Add support for fp40 with opengl

--HG--
branch : multipass-stereo

code/nel/include/nel/3d/driver.h

@@ -155,9 +155,9 @@ public:
 
 		// opengl - 0x0610,bitfield
 		arbfp1 = 0x06100001, // ARB_fragment_program
-		// fp20 = 0x061B0002, 
+		// fp20 = 0x061B0002, // very limited and outdated, unnecessary
-		fp30 = 0x06100004, // NV_fragment_program
+		// fp30 = 0x06100004, // NV_fragment_program, now arbfp1, redundant
-		fp40 = 0x06100008, // NV_fragment_program2
+		fp40 = 0x06100008, // NV_fragment_program2, arbfp1 with "OPTION NV_fragment_program2;\n"
 		gp4fp = 0x06100010, // NV_gpu_program4
 		gp5fp = 0x06100020, // NV_gpu_program5
 	};

code/nel/src/3d/driver/opengl/driver_opengl_extension.cpp

@@ -1225,6 +1225,15 @@ static bool	setupARBFragmentProgram(const char *glext)
 	return true;
 }
 
+// *********************************
+static bool	setupNVFragmentProgram2(const char *glext)
+{
+	H_AUTO_OGL(setupNVFragmentProgram2);
+	CHECK_EXT("GL_NV_fragment_program2");
+	
+	return true;
+}
+
 // ***************************************************************************
 static bool	setupARBVertexBufferObject(const char	*glext)
 {
@@ -1566,10 +1575,12 @@ void	registerGlExtensions(CGlExtensions &ext)
 	if (!ext.DisableHardwarePixelProgram)
 	{		
 		ext.ARBFragmentProgram = setupARBFragmentProgram(glext);	
+		ext.NVFragmentProgram2 = setupNVFragmentProgram2(glext);
 	}
 	else
 	{
 		ext.ARBFragmentProgram = false;
+		ext.NVFragmentProgram2 = false;
 	}
 
 	ext.OESDrawTexture = setupOESDrawTexture(glext);
@@ -1582,14 +1593,12 @@ void	registerGlExtensions(CGlExtensions &ext)
 		ext.NVTextureShader = setupNVTextureShader(glext);
 		ext.ATIEnvMapBumpMap = setupATIEnvMapBumpMap(glext);
 		ext.ATIFragmentShader = setupATIFragmentShader(glext);
-		ext.ARBFragmentProgram = setupARBFragmentProgram(glext);
 	}
 	else
 	{
 		ext.ATIEnvMapBumpMap = false;
 		ext.NVTextureShader = false;
 		ext.ATIFragmentShader = false;
-		ext.ARBFragmentProgram = false;
 	}
 
 	// For now, the only way to know if emulation, is to test some extension which exist only on GeForce3.

code/nel/src/3d/driver/opengl/driver_opengl_extension.h

@@ -103,6 +103,9 @@ struct	CGlExtensions
 	bool	ARBTextureNonPowerOfTwo;
 	bool	ARBMultisample;
 
+	// NV Pixel Programs
+	bool	NVFragmentProgram2;
+
 	bool	OESDrawTexture;
 	bool	OESMapBuffer;
 
@@ -208,6 +211,7 @@ public:
 		result += NVTextureShader ? "NVTextureShader " : "";
 		result += ATIFragmentShader ? "ATIFragmentShader " : "";
 		result += ARBFragmentProgram ? "ARBFragmentProgram " : "";
+		result += NVFragmentProgram2 ? "NVFragmentProgram2 " : "";
 		result += ARBVertexProgram ? "ARBVertexProgram " : "";
 		result += NVVertexProgram ? "NVVertexProgram " : "";
 		result += EXTVertexShader ? "EXTVertexShader " : "";

code/nel/src/3d/driver/opengl/driver_opengl_pixel_program.cpp

@@ -71,7 +71,13 @@ bool CDriverGL::isPixelProgramSupported() const
 bool CDriverGL::isPixelProgramSupported(TPixelProgramProfile profile) const
 {
 	H_AUTO_OGL(CPixelProgamDrvInfosGL_isPixelProgramSupported_profile)
-	return profile == arbfp1 && _Extensions.ARBFragmentProgram;
+	switch (profile)
+	{
+	case arbfp1:
+		return _Extensions.ARBFragmentProgram;
+	case fp40:
+		return _Extensions.NVFragmentProgram2;
+	}
 }
 
 // ***************************************************************************

code/snowballs2/client/src/commands.cpp

@@ -304,6 +304,16 @@ void	initCommands()
 		"MOV result.color.xzw, c[0].xyyx;\n"
 		"TEX result.color.y, fragment.texcoord[0], texture[0], 2D;\n"
 		"END\n";
+	static const char *program_fp40 =
+		"!!ARBfp1.0\n"
+		"OPTION NV_fragment_program2;\n"
+		"PARAM c[1] = { { 1, 0 } };\n"
+		"TEMP RC;\n"
+		"TEMP HC;\n"
+		"OUTPUT oCol = result.color;\n"
+		"MOVR  oCol.xzw, c[0].xyyx;\n"
+		"TEX   oCol.y, fragment.texcoord[0], texture[0], 2D;\n"
+		"END\n";
 	static const char *program_ps_1_1 = 
 		"ps.1.1\n"
 		"def c0, 0.000000, 0.000000, 1.000000, 0.000000\n"
@@ -329,7 +339,12 @@ void	initCommands()
 		"mov oC0.xzw, c0.xyyx\n"
 		"texld oC0.y, v0, s0\n";
 	NL3D::IDriver *d = dynamic_cast<NL3D::CDriverUser *>(Driver)->getDriver();
-	if (d->isPixelProgramSupported(IDriver::arbfp1))
+	if (d->isPixelProgramSupported(IDriver::fp40))
+	{
+		nldebug("fp40");
+		a_DevPixelProgram = new CPixelProgram(program_fp40);
+	}
+	else if (d->isPixelProgramSupported(IDriver::arbfp1))
 	{
 		nldebug("arbfp1");
 		a_DevPixelProgram = new CPixelProgram(program_arbfp1);