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/*
Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
Copyright (C) 2014 Igalia S.L.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef BitmapTextureGL_h
#define BitmapTextureGL_h
#if USE(TEXTURE_MAPPER_GL)
#include "BitmapTexture.h"
#include "ClipStack.h"
#include "FilterOperation.h"
#include "Image.h"
#include "IntSize.h"
#include "TextureMapperContextAttributes.h"
#include "TextureMapperGL.h"
#include "TextureMapperGLHeaders.h"
namespace WebCore {
class TextureMapper;
class TextureMapperGL;
class FilterOperation;
#if OS(WINDOWS)
#define USE_TEXMAP_DEPTH_STENCIL_BUFFER 1
#else
#define USE_TEXMAP_DEPTH_STENCIL_BUFFER 0
#endif
class BitmapTextureGL : public BitmapTexture {
public:
static Ref<BitmapTexture> create(const TextureMapperContextAttributes& contextAttributes, const Flags flags = NoFlag, GLint internalFormat = GL_DONT_CARE)
{
return adoptRef(*new BitmapTextureGL(contextAttributes, flags, internalFormat));
}
virtual ~BitmapTextureGL();
IntSize size() const override;
bool isValid() const override;
void didReset() override;
void bindAsSurface();
void initializeStencil();
void initializeDepthBuffer();
virtual uint32_t id() const { return m_id; }
uint32_t textureTarget() const { return GL_TEXTURE_2D; }
IntSize textureSize() const { return m_textureSize; }
void updateContents(Image*, const IntRect&, const IntPoint&) override;
void updateContents(const void*, const IntRect& target, const IntPoint& sourceOffset, int bytesPerLine) override;
bool isBackedByOpenGL() const override { return true; }
RefPtr<BitmapTexture> applyFilters(TextureMapper&, const FilterOperations&, bool defersLastFilter) override;
struct FilterInfo {
RefPtr<FilterOperation> filter;
unsigned pass;
RefPtr<BitmapTexture> contentTexture;
FilterInfo(RefPtr<FilterOperation>&& f = nullptr, unsigned p = 0, RefPtr<BitmapTexture>&& t = nullptr)
: filter(WTFMove(f))
, pass(p)
, contentTexture(WTFMove(t))
{ }
};
const FilterInfo* filterInfo() const { return &m_filterInfo; }
ClipStack& clipStack() { return m_clipStack; }
GLint internalFormat() const { return m_internalFormat; }
void copyFromExternalTexture(GLuint textureID);
TextureMapperGL::Flags colorConvertFlags() const { return m_colorConvertFlags; }
private:
BitmapTextureGL(const TextureMapperContextAttributes&, const Flags, GLint internalFormat);
GLuint m_id { 0 };
IntSize m_textureSize;
GLuint m_fbo { 0 };
#if !USE(TEXMAP_DEPTH_STENCIL_BUFFER)
GLuint m_rbo { 0 };
#endif
GLuint m_depthBufferObject { 0 };
bool m_shouldClear { true };
ClipStack m_clipStack;
TextureMapperContextAttributes m_contextAttributes;
TextureMapperGL::Flags m_colorConvertFlags { TextureMapperGL::NoFlag };
#if ENABLE(WEBGL)
RefPtr<Image> m_pendingContents { nullptr };
#endif
void clearIfNeeded();
void createFboIfNeeded();
FilterInfo m_filterInfo;
GLint m_internalFormat;
GLenum m_format;
GLenum m_type {
#if OS(DARWIN)
GL_UNSIGNED_INT_8_8_8_8_REV
#else
GL_UNSIGNED_BYTE
#endif
};
};
BitmapTextureGL* toBitmapTextureGL(BitmapTexture*);
}
#endif // USE(TEXTURE_MAPPER_GL)
#endif // BitmapTextureGL_h
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