gallium: Move the dri2 state tracker since we're about to extend it to dri1.

Signed-off-by: Thomas Hellstrom <thellstrom-at-vmware-dot-com>

8 files changed, 1154 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/dri/Makefile b/src/gallium/state_trackers/dri/Makefile
new file mode 100644
index 0000000000..47750e997e
--- /dev/null
+++ b/src/gallium/state_trackers/dri/Makefile
@@ -0,0 +1,28 @@
+TOP = ../../../..
+include $(TOP)/configs/current
+
+LIBNAME = dri2drm
+
+LIBRARY_INCLUDES = \
+	-I$(TOP)/include \
+	-I$(TOP)/src/mesa \
+	-I$(TOP)/src/mesa/drivers/dri/common \
+	-I$(TOP)/src/mesa/main \
+         $(shell pkg-config --cflags-only-I libdrm)
+
+
+C_SOURCES = \
+	dri_context.c \
+	dri_screen.c \
+	dri_drawable.c \
+	dri_extensions.c
+
+#	$(TOP)/src/mesa/drivers/dri/common/utils.c \
+	$(TOP)/src/mesa/drivers/dri/common/vblank.c \
+	$(TOP)/src/mesa/drivers/dri/common/dri_util.c \
+	$(TOP)/src/mesa/drivers/dri/common/xmlconfig.c \
+	$(TOP)/src/mesa/drivers/common/driverfuncs.c \
+	$(TOP)/src/mesa/drivers/dri/common/texmem.c \
+	$(TOP)/src/mesa/drivers/dri/common/drirenderbuffer.c
+
+include ../../Makefile.template
diff --git a/src/gallium/state_trackers/dri/dri_context.c b/src/gallium/state_trackers/dri/dri_context.c
new file mode 100644
index 0000000000..92c26ac70f
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_context.c
@@ -0,0 +1,170 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#include "dri_screen.h"
+
+#include "dri_drawable.h"
+
+
+#include "state_tracker/drm_api.h"
+#include "state_tracker/st_public.h"
+#include "state_tracker/st_context.h"
+#include "pipe/p_context.h"
+
+#include "dri_context.h"
+
+#include "util/u_memory.h"
+
+
+GLboolean
+dri_create_context(const __GLcontextModes *visual,
+                   __DRIcontextPrivate *cPriv,
+                   void *sharedContextPrivate)
+{
+   __DRIscreenPrivate *sPriv = cPriv->driScreenPriv;
+   struct dri_screen *screen = dri_screen(sPriv);
+   struct dri_context *ctx = NULL;
+   struct st_context *st_share = NULL;
+
+   if (sharedContextPrivate) {
+      st_share = ((struct dri_context *) sharedContextPrivate)->st;
+   }
+
+   ctx = CALLOC_STRUCT(dri_context);
+   if (ctx == NULL)
+      goto fail;
+
+   cPriv->driverPrivate = ctx;
+   ctx->cPriv = cPriv;
+   ctx->sPriv = sPriv;
+
+   driParseConfigFiles(&ctx->optionCache,
+                       &screen->optionCache,
+                       sPriv->myNum,
+                       "dri");
+
+   ctx->pipe = drm_api_hooks.create_context(screen->pipe_screen);
+
+   if (ctx->pipe == NULL)
+      goto fail;
+
+   /* used in dri_flush_frontbuffer */
+   ctx->pipe->priv = ctx;
+
+   ctx->st = st_create_context(ctx->pipe, visual, st_share);
+   if (ctx->st == NULL)
+      goto fail;
+
+   dri_init_extensions(ctx);
+
+   return GL_TRUE;
+
+fail:
+   if (ctx && ctx->st)
+      st_destroy_context(ctx->st);
+
+   if (ctx && ctx->pipe)
+      ctx->pipe->destroy(ctx->pipe);
+
+   FREE(ctx);
+   return FALSE;
+}
+
+
+void
+dri_destroy_context(__DRIcontextPrivate *cPriv)
+{
+   struct dri_context *ctx = dri_context(cPriv);
+   struct dri_screen *screen = dri_screen(cPriv->driScreenPriv);
+
+   /* No particular reason to wait for command completion before
+    * destroying a context, but it is probably worthwhile flushing it
+    * to avoid having to add code elsewhere to cope with flushing a
+    * partially destroyed context.
