From 2f87b7542f7e56e61850ea0b99d8fe5ff0e88273 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fredrik=20H=C3=B6glund?= <fredrik@kde.org>
Date: Sun, 19 May 2013 16:17:41 +0200
Subject: [PATCH] kwin/es: Resolve functions for GL_EXT_robustness

---
 libkwineffects/kwinglutils_funcs.cpp | 18 ++++++++++++++++++
 libkwineffects/kwinglutils_funcs.h   |  9 +++++++++
 2 files changed, 27 insertions(+)

diff --git a/libkwineffects/kwinglutils_funcs.cpp b/libkwineffects/kwinglutils_funcs.cpp
index 234c62c4d6..ce31749903 100644
--- a/libkwineffects/kwinglutils_funcs.cpp
+++ b/libkwineffects/kwinglutils_funcs.cpp
@@ -276,6 +276,13 @@ eglPostSubBufferNV_func eglPostSubBufferNV;
 // GLES
 glEGLImageTargetTexture2DOES_func glEGLImageTargetTexture2DOES;
 
+#ifdef KWIN_HAVE_OPENGLES
+// GL_EXT_robustness
+glGetGraphicsResetStatus_func glGetGraphicsResetStatus;
+glReadnPixels_func            glReadnPixels;
+glGetnUniformfv_func          glGetnUniformfv;
+#endif
+
 void eglResolveFunctions()
 {
     if (hasGLExtension("EGL_KHR_image") ||
@@ -710,6 +717,17 @@ void glResolveFunctions(OpenGLPlatformInterface platformInterface)
         glFlushMappedBufferRange = NULL;
     }
 
+    if (hasGLExtension("GL_EXT_robustness")) {
+        // See http://www.khronos.org/registry/gles/extensions/EXT/EXT_robustness.txt
+        glGetGraphicsResetStatus = (glGetGraphicsResetStatus_func) eglGetProcAddress("glGetGraphicsResetStatusEXT");
+        glReadnPixels            = (glReadnPixels_func)            eglGetProcAddress("glReadnPixelsEXT");
+        glGetnUniformfv          = (glGetnUniformfv_func)          eglGetProcAddress("glGetnUniformfvEXT");
+    } else {
+        glGetGraphicsResetStatus = KWin::GetGraphicsResetStatus;
+        glReadnPixels            = KWin::ReadnPixels;
+        glGetnUniformfv          = KWin::GetnUniformfv;
+    }
+
 #endif // KWIN_HAVE_OPENGLES
 
 #ifdef KWIN_HAVE_EGL
diff --git a/libkwineffects/kwinglutils_funcs.h b/libkwineffects/kwinglutils_funcs.h
index 9e68a5eb0a..ea123b1b72 100644
--- a/libkwineffects/kwinglutils_funcs.h
+++ b/libkwineffects/kwinglutils_funcs.h
@@ -548,6 +548,15 @@ typedef void (*glFlushMappedBufferRange_func)(GLenum target, GLintptr offset, GL
 extern KWIN_EXPORT glMapBufferRange_func         glMapBufferRange;
 extern KWIN_EXPORT glFlushMappedBufferRange_func glFlushMappedBufferRange;
 
+// GL_EXT_robustness
+typedef GLenum (*glGetGraphicsResetStatus_func)();
+typedef void (*glReadnPixels_func)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize, GLvoid *data);
+typedef void (*glGetnUniformfv_func)(GLuint program, GLint location, GLsizei bufSize, GLfloat *params);
+
+extern KWIN_EXPORT glGetGraphicsResetStatus_func glGetGraphicsResetStatus;
+extern KWIN_EXPORT glReadnPixels_func            glReadnPixels;
+extern KWIN_EXPORT glGetnUniformfv_func          glGetnUniformfv;
+
 #endif // KWIN_HAVE_OPENGLES
 
 } // namespace