From dd52a05d02b40b537d117d593a497cf08d17e442 Mon Sep 17 00:00:00 2001
From: kaetemi <kaetemi@gmail.com>
Date: Sat, 21 Jun 2014 06:41:14 +0200
Subject: [PATCH] Don't enforce native fragment programs on modern hardware.
 Fixes water for the open source ATI/AMD driver, which reports fragment
 programs as not native (as they are translated to modern hardware).

---
 code/nel/src/3d/driver/opengl/driver_opengl.cpp      |  5 +++++
 .../src/3d/driver/opengl/driver_opengl_extension.cpp | 12 +++++++++++-
 .../src/3d/driver/opengl/driver_opengl_extension.h   |  2 ++
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/code/nel/src/3d/driver/opengl/driver_opengl.cpp b/code/nel/src/3d/driver/opengl/driver_opengl.cpp
index 3d6031caf..eb59f2205 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl.cpp
@@ -483,6 +483,11 @@ bool CDriverGL::setupDisplay()
 		glLightModeli((GLenum)GL_LIGHT_MODEL_COLOR_CONTROL_EXT, GL_SEPARATE_SPECULAR_COLOR_EXT);
 #endif
 	}
+	
+	if (_Extensions.ARBFragmentShader)
+	{
+		_ForceNativeFragmentPrograms = false;
+	}
 
 	_VertexProgramEnabled= false;
 	_PixelProgramEnabled= false;
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_extension.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_extension.cpp
index 515d553aa..aee3e74bb 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_extension.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_extension.cpp
@@ -1249,6 +1249,15 @@ static bool	setupNVFragmentProgram2(const char *glext)
 	return true;
 }
 
+// *********************************
+static bool	setupARBFragmentShader(const char *glext)
+{
+	H_AUTO_OGL(setupNVFragmentProgram2);
+	CHECK_EXT("GL_ARB_fragment_shader");
+	
+	return true;
+}
+
 // ***************************************************************************
 static bool	setupARBVertexBufferObject(const char	*glext)
 {
@@ -1627,7 +1636,7 @@ void	registerGlExtensions(CGlExtensions &ext)
 	{
 		ext.NVVertexProgram = setupNVVertexProgram(glext);
 		ext.EXTVertexShader = setupEXTVertexShader(glext);
-		ext.ARBVertexProgram= setupARBVertexProgram(glext);
+		ext.ARBVertexProgram = setupARBVertexProgram(glext);
 	}
 	else
 	{
@@ -1642,6 +1651,7 @@ void	registerGlExtensions(CGlExtensions &ext)
 	{		
 		ext.ARBFragmentProgram = setupARBFragmentProgram(glext);	
 		ext.NVFragmentProgram2 = setupNVFragmentProgram2(glext);
+		ext.ARBFragmentShader = setupARBFragmentShader(glext);
 	}
 	else
 	{
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_extension.h b/code/nel/src/3d/driver/opengl/driver_opengl_extension.h
index 07599366c..dba5facfb 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_extension.h
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_extension.h
@@ -104,6 +104,7 @@ struct	CGlExtensions
 	bool	ARBVertexProgram;
 	bool	ARBTextureNonPowerOfTwo;
 	bool	ARBMultisample;
+	bool	ARBFragmentShader;
 
 	// NV Pixel Programs
 	bool	NVFragmentProgram2;
@@ -178,6 +179,7 @@ public:
 		ARBTextureRectangle = false;
 		ARBTextureNonPowerOfTwo = false;
 		ARBMultisample = false;
+		ARBFragmentShader = false;
 		NVOcclusionQuery = false;
 		ARBOcclusionQuery = false;
 		FrameBufferObject = false;