+    */
+   st_flush(ctx->st, 0, NULL);
+
+   if (screen->dummyContext == ctx)
+      screen->dummyContext = NULL;
+
+   /* Also frees ctx->pipe?
+    */
+   st_destroy_context(ctx->st);
+
+   FREE(ctx);
+}
+
+
+GLboolean
+dri_unbind_context(__DRIcontextPrivate *cPriv)
+{
+   struct dri_context *ctx = dri_context(cPriv);
+   st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+   /* XXX make_current(NULL)? */
+   return GL_TRUE;
+}
+
+
+GLboolean
+dri_make_current(__DRIcontextPrivate *cPriv,
+                 __DRIdrawablePrivate *driDrawPriv,
+                 __DRIdrawablePrivate *driReadPriv)
+{
+   if (cPriv) {
+      struct dri_context *ctx = dri_context(cPriv);
+      struct dri_screen *screen = dri_screen(cPriv->driScreenPriv);
+      struct dri_drawable *draw = dri_drawable(driDrawPriv);
+      struct dri_drawable *read = dri_drawable(driReadPriv);
+
+      /* This is for situations in which we need a rendering context but
+       * there may not be any currently bound.
+       */
+      screen->dummyContext = ctx;
+
+      st_make_current(ctx->st,
+                      draw->stfb,
+                      read->stfb);
+
+      /* used in dri_flush_frontbuffer */
+      ctx->dPriv = driDrawPriv;
+
+      if (driDrawPriv)
+         dri_get_buffers(driDrawPriv);
+      if (driDrawPriv != driReadPriv && driReadPriv)
+         dri_get_buffers(driReadPriv);
+   } else {
+      st_make_current(NULL, NULL, NULL);
+   }
+
+   return GL_TRUE;
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/state_trackers/dri/dri_context.h b/src/gallium/state_trackers/dri/dri_context.h
new file mode 100644
index 0000000000..e910472700
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_context.h
@@ -0,0 +1,96 @@
+/**************************************************************************
+ *
+ * Copyright (C) 2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#ifndef DRI_CONTEXT_H
+#define DRI_CONTEXT_H
+
+#include "pipe/p_compiler.h"
+#include "drm.h"
+#include "dri_util.h"
+
+
+struct pipe_context;
+struct pipe_fence;
+struct st_context;
+struct dri_drawable;
+
+
+struct dri_context
+{
+   /* dri */
+   __DRIscreenPrivate *sPriv;
+   __DRIcontextPrivate *cPriv;
+   __DRIdrawablePrivate *dPriv;
+
+   driOptionCache optionCache;
+
+   /* gallium */
+   struct st_context *st;
+   struct pipe_context *pipe;
+};
+
+
+static INLINE struct dri_context *
+dri_context(__DRIcontextPrivate *driContextPriv)
+{
+   return (struct dri_context *) driContextPriv->driverPrivate;
+}
+
+
+/***********************************************************************
+ * dri_context.c
+ */
+void
+dri_destroy_context(__DRIcontextPrivate * driContextPriv);
+
+boolean
+dri_unbind_context(__DRIcontextPrivate * driContextPriv);
+
+boolean
+dri_make_current(__DRIcontextPrivate * driContextPriv,
+                 __DRIdrawablePrivate * driDrawPriv,
+                 __DRIdrawablePrivate * driReadPriv);
+
+boolean
+dri_create_context(const __GLcontextModes * visual,
+                   __DRIcontextPrivate * driContextPriv,
+                   void *sharedContextPrivate);
+
+
+/***********************************************************************
+ * dri_extensions.c
+ */
+void
+dri_init_extensions(struct dri_context *ctx);
+
+#endif
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/state_trackers/dri/dri_drawable.c b/src/gallium/state_trackers/dri/dri_drawable.c
new file mode 100644
index 0000000000..2e3f4099e2
