Start a software-only DRI driver for use in the new accelerated indirect

world.

2 files changed, 211 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/glcore/Makefile b/src/mesa/drivers/dri/glcore/Makefile
new file mode 100644
index 0000000000..744b528c35
--- /dev/null
+++ b/src/mesa/drivers/dri/glcore/Makefile
@@ -0,0 +1,83 @@
+# src/mesa/drivers/dri/glcore/Makefile
+
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = glcore_dri.so
+
+DRIVER_SOURCES = glcore_driver.c \
+		 $(TOP)/src/mesa/drivers/common/driverfuncs.c \
+		 ../common/dri_util.c
+
+C_SOURCES = \
+	$(DRIVER_SOURCES) \
+	$(DRI_SOURCES) 
+
+
+# Include directories
+INCLUDE_DIRS = \
+	-I. \
+	-I../common \
+	-I../dri_client \
+	-I../dri_client/imports \
+	-Iserver \
+	-I$(TOP)/include \
+	-I$(DRM_SOURCE_PATH)/shared-core \
+	-I$(TOP)/src/mesa \
+	-I$(TOP)/src/mesa/main \
+	-I$(TOP)/src/mesa/glapi \
+	-I$(TOP)/src/mesa/math \
+	-I$(TOP)/src/mesa/transform \
+	-I$(TOP)/src/mesa/shader \
+	-I$(TOP)/src/mesa/swrast \
+	-I$(TOP)/src/mesa/swrast_setup
+
+# Core Mesa objects
+MESA_MODULES = $(TOP)/src/mesa/libmesa.a
+
+# Libraries that the driver shared lib depends on
+LIB_DEPS = -lm -lpthread -lc
+# LIB_DEPS = -lGL -lm -lpthread -lc
+
+
+ASM_SOURCES = 
+
+OBJECTS = $(C_SOURCES:.c=.o) \
+	  $(ASM_SOURCES:.S=.o) 
+
+
+##### RULES #####
+
+.c.o:
+	$(CC) -c $(INCLUDE_DIRS) $(CFLAGS) $(DEFINES) $< -o $@
+
+.S.o:
+	$(CC) -c $(INCLUDE_DIRS) $(CFLAGS) $(DEFINES)  $< -o $@
+
+
+##### TARGETS #####
+
+default: depend $(LIB_DIR)/$(LIBNAME)
+
+
+$(LIB_DIR)/$(LIBNAME): $(OBJECTS) $(MESA_MODULES) $(WINOBJ) Makefile
+	CC="$(CC)" CXX="$(CXX)" $(TOP)/bin/mklib -o $(LIBNAME) -noprefix -install $(LIB_DIR) \
+		$(OBJECTS) $(WINLIB) $(LIB_DEPS) $(WINOBJ) $(MESA_MODULES)
+
+
+depend: $(C_SOURCES) $(ASM_SOURCES)
+	touch depend
+	$(MKDEP) $(MKDEP_OPTIONS) $(INCLUDE_DIRS) $(C_SOURCES) $(ASM_SOURCES) \
+		> /dev/null 
+
+
+# Emacs tags
+tags:
+	etags `find . -name \*.[ch]` `find ../include`
+
+
+clean:
+	-rm -f *.o server/*.o
+
+
+include depend
diff --git a/src/mesa/drivers/dri/glcore/glcore_driver.c b/src/mesa/drivers/dri/glcore/glcore_driver.c
new file mode 100644
index 0000000000..2577816041
--- /dev/null
+++ b/src/mesa/drivers/dri/glcore/glcore_driver.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2006 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * This implements a software-only "DRI" driver.  It doesn't actually speak
+ * any DRI protocol or talk to the DRM, it just looks enough like a DRI driver
+ * that libglx in the server can load it for software rendering in the
+ * unaccelerated case.
+ */
+
+static GLboolean
+glcoreInitDriver(__DRIscreenPrivate *driScreenPriv)
+{
+}
+
+static void
+glcoreDestroyScreen(__DRIScreenPrivate *driScreenPriv)
+{
+}
+
+static GLboolean
+glcoreCreateContext(const __GLcontextModes *glVisual,
+                    __DRIcontextPrivate *driContextPriv,
+                    void *shared_context)
+{
+}
+
+static void
+glcoreDestroyContext(__DRIcontextPrivate *driContextPriv)
+{
+}
+
+static GLboolean
+glcoreCreateBuffer(__DRIscreenPrivate *driScreenPriv,
+                   __DRIdrawablePrivate *driDrawablePriv,
+                   const __GLcontextModes *mesaVisual,
+                   GLboolean isPixmap)
+{
+}
+
+static void
+glcoreDestroyBuffer(__DRIdrawablePrivate *driDrawablePriv)
+{
+}
+
+static void
+glcoreSwapBuffers(__DRIdrawablePrivate *driDrawablePriv)
+{
+}
+
+static GLboolean
+glcoreMakeCurrent(__DRIcontextPrivate *driContextPriv,
+                  __DRIdrawablePrivate *driDrawablePriv,
+                  __DRIdrawablePrivate *driReadablePriv)
+{
+}
+
+static GLboolean
+glcoreUnbindContext(__DRIcontextPrivate *driContextPriv)
+{
+}
+
+static struct __DriverAPIRec glcore_api = {
+    .InitDriver     = glcoreInitDriver,
+    .DestroyScreen  = glcoreDestroyScreen,
+    .CreateContext  = glcoreCreateContext,
+    .DestroyContext = glcoreDestroyContext,
+    .CreateBuffer   = glcoreCreateBuffer,
+    .DestroyBuffer  = glcoreDestroyBuffer,
+    .SwapBuffers    = glcoreSwapBuffers,
+    .MakeCurrent    = glcoreMakeCurrent,
+    .UnbindContext  = glcoreUnbindContext,
+};  
+
+static __GLcontextModes *
+glcoreFillInModes(unsigned pixel_bits)
+{
+}
+
+PUBLIC void *
+__driCreateNewScreen_20050727(__DRInativeDisplay *dpy, int scrn,
+                              __DRIscreen *psc, const __GLcontextModes *modes,
+                              const __DRIversion *ddx_version,
+                              const __DRIversion *dri_version,
+                              const __DRIversion *drm_version,
+                              const __DRIframebuffer *fb, drmAddress pSarea,
+                              int fd, int internal_api_version,
+                              const ___DRIinterfaceMethods *interface,
+                              __GLcontextModes **driver_modes)
+{
+    __DRIscreenPrivate *driScreenPriv;
+    glcoreDriverPrivate *glcoreDriverPriv;
+    
+    /* would normally check ddx/dri/drm versions here */
+
+    driScreenPriv = __driUtilCreateNewScreen(dpy, scrn, psc, NULL, ddx_version,
+                                             dri_version, drm_version, fb,
+                                             internal_api_version, &glcore_api);
+    if (!driScreenPriv)
+        return NULL;
+
+    glcoreDriverPriv = driScreenPriv->pDrvPriv;
+
+    *driver_modes = glcoreFillInModes(glcoreDriverPriv->bpp);
+
+    driInitExtensions(NULL, NULL, GL_FALSE);
+
+    return driScreenPriv;
+}