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opencv/modules/core/src/opengl.cpp
Alexander Alekhin 602f047fe8 build: replace WIN32 => _WIN32
2017-07-25 13:30:48 +03:00

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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include "precomp.hpp"
#ifdef HAVE_OPENGL
# include "gl_core_3_1.hpp"
# ifdef HAVE_CUDA
# include <cuda_gl_interop.h>
# endif
#else // HAVE_OPENGL
# define NO_OPENGL_SUPPORT_ERROR CV_ErrorNoReturn(cv::Error::StsBadFunc, "OpenCV was build without OpenGL support")
#endif // HAVE_OPENGL
using namespace cv;
using namespace cv::cuda;
namespace
{
#ifndef HAVE_OPENGL
inline void throw_no_ogl() { CV_Error(cv::Error::OpenGlNotSupported, "The library is compiled without OpenGL support"); }
#else
inline void throw_no_ogl() { CV_Error(cv::Error::OpenGlApiCallError, "OpenGL context doesn't exist"); }
bool checkError(const char* file, const int line, const char* func = 0)
{
GLenum err = gl::GetError();
if (err != gl::NO_ERROR_)
{
const char* msg;
switch (err)
{
case gl::INVALID_ENUM:
msg = "An unacceptable value is specified for an enumerated argument";
break;
case gl::INVALID_VALUE:
msg = "A numeric argument is out of range";
break;
case gl::INVALID_OPERATION:
msg = "The specified operation is not allowed in the current state";
break;
case gl::OUT_OF_MEMORY:
msg = "There is not enough memory left to execute the command";
break;
default:
msg = "Unknown error";
};
cvError(CV_OpenGlApiCallError, func, msg, file, line);
return false;
}
return true;
}
#endif
#define CV_CheckGlError() CV_DbgAssert( (checkError(__FILE__, __LINE__, CV_Func)) )
} // namespace
#ifdef HAVE_OPENGL
namespace
{
const GLenum gl_types[] = { gl::UNSIGNED_BYTE, gl::BYTE, gl::UNSIGNED_SHORT, gl::SHORT, gl::INT, gl::FLOAT, gl::DOUBLE };
}
#endif
////////////////////////////////////////////////////////////////////////
// setGlDevice
void cv::cuda::setGlDevice(int device)
{
#ifndef HAVE_OPENGL
(void) device;
throw_no_ogl();
#else
#ifndef HAVE_CUDA
(void) device;
throw_no_cuda();
#else
cudaSafeCall( cudaGLSetGLDevice(device) );
#endif
#endif
}
////////////////////////////////////////////////////////////////////////
// CudaResource
#if defined(HAVE_OPENGL) && defined(HAVE_CUDA)
namespace
{
class CudaResource
{
public:
CudaResource();
~CudaResource();
void registerBuffer(GLuint buffer);
void release();
void copyFrom(const void* src, size_t spitch, size_t width, size_t height, cudaStream_t stream = 0);
void copyTo(void* dst, size_t dpitch, size_t width, size_t height, cudaStream_t stream = 0);
void* map(cudaStream_t stream = 0);
void unmap(cudaStream_t stream = 0);
private:
cudaGraphicsResource_t resource_;
GLuint buffer_;
class GraphicsMapHolder;
};
CudaResource::CudaResource() : resource_(0), buffer_(0)
{
}
CudaResource::~CudaResource()
{
release();
}
void CudaResource::registerBuffer(GLuint buffer)
{
CV_DbgAssert( buffer != 0 );
if (buffer_ == buffer)
return;
cudaGraphicsResource_t resource;
cudaSafeCall( cudaGraphicsGLRegisterBuffer(&resource, buffer, cudaGraphicsMapFlagsNone) );
release();
resource_ = resource;
buffer_ = buffer;
}
void CudaResource::release()
{
if (resource_)
cudaGraphicsUnregisterResource(resource_);
resource_ = 0;
buffer_ = 0;
}
class CudaResource::GraphicsMapHolder
{
public:
GraphicsMapHolder(cudaGraphicsResource_t* resource, cudaStream_t stream);
~GraphicsMapHolder();
void reset();
private:
cudaGraphicsResource_t* resource_;
cudaStream_t stream_;
};
CudaResource::GraphicsMapHolder::GraphicsMapHolder(cudaGraphicsResource_t* resource, cudaStream_t stream) : resource_(resource), stream_(stream)
{
if (resource_)
cudaSafeCall( cudaGraphicsMapResources(1, resource_, stream_) );
}
CudaResource::GraphicsMapHolder::~GraphicsMapHolder()
{
if (resource_)
cudaGraphicsUnmapResources(1, resource_, stream_);
}
void CudaResource::GraphicsMapHolder::reset()
{
resource_ = 0;
}
void CudaResource::copyFrom(const void* src, size_t spitch, size_t width, size_t height, cudaStream_t stream)
{
CV_DbgAssert( resource_ != 0 );
GraphicsMapHolder h(&resource_, stream);
(void) h;
void* dst;
size_t size;
cudaSafeCall( cudaGraphicsResourceGetMappedPointer(&dst, &size, resource_) );
CV_DbgAssert( width * height == size );
if (stream == 0)
cudaSafeCall( cudaMemcpy2D(dst, width, src, spitch, width, height, cudaMemcpyDeviceToDevice) );
else
cudaSafeCall( cudaMemcpy2DAsync(dst, width, src, spitch, width, height, cudaMemcpyDeviceToDevice, stream) );
}
void CudaResource::copyTo(void* dst, size_t dpitch, size_t width, size_t height, cudaStream_t stream)
{
CV_DbgAssert( resource_ != 0 );
GraphicsMapHolder h(&resource_, stream);
(void) h;
void* src;
size_t size;
cudaSafeCall( cudaGraphicsResourceGetMappedPointer(&src, &size, resource_) );
CV_DbgAssert( width * height == size );
if (stream == 0)
cudaSafeCall( cudaMemcpy2D(dst, dpitch, src, width, width, height, cudaMemcpyDeviceToDevice) );
else
cudaSafeCall( cudaMemcpy2DAsync(dst, dpitch, src, width, width, height, cudaMemcpyDeviceToDevice, stream) );
}
void* CudaResource::map(cudaStream_t stream)
{
CV_DbgAssert( resource_ != 0 );
GraphicsMapHolder h(&resource_, stream);