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_drawable.c
@@ -0,0 +1,325 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_drawable.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_inlines.h"
+#include "state_tracker/drm_api.h"
+#include "state_tracker/st_public.h"
+#include "state_tracker/st_context.h"
+#include "state_tracker/st_cb_fbo.h"
+
+#include "util/u_memory.h"
+
+
+static void
+dri_copy_to_front(__DRIdrawablePrivate *dPriv,
+                  struct pipe_surface *from,
+                  int x, int y, unsigned w, unsigned h)
+{
+   /* TODO send a message to the Xserver to copy to the real front buffer */
+}
+
+
+static struct pipe_surface *
+dri_surface_from_handle(struct pipe_screen *screen,
+                        unsigned handle,
+                        enum pipe_format format,
+                        unsigned width,
+                        unsigned height,
+                        unsigned pitch)
+{
+   struct pipe_surface *surface = NULL;
+   struct pipe_texture *texture = NULL;
+   struct pipe_texture templat;
+   struct pipe_buffer *buf = NULL;
+
+   buf = drm_api_hooks.buffer_from_handle(screen, "dri2 buffer", handle);
+   if (!buf)
+      return NULL;
+
+   memset(&templat, 0, sizeof(templat));
+   templat.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
+   templat.target = PIPE_TEXTURE_2D;
+   templat.last_level = 0;
+   templat.depth[0] = 1;
+   templat.format = format;
+   templat.width[0] = width;
+   templat.height[0] = height;
+   pf_get_block(templat.format, &templat.block);
+
+   texture = screen->texture_blanket(screen,
+                                     &templat,
+                                     &pitch,
+                                     buf);
+
+   /* we don't need the buffer from this point on */
+   pipe_buffer_reference(&buf, NULL);
+
+   if (!texture)
+      return NULL;
+
+   surface = screen->get_tex_surface(screen, texture, 0, 0, 0,
+                                     PIPE_BUFFER_USAGE_GPU_READ |
+                                     PIPE_BUFFER_USAGE_GPU_WRITE);
+
+   /* we don't need the texture from this point on */
+   pipe_texture_reference(&texture, NULL);
+   return surface;
+}
+
+
+/**
+ * This will be called a drawable is known to have been resized.
+ */
+void
+dri_get_buffers(__DRIdrawablePrivate *dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_surface *surface = NULL;
+   struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
+   __DRIbuffer *buffers = NULL;
+   __DRIscreen *dri_screen = drawable->sPriv;
+   __DRIdrawable *dri_drawable = drawable->dPriv;
+   boolean have_depth = FALSE;
+   int i, count;
+
+   buffers = (*dri_screen->dri2.loader->getBuffers)(dri_drawable,
+                                                    &dri_drawable->w,
+                                                    &dri_drawable->h,
+                                                    drawable->attachments,
+                                                    drawable->num_attachments,
+                                                    &count,
+                                                    dri_drawable->loaderPrivate);
+
+   if (buffers == NULL) {
+      return;
+   }
+
+   /* set one cliprect to cover the whole dri_drawable */
+   dri_drawable->x = 0;
+   dri_drawable->y = 0;
+   dri_drawable->backX = 0;
+   dri_drawable->backY = 0;
+   dri_drawable->numClipRects = 1;
+   dri_drawable->pClipRects[0].x1 = 0;
