util: Move DRI parse_debug_string() to util
[mesa.git] / src / mesa / drivers / dri / i915 / intel_context.c
index 07bee4ef9f93f6bcb2dec60c1b88b22307378f82..3f429f25d105cb43b7c883ee4a1cb03479228fab 100644 (file)
@@ -1,6 +1,6 @@
 /**************************************************************************
  * 
- * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2003 VMware, Inc.
  * All Rights Reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -18,7 +18,7 @@
  * 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 TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * 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.
  **************************************************************************/
 
 
-#include "glheader.h"
-#include "context.h"
-#include "matrix.h"
-#include "simple_list.h"
-#include "extensions.h"
-#include "framebuffer.h"
-#include "imports.h"
-#include "points.h"
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/extensions.h"
+#include "main/fbobject.h"
+#include "main/framebuffer.h"
+#include "main/imports.h"
+#include "main/points.h"
+#include "main/renderbuffer.h"
 
 #include "swrast/swrast.h"
 #include "swrast_setup/swrast_setup.h"
 #include "tnl/tnl.h"
-#include "vbo/vbo.h"
-
-#include "tnl/t_pipeline.h"
-#include "tnl/t_vertex.h"
-
 #include "drivers/common/driverfuncs.h"
+#include "drivers/common/meta.h"
 
-#include "intel_screen.h"
-
-#include "i830_dri.h"
-#include "i830_common.h"
-
+#include "intel_chipset.h"
+#include "intel_buffers.h"
 #include "intel_tex.h"
-#include "intel_span.h"
-#include "intel_tris.h"
-#include "intel_ioctl.h"
 #include "intel_batchbuffer.h"
+#include "intel_clear.h"
+#include "intel_extensions.h"
+#include "intel_pixel.h"
+#include "intel_regions.h"
+#include "intel_buffer_objects.h"
+#include "intel_fbo.h"
+#include "intel_bufmgr.h"
+#include "intel_screen.h"
+#include "intel_mipmap_tree.h"
 
-#include "vblank.h"
 #include "utils.h"
-#include "xmlpool.h" /* for symbolic values of enum-type options */
-#ifndef INTEL_DEBUG
+#include "util/debug.h"
+#include "util/ralloc.h"
+
 int INTEL_DEBUG = (0);
-#endif
-
-#define need_GL_ARB_multisample
-#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_multi_draw_arrays
-#define need_GL_EXT_secondary_color
-#define need_GL_NV_vertex_program
-#include "extension_helper.h"
-
-#ifndef VERBOSE
-int VERBOSE = 0;
-#endif
-
-#if DEBUG_LOCKING
-char *prevLockFile;
-int prevLockLine;
-#endif
-
-/***************************************
- * Mesa's Driver Functions
- ***************************************/
-
-#define DRIVER_DATE "20061017"
-
-const GLubyte *intelGetString( GLcontext *ctx, GLenum name )
+
+const char *const i915_vendor_string = "Intel Open Source Technology Center";
+
+const char *
+i915_get_renderer_string(unsigned deviceID)
 {
-   const char * chipset;
+   const char *chipset;
    static char buffer[128];
 
+   switch (deviceID) {
+#undef CHIPSET
+#define CHIPSET(id, symbol, str) case id: chipset = str; break;
+#include "pci_ids/i915_pci_ids.h"
+   default:
+      chipset = "Unknown Intel Chipset";
+      break;
+   }
+
+   (void) driGetRendererString(buffer, chipset, 0);
+   return buffer;
+}
+
+static const GLubyte *
+intelGetString(struct gl_context * ctx, GLenum name)
+{
+   const struct intel_context *const intel = intel_context(ctx);
+
    switch (name) {
    case GL_VENDOR:
-      return (GLubyte *)"Tungsten Graphics, Inc";
-      break;
-      
-   case GL_RENDERER:
-      switch (INTEL_CONTEXT(ctx)->intelScreen->deviceID) {
-      case PCI_CHIP_845_G:
-        chipset = "Intel(R) 845G"; break;
-      case PCI_CHIP_I830_M:
-        chipset = "Intel(R) 830M"; break;
-      case PCI_CHIP_I855_GM:
-        chipset = "Intel(R) 852GM/855GM"; break;
-      case PCI_CHIP_I865_G:
-        chipset = "Intel(R) 865G"; break;
-      case PCI_CHIP_I915_G:
-        chipset = "Intel(R) 915G"; break;
-      case PCI_CHIP_I915_GM:
-        chipset = "Intel(R) 915GM"; break;
-      case PCI_CHIP_I945_G:
-        chipset = "Intel(R) 945G"; break;
-      case PCI_CHIP_I945_GM:
-        chipset = "Intel(R) 945GM"; break;
-      case PCI_CHIP_I945_GME:
-        chipset = "Intel(R) 945GME"; break;
-      case PCI_CHIP_G33_G:
-        chipset = "Intel(R) G33"; break;
-      case PCI_CHIP_Q35_G:
-        chipset = "Intel(R) Q35"; break;
-      case PCI_CHIP_Q33_G:
-        chipset = "Intel(R) Q33"; break;
-      default:
-        chipset = "Unknown Intel Chipset"; break;
-      }
+      return (GLubyte *) i915_vendor_string;
 
-      (void) driGetRendererString( buffer, chipset, DRIVER_DATE, 0 );
-      return (GLubyte *) buffer;
+   case GL_RENDERER:
+      return
+         (GLubyte *) i915_get_renderer_string(intel->intelScreen->deviceID);
 
