Added some more compile time checks for OpenGL support.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@785 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/COpenGLDriver.cpp

@@ -1305,9 +1305,11 @@ void COpenGLDriver::setBasicRenderStates(const SMaterial& material, const SMater
 			glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
 				(material.BilinearFilter[i] || material.TrilinearFilter[i]) ? GL_LINEAR : GL_NEAREST);
 
+#ifdef GL_EXT_texture_filter_anisotropic
 		if (AnisotropyExtension)
 			glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 				material.AnisotropicFilter[i] ? MaxAnisotropy : 1.0f );
+#endif
 	}
 
 	// fillmode

source/Irrlicht/COpenGLExtensionHandler.cpp

@@ -18,7 +18,7 @@ COpenGLExtensionHandler::COpenGLExtensionHandler() :
 		SeparateStencilExtension(false),
 		TextureCompressionExtension(false),
 		PackedDepthStencilExtension(false),
-		MaxTextureUnits(1), MaxLights(1), MaxIndices(1),
+		MaxTextureUnits(1), MaxLights(1), MaxIndices(65535),
 		MaxAnisotropy(1.0f), Version(0), ShaderLanguageVersion(0)
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	,pGlActiveTextureARB(0), pGlClientActiveTextureARB(0),
@@ -349,11 +349,20 @@ void COpenGLExtensionHandler::initExtensions(bool stencilBuffer)
 #endif // _IRR_WINDOWS_API_
 
 	// set some properties
-	glGetIntegerv(GL_MAX_TEXTURE_UNITS, &MaxTextureUnits);
+#if defined(GL_ARB_multitexture) || defined(GL_VERSION_1_3)
+	if (Version>102 || FeatureAvailable[IRR_ARB_multitexture])
+		glGetIntegerv(GL_MAX_TEXTURE_UNITS, &MaxTextureUnits);
+#endif
 	glGetIntegerv(GL_MAX_LIGHTS, &MaxLights);
-	glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &MaxAnisotropy);
-	glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &MaxIndices);
-#if defined(GL_ARB_shading_language_100) || defined (GL_VERSION_2_0)
+#ifdef GL_EXT_texture_filter_anisotropic
+	if (FeatureAvailable[IRR_EXT_texture_filter_anisotropic])
+		glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &MaxAnisotropy);
+#endif
+#ifdef GL_VERSION_1_2
+	if (Version>101)
+		glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &MaxIndices);
+#endif
+#if defined(GL_ARB_shading_language_100) || defined (GL_VERSION_2_0)
 	if (FeatureAvailable[IRR_ARB_shading_language_100] || Version>=200)
 	{
 		glGetError(); // clean error buffer
@@ -366,7 +375,7 @@ void COpenGLExtensionHandler::initExtensions(bool stencilBuffer)
 			ShaderLanguageVersion = core::floor32(ver)*100+core::ceil32((ver-floor(ver))*10.0);
 		}
 	}
-#endif
+#endif
 
 #ifdef _IRR_OPENGL_USE_EXTPOINTER_
 	if (!pGlActiveTextureARB || !pGlClientActiveTextureARB)

source/Irrlicht/COpenGLMaterialRenderer.h

@@ -73,7 +73,7 @@ public:
 	{
 		Driver->disableTextures(1);
 		Driver->setTexture(0, material.Textures[0]);
-		services->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
+		Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
 
 //		if (material.MaterialType != lastMaterial.MaterialType ||
 //			material.MaterialTypeParam != lastMaterial.MaterialTypeParam ||