glcore: build from mesa

Makefile

@@ -50,6 +50,13 @@ install:
 linux-directfb-install:
 	cd src/mesa/drivers/directfb && $(MAKE) install
 
+# Xserver GLcore module
+glcore:
+	cd src/mesa/drivers/xorg ; $(MAKE)
+
+glcore-install:
+	cd src/mesa/drivers/xorg ; $(MAKE) install
+
 # If there's no current configuration file
 $(TOP)/configs/current:
 	@echo

configs/autoconf.in

@@ -83,6 +83,9 @@ GLW_LIB_DEPS = -L$(TOP)/$(LIB_DIR) @GLW_MESA_DEPS@ \
 	$(EXTRA_LIB_PATH) @GLW_LIB_DEPS@
 APP_LIB_DEPS = $(EXTRA_LIB_PATH) @APP_LIB_DEPS@
 
+# GLcore dependencies
+GLCORE_LIB_DEPS = $(EXTRA_LIB_PATH) @GLCORE_LIB_DEPS@
+
 # DRI dependencies
 DRI_LIB_DEPS = $(EXTRA_LIB_PATH) @DRI_LIB_DEPS@
 LIBDRM_CFLAGS = @LIBDRM_CFLAGS@

configure.ac

@@ -387,6 +387,7 @@ xlib)
         GL_LIB_DEPS="$X_LIBS -lX11 -lXext"
     fi
     GL_LIB_DEPS="$GL_LIB_DEPS $SELINUX_LIBS -lm -lpthread"
+    GLCORE_LIB_DEPS=""
 
     # if static, move the external libraries to the programs
     # and empty the libraries for libGL
@@ -418,13 +419,16 @@ dri)
 
     # need DRM libs, -lpthread, etc.
     GL_LIB_DEPS="$GL_LIB_DEPS $LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"
+    GLCORE_LIB_DEPS="-lm -lpthread $DLOPEN_LIBS"
     ;;
 osmesa)
     # No libGL for osmesa
     GL_LIB_DEPS=""
+    GLCORE_LIB_DEPS=""
     ;;
 esac
 AC_SUBST(GL_LIB_DEPS)
+AC_SUBST(GLCORE_LIB_DEPS)
 
 dnl
 dnl More X11 setup

include/GL/internal/glcore.h

@@ -181,4 +181,77 @@ typedef struct __GLcontextModesRec {
 #define GLX_TEXTURE_2D_BIT_EXT             0x00000002
 #define GLX_TEXTURE_RECTANGLE_BIT_EXT      0x00000004
 
+
+/************************************************************************/
+
+#ifdef _NEED_GL_CORE_IF
+
+/**
+ * The GLcore interface (a subset of the XMesa interface)
+ */
+#define __GL_CORE "GL_Core"
+
+typedef struct __GLcoreModuleRec {
+    /*
+     * XMesaVisual
+     */
+    XMesaVisual (*XMesaCreateVisual)( ScreenPtr display,
+                                      VisualPtr visinfo,
+                                      GLboolean rgb_flag,
+                                      GLboolean alpha_flag,
+                                      GLboolean db_flag,
+                                      GLboolean stereo_flag,
+                                      GLboolean ximage_flag,
+                                      GLint depth_size,
+                                      GLint stencil_size,
+                                      GLint accum_red_size,
+                                      GLint accum_green_size,
+                                      GLint accum_blue_size,
+                                      GLint accum_alpha_size,
+                                      GLint num_samples,
+                                      GLint level,
+                                      GLint visualCaveat );
+
+    void (*XMesaDestroyVisual)( XMesaVisual v );
+
+    /*
+     * XMesaBuffer
+     */
+    XMesaBuffer (*XMesaCreateWindowBuffer)( XMesaVisual v,
+					    WindowPtr w );
+
+    XMesaBuffer (*XMesaCreatePixmapBuffer)( XMesaVisual v,
+					    PixmapPtr p,
+					    ColormapPtr cmap );
+
+    void (*XMesaDestroyBuffer)( XMesaBuffer b );
+
+    void (*XMesaSwapBuffers)( XMesaBuffer b );
+
+    void (*XMesaResizeBuffers)( XMesaBuffer b );
+
+    /*
+     * XMesaContext
+     */
+    XMesaContext (*XMesaCreateContext)( XMesaVisual v,
+					XMesaContext share_list );
+
+    void (*XMesaDestroyContext)( XMesaContext c );
+
+    GLboolean (*XMesaCopyContext)( XMesaContext src,
+				   XMesaContext dst,
+				   GLuint mask );
+
+    GLboolean (*XMesaMakeCurrent2)( XMesaContext c,
+				    XMesaBuffer drawBuffer,
+				    XMesaBuffer readBuffer );
+
+    GLboolean (*XMesaForceCurrent)( XMesaContext c );
+
+    GLboolean (*XMesaLoseCurrent)( XMesaContext c );
+
+} __GLcoreModule;
+
+#endif /* _NEED_GL_CORE_IF */
+
 #endif /* __gl_core_h_ */

src/mesa/Makefile

@@ -103,9 +103,11 @@ OSMESA16_OBJECTS = \
 	$(OSMESA_DRIVER_OBJECTS)
 
 
-stand-alone: depend subdirs $(TOP)/$(LIB_DIR)/$(GL_LIB_NAME)
+stand-alone: depend subdirs libmesa.a \
+	$(TOP)/$(LIB_DIR)/$(GL_LIB_NAME)
 