void* ptr;
size_t size;
cudaSafeCall( cudaGraphicsResourceGetMappedPointer(&ptr, &size, resource_) );
h.reset();
return ptr;
}
void CudaResource::unmap(cudaStream_t stream)
{
CV_Assert( resource_ != 0 );
cudaGraphicsUnmapResources(1, &resource_, stream);
}
}
#endif
////////////////////////////////////////////////////////////////////////
// ogl::Buffer
#ifndef HAVE_OPENGL
class cv::ogl::Buffer::Impl
{
};
#else
class cv::ogl::Buffer::Impl
{
public:
static const Ptr<Impl>& empty();
Impl(GLuint bufId, bool autoRelease);
Impl(GLsizeiptr size, const GLvoid* data, GLenum target, bool autoRelease);
~Impl();
void bind(GLenum target) const;
void copyFrom(GLuint srcBuf, GLsizeiptr size);
void copyFrom(GLsizeiptr size, const GLvoid* data);
void copyTo(GLsizeiptr size, GLvoid* data) const;
void* mapHost(GLenum access);
void unmapHost();
#ifdef HAVE_CUDA
void copyFrom(const void* src, size_t spitch, size_t width, size_t height, cudaStream_t stream = 0);
void copyTo(void* dst, size_t dpitch, size_t width, size_t height, cudaStream_t stream = 0) const;
void* mapDevice(cudaStream_t stream = 0);
void unmapDevice(cudaStream_t stream = 0);
#endif
void setAutoRelease(bool flag) { autoRelease_ = flag; }
GLuint bufId() const { return bufId_; }
private:
Impl();
GLuint bufId_;
bool autoRelease_;
#ifdef HAVE_CUDA
mutable CudaResource cudaResource_;
#endif
};
const Ptr<cv::ogl::Buffer::Impl>& cv::ogl::Buffer::Impl::empty()
{
static Ptr<Impl> p(new Impl);
return p;
}
cv::ogl::Buffer::Impl::Impl() : bufId_(0), autoRelease_(false)
{
}
cv::ogl::Buffer::Impl::Impl(GLuint abufId, bool autoRelease) : bufId_(abufId), autoRelease_(autoRelease)
{
CV_Assert( gl::IsBuffer(abufId) == gl::TRUE_ );
}
cv::ogl::Buffer::Impl::Impl(GLsizeiptr size, const GLvoid* data, GLenum target, bool autoRelease) : bufId_(0), autoRelease_(autoRelease)
{
gl::GenBuffers(1, &bufId_);
CV_CheckGlError();
CV_Assert( bufId_ != 0 );
gl::BindBuffer(target, bufId_);
CV_CheckGlError();
gl::BufferData(target, size, data, gl::DYNAMIC_DRAW);
CV_CheckGlError();
gl::BindBuffer(target, 0);
CV_CheckGlError();
}
cv::ogl::Buffer::Impl::~Impl()
{
if (autoRelease_ && bufId_)
gl::DeleteBuffers(1, &bufId_);
}
void cv::ogl::Buffer::Impl::bind(GLenum target) const
{
gl::BindBuffer(target, bufId_);
CV_CheckGlError();
}
void cv::ogl::Buffer::Impl::copyFrom(GLuint srcBuf, GLsizeiptr size)
{
gl::BindBuffer(gl::COPY_WRITE_BUFFER, bufId_);
CV_CheckGlError();
gl::BindBuffer(gl::COPY_READ_BUFFER, srcBuf);
CV_CheckGlError();
gl::CopyBufferSubData(gl::COPY_READ_BUFFER, gl::COPY_WRITE_BUFFER, 0, 0, size);
CV_CheckGlError();
}
void cv::ogl::Buffer::Impl::copyFrom(GLsizeiptr size, const GLvoid* data)
{
gl::BindBuffer(gl::COPY_WRITE_BUFFER, bufId_);
CV_CheckGlError();
gl::BufferSubData(gl::COPY_WRITE_BUFFER, 0, size, data);
CV_CheckGlError();
}
void cv::ogl::Buffer::Impl::copyTo(GLsizeiptr size, GLvoid* data) const
{
gl::BindBuffer(gl::COPY_READ_BUFFER, bufId_);
CV_CheckGlError();
gl::GetBufferSubData(gl::COPY_READ_BUFFER, 0, size, data);
CV_CheckGlError();
}
void* cv::ogl::Buffer::Impl::mapHost(GLenum access)
{
gl::BindBuffer(gl::COPY_READ_BUFFER, bufId_);
CV_CheckGlError();
GLvoid* data = gl::MapBuffer(gl::COPY_READ_BUFFER, access);
CV_CheckGlError();
return data;
}
void cv::ogl::Buffer::Impl::unmapHost()
{
gl::UnmapBuffer(gl::COPY_READ_BUFFER);
}
#ifdef HAVE_CUDA
void cv::ogl::Buffer::Impl::copyFrom(const void* src, size_t spitch, size_t width, size_t height, cudaStream_t stream)
{
cudaResource_.registerBuffer(bufId_);
cudaResource_.copyFrom(src, spitch, width, height, stream);
}
void cv::ogl::Buffer::Impl::copyTo(void* dst, size_t dpitch, size_t width, size_t height, cudaStream_t stream) const
{
cudaResource_.registerBuffer(bufId_);
cudaResource_.copyTo(dst, dpitch, width, height, stream);
}
void* cv::ogl::Buffer::Impl::mapDevice(cudaStream_t stream)
{
cudaResource_.registerBuffer(bufId_);
return cudaResource_.map(stream);
}
void cv::ogl::Buffer::Impl::unmapDevice(cudaStream_t stream)
{
cudaResource_.unmap(stream);
}
#endif // HAVE_CUDA
#endif // HAVE_OPENGL
cv::ogl::Buffer::Buffer() : rows_(0), cols_(0), type_(0)
{
#ifndef HAVE_OPENGL
throw_no_ogl();
#else
impl_ = Impl::empty();
#endif
}
cv::ogl::Buffer::Buffer(int arows, int acols, int atype, unsigned int abufId, bool autoRelease) : rows_(0), cols_(0), type_(0)
{
#ifndef HAVE_OPENGL
(void) arows;
(void) acols;
(void) atype;
(void) abufId;
(void) autoRelease;
throw_no_ogl();
#else
impl_.reset(new Impl(abufId, autoRelease));
rows_ = arows;
cols_ = acols;
type_ = atype;
#endif
}
cv::ogl::Buffer::Buffer(Size asize, int atype, unsigned int abufId, bool autoRelease) : rows_(0), cols_(0), type_(0)
{
#ifndef HAVE_OPENGL
(void) asize;
(void) atype;
(void) abufId;
(void) autoRelease;
throw_no_ogl();
#else
impl_.reset(new Impl(abufId, autoRelease));
rows_ = asize.height;
cols_ = asize.width;
type_ = atype;
#endif
}
cv::ogl::Buffer::Buffer(InputArray arr, Target target, bool autoRelease) : rows_(0), cols_(0), type_(0)
{
#ifndef HAVE_OPENGL
(void) arr;
(void) target;
(void) autoRelease;
throw_no_ogl();
#else
const int kind = arr.kind();
switch (kind)