    default:
       return NULL;
    }
 }
 
+#define flushFront(screen)      ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
+
+static void
+intel_flush_front(struct gl_context *ctx)
+{
+   struct intel_context *intel = intel_context(ctx);
+    __DRIcontext *driContext = intel->driContext;
+    __DRIdrawable *driDrawable = driContext->driDrawablePriv;
+    __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
+
+    if (intel->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) {
+      if (flushFront(screen) && 
+          driDrawable &&
+          driDrawable->loaderPrivate) {
+         flushFront(screen)(driDrawable, driDrawable->loaderPrivate);
+
+        /* We set the dirty bit in intel_prepare_render() if we're
+         * front buffer rendering once we get there.
+         */
+        intel->front_buffer_dirty = false;
+      }
+   }
+}
+
+static void
+intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable);
+
+static unsigned
+intel_bits_per_pixel(const struct intel_renderbuffer *rb)
+{
+   return _mesa_get_format_bytes(intel_rb_format(rb)) * 8;
+}
+
+static void
+intel_query_dri2_buffers(struct intel_context *intel,
+                        __DRIdrawable *drawable,
+                        __DRIbuffer **buffers,
+                        int *count);
+
+static void
+intel_process_dri2_buffer(struct intel_context *intel,
+                         __DRIdrawable *drawable,
+                         __DRIbuffer *buffer,
+                         struct intel_renderbuffer *rb,
+                         const char *buffer_name);
+
+static void
+intel_update_dri2_buffers(struct intel_context *intel, __DRIdrawable *drawable)
+{
+   __DRIbuffer *buffers = NULL;
+   int i, count;
+   const char *region_name;
+   struct intel_renderbuffer *rb;
+   struct gl_framebuffer *fb = drawable->driverPrivate;
+
+   intel_query_dri2_buffers(intel, drawable, &buffers, &count);
+
+   if (buffers == NULL)
+      return;
+
+   for (i = 0; i < count; i++) {
+      switch (buffers[i].attachment) {
+      case __DRI_BUFFER_FRONT_LEFT:
+         rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+         region_name = "dri2 front buffer";
+         break;
+
+      case __DRI_BUFFER_FAKE_FRONT_LEFT:
+         rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+         region_name = "dri2 fake front buffer";
+         break;
+
+      case __DRI_BUFFER_BACK_LEFT:
+         rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+         region_name = "dri2 back buffer";
+         break;
+
+      case __DRI_BUFFER_DEPTH:
+      case __DRI_BUFFER_HIZ:
+      case __DRI_BUFFER_DEPTH_STENCIL:
+      case __DRI_BUFFER_STENCIL:
+      case __DRI_BUFFER_ACCUM:
+      default:
+         fprintf(stderr,
+                 "unhandled buffer attach event, attachment type %d\n",
+                 buffers[i].attachment);
+         return;
+      }
+
+      intel_process_dri2_buffer(intel, drawable, &buffers[i], rb, region_name);
+   }
+}
+
+void
+intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
+{
+   struct intel_context *intel = context->driverPrivate;
+   __DRIscreen *screen = intel->intelScreen->driScrnPriv;
+
+   /* Set this up front, so that in case our buffers get invalidated
+    * while we're getting new buffers, we don't clobber the stamp and
+    * thus ignore the invalidate. */
+   drawable->lastStamp = drawable->dri2.stamp;
+
+   if (unlikely(INTEL_DEBUG & DEBUG_DRI))
+      fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
+
+   if (screen->image.loader)
+      intel_update_image_buffers(intel, drawable);
+   else
+      intel_update_dri2_buffers(intel, drawable);
+
+   driUpdateFramebufferSize(&intel->ctx, drawable);
+}
 
 /**
- * Extension strings exported by the intel driver.
- *
- * \note
- * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
- * old i830-specific driver.
+ * intel_prepare_render should be called anywhere that curent read/drawbuffer
+ * state is required.
  */
-const struct dri_extension card_extensions[] =
+void
+intel_prepare_render(struct intel_context *intel)
 {
-    { "GL_ARB_multisample",                GL_ARB_multisample_functions },
-    { "GL_ARB_multitexture",               NULL },
-    { "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_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_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
-    { "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 }
-};
+   __DRIcontext *driContext = intel->driContext;
+   __DRIdrawable *drawable;
+
+   drawable = driContext->driDrawablePriv;
+   if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
+      if (drawable->lastStamp != drawable->dri2.stamp)
+        intel_update_renderbuffers(driContext, drawable);
+      intel_draw_buffer(&intel->ctx);
+      driContext->dri2.draw_stamp = drawable->dri2.stamp;
+   }
 
-extern const struct tnl_pipeline_stage _intel_render_stage;
-
-static const struct tnl_pipeline_stage *intel_pipeline[] = {
-   &_tnl_vertex_transform_stage,
-   &_tnl_vertex_cull_stage,
-   &_tnl_normal_transform_stage,
-   &_tnl_lighting_stage,
-   &_tnl_fog_coordinate_stage,
-   &_tnl_texgen_stage,
-   &_tnl_texture_transform_stage,
-   &_tnl_point_attenuation_stage,
-   &_tnl_vertex_program_stage,
-#if 1
-   &_intel_render_stage,     /* ADD: unclipped rastersetup-to-dma */
-#endif
-   &_tnl_render_stage,
-   0,
-};
+   drawable = driContext->driReadablePriv;
+   if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
+      if (drawable->lastStamp != drawable->dri2.stamp)
+        intel_update_renderbuffers(driContext, drawable);
+      driContext->dri2.read_stamp = drawable->dri2.stamp;
+   }
+
+   /* If we're currently rendering to the front buffer, the rendering
+    * that will happen next will probably dirty the front buffer.  So
+    * mark it as dirty here.
+    */
+   if (_mesa_is_front_buffer_drawing(intel->ctx.DrawBuffer))
+      intel->front_buffer_dirty = true;
+
+   /* Wait for the swapbuffers before the one we just emitted, so we
+    * don't get too many swaps outstanding for apps that are GPU-heavy
+    * but not CPU-heavy.
+    *
+    * We're using intelDRI2Flush (called from the loader before
+    * swapbuffer) and glFlush (for front buffer rendering) as the
+    * indicator that a frame is done and then throttle when we get
+    * here as we prepare to render the next frame.  At this point for
+    * round trips for swap/copy and getting new buffers are done and
+    * we'll spend less time waiting on the GPU.
+    *
+    * Unfortunately, we don't have a handle to the batch containing
+    * the swap, and getting our hands on that doesn't seem worth it,
+    * so we just us the first batch we emitted after the last swap.
+    */
+   if (intel->need_throttle && intel->first_post_swapbuffers_batch) {
+      if (!intel->disable_throttling)
+         drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
+      drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
+      intel->first_post_swapbuffers_batch = NULL;
+      intel->need_throttle = false;
+   }
+}
+
+static void
+intel_noninvalidate_viewport(struct gl_context *ctx)
+{
+    struct intel_context *intel = intel_context(ctx);
+    __DRIcontext *driContext = intel->driContext;
 
+    intelCalcViewport(ctx);
+
+    if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
+       dri2InvalidateDrawable(driContext->driDrawablePriv);
+       dri2InvalidateDrawable(driContext->driReadablePriv);
+    }
+}
 
