X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fstate_trackers%2Fegl%2Fcommon%2Fnative_helper.c;h=ebe5144b36799819fab79c5b712f05c37c38ee76;hb=d7522ed13052a3d30bc4faedce04685263f57933;hp=0f2d02032b575707d08ce7f587c503fa44030640;hpb=9032d2a13ecd019206a48767d9205c0aafa7cca2;p=mesa.git

diff --git a/src/gallium/state_trackers/egl/common/native_helper.c b/src/gallium/state_trackers/egl/common/native_helper.c
index 0f2d02032b5..ebe5144b367 100644
--- a/src/gallium/state_trackers/egl/common/native_helper.c
+++ b/src/gallium/state_trackers/egl/common/native_helper.c
@@ -3,6 +3,7 @@
  * Version:  7.9
  *
  * Copyright (C) 2010 LunarG Inc.
+ * Copyright (C) 2011 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"),
@@ -24,6 +25,7 @@
  *
  * Authors:
  *    Chia-I Wu <olv@lunarg.com>
+ *    Thomas Hellstrom <thellstrom@vmware.com>
  */
 
 #include "util/u_inlines.h"
@@ -34,6 +36,14 @@
 
 #include "native_helper.h"
 
+/**
+ * Number of swap fences and mask
+ */
+
+#define EGL_SWAP_FENCES_MAX 4
+#define EGL_SWAP_FENCES_MASK 3
+#define EGL_SWAP_FENCES_DEFAULT 1
+
 struct resource_surface {
    struct pipe_screen *screen;
    enum pipe_format format;
@@ -42,6 +52,15 @@ struct resource_surface {
    struct pipe_resource *resources[NUM_NATIVE_ATTACHMENTS];
    uint resource_mask;
    uint width, height;
+
+   /**
+    * Swap fences.
+    */
+   struct pipe_fence_handle *swap_fences[EGL_SWAP_FENCES_MAX];
+   unsigned int cur_fences;
+   unsigned int head;
+   unsigned int tail;
+   unsigned int desired_fences;
 };
 
 struct resource_surface *
@@ -49,11 +68,16 @@ resource_surface_create(struct pipe_screen *screen,
                         enum pipe_format format, uint bind)
 {
    struct resource_surface *rsurf = CALLOC_STRUCT(resource_surface);
+   char *swap_fences = getenv("EGL_THROTTLE_FENCES");
 
    if (rsurf) {
       rsurf->screen = screen;
       rsurf->format = format;
       rsurf->bind = bind;
+      rsurf->desired_fences = (swap_fences) ? atoi(swap_fences) :
+	 EGL_SWAP_FENCES_DEFAULT;
+      if (rsurf->desired_fences > EGL_SWAP_FENCES_MAX)
+	 rsurf->desired_fences = EGL_SWAP_FENCES_MAX;
    }
 
    return rsurf;
@@ -143,6 +167,14 @@ resource_surface_add_resources(struct resource_surface *rsurf,
    return ((rsurf->resource_mask & resource_mask) == resource_mask);
 }
 
+void
+resource_surface_import_resource(struct resource_surface *rsurf,
+                                 enum native_attachment which,
+                                 struct pipe_resource *pres)
+{
+	pipe_resource_reference(&rsurf->resources[which], pres);
+	rsurf->resource_mask |= 1 << which;
+}
 
 void
 resource_surface_get_resources(struct resource_surface *rsurf,
@@ -217,3 +249,238 @@ resource_surface_present(struct resource_surface *rsurf,
 