{
case _InputArray::OPENGL_BUFFER:
case _InputArray::CUDA_GPU_MAT:
copyFrom(arr, target, autoRelease);
break;
default:
{
Mat mat = arr.getMat();
CV_Assert( mat.isContinuous() );
const GLsizeiptr asize = mat.rows * mat.cols * mat.elemSize();
impl_.reset(new Impl(asize, mat.data, target, autoRelease));
rows_ = mat.rows;
cols_ = mat.cols;
type_ = mat.type();
break;
}
}
#endif
}
void cv::ogl::Buffer::create(int arows, int acols, int atype, Target target, bool autoRelease)
{
#ifndef HAVE_OPENGL
(void) arows;
(void) acols;
(void) atype;
(void) target;
(void) autoRelease;
throw_no_ogl();
#else
if (rows_ != arows || cols_ != acols || type_ != atype)
{
const GLsizeiptr asize = arows * acols * CV_ELEM_SIZE(atype);
impl_.reset(new Impl(asize, 0, target, autoRelease));
rows_ = arows;
cols_ = acols;
type_ = atype;
}
#endif
}
void cv::ogl::Buffer::release()
{
#ifdef HAVE_OPENGL
if (impl_)
impl_->setAutoRelease(true);
impl_ = Impl::empty();
rows_ = 0;
cols_ = 0;
type_ = 0;
#endif
}
void cv::ogl::Buffer::setAutoRelease(bool flag)
{
#ifndef HAVE_OPENGL
(void) flag;
throw_no_ogl();
#else
impl_->setAutoRelease(flag);
#endif
}
void cv::ogl::Buffer::copyFrom(InputArray arr, Target target, bool autoRelease)
{
#ifndef HAVE_OPENGL
(void) arr;
(void) target;
(void) autoRelease;
throw_no_ogl();
#else
const int kind = arr.kind();
const Size asize = arr.size();
const int atype = arr.type();
create(asize, atype, target, autoRelease);
switch (kind)
{
case _InputArray::OPENGL_BUFFER:
{
ogl::Buffer buf = arr.getOGlBuffer();
impl_->copyFrom(buf.bufId(), asize.area() * CV_ELEM_SIZE(atype));
break;
}
case _InputArray::CUDA_GPU_MAT:
{
#ifndef HAVE_CUDA
throw_no_cuda();
#else
GpuMat dmat = arr.getGpuMat();
impl_->copyFrom(dmat.data, dmat.step, dmat.cols * dmat.elemSize(), dmat.rows);
#endif
break;
}
default:
{
Mat mat = arr.getMat();
CV_Assert( mat.isContinuous() );
impl_->copyFrom(asize.area() * CV_ELEM_SIZE(atype), mat.data);
}
}
#endif
}
void cv::ogl::Buffer::copyFrom(InputArray arr, cuda::Stream& stream, Target target, bool autoRelease)
{
#ifndef HAVE_OPENGL
(void) arr;
(void) stream;
(void) target;
(void) autoRelease;
throw_no_ogl();
#else
#ifndef HAVE_CUDA
(void) arr;
(void) stream;
(void) target;
(void) autoRelease;
throw_no_cuda();
#else
GpuMat dmat = arr.getGpuMat();
create(dmat.size(), dmat.type(), target, autoRelease);
impl_->copyFrom(dmat.data, dmat.step, dmat.cols * dmat.elemSize(), dmat.rows, cuda::StreamAccessor::getStream(stream));
#endif
#endif
}
void cv::ogl::Buffer::copyTo(OutputArray arr) const
{
#ifndef HAVE_OPENGL
(void) arr;
throw_no_ogl();
#else
const int kind = arr.kind();
switch (kind)
{
case _InputArray::OPENGL_BUFFER:
{
arr.getOGlBufferRef().copyFrom(*this);
break;
}
case _InputArray::CUDA_GPU_MAT:
{
#ifndef HAVE_CUDA
throw_no_cuda();
#else
GpuMat& dmat = arr.getGpuMatRef();
dmat.create(rows_, cols_, type_);
impl_->copyTo(dmat.data, dmat.step, dmat.cols * dmat.elemSize(), dmat.rows);
#endif
break;
}
default:
{
arr.create(rows_, cols_, type_);
Mat mat = arr.getMat();
CV_Assert( mat.isContinuous() );
impl_->copyTo(mat.rows * mat.cols * mat.elemSize(), mat.data);
}
}
#endif
}
void cv::ogl::Buffer::copyTo(OutputArray arr, cuda::Stream& stream) const
{
#ifndef HAVE_OPENGL
(void) arr;
(void) stream;
throw_no_ogl();
#else
#ifndef HAVE_CUDA
(void) arr;
(void) stream;
throw_no_cuda();
#else
arr.create(rows_, cols_, type_);
GpuMat dmat = arr.getGpuMat();
impl_->copyTo(dmat.data, dmat.step, dmat.cols * dmat.elemSize(), dmat.rows, cuda::StreamAccessor::getStream(stream));
#endif
#endif
}
cv::ogl::Buffer cv::ogl::Buffer::clone(Target target, bool autoRelease) const
{
#ifndef HAVE_OPENGL
(void) target;
(void) autoRelease;
throw_no_ogl();
return cv::ogl::Buffer();
#else
ogl::Buffer buf;
buf.copyFrom(*this, target, autoRelease);
return buf;
#endif
}
void cv::ogl::Buffer::bind(Target target) const
{
#ifndef HAVE_OPENGL
(void) target;
throw_no_ogl();
#else
impl_->bind(target);
#endif
}
void cv::ogl::Buffer::unbind(Target target)
{
#ifndef HAVE_OPENGL
(void) target;
throw_no_ogl();
#else
gl::BindBuffer(target, 0);
CV_CheckGlError();
#endif
}
Mat cv::ogl::Buffer::mapHost(Access access)
{
#ifndef HAVE_OPENGL
(void) access;
throw_no_ogl();
return Mat();
#else
return Mat(rows_, cols_, type_, impl_->mapHost(access));
#endif
}
void cv::ogl::Buffer::unmapHost()
{
#ifndef HAVE_OPENGL
throw_no_ogl();
#else
return impl_->unmapHost();
#endif
}
GpuMat cv::ogl::Buffer::mapDevice()
{
#ifndef HAVE_OPENGL
throw_no_ogl();
return GpuMat();
#else
#ifndef HAVE_CUDA
throw_no_cuda();
return GpuMat();
#else
return GpuMat(rows_, cols_, type_, impl_->mapDevice());
#endif
#endif
}
void cv::ogl::Buffer::unmapDevice()
{
#ifndef HAVE_OPENGL
throw_no_ogl();
#else
#ifndef HAVE_CUDA
throw_no_cuda();
#else
impl_->unmapDevice();
#endif
#endif
}
cuda::GpuMat cv::ogl::Buffer::mapDevice(cuda::Stream& stream)
{
#ifndef HAVE_OPENGL
(void) stream;
throw_no_ogl();
return GpuMat();
#else
#ifndef HAVE_CUDA
(void) stream;
throw_no_cuda();
return GpuMat();
#else
return GpuMat(rows_, cols_, type_, impl_->mapDevice(cuda::StreamAccessor::getStream(stream)));
#endif
#endif
}