-static const struct dri_debug_control debug_control[] =
+static void
+intel_viewport(struct gl_context *ctx)
 {
-    { "fall",  DEBUG_FALLBACKS },
-    { "tex",   DEBUG_TEXTURE },
-    { "ioctl", DEBUG_IOCTL },
-    { "prim",  DEBUG_PRIMS },
-    { "vert",  DEBUG_VERTS },
-    { "state", DEBUG_STATE },
-    { "verb",  DEBUG_VERBOSE },
-    { "dri",   DEBUG_DRI },
-    { "dma",   DEBUG_DMA },
-    { "san",   DEBUG_SANITY },
-    { "sync",  DEBUG_SYNC },
-    { "sleep", DEBUG_SLEEP },
-    { "pix",   DEBUG_PIXEL },
-    { NULL,    0 }
+    intelCalcViewport(ctx);
+}
+
+static const struct debug_control debug_control[] = {
+   { "tex",   DEBUG_TEXTURE},
+   { "state", DEBUG_STATE},
+   { "blit",  DEBUG_BLIT},
+   { "mip",   DEBUG_MIPTREE},
+   { "fall",  DEBUG_PERF},
+   { "perf",  DEBUG_PERF},
+   { "bat",   DEBUG_BATCH},
+   { "pix",   DEBUG_PIXEL},
+   { "buf",   DEBUG_BUFMGR},
+   { "reg",   DEBUG_REGION},
+   { "fbo",   DEBUG_FBO},
+   { "fs",    DEBUG_WM },
+   { "sync",  DEBUG_SYNC},
+   { "dri",   DEBUG_DRI },
+   { "stats", DEBUG_STATS },
+   { "wm",    DEBUG_WM },
+   { "aub",   DEBUG_AUB },
+   { NULL,    0 }
 };
 
 
-static void intelInvalidateState( GLcontext *ctx, GLuint new_state )
+static void
+intelInvalidateState(struct gl_context * ctx, GLuint new_state)
 {
-   _swrast_InvalidateState( ctx, new_state );
-   _swsetup_InvalidateState( ctx, new_state );
-   _vbo_InvalidateState( ctx, new_state );
-   _tnl_InvalidateState( ctx, new_state );
-   _tnl_invalidate_vertex_state( ctx, new_state );
-   INTEL_CONTEXT(ctx)->NewGLState |= new_state;
+    struct intel_context *intel = intel_context(ctx);
+
+    if (ctx->swrast_context)
+       _swrast_InvalidateState(ctx, new_state);
+   _vbo_InvalidateState(ctx, new_state);
+
+   intel->NewGLState |= new_state;
+
+   if (intel->vtbl.invalidate_state)
+      intel->vtbl.invalidate_state( intel, new_state );
 }
 
+void
+intel_flush_rendering_to_batch(struct gl_context *ctx)
+{
+   struct intel_context *intel = intel_context(ctx);
+
+   if (intel->Fallback)
+      _swrast_flush(ctx);
 
-void intelInitDriverFunctions( struct dd_function_table *functions )
+   INTEL_FIREVERTICES(intel);
+}
+
+void
+_intel_flush(struct gl_context *ctx, const char *file, int line)
 {
-   _mesa_init_driver_functions( functions );
+   struct intel_context *intel = intel_context(ctx);
 
-   functions->Clear = intelClear;
-   functions->Flush = intelglFlush;
-   functions->Finish = intelFinish;
-   functions->GetString = intelGetString;
-   functions->UpdateState = intelInvalidateState;
+   intel_flush_rendering_to_batch(ctx);
 
-   intelInitTextureFuncs( functions );
-   intelInitPixelFuncs( functions );
-   intelInitStateFuncs( functions );
+   if (intel->batch.used)
+      _intel_batchbuffer_flush(intel, file, line);
 }
 
-static void intel_emit_invarient_state( GLcontext *ctx )
+static void
+intel_glFlush(struct gl_context *ctx)
 {
+   struct intel_context *intel = intel_context(ctx);
+
+   intel_flush(ctx);
+   intel_flush_front(ctx);
+   if (_mesa_is_front_buffer_drawing(ctx->DrawBuffer))
+      intel->need_throttle = true;
 }
 
+void
+intelFinish(struct gl_context * ctx)
+{
+   struct intel_context *intel = intel_context(ctx);
+
+   intel_flush(ctx);
+   intel_flush_front(ctx);
 
+   if (intel->batch.last_bo)
+      drm_intel_bo_wait_rendering(intel->batch.last_bo);
+}
 
-GLboolean intelInitContext( intelContextPtr intel,
-                           const __GLcontextModes *mesaVis,
-                           __DRIcontextPrivate *driContextPriv,
-                           void *sharedContextPrivate,
-                           struct dd_function_table *functions )
+void
+intelInitDriverFunctions(struct dd_function_table *functions)
 {
-   GLcontext *ctx = &intel->ctx;
-   GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
-   __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
-   intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
-   drmI830Sarea *saPriv = (drmI830Sarea *)
-      (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
-   int fthrottle_mode;
-
-   if (!_mesa_initialize_context(&intel->ctx,
-                                mesaVis, shareCtx, 
-                                functions,
-                                (void*) intel))
-      return GL_FALSE;
+   _mesa_init_driver_functions(functions);
+
+   functions->Flush = intel_glFlush;
+   functions->Finish = intelFinish;
+   functions->GetString = intelGetString;
+   functions->UpdateState = intelInvalidateState;
+
+   intelInitTextureFuncs(functions);
+   intelInitTextureImageFuncs(functions);
+   intelInitTextureSubImageFuncs(functions);
+   intelInitTextureCopyImageFuncs(functions);
+   intelInitClearFuncs(functions);
+   intelInitBufferFuncs(functions);
+   intelInitPixelFuncs(functions);
+   intelInitBufferObjectFuncs(functions);
+   intel_init_syncobj_functions(functions);
+}
+
+bool
+intelInitContext(struct intel_context *intel,
+                 int api,
+                 unsigned major_version,
+                 unsigned minor_version,
+                 uint32_t flags,
+                 const struct gl_config * mesaVis,
+                 __DRIcontext * driContextPriv,
+                 void *sharedContextPrivate,
+                 struct dd_function_table *functions,
+                 unsigned *dri_ctx_error)
+{
+   struct gl_context *ctx = &intel->ctx;
+   struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
+   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
+   struct intel_screen *intelScreen = sPriv->driverPrivate;
+   int bo_reuse_mode;
+
+   /* Can't rely on invalidate events, fall back to glViewport hack */
+   if (!driContextPriv->driScreenPriv->dri2.useInvalidate)
+      functions->Viewport = intel_noninvalidate_viewport;
+   else
+      functions->Viewport = intel_viewport;
 
-   driContextPriv->driverPrivate = intel;
    intel->intelScreen = intelScreen;
-   intel->driScreen = sPriv;
-   intel->sarea = saPriv;
 
