[Mesa-dev] [PATCH 1/3] egl: add EGL_NV_post_sub_buffer

[Fredrik Höglund]

Signed-off-by: Fredrik Höglund <fredrik at kde.org>
---
 include/EGL/eglext.h      |    9 +++++++++
 src/egl/main/eglapi.c     |   24 ++++++++++++++++++++++++
 src/egl/main/eglapi.h     |    8 ++++++++
 src/egl/main/egldisplay.h |    2 ++
 src/egl/main/eglmisc.c    |    2 ++
 src/egl/main/eglsurface.c |    9 +++++++++
 src/egl/main/eglsurface.h |    4 ++++
 7 files changed, 58 insertions(+), 0 deletions(-)

diff --git a/include/EGL/eglext.h b/include/EGL/eglext.h
index 9484b83..d03a24d 100644
--- a/include/EGL/eglext.h
+++ b/include/EGL/eglext.h
@@ -144,6 +144,15 @@ typedef EGLImageKHR (EGLAPIENTRYP PFNEGLCREATEDRMIMAGEMESA) (EGLDisplay dpy, con
 typedef EGLBoolean (EGLAPIENTRYP PFNEGLEXPORTDRMIMAGEMESA) (EGLDisplay dpy, EGLImageKHR image, EGLint *name, EGLint *handle, EGLint *stride);
 #endif
 
+#ifndef EGL_NV_post_sub_buffer
+#define EGL_NV_post_sub_buffer 1
+#define EGL_POST_SUB_BUFFER_SUPPORTED_NV	0x30BE
+#ifdef EGL_EGLEXT_PROTOTYPES
+EGLAPI EGLBoolean EGLAPIENTRY eglPostSubBufferNV(EGLDisplay dpy, EGLSurface surface, EGLint x, EGLint y, EGLint width, EGLint height);
+#endif /* EGL_EGLEXT_PROTOTYPES */
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLPOSTSUBBUFFERNVPROC) (EGLDisplay dpy, EGLSurface surface, EGLint x, EGLint y, EGLint width, EGLint height);
+#endif
+
 #ifndef EGL_WL_bind_wayland_display
 #define EGL_WL_bind_wayland_display 1
 
diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index 3cb1a5b..ff15476 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -951,6 +951,9 @@ eglGetProcAddress(const char *procname)
 #ifdef EGL_ANDROID_swap_rectangle
       { "eglSetSwapRectangleANDROID", (_EGLProc) eglSetSwapRectangleANDROID },
 #endif
+#ifdef EGL_NV_post_sub_buffer
+      { "eglPostSubBufferNV", (_EGLProc) eglPostSubBufferNV },
+#endif
       { NULL, NULL }
    };
    EGLint i;
@@ -1590,3 +1593,24 @@ eglSetSwapRectangleANDROID(EGLDisplay dpy, EGLSurface draw,
    RETURN_EGL_EVAL(disp, ret);
 }
 #endif
+
+#ifdef EGL_NV_post_sub_buffer
+EGLBoolean EGLAPIENTRY
+eglPostSubBufferNV(EGLDisplay dpy, EGLSurface surface,
+                   EGLint x, EGLint y, EGLint width, EGLint height)
+{
+   _EGLDisplay *disp = _eglLockDisplay(dpy);
+   _EGLSurface *surf = _eglLookupSurface(surface, disp);
+   _EGLDriver *drv;
+   EGLBoolean ret;
+
+   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);
+
+   if (!disp->Extensions.NV_post_sub_buffer)
+      RETURN_EGL_EVAL(disp, EGL_FALSE);
+
+   ret = drv->API.PostSubBufferNV(drv, disp, surf, x, y, width, height);
+
+   RETURN_EGL_EVAL(disp, ret);
+}
+#endif
diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h
index 1e0aef6..f374273 100644
--- a/src/egl/main/eglapi.h
+++ b/src/egl/main/eglapi.h
@@ -135,6 +135,10 @@ typedef EGLBoolean (*UnbindWaylandDisplayWL_t)(_EGLDriver *drv, _EGLDisplay *dis
 typedef EGLBoolean (*SetSwapRectangleANDROID_t)(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw, EGLint left, EGLint top, EGLint width, EGLint height);
 #endif
 
+#ifdef EGL_NV_post_sub_buffer
+typedef EGLBoolean (*PostSubBufferNV_t)(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surface, EGLint x, EGLint y, EGLint width, EGLint height);
+#endif
+
 /**
  * The API dispatcher jumps through these functions
  */
@@ -218,6 +222,10 @@ struct _egl_api
 #ifdef EGL_ANDROID_swap_rectangle
    SetSwapRectangleANDROID_t SetSwapRectangleANDROID;
 #endif
+
+#ifdef EGL_NV_post_sub_buffer
+   PostSubBufferNV_t PostSubBufferNV;
+#endif
 };
 
 #endif /* EGLAPI_INCLUDED */
diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index 67a2e24..8f737df 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -112,6 +112,8 @@ struct _egl_extensions
 
    EGLBoolean ANDROID_image_native_buffer;
    EGLBoolean ANDROID_swap_rectangle;
+
+   EGLBoolean NV_post_sub_buffer;
 };
 
 
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c
index ab48bc6..30cd04e 100644
--- a/src/egl/main/eglmisc.c
+++ b/src/egl/main/eglmisc.c
@@ -116,6 +116,8 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
 
    _EGL_CHECK_EXTENSION(ANDROID_image_native_buffer);
    _EGL_CHECK_EXTENSION(ANDROID_swap_rectangle);
+
+   _EGL_CHECK_EXTENSION(NV_post_sub_buffer);
 #undef _EGL_CHECK_EXTENSION
 }
 
diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
index 3564ecd..92edff5 100644
--- a/src/egl/main/eglsurface.c
+++ b/src/egl/main/eglsurface.c
@@ -323,6 +323,10 @@ _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
    surf->VerticalResolution = EGL_UNKNOWN;
    surf->AspectRatio = EGL_UNKNOWN;
 
+#ifdef EGL_NV_post_sub_buffer
+   surf->PostSubBufferSupportedNV = EGL_FALSE;
+#endif
+
    /* the default swap interval is 1 */
    _eglClampSwapInterval(surf, 1);
 
@@ -392,6 +396,11 @@ _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
    case EGL_VG_COLORSPACE:
       *value = surface->VGColorspace;
       break;
+#ifdef EGL_NV_post_sub_buffer
+   case EGL_POST_SUB_BUFFER_SUPPORTED_NV:
+      *value = surface->PostSubBufferSupportedNV;
+      break;
+#endif
    default:
       _eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
       return EGL_FALSE;
diff --git a/src/egl/main/eglsurface.h b/src/egl/main/eglsurface.h
index 0541ff4..7b774da 100644
--- a/src/egl/main/eglsurface.h
+++ b/src/egl/main/eglsurface.h
@@ -73,6 +73,10 @@ struct _egl_surface
 
    /* True if the surface is bound to an OpenGL ES texture */
    EGLBoolean BoundToTexture;
+
+#ifdef EGL_NV_post_sub_buffer
+   EGLBoolean PostSubBufferSupportedNV;
+#endif
 };
 
 
-- 
1.7.7.3