+   dri_drawable->pClipRects[0].y1 = 0;
+   dri_drawable->pClipRects[0].x2 = dri_drawable->w;
+   dri_drawable->pClipRects[0].y2 = dri_drawable->h;
+   dri_drawable->numBackClipRects = 1;
+   dri_drawable->pBackClipRects[0].x1 = 0;
+   dri_drawable->pBackClipRects[0].y1 = 0;
+   dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
+   dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
+
+   for (i = 0; i < count; i++) {
+      enum pipe_format format = 0;
+      int index = 0;
+
+      switch (buffers[i].attachment) {
+         case __DRI_BUFFER_FRONT_LEFT:
+            index = ST_SURFACE_FRONT_LEFT;
+            format = PIPE_FORMAT_A8R8G8B8_UNORM;
+            break;
+         case __DRI_BUFFER_FAKE_FRONT_LEFT:
+            index = ST_SURFACE_FRONT_LEFT;
+            format = PIPE_FORMAT_A8R8G8B8_UNORM;
+            break;
+         case __DRI_BUFFER_BACK_LEFT:
+            index = ST_SURFACE_BACK_LEFT;
+            format = PIPE_FORMAT_A8R8G8B8_UNORM;
+            break;
+         case __DRI_BUFFER_DEPTH:
+            index = ST_SURFACE_DEPTH;
+            format = PIPE_FORMAT_Z24S8_UNORM;
+            break;
+         case __DRI_BUFFER_STENCIL:
+            index = ST_SURFACE_DEPTH;
+            format = PIPE_FORMAT_Z24S8_UNORM;
+            break;
+         case __DRI_BUFFER_ACCUM:
+         default:
+            assert(0);
+      }
+      assert(buffers[i].cpp == 4);
+
+      if (index == ST_SURFACE_DEPTH) {
+         if (have_depth)
+            continue;
+         else
+            have_depth = TRUE;
+      }
+
+      surface = dri_surface_from_handle(screen,
+                                        buffers[i].name,
+                                        format,
+                                        dri_drawable->w,
+                                        dri_drawable->h,
+                                        buffers[i].pitch);
+
+      st_set_framebuffer_surface(drawable->stfb, index, surface);
+      pipe_surface_reference(&surface, NULL);
+   }
+   /* this needed, or else the state tracker fails to pick the new buffers */
+   st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
+}
+
+
+void
+dri_flush_frontbuffer(struct pipe_screen *screen,
+                      struct pipe_surface *surf,
+                      void *context_private)
+{
+   struct dri_context *ctx = (struct dri_context *)context_private;
+   dri_copy_to_front(ctx->dPriv, surf, 0, 0, surf->width, surf->height);
+}
+
+
+void
+dri_swap_buffers(__DRIdrawablePrivate * dPriv)
+{
+   /* not needed for dri2 */
+   assert(0);
+}
+
+
+void
+dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
+{
+   /* not needed for dri2 */
+   assert(0);
+}
+
+
+/**
+ * This is called when we need to set up GL rendering to a new X window.
+ */
+boolean
+dri_create_buffer(__DRIscreenPrivate *sPriv,
+                  __DRIdrawablePrivate *dPriv,
+                  const __GLcontextModes *visual,
+                  boolean isPixmap)
+{
+   enum pipe_format colorFormat, depthFormat, stencilFormat;
+   struct dri_screen *screen = sPriv->private;
+   struct dri_drawable *drawable = NULL;
+   struct pipe_screen *pscreen = screen->pipe_screen;
+   int i;
+
+   if (isPixmap)
+      goto fail; /* not implemented */
+
+   drawable = CALLOC_STRUCT(dri_drawable);
+   if (drawable == NULL)
+      goto fail;
+
+   /* XXX: todo: use the pipe_screen queries to figure out which
+    * render targets are supportable.