+   if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx,
+                                 functions)) {
+      *dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY;
+      printf("%s: failed to init mesa context\n", __func__);
+      return false;
+   }
+
+   driContextPriv->driverPrivate = intel;
+   intel->driContext = driContextPriv;
+
+   intel->gen = intelScreen->gen;
+
+   const int devID = intelScreen->deviceID;
+
+   intel->is_945 = IS_945(devID);
+
+   intel->has_swizzling = intel->intelScreen->hw_has_swizzling;
+
+   memset(&ctx->TextureFormatSupported,
+         0, sizeof(ctx->TextureFormatSupported));
 
-   (void) memset( intel->texture_heaps, 0, sizeof( intel->texture_heaps ) );
-   make_empty_list( & intel->swapped );
+   driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
+                       sPriv->myNum, "i915");
+   intel->maxBatchSize = 4096;
 
-   driParseConfigFiles (&intel->optionCache, &intelScreen->optionCache,
-                       intel->driScreen->myNum, "i915");
+   /* Estimate the size of the mappable aperture into the GTT.  There's an
+    * ioctl to get the whole GTT size, but not one to get the mappable subset.
+    * It turns out it's basically always 256MB, though some ancient hardware
+    * was smaller.
+    */
+   uint32_t gtt_size = 256 * 1024 * 1024;
+   if (intel->gen == 2)
+      gtt_size = 128 * 1024 * 1024;
+
+   /* We don't want to map two objects such that a memcpy between them would
+    * just fault one mapping in and then the other over and over forever.  So
+    * we would need to divide the GTT size by 2.  Additionally, some GTT is
+    * taken up by things like the framebuffer and the ringbuffer and such, so
+    * be more conservative.
+    */
+   intel->max_gtt_map_object_size = gtt_size / 4;
 
-   ctx->Const.MaxTextureMaxAnisotropy = 2.0;
+   intel->bufmgr = intelScreen->bufmgr;
+
+   bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
+   switch (bo_reuse_mode) {
+   case DRI_CONF_BO_REUSE_DISABLED:
+      break;
+   case DRI_CONF_BO_REUSE_ALL:
+      intel_bufmgr_gem_enable_reuse(intel->bufmgr);
+      break;
+   }
 
    ctx->Const.MinLineWidth = 1.0;
    ctx->Const.MinLineWidthAA = 1.0;
-   ctx->Const.MaxLineWidth = 3.0;
-   ctx->Const.MaxLineWidthAA = 3.0;
-   ctx->Const.LineWidthGranularity = 1.0;
+   ctx->Const.MaxLineWidth = 7.0;
+   ctx->Const.MaxLineWidthAA = 7.0;
+   ctx->Const.LineWidthGranularity = 0.5;
 
    ctx->Const.MinPointSize = 1.0;
    ctx->Const.MinPointSizeAA = 1.0;
@@ -310,467 +485,419 @@ GLboolean intelInitContext( intelContextPtr intel,
    ctx->Const.MaxPointSizeAA = 3.0;
    ctx->Const.PointSizeGranularity = 1.0;
 
+   ctx->Const.StripTextureBorder = GL_TRUE;
+
    /* reinitialize the context point state.
-    * It depend on constants in __GLcontextRec::Const
+    * It depend on constants in __struct gl_contextRec::Const
     */
    _mesa_init_point(ctx);
 
-   /* Initialize the software rasterizer and helper modules. */
-   _swrast_CreateContext( ctx );
-   _vbo_CreateContext( ctx );
-   _tnl_CreateContext( ctx );
-   _swsetup_CreateContext( ctx );
+   ctx->Const.MaxRenderbufferSize = 2048;
 
-   /* Install the customized pipeline: */
-   _tnl_destroy_pipeline( ctx );
-   _tnl_install_pipeline( ctx, intel_pipeline );
+   _swrast_CreateContext(ctx);
+   _vbo_CreateContext(ctx);
+   if (ctx->swrast_context) {
+      _tnl_CreateContext(ctx);
+      _swsetup_CreateContext(ctx);
 
-   /* Configure swrast to match hardware characteristics: */
-   _swrast_allow_pixel_fog( ctx, GL_FALSE );
-   _swrast_allow_vertex_fog( ctx, GL_TRUE );
-
-   /* Dri stuff */
-   intel->hHWContext = driContextPriv->hHWContext;
-   intel->driFd = sPriv->fd;
-   intel->driHwLock = (drmLock *) &sPriv->pSAREA->lock;
-
-   intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
-   intel->hw_stipple = 1;
-
-   switch(mesaVis->depthBits) {
-   case 0:                     /* what to do in this case? */
-   case 16:
-      intel->depth_scale = 1.0/0xffff;
-      intel->polygon_offset_scale = 1.0/0xffff;
-      intel->depth_clear_mask = ~0;
-      intel->ClearDepth = 0xffff;
-      break;
-   case 24:
-      intel->depth_scale = 1.0/0xffffff;
-      intel->polygon_offset_scale = 2.0/0xffffff; /* req'd to pass glean */
-      intel->depth_clear_mask = 0x00ffffff;
-      intel->stencil_clear_mask = 0xff000000;
-      intel->ClearDepth = 0x00ffffff;
-      break;
-   default:
-      assert(0); 
-      break;
+      /* Configure swrast to match hardware characteristics: */
+      _swrast_allow_pixel_fog(ctx, false);
+      _swrast_allow_vertex_fog(ctx, true);
    }
 
-   /* Initialize swrast, tnl driver tables: */
-   intelInitSpanFuncs( ctx );
-   intelInitTriFuncs( ctx );
+   _mesa_meta_init(ctx);
 
+   intel->hw_stipple = 1;
 
    intel->RenderIndex = ~0;
 
-   fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
-   intel->iw.irq_seq = -1;
-   intel->irqsEmitted = 0;
-
-   intel->do_irqs = (intel->intelScreen->irq_active &&
-                    fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
-
-   intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
+   intelInitExtensions(ctx);
 
-   intel->vblank_flags = (intel->intelScreen->irq_active != 0)
-       ? driGetDefaultVBlankFlags(&intel->optionCache) : VBLANK_FLAG_NO_IRQ;
+   INTEL_DEBUG = parse_debug_string(getenv("INTEL_DEBUG"), debug_control);
+   if (INTEL_DEBUG & DEBUG_BUFMGR)
+      dri_bufmgr_set_debug(intel->bufmgr, true);
+   if (INTEL_DEBUG & DEBUG_PERF)
+      intel->perf_debug = true;
 
-   (*dri_interface->getUST)(&intel->swap_ust);
-   _math_matrix_ctr (&intel->ViewportMatrix);
+   if (INTEL_DEBUG & DEBUG_AUB)
+      drm_intel_bufmgr_gem_set_aub_dump(intel->bufmgr, true);
 