-osmesa-only: depend subdirs $(TOP)/$(LIB_DIR)/$(OSMESA_LIB_NAME)
+osmesa-only: depend subdirs \
+	$(TOP)/$(LIB_DIR)/$(OSMESA_LIB_NAME)
 
 # Make the GL library
 $(TOP)/$(LIB_DIR)/$(GL_LIB_NAME): $(STAND_ALONE_OBJECTS)

src/mesa/drivers/x11/glxheader.h

@@ -34,6 +34,7 @@
 
 #ifdef XFree86Server
 
+# include "xorg-server.h"
 # include "resource.h"
 # include "windowstr.h"
 

src/mesa/drivers/xorg/.gitignore

@@ -0,0 +1,3 @@
+glxheader.h
+xmesaP.h
+xm_*

src/mesa/drivers/xorg/Makefile

@@ -0,0 +1,86 @@
+# src/mesa/drivers/xorg/Makefile
+
+TOP = ../../../..
+include $(TOP)/configs/current
+
+LIBNAME = libGLcore.so
+
+SYMLINKS =		\
+	glxheader.h	\
+	xmesaP.h	\
+	xm_api.c	\
+	xm_buffer.c	\
+	xm_dd.c		\
+	xm_image.c	\
+	xm_image.h	\
+	xm_line.c	\
+	xm_span.c	\
+	xm_tri.c
+
+C_SOURCES =		\
+	xm_api.c	\
+	xm_buffer.c	\
+	xm_dd.c		\
+	xm_image.c	\
+	xm_line.c	\
+	xm_span.c	\
+	xm_tri.c	\
+	glcore.c
+
+########################################
+
+MESA_MODULES = $(TOP)/src/mesa/libmesa.a
+
+C_SOURCES += ../common/driverfuncs.c
+
+OBJECTS = $(C_SOURCES:.c=.o)
+
+### Include directories
+INCLUDES = \
+	-I. \
+	-I.. \
+	-I$(TOP)/include \
+	-I$(TOP)/src/mesa \
+	-I$(TOP)/src/mesa/main \
+	-I$(TOP)/src/mesa/glapi \
+	`pkg-config --cflags xorg-server`
+
+# undef 'USE_XSHM' to make it explicit that 'XFree86Server' takes precedence
+DRIVER_DEFINES = -UUSE_XSHM -DXFree86Server
+
+##### RULES #####
+
+.c.o:
+	$(CC) -c $(INCLUDES) $(CFLAGS) $(DRIVER_DEFINES) $< -o $@
+
+
+##### TARGETS #####
+
+default: depend symlinks $(LIBNAME)
+
+
+$(LIBNAME): $(OBJECTS) $(MESA_MODULES) Makefile
+	$(TOP)/bin/mklib -noprefix -o $@ \
+		$(OBJECTS) $(MESA_MODULES) $(GLCORE_LIB_DEPS)
+
+
+depend: $(C_SOURCES) $(SYMLINKS)
+	touch depend
+	$(MKDEP) $(MKDEP_OPTIONS) $(DRIVER_DEFINES) $(INCLUDES) $(C_SOURCES) \
+		> /dev/null
+
+
+clean:
+	-rm -f *.o *.so $(SYMLINKS)
+	-rm -f depend depend.bak
+
+install: $(LIBNAME)
+	$(INSTALL) -d $(DRI_DRIVER_INSTALL_DIR)
+	$(INSTALL) -m 755 $(LIBNAME) $(DRI_DRIVER_INSTALL_DIR)
+
+$(SYMLINKS):
+	@[ -e $@ ] || ln -sf ../x11/$@ ./
+
+symlinks: $(SYMLINKS)
+
+include depend

src/mesa/drivers/xorg/glcore.c

@@ -0,0 +1,24 @@
+
+#define _NEED_GL_CORE_IF
+#include <GL/xmesa.h>
+#include <GL/internal/glcore.h>
+#include "xmesaP.h"
+
+PUBLIC
+__GLcoreModule GL_Core = {
+    XMesaCreateVisual,
+    XMesaDestroyVisual,
+
+    XMesaCreateWindowBuffer,
+    XMesaCreatePixmapBuffer,
+    XMesaDestroyBuffer,
+    XMesaSwapBuffers,
+    XMesaResizeBuffers,
+
+    XMesaCreateContext,
+    XMesaDestroyContext,
+    XMesaCopyContext,
+    XMesaMakeCurrent2,
+    XMesaForceCurrent,
+    XMesaLoseCurrent
+};

src/mesa/glapi/glapi.c

@@ -50,6 +50,10 @@
 
 
 
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
 #include "glheader.h"
 #include "glapi.h"
 #include "glapioffsets.h"

src/mesa/glapi/glthread.c

@@ -29,6 +29,10 @@
  */
 
 
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
 #include "glheader.h"
 #include "glthread.h"
 

src/mesa/main/glheader.h

@@ -46,11 +46,6 @@
 #ifndef GLHEADER_H
 #define GLHEADER_H
 
-/* This allows Mesa to be integrated into XFree86 */
-#ifdef HAVE_DIX_CONFIG_H
-#include "dix-config.h"
-#endif
-
 #include <assert.h>
 #include <ctype.h>
 #if defined(__alpha__) && defined(CCPML)