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glextensions.cpp

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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

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