From f9752cc4cf4e4f36eaa6f19f607957b9eb496bc4 Mon Sep 17 00:00:00 2001
From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Date: Tue, 21 Aug 2012 22:22:02 -0700
Subject: egl: Reintroduce eglGetRenderBufferANDROID

eglGetRenderBufferANDROID was removed as it had no users. This commit
reintroduces this extensions as it's used by Qualcomm graphics HAL.

Change-Id: I493306830a0d4f8722a42bcc84fb49236afdabeb
---
 opengl/libagl/egl.cpp | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'opengl/libagl/egl.cpp')

diff --git a/opengl/libagl/egl.cpp b/opengl/libagl/egl.cpp
index c31aebf282..232c84ffac 100644
--- a/opengl/libagl/egl.cpp
+++ b/opengl/libagl/egl.cpp
@@ -165,6 +165,7 @@ struct egl_surface_t
     virtual     EGLint      getSwapBehavior() const;
     virtual     EGLBoolean  swapBuffers();
     virtual     EGLBoolean  setSwapRectangle(EGLint l, EGLint t, EGLint w, EGLint h);
+    virtual     EGLClientBuffer getRenderBuffer() const;
 protected:
     GGLSurface              depth;
 };
@@ -208,6 +209,9 @@ EGLBoolean egl_surface_t::setSwapRectangle(
 {
     return EGL_FALSE;
 }
+EGLClientBuffer egl_surface_t::getRenderBuffer() const {
+    return 0;
+}
 
 // ----------------------------------------------------------------------------
 
@@ -233,6 +237,7 @@ struct egl_window_surface_v2_t : public egl_surface_t
     virtual     EGLint      getRefreshRate() const;
     virtual     EGLint      getSwapBehavior() const;
     virtual     EGLBoolean  setSwapRectangle(EGLint l, EGLint t, EGLint w, EGLint h);
+    virtual     EGLClientBuffer  getRenderBuffer() const;
     
 private:
     status_t lock(ANativeWindowBuffer* buf, int usage, void** vaddr);
@@ -571,6 +576,11 @@ EGLBoolean egl_window_surface_v2_t::setSwapRectangle(
     return EGL_TRUE;
 }
 
+EGLClientBuffer egl_window_surface_v2_t::getRenderBuffer() const
+{
+    return buffer;
+}
+
 EGLBoolean egl_window_surface_v2_t::bindDrawSurface(ogles_context_t* gl)
 {
     GGLSurface buffer;
@@ -801,6 +811,7 @@ static char const * const gExtensionsString =
         // "KHR_image_pixmap "
         "EGL_ANDROID_image_native_buffer "
         "EGL_ANDROID_swap_rectangle "
+        "EGL_ANDROID_get_render_buffer "
         ;
 
 // ----------------------------------------------------------------------------
@@ -861,6 +872,8 @@ static const extention_map_t gExtentionMap[] = {
             (__eglMustCastToProperFunctionPointerType)&eglGetSyncAttribKHR },
     { "eglSetSwapRectangleANDROID", 
             (__eglMustCastToProperFunctionPointerType)&eglSetSwapRectangleANDROID }, 
+    { "eglGetRenderBufferANDROID",
+        (__eglMustCastToProperFunctionPointerType)&eglGetRenderBufferANDROID },
 };
 
 /*
@@ -2154,3 +2167,18 @@ EGLBoolean eglSetSwapRectangleANDROID(EGLDisplay dpy, EGLSurface draw,
 
     return EGL_TRUE;
 }
+
+EGLClientBuffer eglGetRenderBufferANDROID(EGLDisplay dpy, EGLSurface draw)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, (EGLClientBuffer)0);
+
+    egl_surface_t* d = static_cast<egl_surface_t*>(draw);
+    if (!d->isValid())
+        return setError(EGL_BAD_SURFACE, (EGLClientBuffer)0);
+    if (d->dpy != dpy)
+        return setError(EGL_BAD_DISPLAY, (EGLClientBuffer)0);
+
+    // post the surface
+    return d->getRenderBuffer();
+}
-- 
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