void cv::ogl::Buffer::unmapDevice(cuda::Stream& stream)
{
#ifndef HAVE_OPENGL
(void) stream;
throw_no_ogl();
#else
#ifndef HAVE_CUDA
(void) stream;
throw_no_cuda();
#else
impl_->unmapDevice(cuda::StreamAccessor::getStream(stream));
#endif
#endif
}
unsigned int cv::ogl::Buffer::bufId() const
{
#ifndef HAVE_OPENGL
throw_no_ogl();
return 0;
#else
return impl_->bufId();
#endif
}
//////////////////////////////////////////////////////////////////////////////////////////
// ogl::Texture
#ifndef HAVE_OPENGL
class cv::ogl::Texture2D::Impl
{
};
#else
class cv::ogl::Texture2D::Impl
{
public:
static const Ptr<Impl> empty();
Impl(GLuint texId, bool autoRelease);
Impl(GLint internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid* pixels, bool autoRelease);
~Impl();
void copyFrom(GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
void copyTo(GLenum format, GLenum type, GLvoid* pixels) const;
void bind() const;
void setAutoRelease(bool flag) { autoRelease_ = flag; }
GLuint texId() const { return texId_; }
private:
Impl();
GLuint texId_;
bool autoRelease_;
};
const Ptr<cv::ogl::Texture2D::Impl> cv::ogl::Texture2D::Impl::empty()
{
static Ptr<Impl> p(new Impl);
return p;
}
cv::ogl::Texture2D::Impl::Impl() : texId_(0), autoRelease_(false)
{
}
cv::ogl::Texture2D::Impl::Impl(GLuint atexId, bool autoRelease) : texId_(atexId), autoRelease_(autoRelease)
{
CV_Assert( gl::IsTexture(atexId) == gl::TRUE_ );
}
cv::ogl::Texture2D::Impl::Impl(GLint internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid* pixels, bool autoRelease) : texId_(0), autoRelease_(autoRelease)
{
gl::GenTextures(1, &texId_);
CV_CheckGlError();
CV_Assert(texId_ != 0);
gl::BindTexture(gl::TEXTURE_2D, texId_);
CV_CheckGlError();
gl::PixelStorei(gl::UNPACK_ALIGNMENT, 1);
CV_CheckGlError();
gl::TexImage2D(gl::TEXTURE_2D, 0, internalFormat, width, height, 0, format, type, pixels);
CV_CheckGlError();
gl::GenerateMipmap(gl::TEXTURE_2D);
CV_CheckGlError();
}
cv::ogl::Texture2D::Impl::~Impl()
{
if (autoRelease_ && texId_)
gl::DeleteTextures(1, &texId_);
}
void cv::ogl::Texture2D::Impl::copyFrom(GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels)
{
gl::BindTexture(gl::TEXTURE_2D, texId_);
CV_CheckGlError();
gl::PixelStorei(gl::UNPACK_ALIGNMENT, 1);
CV_CheckGlError();
gl::TexSubImage2D(gl::TEXTURE_2D, 0, 0, 0, width, height, format, type, pixels);
CV_CheckGlError();
gl::GenerateMipmap(gl::TEXTURE_2D);
CV_CheckGlError();
}
void cv::ogl::Texture2D::Impl::copyTo(GLenum format, GLenum type, GLvoid* pixels) const
{
gl::BindTexture(gl::TEXTURE_2D, texId_);
CV_CheckGlError();
gl::PixelStorei(gl::PACK_ALIGNMENT, 1);
CV_CheckGlError();
gl::GetTexImage(gl::TEXTURE_2D, 0, format, type, pixels);
CV_CheckGlError();
}
void cv::ogl::Texture2D::Impl::bind() const
{
gl::BindTexture(gl::TEXTURE_2D, texId_);
CV_CheckGlError();
}
#endif // HAVE_OPENGL
cv::ogl::Texture2D::Texture2D() : rows_(0), cols_(0), format_(NONE)
{
#ifndef HAVE_OPENGL
throw_no_ogl();
#else
impl_ = Impl::empty();
#endif
}
cv::ogl::Texture2D::Texture2D(int arows, int acols, Format aformat, unsigned int atexId, bool autoRelease) : rows_(0), cols_(0), format_(NONE)
{
#ifndef HAVE_OPENGL
(void) arows;
(void) acols;
(void) aformat;
(void) atexId;
(void) autoRelease;
throw_no_ogl();
#else
impl_.reset(new Impl(atexId, autoRelease));
rows_ = arows;
cols_ = acols;
format_ = aformat;
#endif
}
cv::ogl::Texture2D::Texture2D(Size asize, Format aformat, unsigned int atexId, bool autoRelease) : rows_(0), cols_(0), format_(NONE)
{
#ifndef HAVE_OPENGL
(void) asize;
(void) aformat;
(void) atexId;
(void) autoRelease;
throw_no_ogl();
#else
impl_.reset(new Impl(atexId, autoRelease));
rows_ = asize.height;
cols_ = asize.width;
format_ = aformat;
#endif
}
cv::ogl::Texture2D::Texture2D(InputArray arr, bool autoRelease) : rows_(0), cols_(0), format_(NONE)
{
#ifndef HAVE_OPENGL
(void) arr;
(void) autoRelease;
throw_no_ogl();
#else
const int kind = arr.kind();
const Size asize = arr.size();
const int atype = arr.type();
const int depth = CV_MAT_DEPTH(atype);
const int cn = CV_MAT_CN(atype);
CV_Assert( depth <= CV_32F );
CV_Assert( cn == 1 || cn == 3 || cn == 4 );
const Format internalFormats[] =
{
NONE, DEPTH_COMPONENT, NONE, RGB, RGBA
};
const GLenum srcFormats[] =
{
0, gl::DEPTH_COMPONENT, 0, gl::BGR, gl::BGRA
};
switch (kind)
{
case _InputArray::OPENGL_BUFFER:
{
ogl::Buffer buf = arr.getOGlBuffer();
buf.bind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
impl_.reset(new Impl(internalFormats[cn], asize.width, asize.height, srcFormats[cn], gl_types[depth], 0, autoRelease));
ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
break;
}
case _InputArray::CUDA_GPU_MAT:
{
#ifndef HAVE_CUDA
throw_no_cuda();
#else
GpuMat dmat = arr.getGpuMat();
ogl::Buffer buf(dmat, ogl::Buffer::PIXEL_UNPACK_BUFFER);
buf.setAutoRelease(true);
buf.bind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
impl_.reset(new Impl(internalFormats[cn], asize.width, asize.height, srcFormats[cn], gl_types[depth], 0, autoRelease));
ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
#endif
break;
}
default:
{
Mat mat = arr.getMat();
CV_Assert( mat.isContinuous() );
ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
impl_.reset(new Impl(internalFormats[cn], asize.width, asize.height, srcFormats[cn], gl_types[depth], mat.data, autoRelease));
break;
}
}
rows_ = asize.height;
cols_ = asize.width;
format_ = internalFormats[cn];
#endif
}
void cv::ogl::Texture2D::create(int arows, int acols, Format aformat, bool autoRelease)
{
#ifndef HAVE_OPENGL
(void) arows;
(void) acols;
(void) aformat;
(void) autoRelease;
throw_no_ogl();
#else
if (rows_ != arows || cols_ != acols || format_ != aformat)
{
ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
impl_.reset(new Impl(aformat, acols, arows, aformat, gl::FLOAT, 0, autoRelease));
rows_ = arows;
cols_ = acols;
format_ = aformat;
}
#endif
}
void cv::ogl::Texture2D::release()
{
#ifdef HAVE_OPENGL
if (impl_)
impl_->setAutoRelease(true);
impl_ = Impl::empty();
rows_ = 0;
cols_ = 0;
format_ = NONE;
#endif
}
void cv::ogl::Texture2D::setAutoRelease(bool flag)
{
#ifndef HAVE_OPENGL
(void) flag;
throw_no_ogl();
#else
impl_->setAutoRelease(flag);
#endif
}
void cv::ogl::Texture2D::copyFrom(InputArray arr, bool autoRelease)
{
#ifndef HAVE_OPENGL
(void) arr;
(void) autoRelease;
throw_no_ogl();
#else
const int kind = arr.kind();
const Size asize = arr.size();
const int atype = arr.type();
const int depth = CV_MAT_DEPTH(atype);
const int cn = CV_MAT_CN(atype);
CV_Assert( depth <= CV_32F );
CV_Assert( cn == 1 || cn == 3 || cn == 4 );
const Format internalFormats[] =
{
NONE, DEPTH_COMPONENT, NONE, RGB, RGBA
};
const GLenum srcFormats[] =
{
0, gl::DEPTH_COMPONENT, 0, gl::BGR, gl::BGRA
};
create(asize, internalFormats[cn], autoRelease);
switch(kind)
{
case _InputArray::OPENGL_BUFFER:
{
ogl::Buffer buf = arr.getOGlBuffer();
buf.bind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
impl_->copyFrom(asize.width, asize.height, srcFormats[cn], gl_types[depth], 0);
ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
break;
}
case _InputArray::CUDA_GPU_MAT:
{
#ifndef HAVE_CUDA
throw_no_cuda();
#else
GpuMat dmat = arr.getGpuMat();
ogl::Buffer buf(dmat, ogl::Buffer::PIXEL_UNPACK_BUFFER);
buf.setAutoRelease(true);
buf.bind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
impl_->copyFrom(asize.width, asize.height, srcFormats[cn], gl_types[depth], 0);
ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
#endif
break;
}
default:
{
Mat mat = arr.getMat();
CV_Assert( mat.isContinuous() );
ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
impl_->copyFrom(asize.width, asize.height, srcFormats[cn], gl_types[depth], mat.data);
}
}
#endif
}
void cv::ogl::Texture2D::copyTo(OutputArray arr, int ddepth, bool autoRelease) const
{
#ifndef HAVE_OPENGL
(void) arr;
(void) ddepth;
(void) autoRelease;
throw_no_ogl();
#else
const int kind = arr.kind();
const int cn = format_ == DEPTH_COMPONENT ? 1: format_ == RGB ? 3 : 4;
const GLenum dstFormat = format_ == DEPTH_COMPONENT ? gl::DEPTH_COMPONENT : format_ == RGB ? gl::BGR : gl::BGRA;
switch(kind)
{
case _InputArray::OPENGL_BUFFER:
{
ogl::Buffer& buf = arr.getOGlBufferRef();
buf.create(rows_, cols_, CV_MAKE_TYPE(ddepth, cn), ogl::Buffer::PIXEL_PACK_BUFFER, autoRelease);
buf.bind(ogl::Buffer::PIXEL_PACK_BUFFER);
impl_->copyTo(dstFormat, gl_types[ddepth], 0);
ogl::Buffer::unbind(ogl::Buffer::PIXEL_PACK_BUFFER);
break;
}
case _InputArray::CUDA_GPU_MAT:
{
#ifndef HAVE_CUDA
throw_no_cuda();
#else
ogl::Buffer buf(rows_, cols_, CV_MAKE_TYPE(ddepth, cn), ogl::Buffer::PIXEL_PACK_BUFFER);
buf.setAutoRelease(true);
buf.bind(ogl::Buffer::PIXEL_PACK_BUFFER);
impl_->copyTo(dstFormat, gl_types[ddepth], 0);
ogl::Buffer::unbind(ogl::Buffer::PIXEL_PACK_BUFFER);
buf.copyTo(arr);
#endif
break;
}
default:
{
arr.create(rows_, cols_, CV_MAKE_TYPE(ddepth, cn));
Mat mat = arr.getMat();
CV_Assert( mat.isContinuous() );
ogl::Buffer::unbind(ogl::Buffer::PIXEL_PACK_BUFFER);
impl_->copyTo(dstFormat, gl_types[ddepth], mat.data);
}
}
#endif
}
void cv::ogl::Texture2D::bind() const
{
#ifndef HAVE_OPENGL
throw_no_ogl();
#else
impl_->bind();
#endif
}
unsigned int cv::ogl::Texture2D::texId() const
{
#ifndef HAVE_OPENGL
throw_no_ogl();
return 0;
#else
return impl_->texId();
#endif
}
////////////////////////////////////////////////////////////////////////
// ogl::Arrays
void cv::ogl::Arrays::setVertexArray(InputArray vertex)
{
const int cn = vertex.channels();
const int depth = vertex.depth();
CV_Assert( cn == 2 || cn == 3 || cn == 4 );
CV_Assert( depth == CV_16S || depth == CV_32S || depth == CV_32F || depth == CV_64F );
if (vertex.kind() == _InputArray::OPENGL_BUFFER)
vertex_ = vertex.getOGlBuffer();
else
vertex_.copyFrom(vertex);
size_ = vertex_.size().area();
}
void cv::ogl::Arrays::resetVertexArray()
{
vertex_.release();
size_ = 0;
}
void cv::ogl::Arrays::setColorArray(InputArray color)
{
const int cn = color.channels();
CV_Assert( cn == 3 || cn == 4 );
if (color.kind() == _InputArray::OPENGL_BUFFER)
color_ = color.getOGlBuffer();
else
color_.copyFrom(color);
}
void cv::ogl::Arrays::resetColorArray()
{
color_.release();
}
void cv::ogl::Arrays::setNormalArray(InputArray normal)
{
const int cn = normal.channels();
const int depth = normal.depth();
