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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_
#define MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_
#include <stddef.h>
#include "mojo/public/c/gles2/gles2.h"
// Structure used to bind the interface which manipulates GLES2 surfaces to a
// DSO to theose of the embedder.
//
// This is the ABI between the embedder and the DSO. It can only have new
// functions added to the end. No other changes are supported.
#pragma pack(push, 8)
struct MojoGLES2ControlThunks {
size_t size; // Should be set to sizeof(MojoGLES2ControlThunks).
MojoGLES2Context (*GLES2CreateContext)(MojoHandle handle,
MojoGLES2ContextLost lost_callback,
void* closure,
const MojoAsyncWaiter* async_waiter);
void (*GLES2DestroyContext)(MojoGLES2Context context);
void (*GLES2MakeCurrent)(MojoGLES2Context context);
void (*GLES2SwapBuffers)();
// TODO(piman): We shouldn't have to leak these 2 interfaces, especially in a
// type-unsafe way.
void* (*GLES2GetGLES2Interface)(MojoGLES2Context context);
void* (*GLES2GetContextSupport)(MojoGLES2Context context);
};
#pragma pack(pop)
// Intended to be called from the embedder. Returns an object initialized to
// contain pointers to each of the embedder's MojoGLES2ControlThunks functions.
inline MojoGLES2ControlThunks MojoMakeGLES2ControlThunks() {
MojoGLES2ControlThunks gles2_control_thunks = {
sizeof(MojoGLES2ControlThunks),
MojoGLES2CreateContext,
MojoGLES2DestroyContext,
MojoGLES2MakeCurrent,
MojoGLES2SwapBuffers,
MojoGLES2GetGLES2Interface,
MojoGLES2GetContextSupport
};
return gles2_control_thunks;
}
// Use this type for the function found by dynamically discovering it in
// a DSO linked with mojo_system. For example:
// MojoSetGLES2ControlThunksFn mojo_set_gles2_control_thunks_fn =
// reinterpret_cast<MojoSetGLES2ControlThunksFn>(
// app_library.GetFunctionPointer("MojoSetGLES2ControlThunks"));
// The expected size of |gles2_control_thunks| is returned.
// The contents of |gles2_control_thunks| are copied.
typedef size_t (*MojoSetGLES2ControlThunksFn)(
const MojoGLES2ControlThunks* gles2_control_thunks);
#endif // MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_
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