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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef EGL_VALIDATE_H
#define EGL_VALIDATE_H
#include <EGL/egl.h>
class EglValidate {
public:
// Return true iff |attrib| is a valid EGLConfig attribute name.
static bool confAttrib(EGLint attrib);
// Return true iff |attrib| is NULL, or |attrib[0]| is EGL_NONE, which
// correspond to empty config attribute lists.
static bool noAttribs(const EGLint* attrib);
// Used to check that the config attributes used to create a new pbuffer
// are correct. |width| and |height| are the PBuffer's dimensions in
// pixels. |texFormatIsNoText| is true iff the PBuffer's texture format
// if EGL_NO_TEXTURE. |texTargetIsNoTex| is true iff the PBuffer's target
// is EGL_NO_TEXTURE.
static bool pbufferAttribs(EGLint width,
EGLint height,
bool texFormatIsNoTex,
bool texTargetIsNoTex);
// Return true if |ctx| is EGL_NO_CONTEXT, and both |draw| and |read|
// are EGL_NO_SURFACE. This corresponds to an eglMakeCurrent operation
// used to release the current context and draw/read surfaces at the
// same time.
static bool releaseContext(EGLContext ctx,
EGLSurface draw,
EGLSurface read);
// Return true if the values of |ctx|, |draw| and |read| do _not_ match
// the following rules:
//
// - If |ctx| is EGL_NO_CONTEXT, then |draw| and |read| must be
// EGL_NO_SURFACE.
//
// - If |ctx| is not EGL_NO_CONTEXT, then |draw| and |read| must not
// be EGL_NO_SURFACE.
//
static bool badContextMatch(EGLContext ctx,
EGLSurface draw,
EGLSurface read);
// Returns true iff |target| is either EGL_DRAW or EGL_READ.
static bool surfaceTarget(EGLint target);
// Returns true iff |engine| is EGL_CORE_NATIVE_RENDERER
static bool engine(EGLint engine);
// Returns true iff |name| is the attribute name of a string, e.g.
// EGL_VENDOR, EGL_VERSION or EGL_EXTENSIONS.
static bool stringName(EGLint name);
// Returns true iff |api| is the value of a supported API, e.g.
// EGL_OPENGL_ES_API.
static bool supportedApi(EGLenum api);
};
#endif
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