CV_Assert( cn == 3 );
CV_Assert( depth == CV_8S || depth == CV_16S || depth == CV_32S || depth == CV_32F || depth == CV_64F );
if (normal.kind() == _InputArray::OPENGL_BUFFER)
normal_ = normal.getOGlBuffer();
else
normal_.copyFrom(normal);
}
void cv::ogl::Arrays::resetNormalArray()
{
normal_.release();
}
void cv::ogl::Arrays::setTexCoordArray(InputArray texCoord)
{
const int cn = texCoord.channels();
const int depth = texCoord.depth();
CV_Assert( cn >= 1 && cn <= 4 );
CV_Assert( depth == CV_16S || depth == CV_32S || depth == CV_32F || depth == CV_64F );
if (texCoord.kind() == _InputArray::OPENGL_BUFFER)
texCoord_ = texCoord.getOGlBuffer();
else
texCoord_.copyFrom(texCoord);
}
void cv::ogl::Arrays::resetTexCoordArray()
{
texCoord_.release();
}
void cv::ogl::Arrays::release()
{
resetVertexArray();
resetColorArray();
resetNormalArray();
resetTexCoordArray();
}
void cv::ogl::Arrays::setAutoRelease(bool flag)
{
vertex_.setAutoRelease(flag);
color_.setAutoRelease(flag);
normal_.setAutoRelease(flag);
texCoord_.setAutoRelease(flag);
}
void cv::ogl::Arrays::bind() const
{
#ifndef HAVE_OPENGL
throw_no_ogl();
#else
CV_Assert( texCoord_.empty() || texCoord_.size().area() == size_ );
CV_Assert( normal_.empty() || normal_.size().area() == size_ );
CV_Assert( color_.empty() || color_.size().area() == size_ );
if (texCoord_.empty())
{
gl::DisableClientState(gl::TEXTURE_COORD_ARRAY);
CV_CheckGlError();
}
else
{
gl::EnableClientState(gl::TEXTURE_COORD_ARRAY);
CV_CheckGlError();
texCoord_.bind(ogl::Buffer::ARRAY_BUFFER);
gl::TexCoordPointer(texCoord_.channels(), gl_types[texCoord_.depth()], 0, 0);
CV_CheckGlError();
}
if (normal_.empty())
{
gl::DisableClientState(gl::NORMAL_ARRAY);
CV_CheckGlError();
}
else
{
gl::EnableClientState(gl::NORMAL_ARRAY);
CV_CheckGlError();
normal_.bind(ogl::Buffer::ARRAY_BUFFER);
gl::NormalPointer(gl_types[normal_.depth()], 0, 0);
CV_CheckGlError();
}
if (color_.empty())
{
gl::DisableClientState(gl::COLOR_ARRAY);
CV_CheckGlError();
}
else
{
gl::EnableClientState(gl::COLOR_ARRAY);
CV_CheckGlError();
color_.bind(ogl::Buffer::ARRAY_BUFFER);
const int cn = color_.channels();
gl::ColorPointer(cn, gl_types[color_.depth()], 0, 0);
CV_CheckGlError();
}
if (vertex_.empty())
{
gl::DisableClientState(gl::VERTEX_ARRAY);
CV_CheckGlError();
}
else
{
gl::EnableClientState(gl::VERTEX_ARRAY);
CV_CheckGlError();
vertex_.bind(ogl::Buffer::ARRAY_BUFFER);
gl::VertexPointer(vertex_.channels(), gl_types[vertex_.depth()], 0, 0);
CV_CheckGlError();
}
ogl::Buffer::unbind(ogl::Buffer::ARRAY_BUFFER);
#endif
}
////////////////////////////////////////////////////////////////////////
// Rendering
void cv::ogl::render(const ogl::Texture2D& tex, Rect_<double> wndRect, Rect_<double> texRect)
{
#ifndef HAVE_OPENGL
(void) tex;
(void) wndRect;
(void) texRect;
throw_no_ogl();
#else
if (!tex.empty())
{
gl::MatrixMode(gl::PROJECTION);
gl::LoadIdentity();
gl::Ortho(0.0, 1.0, 1.0, 0.0, -1.0, 1.0);
CV_CheckGlError();
gl::MatrixMode(gl::MODELVIEW);
gl::LoadIdentity();
CV_CheckGlError();
gl::Disable(gl::LIGHTING);
CV_CheckGlError();
tex.bind();
gl::Enable(gl::TEXTURE_2D);
CV_CheckGlError();
gl::TexEnvi(gl::TEXTURE_ENV, gl::TEXTURE_ENV_MODE, gl::REPLACE);
CV_CheckGlError();
gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_MIN_FILTER, gl::LINEAR);
CV_CheckGlError();
const float vertex[] =
{
wndRect.x, wndRect.y, 0.0f,
wndRect.x, (wndRect.y + wndRect.height), 0.0f,
wndRect.x + wndRect.width, (wndRect.y + wndRect.height), 0.0f,
wndRect.x + wndRect.width, wndRect.y, 0.0f
};
const float texCoords[] =
{
texRect.x, texRect.y,
texRect.x, texRect.y + texRect.height,
texRect.x + texRect.width, texRect.y + texRect.height,
texRect.x + texRect.width, texRect.y
};
ogl::Buffer::unbind(ogl::Buffer::ARRAY_BUFFER);
gl::EnableClientState(gl::TEXTURE_COORD_ARRAY);
CV_CheckGlError();
gl::TexCoordPointer(2, gl::FLOAT, 0, texCoords);
CV_CheckGlError();
gl::DisableClientState(gl::NORMAL_ARRAY);
gl::DisableClientState(gl::COLOR_ARRAY);
CV_CheckGlError();
gl::EnableClientState(gl::VERTEX_ARRAY);
CV_CheckGlError();
gl::VertexPointer(3, gl::FLOAT, 0, vertex);
CV_CheckGlError();
gl::DrawArrays(gl::QUADS, 0, 4);
CV_CheckGlError();
}
#endif
}
void cv::ogl::render(const ogl::Arrays& arr, int mode, Scalar color)
{
#ifndef HAVE_OPENGL
(void) arr;
(void) mode;
(void) color;
throw_no_ogl();
#else
if (!arr.empty())
{
gl::Color3d(color[0] / 255.0, color[1] / 255.0, color[2] / 255.0);
arr.bind();
gl::DrawArrays(mode, 0, arr.size());
}
#endif
}
void cv::ogl::render(const ogl::Arrays& arr, InputArray indices, int mode, Scalar color)
{
#ifndef HAVE_OPENGL
(void) arr;
(void) indices;
(void) mode;
(void) color;
throw_no_ogl();
#else
if (!arr.empty() && !indices.empty())
{
gl::Color3d(color[0] / 255.0, color[1] / 255.0, color[2] / 255.0);
arr.bind();
const int kind = indices.kind();
switch (kind)
{
case _InputArray::OPENGL_BUFFER :
{
ogl::Buffer buf = indices.getOGlBuffer();
const int depth = buf.depth();
CV_Assert( buf.channels() == 1 );
CV_Assert( depth <= CV_32S );
GLenum type;
if (depth < CV_16U)
type = gl::UNSIGNED_BYTE;
else if (depth < CV_32S)
type = gl::UNSIGNED_SHORT;
else
