replicant-frameworks_native/opengl/libs/egl_impl.h
Alistair Strachan 89301eaf21 Fix EGL shim extension injection for GL ES 3 drivers.
The Android EGL shim injects GL_EXT_debug_marker into the ES driver
EXTENSIONS string for the OpenGL ES 1.x and 2.0/3.0/3.1 drivers if
the extension is not already provided. This feature is used by
GLES_trace.

In Open GL ES 3.0 it became possible to query an indexed version of
the EXTENSIONS string via GetStringi(). NUM_EXTENSIONS Gets were
also added to the specification (taken from Open GL).

If the shim does not have to inject the extension, then there is no
problem, as glGetString() and glGetStringi() / NUM_EXTENSIONS will
be consistent. However, if the Android EGL shim injects the
extension, NUM_EXTENSIONS and GetStringi() will report one less
extension than is really available.

Consistency between these methods is tested by the dEQP framework
with the dEQP-GLES3.functional.state_query.string.extensions test.
If the driver does not provide GL_EXT_debug_marker, this test
fails.

This change wraps all of the affected entry points so that the
wrapped driver extensions are never visible directly to dEQP,
eliminating the inconsistency.
2015-05-28 15:34:31 -07:00

42 lines
1.4 KiB
C++

/*
** Copyright 2007, 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 ANDROID_EGL_IMPL_H
#define ANDROID_EGL_IMPL_H
#include <ctype.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <EGL/eglplatform.h>
#include "hooks.h"
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
EGLAPI const GLubyte * egl_get_string_for_current_context(GLenum name);
EGLAPI const GLubyte * egl_get_string_for_current_context(GLenum name,
GLuint index);
EGLAPI GLint egl_get_num_extensions_for_current_context();
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------
#endif /* ANDROID_EGL_IMPL_H */