-   driInitExtensions( ctx, card_extensions, GL_TRUE );
-
-   if (intel->ctx.Mesa_DXTn) {
-     _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
-     _mesa_enable_extension( ctx, "GL_S3_s3tc" );
-   }
-   else if (driQueryOptionb (&intel->optionCache, "force_s3tc_enable")) {
-     _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
-   }
+   intel_batchbuffer_init(intel);
 
-/*    driInitTextureObjects( ctx, & intel->swapped, */
-/*                       DRI_TEXMGR_DO_TEXTURE_1D | */
-/*                       DRI_TEXMGR_DO_TEXTURE_2D |  */
-/*                       DRI_TEXMGR_DO_TEXTURE_RECT ); */
+   intel_fbo_init(intel);
 
+   intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 
-   intelInitBatchBuffer(&intel->ctx);
-   intel->prim.flush = intel_emit_invarient_state;
    intel->prim.primitive = ~0;
 
+   /* Force all software fallbacks */
+   if (driQueryOptionb(&intel->optionCache, "no_rast")) {
+      fprintf(stderr, "disabling 3D rasterization\n");
+      intel->no_rast = 1;
+   }
 
-#if DO_DEBUG
-   INTEL_DEBUG  = driParseDebugString( getenv( "INTEL_DEBUG" ),
-                                      debug_control );
-   INTEL_DEBUG |= driParseDebugString( getenv( "INTEL_DEBUG" ),
-                                      debug_control );
-#endif
+   if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
+      fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
+      intel->always_flush_batch = 1;
+   }
 
-#ifndef VERBOSE
-   if (getenv("INTEL_VERBOSE"))
-      VERBOSE=1;
-#endif
+   if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
+      fprintf(stderr, "flushing GPU caches before/after each draw call\n");
+      intel->always_flush_cache = 1;
+   }
 
-   if (getenv("INTEL_NO_RAST") || 
-       getenv("INTEL_NO_RAST")) {
-      fprintf(stderr, "disabling 3D rasterization\n");
-      FALLBACK(intel, INTEL_FALLBACK_USER, 1); 
+   if (driQueryOptionb(&intel->optionCache, "disable_throttling")) {
+      fprintf(stderr, "disabling flush throttling\n");
+      intel->disable_throttling = 1;
    }
 
-   return GL_TRUE;
+   return true;
 }
 
-void intelDestroyContext(__DRIcontextPrivate *driContextPriv)
+void
+intelDestroyContext(__DRIcontext * driContextPriv)
 {
-   intelContextPtr intel = (intelContextPtr) driContextPriv->driverPrivate;
+   struct intel_context *intel =
+      (struct intel_context *) driContextPriv->driverPrivate;
+   struct gl_context *ctx = &intel->ctx;
 
-   assert(intel); /* should never be null */
+   assert(intel);               /* should never be null */
    if (intel) {
-      GLboolean   release_texture_heaps;
+      INTEL_FIREVERTICES(intel);
 
-      INTEL_FIREVERTICES( intel );
+      /* Dump a final BMP in case the application doesn't call SwapBuffers */
+      if (INTEL_DEBUG & DEBUG_AUB) {
+         intel_batchbuffer_flush(intel);
+        aub_dump_bmp(&intel->ctx);
+      }
 
-      intel->vtbl.destroy( intel );
+      _mesa_meta_free(&intel->ctx);
 
-      release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
-      _swsetup_DestroyContext (&intel->ctx);
-      _tnl_DestroyContext (&intel->ctx);
-      _vbo_DestroyContext (&intel->ctx);
+      intel->vtbl.destroy(intel);
 
-      _swrast_DestroyContext (&intel->ctx);
-      intel->Fallback = 0;     /* don't call _swrast_Flush later */
+      if (ctx->swrast_context) {
+         _swsetup_DestroyContext(&intel->ctx);
+         _tnl_DestroyContext(&intel->ctx);
+      }
+      _vbo_DestroyContext(&intel->ctx);
 
-      intelDestroyBatchBuffer(&intel->ctx);
-      
+      if (ctx->swrast_context)
+         _swrast_DestroyContext(&intel->ctx);
+      intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 
-      if ( release_texture_heaps ) {
-         /* This share group is about to go away, free our private
-          * texture object data.
-          */
-         int i;
+      intel_batchbuffer_free(intel);
 
-         for ( i = 0 ; i < intel->nr_heaps ; i++ ) {
-           driDestroyTextureHeap( intel->texture_heaps[ i ] );
-           intel->texture_heaps[ i ] = NULL;
-         }
+      free(intel->prim.vb);
+      intel->prim.vb = NULL;
+      drm_intel_bo_unreference(intel->prim.vb_bo);
+      intel->prim.vb_bo = NULL;
+      drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
+      intel->first_post_swapbuffers_batch = NULL;
 
-        assert( is_empty_list( & intel->swapped ) );
-      }
+      driDestroyOptionCache(&intel->optionCache);
 
       /* free the Mesa context */
-      _mesa_destroy_context(&intel->ctx);
-   }
-}
+      _mesa_free_context_data(&intel->ctx);
 
-void intelSetFrontClipRects( intelContextPtr intel )
-{
-   __DRIdrawablePrivate *dPriv = intel->driDrawable;
-
-   if (!dPriv) return;
+      _math_matrix_dtr(&intel->ViewportMatrix);
 
-   intel->numClipRects = dPriv->numClipRects;
-   intel->pClipRects = dPriv->pClipRects;
-   intel->drawX = dPriv->x;
-   intel->drawY = dPriv->y;
+      ralloc_free(intel);
+      driContextPriv->driverPrivate = NULL;
+   }
 }
 