type = gl::UNSIGNED_INT;
buf.bind(ogl::Buffer::ELEMENT_ARRAY_BUFFER);
gl::DrawElements(mode, buf.size().area(), type, 0);
ogl::Buffer::unbind(ogl::Buffer::ELEMENT_ARRAY_BUFFER);
break;
}
default:
{
Mat mat = indices.getMat();
const int depth = mat.depth();
CV_Assert( mat.channels() == 1 );
CV_Assert( depth <= CV_32S );
CV_Assert( mat.isContinuous() );
GLenum type;
if (depth < CV_16U)
type = gl::UNSIGNED_BYTE;
else if (depth < CV_32S)
type = gl::UNSIGNED_SHORT;
else
type = gl::UNSIGNED_INT;
ogl::Buffer::unbind(ogl::Buffer::ELEMENT_ARRAY_BUFFER);
gl::DrawElements(mode, mat.size().area(), type, mat.data);
}
}
}
#endif
}
////////////////////////////////////////////////////////////////////////
// CL-GL Interoperability
#ifdef HAVE_OPENCL
# include "opencv2/core/opencl/runtime/opencl_gl.hpp"
# ifdef cl_khr_gl_sharing
# define HAVE_OPENCL_OPENGL_SHARING
# else
# define NO_OPENCL_SHARING_ERROR CV_ErrorNoReturn(cv::Error::StsBadFunc, "OpenCV was build without OpenCL/OpenGL sharing support")
# endif
#else // HAVE_OPENCL
# define NO_OPENCL_SUPPORT_ERROR CV_ErrorNoReturn(cv::Error::StsBadFunc, "OpenCV was build without OpenCL support")
#endif // HAVE_OPENCL
#if defined(HAVE_OPENGL)
# if defined(__ANDROID__)
# include <EGL/egl.h>
# elif defined(__linux__)
# include <GL/glx.h>
# endif
#endif // HAVE_OPENGL
namespace cv { namespace ogl {
namespace ocl {
Context& initializeContextFromGL()
{
#if !defined(HAVE_OPENGL)
NO_OPENGL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL)
NO_OPENCL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL_OPENGL_SHARING)
NO_OPENCL_SHARING_ERROR;
#else
cl_uint numPlatforms;
cl_int status = clGetPlatformIDs(0, NULL, &numPlatforms);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Can't get number of platforms");
if (numPlatforms == 0)
CV_Error(cv::Error::OpenCLInitError, "OpenCL: No available platforms");
std::vector<cl_platform_id> platforms(numPlatforms);
status = clGetPlatformIDs(numPlatforms, &platforms[0], NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Can't get number of platforms");
// TODO Filter platforms by name from OPENCV_OPENCL_DEVICE
int found = -1;
cl_device_id device = NULL;
cl_context context = NULL;
for (int i = 0; i < (int)numPlatforms; i++)
{
// query platform extension: presence of "cl_khr_gl_sharing" extension is requred
{
AutoBuffer<char> extensionStr;
size_t extensionSize;
status = clGetPlatformInfo(platforms[i], CL_PLATFORM_EXTENSIONS, 0, NULL, &extensionSize);
if (status == CL_SUCCESS)
{
extensionStr.allocate(extensionSize+1);
status = clGetPlatformInfo(platforms[i], CL_PLATFORM_EXTENSIONS, extensionSize, (char*)extensionStr, NULL);
}
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Can't get platform extension string");
if (!strstr((const char*)extensionStr, "cl_khr_gl_sharing"))
continue;
}
clGetGLContextInfoKHR_fn clGetGLContextInfoKHR = (clGetGLContextInfoKHR_fn)
clGetExtensionFunctionAddressForPlatform(platforms[i], "clGetGLContextInfoKHR");
if (!clGetGLContextInfoKHR)
continue;
cl_context_properties properties[] =
{
#if defined(_WIN32)
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
CL_GL_CONTEXT_KHR, (cl_context_properties)wglGetCurrentContext(),
CL_WGL_HDC_KHR, (cl_context_properties)wglGetCurrentDC(),
#elif defined(__ANDROID__)
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
CL_GL_CONTEXT_KHR, (cl_context_properties)eglGetCurrentContext(),
CL_EGL_DISPLAY_KHR, (cl_context_properties)eglGetCurrentDisplay(),
#elif defined(__linux__)
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
CL_GL_CONTEXT_KHR, (cl_context_properties)glXGetCurrentContext(),
CL_GLX_DISPLAY_KHR, (cl_context_properties)glXGetCurrentDisplay(),
#endif
0
};
// query device
device = NULL;
status = clGetGLContextInfoKHR(properties, CL_CURRENT_DEVICE_FOR_GL_CONTEXT_KHR, sizeof(cl_device_id), (void*)&device, NULL);
if (status != CL_SUCCESS)
continue;
// create context
context = clCreateContext(properties, 1, &device, NULL, NULL, &status);
if (status != CL_SUCCESS)
{
clReleaseDevice(device);
}
else
{
found = i;
break;
}
}
if (found < 0)
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Can't create context for OpenGL interop");
Context& ctx = Context::getDefault(false);
initializeContextFromHandle(ctx, platforms[found], context, device);
return ctx;
#endif
}
} // namespace cv::ogl::ocl
void convertToGLTexture2D(InputArray src, Texture2D& texture)
{
(void)src; (void)texture;
#if !defined(HAVE_OPENGL)
NO_OPENGL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL)
NO_OPENCL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL_OPENGL_SHARING)
NO_OPENCL_SHARING_ERROR;
#else
Size srcSize = src.size();
CV_Assert(srcSize.width == (int)texture.cols() && srcSize.height == (int)texture.rows());
using namespace cv::ocl;
Context& ctx = Context::getDefault();
cl_context context = (cl_context)ctx.ptr();
UMat u = src.getUMat();
// TODO Add support for roi
CV_Assert(u.offset == 0);
CV_Assert(u.isContinuous());
cl_int status = 0;
cl_mem clImage = clCreateFromGLTexture(context, CL_MEM_WRITE_ONLY, gl::TEXTURE_2D, 0, texture.texId(), &status);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clCreateFromGLTexture failed");
