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//
// Copyright 2017 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// ClearMultiviewGL:
// A helper for clearing multiview side-by-side and layered framebuffers.
//
#ifndef LIBANGLE_RENDERER_GL_CLEARMULTIVIEWGL_H_
#define LIBANGLE_RENDERER_GL_CLEARMULTIVIEWGL_H_
#include "angle_gl.h"
#include "libANGLE/Error.h"
#include "libANGLE/angletypes.h"
namespace gl
{
class FramebufferState;
} // namespace gl
namespace rx
{
class FunctionsGL;
class StateManagerGL;
class ClearMultiviewGL : angle::NonCopyable
{
public:
// Enum containing the different types of Clear* commands.
enum class ClearCommandType
{
Clear,
ClearBufferfv,
ClearBufferuiv,
ClearBufferiv,
ClearBufferfi
};
public:
ClearMultiviewGL(const FunctionsGL *functions, StateManagerGL *stateManager);
~ClearMultiviewGL();
ClearMultiviewGL(const ClearMultiviewGL &rht) = delete;
ClearMultiviewGL &operator=(const ClearMultiviewGL &rht) = delete;
ClearMultiviewGL(ClearMultiviewGL &&rht) = delete;
ClearMultiviewGL &operator=(ClearMultiviewGL &&rht) = delete;
void clearMultiviewFBO(const gl::FramebufferState &state,
const gl::Rectangle &scissorBase,
ClearCommandType clearCommandType,
GLbitfield mask,
GLenum buffer,
GLint drawbuffer,
const uint8_t *values,
GLfloat depth,
GLint stencil);
void initializeResources();
private:
void attachTextures(const gl::FramebufferState &state, int layer);
void detachTextures(const gl::FramebufferState &state);
void clearLayeredFBO(const gl::FramebufferState &state,
ClearCommandType clearCommandType,
GLbitfield mask,
GLenum buffer,
GLint drawbuffer,
const uint8_t *values,
GLfloat depth,
GLint stencil);
void genericClear(ClearCommandType clearCommandType,
GLbitfield mask,
GLenum buffer,
GLint drawbuffer,
const uint8_t *values,
GLfloat depth,
GLint stencil);
const FunctionsGL *mFunctions;
StateManagerGL *mStateManager;
GLuint mFramebuffer;
};
} // namespace rx
#endif // LIBANGLE_RENDERER_GL_CLEARMULTIVIEWGL_H_