
ifdef DEBUG
CDEFS += -DGDBG_INFO_ON -DGLIDE_DEBUG -DGLIDE_SANITY_ASSERT -DGLIDE_SANITY_SIZE
endif

# other
CDEFS += -DGLIDE_PLUG -DGLIDE_SPLASH

ifeq ($(TEXUS2),1)
CDEFS += -DHAVE_TEXUS2
endif

###############################################################################
#	flags
###############################################################################

# librarian
ARFLAGS = rus

# assembler
ASFLAGS = -O6 -felf -D__linux__
ASFLAGS += $(CDEFS)

# compiler
CFLAGS = -Wall -W
CFLAGS += -I. -I../../incsrc -I../../minihwc -I../../cinit
CFLAGS += -I$(FX_GLIDE_SW)/fxmisc -I$(FX_GLIDE_SW)/newpci/pcilib -I$(FX_GLIDE_SW)/fxmemmap
CFLAGS += -I$(FX_GLIDE_SW)/texus2/lib
CFLAGS += $(CDEFS)

ifeq ($(USE_3DNOW),1)
CFLAGS += -DGL_AMD3D
override USE_X86 = 1
endif

ifeq ($(USE_X86),1)
CFLAGS += -DGL_X86
OPTFLAGS ?= -O2 -ffast-math
else
CFLAGS += -DGLIDE_USE_C_TRISETUP
OPTFLAGS ?= -O2 -ffast-math
endif

# optflags
CFLAGS += $(OPTFLAGS)

###############################################################################
#	objects
###############################################################################

GLIDE_OBJECTS = \
	fifo.o \
	distate.o \
	gstrip.o \
	distrip.o \
	diget.o \
	gsplash.o \
	g3df.o \
	gu.o \
	gpci.o \
	diglide.o \
	disst.o \
	ditex.o \
	gbanner.o \
	gerror.o \
	gaa.o \
	gdraw.o \
	gglide.o \
	glfb.o \
	gsst.o \
	gtex.o \
	gtexdl.o \
	xtexdl_def.o

ifeq ($(USE_X86),1)
GLIDE_OBJECTS += \
	cpuid.o \
	xdraw2_def.o \
	xdraw3_def.o
ifeq ($(USE_3DNOW),1)
GLIDE_OBJECTS += \
	xdraw2_3dnow.o \
	xdraw3_3dnow.o \
	xtexdl_3dnow.o
endif
else
GLIDE_OBJECTS += \
	gxdraw.o
endif

GLIDE_OBJECTS += \
	gthread.o \
	$(FX_GLIDE_SW)/newpci/pcilib/fxpci.o \
	$(FX_GLIDE_SW)/newpci/pcilib/fxlinux.o \
	../../minihwc/hwcio.o \
	../../minihwc/gdebug.o

# FIXME: needed for now to match the old library signature, should be checked
#        if it's really needed.
GLIDE_OBJECTS += \
	$(FX_GLIDE_SW)/fxmisc/fxos.o \
	$(FX_GLIDE_SW)/fxmisc/fximg.o

ifeq ($(DRI),1)
GLIDE_OBJECTS += \
	../../minihwc/linhwc.o \
	$(FX_GLIDE_SW)/fxmisc/linutil.o
else
GLIDE_OBJECTS += \
	../../minihwc/minihwc.o \
	../../minihwc/lin_mode.o \
	../../cinit/h3cinit.o
endif

TEXUS_SOURCES = \
	$(FX_GLIDE_SW)/texus2/lib/texuslib.c \
	$(FX_GLIDE_SW)/texus2/lib/clamp.c \
	$(FX_GLIDE_SW)/texus2/lib/read.c \
	$(FX_GLIDE_SW)/texus2/lib/resample.c \
	$(FX_GLIDE_SW)/texus2/lib/mipmap.c \
	$(FX_GLIDE_SW)/texus2/lib/quantize.c \
	$(FX_GLIDE_SW)/texus2/lib/ncc.c \
	$(FX_GLIDE_SW)/texus2/lib/nccnnet.c \
	$(FX_GLIDE_SW)/texus2/lib/pal256.c \
	$(FX_GLIDE_SW)/texus2/lib/pal6666.c \
	$(FX_GLIDE_SW)/texus2/lib/dequant.c \
	$(FX_GLIDE_SW)/texus2/lib/view.c \
	$(FX_GLIDE_SW)/texus2/lib/util.c \
	$(FX_GLIDE_SW)/texus2/lib/diffuse.c \
	$(FX_GLIDE_SW)/texus2/lib/write.c \
	$(FX_GLIDE_SW)/texus2/lib/tga.c \
	$(FX_GLIDE_SW)/texus2/lib/3df.c \
	$(FX_GLIDE_SW)/texus2/lib/ppm.c \
	$(FX_GLIDE_SW)/texus2/lib/rgt.c \
	$(FX_GLIDE_SW)/texus2/lib/txs.c \
	$(FX_GLIDE_SW)/texus2/lib/codec.c \
	$(FX_GLIDE_SW)/texus2/lib/eigen.c \
	$(FX_GLIDE_SW)/texus2/lib/bitcoder.c

ifeq ($(TEXUS2),1)
GLIDE_OBJECTS += $(TEXUS_SOURCES:.c=.o)
endif

###############################################################################
#	rules
###############################################################################