+    */
+   assert(visual->redBits == 8);
+   assert(visual->depthBits == 24 || visual->depthBits == 0);
+   assert(visual->stencilBits == 8 || visual->stencilBits == 0);
+
+   colorFormat = PIPE_FORMAT_A8R8G8B8_UNORM;
+
+   if (visual->depthBits) {
+      if (pscreen->is_format_supported(pscreen, PIPE_FORMAT_Z24S8_UNORM,
+                                       PIPE_TEXTURE_2D,
+                                       PIPE_TEXTURE_USAGE_RENDER_TARGET |
+                                       PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0))
+         depthFormat = PIPE_FORMAT_Z24S8_UNORM;
+      else
+         depthFormat = PIPE_FORMAT_S8Z24_UNORM;
+   } else
+      depthFormat = PIPE_FORMAT_NONE;
+
+   if (visual->stencilBits) {
+      if (pscreen->is_format_supported(pscreen, PIPE_FORMAT_Z24S8_UNORM,
+                                       PIPE_TEXTURE_2D,
+                                       PIPE_TEXTURE_USAGE_RENDER_TARGET |
+                                       PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0))
+         stencilFormat = PIPE_FORMAT_Z24S8_UNORM;
+      else
+         stencilFormat = PIPE_FORMAT_S8Z24_UNORM;
+   } else
+      stencilFormat = PIPE_FORMAT_NONE;
+
+   drawable->stfb = st_create_framebuffer(visual,
+                                          colorFormat,
+                                          depthFormat,
+                                          stencilFormat,
+                                          dPriv->w,
+                                          dPriv->h,
+                                          (void*) drawable);
+   if (drawable->stfb == NULL)
+      goto fail;
+
+   drawable->sPriv = sPriv;
+   drawable->dPriv = dPriv;
+   dPriv->driverPrivate = (void *) drawable;
+
+   /* setup dri2 buffers information */
+   i = 0;
+   drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
+#if 0
+   /* TODO incase of double buffer visual, delay fake creation */
+   drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
+#endif
+   if (visual->doubleBufferMode)
+      drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
+   if (visual->depthBits)
+      drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
+   if (visual->stencilBits)
+      drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
+   drawable->num_attachments = i;
+
+   return GL_TRUE;
+fail:
+   FREE(drawable);
+   return GL_FALSE;
+}
+
+
+void
+dri_destroy_buffer(__DRIdrawablePrivate *dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+
+   st_unreference_framebuffer(drawable->stfb);
+
+   FREE(drawable);
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/state_trackers/dri/dri_drawable.h b/src/gallium/state_trackers/dri/dri_drawable.h
new file mode 100644
index 0000000000..185c657b35
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_drawable.h
@@ -0,0 +1,89 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+#ifndef DRI_DRAWABLE_H
+#define DRI_DRAWABLE_H
+
+#include "pipe/p_compiler.h"
+
+struct pipe_surface;
+struct pipe_fence;
+struct st_framebuffer;
+
+
+struct dri_drawable
+{
+   /* dri */
+   __DRIdrawablePrivate *dPriv;
+   __DRIscreenPrivate *sPriv;
+
+   unsigned attachments[8];
+   unsigned num_attachments;
+
+   /* gallium */
+   struct st_framebuffer *stfb;
+};
+
+
+static INLINE struct dri_drawable *
+dri_drawable(__DRIdrawablePrivate * driDrawPriv)
+{
+   return (struct dri_drawable *) driDrawPriv->driverPrivate;
+}
+
+
+/***********************************************************************
+ * dri_drawable.c
+ */
+boolean
+dri_create_buffer(__DRIscreenPrivate *sPriv,
+                  __DRIdrawablePrivate *dPriv,
+                  const __GLcontextModes *visual,
+                  boolean isPixmap);
+
+void
+dri_flush_frontbuffer(struct pipe_screen *screen,
+                      struct pipe_surface *surf,
+                      void *context_private);
+
+void
+dri_swap_buffers(__DRIdrawablePrivate * dPriv);
+
+void
+dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv,
+                    int x, int y,
+                    int w, int h);
+
+void
+dri_get_buffers(__DRIdrawablePrivate * dPriv);
+
+void
+dri_destroy_buffer(__DRIdrawablePrivate *dPriv);
+
+#endif
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/state_trackers/dri/dri_extensions.c b/src/gallium/state_trackers/dri/dri_extensions.c
new file mode 100644
index 0000000000..732d1e89b0
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_extensions.c
@@ -0,0 +1,119 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "state_tracker/st_context.h"
+
+#define need_GL_ARB_multisample
+#define need_GL_ARB_occlusion_query
+#define need_GL_ARB_point_parameters
+#define need_GL_ARB_texture_compression
+#define need_GL_ARB_vertex_buffer_object
+#define need_GL_ARB_vertex_program
+#define need_GL_ARB_window_pos
+#define need_GL_EXT_blend_color
+#define need_GL_EXT_blend_equation_separate
+#define need_GL_EXT_blend_func_separate
+#define need_GL_EXT_blend_minmax
+#define need_GL_EXT_cull_vertex
+#define need_GL_EXT_fog_coord
+#define need_GL_EXT_framebuffer_object
+#define need_GL_EXT_multi_draw_arrays
+#define need_GL_EXT_secondary_color
+#define need_GL_NV_vertex_program
+#include "extension_helper.h"
+
+
+/**
+ * Extension strings exported by the driver.