-
-void intelSetBackClipRects( intelContextPtr intel )
+GLboolean
+intelUnbindContext(__DRIcontext * driContextPriv)
 {
-   __DRIdrawablePrivate *dPriv = intel->driDrawable;
-
-   if (!dPriv) return;
-
-   if (intel->sarea->pf_enabled == 0 && dPriv->numBackClipRects == 0) {
-      intel->numClipRects = dPriv->numClipRects;
-      intel->pClipRects = dPriv->pClipRects;
-      intel->drawX = dPriv->x;
-      intel->drawY = dPriv->y;
-   } else {
-      intel->numClipRects = dPriv->numBackClipRects;
-      intel->pClipRects = dPriv->pBackClipRects;
-      intel->drawX = dPriv->backX;
-      intel->drawY = dPriv->backY;
-      
-      if (dPriv->numBackClipRects == 1 &&
-         dPriv->x == dPriv->backX &&
-         dPriv->y == dPriv->backY) {
-      
-        /* Repeat the calculation of the back cliprect dimensions here
-         * as early versions of dri.a in the Xserver are incorrect.  Try
-         * very hard not to restrict future versions of dri.a which
-         * might eg. allocate truly private back buffers.
-         */
-        int x1, y1;
-        int x2, y2;
-        
-        x1 = dPriv->x;
-        y1 = dPriv->y;      
-        x2 = dPriv->x + dPriv->w;
-        y2 = dPriv->y + dPriv->h;
-        
-        if (x1 < 0) x1 = 0;
-        if (y1 < 0) y1 = 0;
-        if (x2 > intel->intelScreen->width) x2 = intel->intelScreen->width;
-        if (y2 > intel->intelScreen->height) y2 = intel->intelScreen->height;
-
-        if (x1 == dPriv->pBackClipRects[0].x1 &&
-            y1 == dPriv->pBackClipRects[0].y1) {
-
-           dPriv->pBackClipRects[0].x2 = x2;
-           dPriv->pBackClipRects[0].y2 = y2;
-        }
-      }
-   }
-}
+   /* Unset current context and dispath table */
+   _mesa_make_current(NULL, NULL, NULL);
 
+   return true;
+}
 
-void intelWindowMoved( intelContextPtr intel )
+GLboolean
+intelMakeCurrent(__DRIcontext * driContextPriv,
+                 __DRIdrawable * driDrawPriv,
+                 __DRIdrawable * driReadPriv)
 {
-   __DRIdrawablePrivate *dPriv = intel->driDrawable;
-   GLframebuffer *drawFb = (GLframebuffer *) dPriv->driverPrivate;
-
-   if (!intel->ctx.DrawBuffer) {
-      intelSetFrontClipRects( intel );
-   }
-   else {
-      driUpdateFramebufferSize(&intel->ctx, dPriv);
-      switch (drawFb->_ColorDrawBufferMask[0]) {
-      case BUFFER_BIT_FRONT_LEFT:
-        intelSetFrontClipRects( intel );
-        break;
-      case BUFFER_BIT_BACK_LEFT:
-        intelSetBackClipRects( intel );
-        break;
-      default:
-        /* glDrawBuffer(GL_NONE or GL_FRONT_AND_BACK): software fallback */
-        intelSetFrontClipRects( intel );
-      }
-   }
+   struct intel_context *intel;
+   GET_CURRENT_CONTEXT(curCtx);
 
-   if (drawFb->Width != dPriv->w || drawFb->Height != dPriv->h) {
-      /* update Mesa's notion of framebuffer/window size */
-      _mesa_resize_framebuffer(&intel->ctx, drawFb, dPriv->w, dPriv->h);
-      drawFb->Initialized = GL_TRUE; /* XXX remove someday */
-   }
+   if (driContextPriv)
+      intel = (struct intel_context *) driContextPriv->driverPrivate;
+   else
+      intel = NULL;
 
-   /* Set state we know depends on drawable parameters:
+   /* According to the glXMakeCurrent() man page: "Pending commands to
+    * the previous context, if any, are flushed before it is released."
+    * But only flush if we're actually changing contexts.
     */
-   {
-      GLcontext *ctx = &intel->ctx;
-
-      if (intel->intelScreen->driScrnPriv->ddxMinor >= 7) {
-        drmI830Sarea *sarea = intel->sarea;
-        drm_clip_rect_t drw_rect = { .x1 = dPriv->x, .x2 = dPriv->x + dPriv->w,
-                                     .y1 = dPriv->y, .y2 = dPriv->y + dPriv->h };
-        drm_clip_rect_t planeA_rect = { .x1 = sarea->planeA_x,
-                                       .x2 = sarea->planeA_x + sarea->planeA_w,
-                                       .y1 = sarea->planeA_y,
-                                       .y2 = sarea->planeA_y + sarea->planeA_h };
-        drm_clip_rect_t planeB_rect = { .x1 = sarea->planeB_x,
-                                       .x2 = sarea->planeB_x + sarea->planeB_w,
-                                       .y1 = sarea->planeB_y,
-                                       .y2 = sarea->planeB_y + sarea->planeB_h };
-        GLint areaA = driIntersectArea( drw_rect, planeA_rect );
-        GLint areaB = driIntersectArea( drw_rect, planeB_rect );
-        GLuint flags = intel->vblank_flags;
-
-        if (areaB > areaA || (areaA == areaB && areaB > 0)) {
-           flags = intel->vblank_flags | VBLANK_FLAG_SECONDARY;
-        } else {
-           flags = intel->vblank_flags & ~VBLANK_FLAG_SECONDARY;
-        }
-
-        if (flags != intel->vblank_flags) {
-           intel->vblank_flags = flags;
-           driGetCurrentVBlank(dPriv, intel->vblank_flags, &intel->vbl_seq);
-        }
-      } else {
-        intel->vblank_flags &= ~VBLANK_FLAG_SECONDARY;
-      }
-
-      ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
-                          ctx->Scissor.Width, ctx->Scissor.Height );
-      
-      ctx->Driver.DepthRange( ctx, 
-                             ctx->Viewport.Near,
-                             ctx->Viewport.Far );
+   if (intel_context(curCtx) && intel_context(curCtx) != intel) {
+      _mesa_flush(curCtx);
    }
-}
-
-GLboolean intelUnbindContext(__DRIcontextPrivate *driContextPriv)
-{
-   return GL_TRUE;
-}
-
-GLboolean intelMakeCurrent(__DRIcontextPrivate *driContextPriv,
-                         __DRIdrawablePrivate *driDrawPriv,
-                         __DRIdrawablePrivate *driReadPriv)
-{
 
    if (driContextPriv) {
-      intelContextPtr intel = (intelContextPtr) driContextPriv->driverPrivate;
-
-      if ( intel->driDrawable != driDrawPriv ) {
-        /* Shouldn't the readbuffer be stored also? */
-        driDrawableInitVBlank( driDrawPriv, intel->vblank_flags,
-                               &intel->vbl_seq );
-
-        intel->driDrawable = driDrawPriv;
-        intelWindowMoved( intel );
+      struct gl_context *ctx = &intel->ctx;
+      struct gl_framebuffer *fb, *readFb;
+      
+      if (driDrawPriv == NULL && driReadPriv == NULL) {
+        fb = _mesa_get_incomplete_framebuffer();
+        readFb = _mesa_get_incomplete_framebuffer();
+      } else {
+        fb = driDrawPriv->driverPrivate;
+        readFb = driReadPriv->driverPrivate;
+        driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
+        driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
       }
 
