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opengl.cpp
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1902 lines (1574 loc) · 49.6 KB
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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 );