From 6425b14515e3124d6d1fe2d39fa192389aab9f85 Mon Sep 17 00:00:00 2001
From: Robert Bragg <robert@sixbynine.org>
Date: Thu, 25 Apr 2013 13:41:42 +0100
Subject: [PATCH] egl: Add extension infrastructure for
 EGL_EXT_swap_buffers_with_damage
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Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
---
 src/egl/main/eglapi.c     | 32 ++++++++++++++++++++++++++++++++
 src/egl/main/eglapi.h     |  7 +++++++
 src/egl/main/egldisplay.h |  1 +
 src/egl/main/eglmisc.c    |  1 +
 4 files changed, 41 insertions(+)

diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index bcc546557b8..4a9831bc7f1 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -701,6 +701,35 @@ eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
 }
 
 
+#ifdef EGL_EXT_swap_buffers_with_damage
+
+EGLBoolean EGLAPIENTRY
+eglSwapBuffersWithDamageEXT(EGLDisplay dpy, EGLSurface surface,
+                            EGLint *rects, EGLint n_rects)
+{
+   _EGLContext *ctx = _eglGetCurrentContext();
+   _EGLDisplay *disp = _eglLockDisplay(dpy);
+   _EGLSurface *surf = _eglLookupSurface(surface, disp);
+   _EGLDriver *drv;
+   EGLBoolean ret;
+
+   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);
+
+   /* surface must be bound to current context in EGL 1.4 */
+   if (_eglGetContextHandle(ctx) == EGL_NO_CONTEXT ||
+       surf != ctx->DrawSurface)
+      RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);
+
+   if ((n_rects > 0 && rects == NULL) || n_rects < 0)
+      RETURN_EGL_ERROR(disp, EGL_BAD_PARAMETER, EGL_FALSE);
+
+   ret = drv->API.SwapBuffersWithDamageEXT(drv, disp, surf, rects, n_rects);
+
+   RETURN_EGL_EVAL(disp, ret);
+}
+
+#endif /* EGL_EXT_swap_buffers_with_damage */
+
 EGLBoolean EGLAPIENTRY
 eglCopyBuffers(EGLDisplay dpy, EGLSurface surface, EGLNativePixmapType target)
 {
@@ -939,6 +968,9 @@ eglGetProcAddress(const char *procname)
       { "eglQueryWaylandBufferWL", (_EGLProc) eglQueryWaylandBufferWL },
 #endif
       { "eglPostSubBufferNV", (_EGLProc) eglPostSubBufferNV },
+#ifdef EGL_EXT_swap_buffers_with_damage
+      { "eglSwapBuffersWithDamageEXT", (_EGLProc) eglSwapBuffersWithDamageEXT },
+#endif
       { NULL, NULL }
    };
    EGLint i;
diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h
index 85b8f1a8db1..ee382d00e4a 100644
--- a/src/egl/main/eglapi.h
+++ b/src/egl/main/eglapi.h
@@ -131,6 +131,9 @@ typedef EGLBoolean (*PostSubBufferNV_t)(_EGLDriver *drv, _EGLDisplay *disp, _EGL
 typedef EGLint (*QueryBufferAge_t)(_EGLDriver *drv,
                                    _EGLDisplay *dpy, _EGLSurface *surface);
 
+#ifdef EGL_EXT_swap_buffers_with_damage
+typedef EGLBoolean (*SwapBuffersWithDamageEXT_t) (_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface, const EGLint *rects, EGLint n_rects);
+#endif
 
 /**
  * The API dispatcher jumps through these functions
@@ -207,6 +210,10 @@ struct _egl_api
    QueryWaylandBufferWL_t QueryWaylandBufferWL;
 #endif
 
+#ifdef EGL_EXT_swap_buffers_with_damage
+   SwapBuffersWithDamageEXT_t SwapBuffersWithDamageEXT;
+#endif /* EGL_EXT_swap_buffers_with_damage */
+
    PostSubBufferNV_t PostSubBufferNV;
 
    QueryBufferAge_t QueryBufferAge;
diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index 4b33470151b..f990300a548 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -115,6 +115,7 @@ struct _egl_extensions
 
    EGLBoolean EXT_create_context_robustness;
    EGLBoolean EXT_buffer_age;
+   EGLBoolean EXT_swap_buffers_with_damage;
 };
 
 
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c
index 92b0eae5f2a..a843ce77108 100644
--- a/src/egl/main/eglmisc.c
+++ b/src/egl/main/eglmisc.c
@@ -117,6 +117,7 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
 
    _EGL_CHECK_EXTENSION(EXT_create_context_robustness);
    _EGL_CHECK_EXTENSION(EXT_buffer_age);
+   _EGL_CHECK_EXTENSION(EXT_swap_buffers_with_damage);
 
    _EGL_CHECK_EXTENSION(NV_post_sub_buffer);
 #undef _EGL_CHECK_EXTENSION
-- 
2.30.2