-      _mesa_make_current(&intel->ctx,
-                        (GLframebuffer *) driDrawPriv->driverPrivate,
-                        (GLframebuffer *) driReadPriv->driverPrivate);
+      intel_prepare_render(intel);
+      _mesa_make_current(ctx, fb, readFb);
 
-      intel->ctx.Driver.DrawBuffer( &intel->ctx, intel->ctx.Color.DrawBuffer[0] );
-   } else {
+      /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
+       * is NULL at that point.  We can't call _mesa_makecurrent()
+       * first, since we need the buffer size for the initial
+       * viewport.  So just call intel_draw_buffer() again here. */
+      intel_draw_buffer(ctx);
+   }
+   else {
       _mesa_make_current(NULL, NULL, NULL);
    }
 
-   return GL_TRUE;
+   return true;
 }
 
 /**
- * Use the information in the sarea to update the screen parameters
- * related to screen rotation.
+ * \brief Query DRI2 to obtain a DRIdrawable's buffers.
+ *
+ * To determine which DRI buffers to request, examine the renderbuffers
+ * attached to the drawable's framebuffer. Then request the buffers with
+ * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \param drawable      Drawable whose buffers are queried.
+ * \param buffers       [out] List of buffers returned by DRI2 query.
+ * \param buffer_count  [out] Number of buffers returned.
+ *
+ * \see intel_update_renderbuffers()
+ * \see DRI2GetBuffers()
+ * \see DRI2GetBuffersWithFormat()
  */
 static void
-intelUpdateScreenRotation(intelContextPtr intel,
-                          __DRIscreenPrivate *sPriv,
-                          drmI830Sarea *sarea)
+intel_query_dri2_buffers(struct intel_context *intel,
+                        __DRIdrawable *drawable,
+                        __DRIbuffer **buffers,
+                        int *buffer_count)
 {
-   intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
-   intelRegion *colorBuf;
-
-   intelUnmapScreenRegions(intelScreen);
+   __DRIscreen *screen = intel->intelScreen->driScrnPriv;
+   struct gl_framebuffer *fb = drawable->driverPrivate;
+   int i = 0;
+   unsigned attachments[8];
+
+   struct intel_renderbuffer *front_rb;
+   struct intel_renderbuffer *back_rb;
+
+   front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+   back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+
+   memset(attachments, 0, sizeof(attachments));
+   if ((_mesa_is_front_buffer_drawing(fb) ||
+        _mesa_is_front_buffer_reading(fb) ||
+       !back_rb) && front_rb) {
+      /* If a fake front buffer is in use, then querying for
+       * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
+       * the real front buffer to the fake front buffer.  So before doing the
+       * query, we need to make sure all the pending drawing has landed in the
+       * real front buffer.
+       */
+      intel_flush(&intel->ctx);
+      intel_flush_front(&intel->ctx);
+
+      attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
+      attachments[i++] = intel_bits_per_pixel(front_rb);
+   } else if (front_rb && intel->front_buffer_dirty) {
+      /* We have pending front buffer rendering, but we aren't querying for a
+       * front buffer.  If the front buffer we have is a fake front buffer,
+       * the X server is going to throw it away when it processes the query.
+       * So before doing the query, make sure all the pending drawing has
+       * landed in the real front buffer.
+       */
+      intel_flush(&intel->ctx);
+      intel_flush_front(&intel->ctx);
+   }
 
-   intelUpdateScreenFromSAREA(intelScreen, sarea);
+   if (back_rb) {
+      attachments[i++] = __DRI_BUFFER_BACK_LEFT;
+      attachments[i++] = intel_bits_per_pixel(back_rb);
+   }
 
-   /* update the current hw offsets for the color and depth buffers */
-   if (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_BACK_LEFT)
-      colorBuf = &intelScreen->back;
-   else
-      colorBuf = &intelScreen->front;
-   intel->vtbl.update_color_z_regions(intel, colorBuf, &intelScreen->depth);
+   assert(i <= ARRAY_SIZE(attachments));
 
-   if (!intelMapScreenRegions(sPriv)) {
-      fprintf(stderr, "ERROR Remapping screen regions!!!\n");
-   }
+   *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
+                                                       &drawable->w,
+                                                       &drawable->h,
+                                                       attachments, i / 2,
+                                                       buffer_count,
+                                                       drawable->loaderPrivate);
 }
 
-void intelGetLock( intelContextPtr intel, GLuint flags )
+/**
+ * \brief Assign a DRI buffer's DRM region to a renderbuffer.
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \par Note:
+ *    DRI buffers whose attachment point is DRI2BufferStencil or
+ *    DRI2BufferDepthStencil are handled as special cases.
+ *
+ * \param buffer_name is a human readable name, such as "dri2 front buffer",
+ *        that is passed to intel_region_alloc_for_handle().
+ *
+ * \see intel_update_renderbuffers()
+ * \see intel_region_alloc_for_handle()
+ */
+static void
+intel_process_dri2_buffer(struct intel_context *intel,
+                         __DRIdrawable *drawable,
+                         __DRIbuffer *buffer,
+                         struct intel_renderbuffer *rb,
+                         const char *buffer_name)
 {
-   __DRIdrawablePrivate *dPriv = intel->driDrawable;
-   __DRIscreenPrivate *sPriv = intel->driScreen;
-   intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
-   drmI830Sarea * sarea = intel->sarea;
-   unsigned   i;
+   struct intel_region *region = NULL;
 
-   drmGetLock(intel->driFd, intel->hHWContext, flags);
+   if (!rb)
+      return;
 
-   /* If the window moved, may need to set a new cliprect now.
-    *
-    * NOTE: This releases and regains the hw lock, so all state
-    * checking must be done *after* this call:
+   /* We try to avoid closing and reopening the same BO name, because the first
+    * use of a mapping of the buffer involves a bunch of page faulting which is
+    * moderately expensive.
     */
-   if (dPriv)
-      DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
-
-   if (dPriv && intel->lastStamp != dPriv->lastStamp) {
-      intelWindowMoved( intel );
-      intel->lastStamp = dPriv->lastStamp;
+   if (rb->mt &&
+       rb->mt->region &&
+       rb->mt->region->name == buffer->name)
+      return;
+
+   if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
+      fprintf(stderr,
+             "attaching buffer %d, at %d, cpp %d, pitch %d\n",
+             buffer->name, buffer->attachment,
+             buffer->cpp, buffer->pitch);
    }
 