.c.o:
	$(CC) -o $@ $(CFLAGS) -c $<
.c.lo:
	$(CC) -o $@ $(CFLAGS) -DPIC -fPIC -c $<
.S.o:
	$(CC) -o $@ $(CFLAGS) -c $<
.s.o:
	$(CC) -o $@ $(CFLAGS) -x assembler-with-cpp -c $<

###############################################################################
#	main
###############################################################################
all: glide3x $(TEXUS_EXEDIR)/$(TEXUS_EXE)

glide3x: $(GLIDE_LIBDIR)/$(GLIDE_LIB) $(GLIDE_LIBDIR)/$(GLIDE_SO)

$(GLIDE_LIBDIR)/$(GLIDE_LIB): $(GLIDE_OBJECTS)
	$(AR) $(ARFLAGS) $@ $^

$(GLIDE_LIBDIR)/$(GLIDE_SO): $(GLIDE_LIBDIR)/$(GLIDE_SHARED)
	ln -fs $(GLIDE_SHARED) $(GLIDE_LIBDIR)/$(GLIDE_SO)

$(GLIDE_LIBDIR)/$(GLIDE_SHARED): $(GLIDE_OBJECTS:.o=.lo)
	$(CC) -o $@ -shared -Wl,-soname,$(GLIDE_SONAME) $^ $(LDFLAGS) $(LDLIBS)

$(TEXUS_EXEDIR)/$(TEXUS_EXE): $(FX_GLIDE_SW)/texus2/cmd/cmd.c $(GLIDE_LIBDIR)/$(GLIDE_LIB)
ifeq ($(TEXUS2),1)
	$(CC) -o $@ -s $(CFLAGS) -L$(GLIDE_LIBDIR) $< -lglide3 -lm
else
	$(warning Texus2 not enabled... Skipping $(TEXUS_EXE))
endif

###############################################################################
#	rules(2)
###############################################################################

cpuid.o: cpudtect.asm
	$(AS) -o $@ $(ASFLAGS) $<
xdraw2_def.o: xdraw2.asm
	$(AS) -o $@ $(ASFLAGS) $<
xdraw3_def.o: xdraw3.asm
	$(AS) -o $@ $(ASFLAGS) $<
xdraw2_3dnow.o: xdraw2.asm
	$(AS) -o $@ $(ASFLAGS) -DGL_AMD3D=1 $<
xdraw3_3dnow.o: xdraw3.asm
	$(AS) -o $@ $(ASFLAGS) -DGL_AMD3D=1 $<
xtexdl_3dnow.o: xtexdl.asm
	$(AS) -o $@ $(ASFLAGS) -DGL_AMD3D=1 $<

cpuid.lo: cpuid.o
	$(CP) $< $@
xdraw2_def.lo: xdraw2_def.o
	$(CP) $< $@
xdraw3_def.lo: xdraw3_def.o
	$(CP) $< $@
xdraw2_3dnow.lo: xdraw2_3dnow.o
	$(CP) $< $@
xdraw3_3dnow.lo: xdraw3_3dnow.o
	$(CP) $< $@
xtexdl_3dnow.lo: xtexdl_3dnow.o
	$(CP) $< $@

$(GLIDE_OBJECTS): fxinline.h fxgasm.h

fxinline.h: fxgasm
	$< -inline > $@

fxgasm.h: fxgasm
	$< -hex > $@

fxgasm: fxgasm.c
	$(CC) -o $@ $(CFLAGS) $<

###############################################################################
#	clean, realclean
###############################################################################

clean:
	-$(RM) *.o *.lo
	-$(RM) ../../cinit/*.o ../../cinit/*.lo
	-$(RM) ../../minihwc/*.o ../../minihwc/*.lo
	-$(RM) $(FX_GLIDE_SW)/newpci/pcilib/*.o $(FX_GLIDE_SW)/newpci/pcilib/*.lo
	-$(RM) $(FX_GLIDE_SW)/fxmisc/*.o $(FX_GLIDE_SW)/fxmisc/*.lo
	-$(RM) fxinline.h
	-$(RM) fxgasm.h
	-$(RM) $(FX_GLIDE_SW)/texus2/lib/*.o $(FX_GLIDE_SW)/texus2/lib/*.lo

realclean: clean
	-$(RM) $(GLIDE_LIBDIR)/$(GLIDE_LIB)
	-$(RM) $(GLIDE_LIBDIR)/$(GLIDE_SHARED)
	-$(RM) $(GLIDE_LIBDIR)/$(GLIDE_SO)
	-$(RM) $(TEXUS_EXEDIR)/$(TEXUS_EXE)