+ */
+const struct dri_extension card_extensions[] = {
+   {"GL_ARB_multisample", GL_ARB_multisample_functions},
+   {"GL_ARB_multitexture", NULL},
+   {"GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions},
+   {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
+   {"GL_ARB_texture_border_clamp", NULL},
+   {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
+   {"GL_ARB_texture_cube_map", NULL},
+   {"GL_ARB_texture_env_add", NULL},
+   {"GL_ARB_texture_env_combine", NULL},
+   {"GL_ARB_texture_env_dot3", NULL},
+   {"GL_ARB_texture_mirrored_repeat", NULL},
+   {"GL_ARB_texture_rectangle", NULL},
+   {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
+   {"GL_ARB_pixel_buffer_object", NULL},
+   {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
+   {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
+   {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
+   {"GL_EXT_blend_equation_separate", GL_EXT_blend_equation_separate_functions},
+   {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
+   {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
+   {"GL_EXT_blend_subtract", NULL},
+   {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
+   {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
+   {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
+   {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
+   {"GL_EXT_packed_depth_stencil", NULL},
+   {"GL_EXT_pixel_buffer_object", NULL},
+   {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
+   {"GL_EXT_stencil_wrap", NULL},
+   {"GL_EXT_texture_edge_clamp", NULL},
+   {"GL_EXT_texture_env_combine", NULL},
+   {"GL_EXT_texture_env_dot3", NULL},
+   {"GL_EXT_texture_filter_anisotropic", NULL},
+   {"GL_EXT_texture_lod_bias", NULL},
+   {"GL_3DFX_texture_compression_FXT1", NULL},
+   {"GL_APPLE_client_storage", NULL},
+   {"GL_MESA_pack_invert", NULL},
+   {"GL_MESA_ycbcr_texture", NULL},
+   {"GL_NV_blend_square", NULL},
+   {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
+   {"GL_NV_vertex_program1_1", NULL},
+   {"GL_SGIS_generate_mipmap", NULL },
+   {NULL, NULL}
+};
+
+
+void
+dri_init_extensions(struct dri_context *ctx)
+{
+   /* The card_extensions list should be pruned according to the
+    * capabilities of the pipe_screen. This is actually something
+    * that can/should be done inside st_create_context().