    return TRUE;
 }
+
+/**
+ * Schedule a copy swap from the back to the front buffer using the
+ * native display's copy context.
+ */
+boolean
+resource_surface_copy_swap(struct resource_surface *rsurf,
+			   struct native_display *ndpy)
+{
+   struct pipe_resource *ftex;
+   struct pipe_resource *btex;
+   struct pipe_context *pipe;
+   struct pipe_box src_box;
+   boolean ret = FALSE;
+
+   pipe = ndpy_get_copy_context(ndpy);
+   if (!pipe)
+      return FALSE;
+
+   ftex = resource_surface_get_single_resource(rsurf,
+					       NATIVE_ATTACHMENT_FRONT_LEFT);
+   if (!ftex)
+      goto out_no_ftex;
+   btex = resource_surface_get_single_resource(rsurf,
+					       NATIVE_ATTACHMENT_BACK_LEFT);
+   if (!btex)
+      goto out_no_btex;
+
+   u_box_origin_2d(ftex->width0, ftex->height0, &src_box);
+   pipe->resource_copy_region(pipe, ftex, 0, 0, 0, 0,
+			      btex, 0, &src_box);
+   ret = TRUE;
+
+ out_no_btex:
+   pipe_resource_reference(&btex, NULL);
+ out_no_ftex:
+   pipe_resource_reference(&ftex, NULL);
+
+   return ret;
+}
+
+static struct pipe_fence_handle *
+swap_fences_pop_front(struct resource_surface *rsurf)
+{
+   struct pipe_screen *screen = rsurf->screen;
+   struct pipe_fence_handle *fence = NULL;
+
+   if (rsurf->desired_fences == 0)
+      return NULL;
+
+   if (rsurf->cur_fences >= rsurf->desired_fences) {
+      screen->fence_reference(screen, &fence, rsurf->swap_fences[rsurf->tail]);
+      screen->fence_reference(screen, &rsurf->swap_fences[rsurf->tail++], NULL);
+      rsurf->tail &= EGL_SWAP_FENCES_MASK;
+      --rsurf->cur_fences;
+   }
+   return fence;
+}
+
+static void
+swap_fences_push_back(struct resource_surface *rsurf,
+		      struct pipe_fence_handle *fence)
+{
+   struct pipe_screen *screen = rsurf->screen;
+
+   if (!fence || rsurf->desired_fences == 0)
+      return;
+
+   while(rsurf->cur_fences == rsurf->desired_fences)
+      swap_fences_pop_front(rsurf);
+
+   rsurf->cur_fences++;
+   screen->fence_reference(screen, &rsurf->swap_fences[rsurf->head++],
+			   fence);
+   rsurf->head &= EGL_SWAP_FENCES_MASK;
+}
+
+boolean
+resource_surface_throttle(struct resource_surface *rsurf)
+{
+   struct pipe_screen *screen = rsurf->screen;
+   struct pipe_fence_handle *fence = swap_fences_pop_front(rsurf);
+
+   if (fence) {
+      (void) screen->fence_finish(screen, fence, PIPE_TIMEOUT_INFINITE);
+      screen->fence_reference(screen, &fence, NULL);
+      return TRUE;
+   }
+
+   return FALSE;
+}
+
+boolean
+resource_surface_flush(struct resource_surface *rsurf,
+		       struct native_display *ndpy)
+{
+   struct pipe_fence_handle *fence = NULL;
+   struct pipe_screen *screen = rsurf->screen;
+   struct pipe_context *pipe= ndpy_get_copy_context(ndpy);
+
+   if (!pipe)
+      return FALSE;
+
+   pipe->flush(pipe, &fence);
+   if (fence == NULL)
+      return FALSE;
+
+   swap_fences_push_back(rsurf, fence);
+   screen->fence_reference(screen, &fence, NULL);
+
+   return TRUE;
+}
+
+void
+resource_surface_wait(struct resource_surface *rsurf)
+{
+   while (resource_surface_throttle(rsurf));
+}
+
+boolean
+native_display_copy_to_pixmap(struct native_display *ndpy,
+                              EGLNativePixmapType pix,
+                              struct pipe_resource *src)
+{
+   struct pipe_context *pipe;
+   struct native_surface *nsurf;
+   struct pipe_resource *dst;
+   struct pipe_resource *tmp[NUM_NATIVE_ATTACHMENTS];
+   const enum native_attachment natt = NATIVE_ATTACHMENT_FRONT_LEFT;
+
+   pipe = ndpy_get_copy_context(ndpy);
+   if (!pipe)
+      return FALSE;
+
+   nsurf = ndpy->create_pixmap_surface(ndpy, pix, NULL);
+   if (!nsurf)
+      return FALSE;
+
+   /* get the texutre */
+   tmp[natt] = NULL;
+   nsurf->validate(nsurf, 1 << natt, NULL, tmp, NULL, NULL);
+   dst = tmp[natt];
+
+   if (dst && dst->format == src->format) {
+      struct native_present_control ctrl;
+      struct pipe_box src_box;
+
+      u_box_origin_2d(src->width0, src->height0, &src_box);
+      pipe->resource_copy_region(pipe, dst, 0, 0, 0, 0, src, 0, &src_box);
+      pipe->flush(pipe, NULL);
+
+      memset(&ctrl, 0, sizeof(ctrl));
+      ctrl.natt = natt;
+      nsurf->present(nsurf, &ctrl);
+   }
+
+   if (dst)
+      pipe_resource_reference(&dst, NULL);
+
+   nsurf->destroy(nsurf);
+
+   return TRUE;
+}
+
+#include "state_tracker/drm_driver.h"
+struct pipe_resource *
+drm_display_import_native_buffer(struct native_display *ndpy,
+                                 struct native_buffer *nbuf)
+{
+   struct pipe_screen *screen = ndpy->screen;
+   struct pipe_resource *res = NULL;
+
+   switch (nbuf->type) {
+   case NATIVE_BUFFER_DRM:
+      {
+         struct winsys_handle wsh;
+
+         memset(&wsh, 0, sizeof(wsh));
+         wsh.handle = nbuf->u.drm.name;
+         wsh.stride = nbuf->u.drm.stride;
+
+         res = screen->resource_from_handle(screen, &nbuf->u.drm.templ, &wsh);
+      }
+      break;
+   default:
+      break;
+   }
+
+   return res;
+}
+
+boolean
+drm_display_export_native_buffer(struct native_display *ndpy,
+                                 struct pipe_resource *res,
+                                 struct native_buffer *nbuf)
+{
+   struct pipe_screen *screen = ndpy->screen;
+   boolean ret = FALSE;
+
+   switch (nbuf->type) {
+   case NATIVE_BUFFER_DRM:
+      {
+         struct winsys_handle wsh;
+
+         if ((nbuf->u.drm.templ.bind & res->bind) != nbuf->u.drm.templ.bind)
+            break;
+
+         memset(&wsh, 0, sizeof(wsh));
+         wsh.type = DRM_API_HANDLE_TYPE_KMS;
+         if (!screen->resource_get_handle(screen, res, &wsh))
+            break;
+
+         nbuf->u.drm.handle = wsh.handle;
+         nbuf->u.drm.stride = wsh.stride;
+
+         /* get the name of the GEM object */
+         if (nbuf->u.drm.templ.bind & PIPE_BIND_SHARED) {
+            memset(&wsh, 0, sizeof(wsh));
+            wsh.type = DRM_API_HANDLE_TYPE_SHARED;
+            if (!screen->resource_get_handle(screen, res, &wsh))
+               break;
+
+            nbuf->u.drm.name = wsh.handle;
+         }
+
+         nbuf->u.drm.templ = *res;
+         ret = TRUE;
+      }
+      break;
+   default:
+      break;
+   }
+
+   return ret;
+}