-   /* If we lost context, need to dump all registers to hardware.
-    * Note that we don't care about 2d contexts, even if they perform
-    * accelerated commands, so the DRI locking in the X server is even
-    * more broken than usual.
-    */
+   intel_miptree_release(&rb->mt);
+   region = intel_region_alloc_for_handle(intel->intelScreen,
+                                          buffer->cpp,
+                                          drawable->w,
+                                          drawable->h,
+                                          buffer->pitch,
+                                          buffer->name,
+                                          buffer_name);
+   if (!region)
+      return;
+
+   rb->mt = intel_miptree_create_for_dri2_buffer(intel,
+                                                 buffer->attachment,
+                                                 intel_rb_format(rb),
+                                                 region);
+   intel_region_release(&region);
+}
 
-   if (sarea->width != intelScreen->width ||
-       sarea->height != intelScreen->height ||
-       sarea->rotation != intelScreen->current_rotation) {
-      intelUpdateScreenRotation(intel, sPriv, sarea);
+/**
+ * \brief Query DRI Image loader to obtain a DRIdrawable's buffers.
+ *
+ * To determine which DRI buffers to request, examine the renderbuffers
+ * attached to the drawable's framebuffer. Then request the buffers with
+ * dri3
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \param drawable      Drawable whose buffers are queried.
+ * \param buffers       [out] List of buffers returned by DRI2 query.
+ * \param buffer_count  [out] Number of buffers returned.
+ *
+ * \see intel_update_renderbuffers()
+ */
 
-      /* This will drop the outstanding batchbuffer on the floor */
-      intel->batch.ptr -= (intel->batch.size - intel->batch.space);
-      intel->batch.space = intel->batch.size;
-      /* lose all primitives */
-      intel->prim.primitive = ~0;
-      intel->prim.start_ptr = 0;
-      intel->prim.flush = 0;
-      intel->vtbl.lost_hardware( intel ); 
+static void
+intel_update_image_buffer(struct intel_context *intel,
+                          __DRIdrawable *drawable,
+                          struct intel_renderbuffer *rb,
+                          __DRIimage *buffer,
+                          enum __DRIimageBufferMask buffer_type)
+{
+   struct intel_region *region = buffer->region;
 
-      intel->lastStamp = 0; /* force window update */
+   if (!rb || !region)
+      return;
 
-      /* Release batch buffer
-       */
-      intelDestroyBatchBuffer(&intel->ctx);
-      intelInitBatchBuffer(&intel->ctx);
-      intel->prim.flush = intel_emit_invarient_state;
+   unsigned num_samples = rb->Base.Base.NumSamples;
 
-      /* Still need to reset the global LRU?
-       */
-      intel_driReinitTextureHeap( intel->texture_heaps[0], intel->intelScreen->tex.size );
-   }
+   if (rb->mt &&
+       rb->mt->region &&
+       rb->mt->region == region)
+      return;
 
-   /* Shared texture managment - if another client has played with
-    * texture space, figure out which if any of our textures have been
-    * ejected, and update our global LRU.
-    */
-   for ( i = 0 ; i < intel->nr_heaps ; i++ ) {
-      DRI_AGE_TEXTURES( intel->texture_heaps[ i ] );
-   }
+   intel_miptree_release(&rb->mt);
+   rb->mt = intel_miptree_create_for_image_buffer(intel,
+                                                  buffer_type,
+                                                  intel_rb_format(rb),
+                                                  num_samples,
+                                                  region);
 }
 
 
-void intelSwapBuffers( __DRIdrawablePrivate *dPriv )
+static void
+intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable)
 {
-   if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
-      intelContextPtr intel;
-      GLcontext *ctx;
-      intel = (intelContextPtr) dPriv->driContextPriv->driverPrivate;
-      ctx = &intel->ctx;
-      if (ctx->Visual.doubleBufferMode) {
-         intelScreenPrivate *screen = intel->intelScreen;
-        _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
-        if ( 0 /*intel->doPageFlip*/ ) { /* doPageFlip is never set !!! */
-           intelPageFlip( dPriv );
-        } else {
-            intelCopyBuffer( dPriv, NULL );
-        }
-         if (screen->current_rotation != 0) {
-            intelRotateWindow(intel, dPriv, BUFFER_BIT_FRONT_LEFT);
-         }
-      }
-   } else {
-      /* XXX this shouldn't be an error but we can't handle it for now */
-      fprintf(stderr, "%s: drawable has no context!\n", __FUNCTION__);
+   struct gl_framebuffer *fb = drawable->driverPrivate;
+   __DRIscreen *screen = intel->intelScreen->driScrnPriv;
+   struct intel_renderbuffer *front_rb;
+   struct intel_renderbuffer *back_rb;
+   struct __DRIimageList images;
+   unsigned int format;
+   uint32_t buffer_mask = 0;
+
+   front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+   back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+
+   if (back_rb)
+      format = intel_rb_format(back_rb);
+   else if (front_rb)
+      format = intel_rb_format(front_rb);
+   else
+      return;
+
+   if (front_rb && (_mesa_is_front_buffer_drawing(fb) ||
+                    _mesa_is_front_buffer_reading(fb) || !back_rb)) {
+      buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
    }
-}
 
-void intelCopySubBuffer( __DRIdrawablePrivate *dPriv,
-                        int x, int y, int w, int h )
-{
-   if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
-      intelContextPtr intel;
-      GLcontext *ctx;
-      intel = (intelContextPtr) dPriv->driContextPriv->driverPrivate;
-      ctx = &intel->ctx;
-      if (ctx->Visual.doubleBufferMode) {
-        drm_clip_rect_t rect;
-        rect.x1 = x + dPriv->x;
-        rect.y1 = (dPriv->h - y - h) + dPriv->y;
-        rect.x2 = rect.x1 + w;
-        rect.y2 = rect.y1 + h;
-        _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
-        intelCopyBuffer( dPriv, &rect );
-      }
-   } else {
-      /* XXX this shouldn't be an error but we can't handle it for now */
-      fprintf(stderr, "%s: drawable has no context!\n", __FUNCTION__);
+   if (back_rb)
+      buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
+
+   (*screen->image.loader->getBuffers) (drawable,
+                                        driGLFormatToImageFormat(format),
+                                        &drawable->dri2.stamp,
+                                        drawable->loaderPrivate,
+                                        buffer_mask,
+                                        &images);
+
+   if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
+      drawable->w = images.front->width;
+      drawable->h = images.front->height;
+      intel_update_image_buffer(intel,
+                                drawable,
+                                front_rb,
+                                images.front,
+                                __DRI_IMAGE_BUFFER_FRONT);
+   }
+   if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
+      drawable->w = images.back->width;
+      drawable->h = images.back->height;
+      intel_update_image_buffer(intel,
+                                drawable,
+                                back_rb,
+                                images.back,
+                                __DRI_IMAGE_BUFFER_BACK);
    }
 }