+    */
+   if (ctx)
+      driInitExtensions(ctx->st->ctx, card_extensions, GL_TRUE);
+   else
+      driInitExtensions(NULL, card_extensions, GL_FALSE);
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/state_trackers/dri/dri_screen.c b/src/gallium/state_trackers/dri/dri_screen.c
new file mode 100644
index 0000000000..ab33003f51
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_screen.c
@@ -0,0 +1,239 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#include "utils.h"
+#include "vblank.h"
+#include "xmlpool.h"
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_drawable.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_inlines.h"
+#include "state_tracker/drm_api.h"
+#include "state_tracker/st_public.h"
+#include "state_tracker/st_cb_fbo.h"
+
+
+PUBLIC const char __driConfigOptions[] =
+   DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
+    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
+    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
+   DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
+    /*DRI_CONF_FORCE_S3TC_ENABLE(false)*/
+    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
+   DRI_CONF_SECTION_END DRI_CONF_END;
+
+
+const uint __driNConfigOptions = 3;
+
+
+static const __DRIextension *dri_screen_extensions[] = {
+    &driReadDrawableExtension,
+    &driCopySubBufferExtension.base,
+    &driSwapControlExtension.base,
+    &driFrameTrackingExtension.base,
+    &driMediaStreamCounterExtension.base,
+    NULL
+};
+
+static const __DRIconfig **
+dri_fill_in_modes(__DRIscreenPrivate *psp,
+                  unsigned pixel_bits, unsigned depth_bits,
+                  unsigned stencil_bits, GLboolean have_back_buffer)
+{
+   __DRIconfig **configs;
+   __GLcontextModes *m;
+   unsigned num_modes;
+   uint8_t depth_bits_array[3];
+   uint8_t stencil_bits_array[3];
+   uint8_t msaa_samples_array[1];
+   unsigned depth_buffer_factor;
+   unsigned back_buffer_factor;
+   unsigned msaa_samples_factor;
+   GLenum fb_format;
+   GLenum fb_type;
+   int i;
+
+   static const GLenum back_buffer_modes[] = {
+      GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
+   };
+
+   /* TODO probe the hardware of what is supports */
+   depth_bits_array[0] = 0;
+   depth_bits_array[1] = 24;
+   depth_bits_array[2] = 24;
+
+   stencil_bits_array[0] = 0;   /* no depth or stencil */
+   stencil_bits_array[1] = 0;   /* z24x8 */
+   stencil_bits_array[2] = 8;   /* z24s8 */
+
+   msaa_samples_array[0] = 0;
+
+   depth_buffer_factor = 3;
+   back_buffer_factor = 3;
+   msaa_samples_factor = 1;
+
+   num_modes = depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
+
+   if (pixel_bits == 16) {
+      fb_format = GL_RGB;
+      fb_type = GL_UNSIGNED_SHORT_5_6_5;
+   }
+   else {
+      fb_format = GL_BGRA;
+      fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+   }
+
+   configs = driCreateConfigs(fb_format, fb_type,
+			      depth_bits_array,
+                              stencil_bits_array, depth_buffer_factor,
+                              back_buffer_modes, back_buffer_factor,
+                              msaa_samples_array, msaa_samples_factor);
+   if (configs == NULL) {
+      debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
+      return NULL;
+   }
+
+   for (i = 0; configs[i]; i++) {
+      m = &configs[i]->modes;
+      if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
+         m->visualRating = GLX_SLOW_CONFIG;
+      }
+   }
+
+   return (const const __DRIconfig **) configs;
+}
+
+
+/**
+ * Get information about previous buffer swaps.
+ */
+int
+dri_get_swap_info(__DRIdrawablePrivate * dPriv,
+                  __DRIswapInfo * sInfo)
+{
+   if (dPriv == NULL ||
+       dPriv->driverPrivate == NULL ||
+       sInfo == NULL)
+      return -1;
+   else
+      return 0;
+}
+
+
+/**
+ * NULL stub for old dri loaders
+ */
+const __DRIconfig **
+dri_init_screen(__DRIscreenPrivate *sPriv)
+{
+   return NULL;
+}
+
+
+/**
+ * This is the driver specific part of the createNewScreen entry point.
+ *
+ * Returns the __GLcontextModes supported by this driver.
