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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
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#include "glextensions.h"

#define RESOLVE_GL_FUNC(f) ok &= bool((f = (_gl##f) context->getProcAddress(QLatin1String("gl" #f))));

bool GLExtensionFunctions::resolve(const QGLContext *context)
{
	bool ok = true;

	RESOLVE_GL_FUNC(CreateShaderObjectARB)
	RESOLVE_GL_FUNC(ShaderSourceARB)
	RESOLVE_GL_FUNC(CompileShaderARB)
	RESOLVE_GL_FUNC(GetObjectParameterivARB)
	RESOLVE_GL_FUNC(DeleteObjectARB)
	RESOLVE_GL_FUNC(GetInfoLogARB)
	RESOLVE_GL_FUNC(CreateProgramObjectARB)
	RESOLVE_GL_FUNC(AttachObjectARB)
	RESOLVE_GL_FUNC(DetachObjectARB)
	RESOLVE_GL_FUNC(LinkProgramARB)
	RESOLVE_GL_FUNC(UseProgramObjectARB)
	RESOLVE_GL_FUNC(GetUniformLocationARB)
	RESOLVE_GL_FUNC(Uniform1iARB)
	RESOLVE_GL_FUNC(Uniform1fARB)
	RESOLVE_GL_FUNC(Uniform4fARB)
	RESOLVE_GL_FUNC(UniformMatrix4fvARB)

	RESOLVE_GL_FUNC(GenFramebuffersEXT)
	RESOLVE_GL_FUNC(GenRenderbuffersEXT)
	RESOLVE_GL_FUNC(BindRenderbufferEXT)
	RESOLVE_GL_FUNC(RenderbufferStorageEXT)
	RESOLVE_GL_FUNC(DeleteFramebuffersEXT)
	RESOLVE_GL_FUNC(DeleteRenderbuffersEXT)
	RESOLVE_GL_FUNC(BindFramebufferEXT)
	RESOLVE_GL_FUNC(FramebufferTexture2DEXT)
	RESOLVE_GL_FUNC(FramebufferRenderbufferEXT)
	RESOLVE_GL_FUNC(CheckFramebufferStatusEXT)

        RESOLVE_GL_FUNC(ActiveTexture)
	RESOLVE_GL_FUNC(TexImage3D)

        RESOLVE_GL_FUNC(GenBuffers)
	RESOLVE_GL_FUNC(BindBuffer)
	RESOLVE_GL_FUNC(BufferData)
	RESOLVE_GL_FUNC(DeleteBuffers)
	RESOLVE_GL_FUNC(MapBuffer)
	RESOLVE_GL_FUNC(UnmapBuffer)

	return ok;
}

bool GLExtensionFunctions::glslSupported() {
    return CreateShaderObjectARB
	    && CreateShaderObjectARB
	    && ShaderSourceARB
	    && CompileShaderARB
	    && GetObjectParameterivARB
	    && DeleteObjectARB
	    && GetInfoLogARB
	    && CreateProgramObjectARB
	    && AttachObjectARB
	    && DetachObjectARB
	    && LinkProgramARB
	    && UseProgramObjectARB
	    && GetUniformLocationARB
	    && Uniform1iARB
	    && Uniform1fARB
	    && Uniform4fARB
            && UniformMatrix4fvARB;
}

bool GLExtensionFunctions::fboSupported() {
    return GenFramebuffersEXT
	    && GenRenderbuffersEXT
	    && BindRenderbufferEXT
	    && RenderbufferStorageEXT
	    && DeleteFramebuffersEXT
	    && DeleteRenderbuffersEXT
	    && BindFramebufferEXT
	    && FramebufferTexture2DEXT
	    && FramebufferRenderbufferEXT
	    && CheckFramebufferStatusEXT;
}

bool GLExtensionFunctions::openGL15Supported() {
    return ActiveTexture
	    && TexImage3D
            && GenBuffers
	    && BindBuffer
	    && BufferData
	    && DeleteBuffers
	    && MapBuffer
	    && UnmapBuffer;
}

#undef RESOLVE_GL_FUNC