cl_mem clBuffer = (cl_mem)u.handle(ACCESS_READ);
cl_command_queue q = (cl_command_queue)Queue::getDefault().ptr();
status = clEnqueueAcquireGLObjects(q, 1, &clImage, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueAcquireGLObjects failed");
size_t offset = 0; // TODO
size_t dst_origin[3] = {0, 0, 0};
size_t region[3] = {u.cols, u.rows, 1};
status = clEnqueueCopyBufferToImage(q, clBuffer, clImage, offset, dst_origin, region, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueCopyBufferToImage failed");
status = clEnqueueReleaseGLObjects(q, 1, &clImage, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueReleaseGLObjects failed");
status = clFinish(q); // TODO Use events
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clFinish failed");
status = clReleaseMemObject(clImage); // TODO RAII
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clReleaseMemObject failed");
#endif
}
void convertFromGLTexture2D(const Texture2D& texture, OutputArray dst)
{
(void)texture; (void)dst;
#if !defined(HAVE_OPENGL)
NO_OPENGL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL)
NO_OPENCL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL_OPENGL_SHARING)
NO_OPENCL_SHARING_ERROR;
#else
// check texture format
const int dtype = CV_8UC4;
CV_Assert(texture.format() == Texture2D::RGBA);
int textureType = dtype;
CV_Assert(textureType >= 0);
using namespace cv::ocl;
Context& ctx = Context::getDefault();
cl_context context = (cl_context)ctx.ptr();
// TODO Need to specify ACCESS_WRITE here somehow to prevent useless data copying!
dst.create(texture.size(), textureType);
UMat u = dst.getUMat();
// TODO Add support for roi
CV_Assert(u.offset == 0);
CV_Assert(u.isContinuous());
cl_int status = 0;
cl_mem clImage = clCreateFromGLTexture(context, CL_MEM_READ_ONLY, gl::TEXTURE_2D, 0, texture.texId(), &status);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clCreateFromGLTexture failed");
cl_mem clBuffer = (cl_mem)u.handle(ACCESS_READ);
cl_command_queue q = (cl_command_queue)Queue::getDefault().ptr();
status = clEnqueueAcquireGLObjects(q, 1, &clImage, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueAcquireGLObjects failed");
size_t offset = 0; // TODO
size_t src_origin[3] = {0, 0, 0};
size_t region[3] = {u.cols, u.rows, 1};
status = clEnqueueCopyImageToBuffer(q, clImage, clBuffer, src_origin, region, offset, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueCopyImageToBuffer failed");
status = clEnqueueReleaseGLObjects(q, 1, &clImage, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueReleaseGLObjects failed");
status = clFinish(q); // TODO Use events
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clFinish failed");
status = clReleaseMemObject(clImage); // TODO RAII
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clReleaseMemObject failed");
#endif
}
//void mapGLBuffer(const Buffer& buffer, UMat& dst, int accessFlags)
UMat mapGLBuffer(const Buffer& buffer, int accessFlags)
{
(void)buffer; (void)accessFlags;
#if !defined(HAVE_OPENGL)
NO_OPENGL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL)
NO_OPENCL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL_OPENGL_SHARING)
NO_OPENCL_SHARING_ERROR;
#else
using namespace cv::ocl;
Context& ctx = Context::getDefault();
cl_context context = (cl_context)ctx.ptr();
cl_command_queue clQueue = (cl_command_queue)Queue::getDefault().ptr();
int clAccessFlags = 0;
switch (accessFlags & (ACCESS_READ|ACCESS_WRITE))
{
default:
case ACCESS_READ|ACCESS_WRITE:
clAccessFlags = CL_MEM_READ_WRITE;
break;
case ACCESS_READ:
clAccessFlags = CL_MEM_READ_ONLY;
break;
case ACCESS_WRITE:
clAccessFlags = CL_MEM_WRITE_ONLY;
break;
}
cl_int status = 0;
cl_mem clBuffer = clCreateFromGLBuffer(context, clAccessFlags, buffer.bufId(), &status);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clCreateFromGLBuffer failed");
gl::Finish();
status = clEnqueueAcquireGLObjects(clQueue, 1, &clBuffer, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueAcquireGLObjects failed");
size_t step = buffer.cols() * buffer.elemSize();
int rows = buffer.rows();
int cols = buffer.cols();
int type = buffer.type();
UMat u;
convertFromBuffer(clBuffer, step, rows, cols, type, u);
return u;
#endif
}
void unmapGLBuffer(UMat& u)
{
(void)u;
#if !defined(HAVE_OPENGL)
NO_OPENGL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL)
NO_OPENCL_SUPPORT_ERROR;
#elif !defined(HAVE_OPENCL_OPENGL_SHARING)
NO_OPENCL_SHARING_ERROR;
#else
using namespace cv::ocl;
cl_command_queue clQueue = (cl_command_queue)Queue::getDefault().ptr();
cl_mem clBuffer = (cl_mem)u.handle(ACCESS_READ);
u.release();
cl_int status = clEnqueueReleaseGLObjects(clQueue, 1, &clBuffer, 0, NULL, NULL);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clEnqueueReleaseGLObjects failed");
status = clFinish(clQueue);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clFinish failed");
status = clReleaseMemObject(clBuffer);
if (status != CL_SUCCESS)
CV_Error(cv::Error::OpenCLApiCallError, "OpenCL: clReleaseMemObject failed");
#endif
}
}} // namespace cv::ogl
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