commit f4490e220717ee3bdae77a14d1b5d16360190439
author apatrick@chromium.org <apatrick@chromium.org@736b8ea6-26fd-11df-bfd4-992fa37f6226> Tue Dec 06 02:05:22 2011 +0000
committer apatrick@chromium.org <apatrick@chromium.org@736b8ea6-26fd-11df-bfd4-992fa37f6226> Tue Dec 06 02:05:22 2011 +0000
tree f5e91d03e315bcad07e885f1f7b4ba1005b4f9fd
parent 343373abf680902a2ede4e0f15f459b6f99f1eb0

Implemented EGL_NV_post_sub_buffer.

The change to the sample is just to demonstrate how I tested it. I won't check in the stuff under samples/.

It's not clear to me what eglPostSubBufferNV should do if EGL_POST_SUB_BUFFER_SUPPORTED_NV is false. At the moment it fails silently as though it was called on the wrong surface type:

 "If <surface> is a back-buffered surface, then the requested portion
    of the color buffer is copied to the native window associated with
    that surface. If <surface> is a single-buffered window, pixmap, or
    pbuffer surface, eglSwapBuffers and eglPostSubBufferNV have no
    effect."
Review URL: http://codereview.appspot.com/5345050

git-svn-id: https://angleproject.googlecode.com/svn/trunk@902 736b8ea6-26fd-11df-bfd4-992fa37f6226

src/libEGL/Display.cpp

diff --git a/src/libEGL/Display.cpp b/src/libEGL/Display.cpp
index c7d38b8..4f1e7c2 100644
--- a/src/libEGL/Display.cpp
+++ b/src/libEGL/Display.cpp
@@ -503,6 +503,7 @@
 EGLSurface Display::createWindowSurface(HWND window, EGLConfig config, const EGLint *attribList)
 {
     const Config *configuration = mConfigSet.get(config);
+    EGLint postSubBufferSupported = EGL_FALSE;
 
     if (attribList)
     {
@@ -521,6 +522,9 @@
                     return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
                 }
                 break;
+              case EGL_POST_SUB_BUFFER_SUPPORTED_NV:
+                postSubBufferSupported = attribList[1];
+                break;
               case EGL_VG_COLORSPACE:
                 return error(EGL_BAD_MATCH, EGL_NO_SURFACE);
               case EGL_VG_ALPHA_FORMAT:
@@ -544,7 +548,7 @@
             return EGL_NO_SURFACE;
     }
 
-    Surface *surface = new Surface(this, configuration, window);
+    Surface *surface = new Surface(this, configuration, window, postSubBufferSupported);
 
     if (!surface->initialize())
     {
@@ -1039,7 +1043,8 @@
     mExtensionString += "EGL_EXT_create_context_robustness ";
 
     // ANGLE-specific extensions
-    if (isd3d9ex) {
+    if (isd3d9ex)
+    {
         mExtensionString += "EGL_ANGLE_d3d_share_handle_client_buffer ";
     }
 
@@ -1047,13 +1052,16 @@
 
     if (swiftShader)
     {
-      mExtensionString += "EGL_ANGLE_software_display ";
+        mExtensionString += "EGL_ANGLE_software_display ";
     }
 
-    if (isd3d9ex) {
+    if (isd3d9ex)
+    {
         mExtensionString += "EGL_ANGLE_surface_d3d_texture_2d_share_handle ";
     }
 
+    mExtensionString += "EGL_NV_post_sub_buffer";
+
     std::string::size_type end = mExtensionString.find_last_not_of(' ');
     if (end != std::string::npos)
     {