+ */
+const __DRIconfig **
+dri_init_screen2(__DRIscreenPrivate *sPriv)
+{
+   struct dri_screen *screen;
+
+   /* Set up dispatch table to cope with all known extensions */
+   dri_init_extensions(NULL);
+
+   screen = CALLOC_STRUCT(dri_screen);
+   if (!screen)
+      goto fail;
+
+   screen->sPriv = sPriv;
+   screen->fd = sPriv->fd;
+   sPriv->private = (void *) screen;
+   sPriv->extensions = dri_screen_extensions;
+
+
+   screen->pipe_screen = drm_api_hooks.create_screen(screen->fd, NULL);
+   if (!screen->pipe_screen) {
+      debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
+      goto fail;
+   }
+
+   /* We need to hook in here */
+   screen->pipe_screen->flush_frontbuffer = dri_flush_frontbuffer;
+
+   driParseOptionInfo(&screen->optionCache,
+                      __driConfigOptions,
+                      __driNConfigOptions);
+
+   return dri_fill_in_modes(sPriv,
+                            4 * 8,
+                            24,
+                            8,
+                            1);
+fail:
+   return NULL;
+}
+
+
+void
+dri_destroy_screen(__DRIscreenPrivate * sPriv)
+{
+   struct dri_screen *screen = dri_screen(sPriv);
+
+   screen->pipe_screen->destroy(screen->pipe_screen);
+   FREE(screen);
+   sPriv->private = NULL;
+}
+
+
+PUBLIC const struct __DriverAPIRec driDriverAPI = {
+   .InitScreen          = dri_init_screen, /* not supported but exported */
+   .DestroyScreen       = dri_destroy_screen,
+   .CreateContext       = dri_create_context,
+   .DestroyContext      = dri_destroy_context,
+   .CreateBuffer        = dri_create_buffer,
+   .DestroyBuffer       = dri_destroy_buffer,
+   .SwapBuffers         = dri_swap_buffers, /* not supported but exported */
+   .MakeCurrent         = dri_make_current,
+   .UnbindContext       = dri_unbind_context,
+   .GetSwapInfo         = dri_get_swap_info,
+   .GetDrawableMSC      = driDrawableGetMSC32,
+   .WaitForMSC          = driWaitForMSC32,
+   .CopySubBuffer       = dri_copy_sub_buffer, /* not supported but exported */
+   .InitScreen2         = dri_init_screen2,
+};
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/state_trackers/dri/dri_screen.h b/src/gallium/state_trackers/dri/dri_screen.h
new file mode 100644
index 0000000000..3751ec6121
--- /dev/null
+++ b/src/gallium/state_trackers/dri/dri_screen.h
@@ -0,0 +1,88 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#ifndef DRI_SCREEN_H
+#define DRI_SCREEN_H
+
+#include "dri_util.h"
+#include "xmlconfig.h"
+
+#include "pipe/p_compiler.h"
+
+struct dri_screen
+{
+   /* dri */
+   __DRIscreenPrivate *sPriv;
+
+   /**
+    * Configuration cache with default values for all contexts
+    */
+   driOptionCache optionCache;
+
+   /**
+    * Temporary(?) context to use for SwapBuffers or other situations in
+    * which we need a rendering context, but none is currently bound.
+    */
+   struct dri_context *dummyContext;
+
+   /* drm */
+   int fd;
+
+   /* gallium */
+   struct pipe_winsys *pipe_winsys;
+   struct pipe_screen *pipe_screen;
+};
+
+
+/** cast wrapper */
+static INLINE struct dri_screen *
+dri_screen(__DRIscreenPrivate *sPriv)
+{
+   return (struct dri_screen *) sPriv->private;
+}
+
+
+/***********************************************************************
+ * dri_screen.c
+ */
+const __DRIconfig **
+dri_init_screen2(__DRIscreenPrivate *sPriv);
+
+void
+dri_destroy_screen(__DRIscreenPrivate * sPriv);
+
+int
+dri_get_swap_info(__DRIdrawablePrivate * dPriv,
+                  __DRIswapInfo * sInfo);
+
+#endif
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */