// This function has to be called after all the OpenGL textures have been created
bool RayCastRenderer::resetBuffers(void)
{
F();
size_t cell_cnt = m_data_width * m_data_height * m_data_depth;
try
{
m_cell_cnts_buf = boost::compute::buffer(m_cl_ctx, cell_cnt * sizeof(cl_uint));
m_grads_x_buf = boost::compute::buffer(m_cl_ctx, cell_cnt * sizeof(cl_float));
m_grads_y_buf = boost::compute::buffer(m_cl_ctx, cell_cnt * sizeof(cl_float));
m_grads_z_buf = boost::compute::buffer(m_cl_ctx, cell_cnt * sizeof(cl_float));
m_data_cl_img = boost::compute::opengl_texture(m_cl_ctx, GL_TEXTURE_3D, 0, m_data.textureId());
}
catch (const boost::compute::opencl_error & e)
{
ERRORM(e.what());
return false;
}
catch (const std::exception & e)
{
ERRORM("An unexpected error occured during SPHUniformGrid initialization: " << e.what());
return false;
}
return true;
}
bool GLBuffer::bufferData(const GLvoid *data, GLsizeiptr size, AccessType at, GLenum usage)
{
assert(m_ctx != nullptr);
OGLF->glGetError(); // clear any previous errors
OGLF->glBindBuffer(GL_ARRAY_BUFFER, m_vbo);
OGLF->glBufferData(GL_ARRAY_BUFFER, size, data, usage);
{
GLenum err = OGLF->glGetError();
if (err != GL_NO_ERROR)
{
ERRORM("Failed to buffer data: " << ogl::errorToStr(err));
return false;
}
}
OGLF->glBindBuffer(GL_ARRAY_BUFFER, 0);
cl_int err = CL_SUCCESS;
cl_mem mem = clCreateFromGLBuffer(m_ctx, at, m_vbo, &err);
if (err != CL_SUCCESS)
{
ERRORM("Failed to create OpenCL buffer: " << ocl::errorToStr(err));
return false;
}
clReleaseMemObject(m_mem);
m_mem = mem;
return true;
}
bool ConvFilterBase::setFilterKernel(const float *filter, int size, int filter_w,
QCLBuffer & filter_ocl,
QCLKernel & kernel_ocl,
int & filter_ocl_size)
{
if (size != filter_ocl_size)
{
filter_ocl = m_ctx->createBufferCopy(filter, size * sizeof(float), QCLMemoryObject::ReadOnly);
if (filter_ocl.isNull())
{
ERRORM("Failed to create convolution kernel buffer: " << m_ctx->lastError());
return false;
}
filter_ocl_size = size;
kernel_ocl.setArg(FILTER_IDX, filter_ocl);
kernel_ocl.setArg(FILTER_SIZE_IDX, filter_w);
kernel_ocl.setArg(FILTER_SIZE_HALF_IDX, (filter_w - 1) / 2);
}
else
{
if (!filter_ocl.write(filter, size * sizeof(float)))
{
ERRORM("Failed to write convolution kernel data: " << m_ctx->lastError());
return false;
}
}
return true;
}
bool DebugParticleSystem::init(void)
{
try
{
/* create gen_rand_particles program and kernel */
{
QFile f(":/src/opencl/gen_rand_particles.cl");
if (!f.open(QFile::ReadOnly)) return false;
m_gen_rand_particles_prog = boost::compute::program::build_with_source(f.readAll().toStdString(), m_cl_ctx);
m_gen_rand_particles_kernel = m_gen_rand_particles_prog.create_kernel("gen_part_positions");
}
/* create polar_spiral program and kernel */
{
QFile f(":/src/opencl/polar_spiral.cl");
if (!f.open(QFile::ReadOnly)) return false;
m_polar_spiral_prog = boost::compute::program::build_with_source(f.readAll().toStdString(), m_cl_ctx);
m_polar_spiral_kernel = m_polar_spiral_prog.create_kernel("polar_spiral");
}
}
catch (const boost::compute::opencl_error & e)
{
ERRORM("DebugParticleSystem: An OpenCL error occured: " << e.what());
return false;
}
catch (const std::exception & e)
{
ERRORM("DebugParticleSystem: An unexpected error occured during ParticleSystem initialization: "
<< e.what());
return false;
}
return true;
}
bool Movie::saveAsAVI(const std::string & filename, int fourcc) const
{
if (m_frames.empty())
{
WARNM("There are no frames in the movie");
return true;
}
cv::Size frame_size(m_frame_w, m_frame_h);
cv::VideoWriter writer(filename, fourcc, m_fps, frame_size, true);
if (!writer.isOpened())
{
ERRORM("Failed to create video writer");
return false;
}
cv::Mat frame;
for (int i = 0; i < m_frames.size(); ++i)
{
if (!qImage2CvMat(m_frames[i], frame))
{
ERRORM("Unsupported conversion from "
<< utils::qImageFormatToString(m_frames[i].format())
<< " pixel format");
return false;
}
writer.write(frame);
}
return true;
}
bool RayCastRenderer::initCL(const boost::compute::context & ctx,
const boost::compute::command_queue & queue)
{
F();
try
{
// build opencl program
QFile f(":/src/opencl/ray_cast_renderer.cl");
if (!f.open(QFile::ReadOnly)) return false;
m_prog = boost::compute::program::create_with_source(f.readAll().toStdString(), ctx);
m_prog.build();
// print build log in case there are any warnings
std::string log(m_prog.build_log());
if (!log.empty())
{
WARNM("---------------------- Build log ---------------------------------");
WARNM(log);
WARNM("------------------- End of Build log -----------------------------");
}
// create kernels
m_calculate_particle_cnts_kernel = m_prog.create_kernel("ray_cast_renderer_calculate_particle_cnts");
utils::ocl::printKernelInfo(m_calculate_particle_cnts_kernel);
m_calculate_gradients_kernel = m_prog.create_kernel("ray_cast_renderer_calculate_gradients");
utils::ocl::printKernelInfo(m_calculate_gradients_kernel);
m_calculate_normals_kernel = m_prog.create_kernel("ray_cast_renderer_calculate_normals");
utils::ocl::printKernelInfo(m_calculate_normals_kernel);
m_queue = queue;
m_cl_ctx = ctx;
}
catch (const boost::compute::opencl_error & e)
{
ERRORM(e.what());
if (e.error_code() == CL_BUILD_PROGRAM_FAILURE) ERRORM(m_prog.build_log());
return false;
}
catch (const std::exception & e)
{
ERRORM("An unexpected error occured during SPHUniformGrid initialization: " << e.what());
return false;
}
return true;
}
bool Movie::saveAsAVI(const std::string & filename, int fourcc)
{
if (m_frames.empty())
{
WARNM("There are no frames in the movie");
return true;
}
cv::Size frame_size(m_frame_w, m_frame_h);
cv::VideoWriter writer(filename, fourcc, m_fps, frame_size, true);
if (!writer.isOpened())
{
ERRORM("Failed to create video writer");
return false;
}
//cv::Mat cv_frame(m_frame_h, m_frame_w, CV_8UC3, nullptr);
cv::Mat cv_frame(m_frame_h, m_frame_w, CV_8UC4, nullptr);
for (int i = 0; i < m_frames.size(); ++i)
{
QImage & frame = m_frames[i];
if (frame.format() != QImage::Format_RGB888)
{
INFOM("Converting frame #" << i << " from "
<< utils::qImageFormatToString(frame.format())
<< " to QImage::Format_RGB888");
frame = frame.convertToFormat(QImage::Format_RGB888);
if (frame.isNull())
{
ERRORM("Failed to convert pixel format of frame #" << i << " to QImage::Format_RGB888");
return false;
}
}
// the const cast is here because the function called is constBits which returns a const pointer
// and constBits() in turn is called because it does not detach the pixel buffer from QImage,
// which is the desired behaviour in this case.
// The cost_cast should also be safe here, since write method of VideoWriter should write to the
// pixels provided
cv_frame.data = const_cast<uchar*>(frame.constBits());
writer.write(cv_frame);
}
return true;
}
bool loadSkyBoxTexture(QOpenGLTexture & tex,
const char *posx, const char *negx,
const char *posy, const char *negy,
const char *posz, const char *negz)
{
if (!tex.create())
{
ERRORM("Failed to create skybox texture's OpenGL object name");
return false;
}
tex.bind();
utils::misc::ScopedGuard guard([&tex] { tex.release(); });
(void) guard;
if (!loadTextureHelper(posx, GL_TEXTURE_CUBE_MAP_POSITIVE_X)) return false;
if (!loadTextureHelper(negx, GL_TEXTURE_CUBE_MAP_NEGATIVE_X)) return false;
if (!loadTextureHelper(posy, GL_TEXTURE_CUBE_MAP_POSITIVE_Y)) return false;
if (!loadTextureHelper(negy, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y)) return false;
if (!loadTextureHelper(posz, GL_TEXTURE_CUBE_MAP_POSITIVE_Z)) return false;
if (!loadTextureHelper(negz, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)) return false;
OGLF->glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
OGLF->glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
OGLF->glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
OGLF->glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
OGLF->glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
return true;
}
bool RayCastRenderer::resetDataTexture(void)
{
F();
// nahratie dat do textury
if (!m_data.create())
{
ERRORM("Failed to create OpenGL 3D texture for volume data");
return false;
}
OGLF->glBindTexture(GL_TEXTURE_3D, m_data.textureId());
//OGLF->glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
//OGLF->glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
//OGLF->glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_BORDER);
OGLF->glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
OGLF->glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
OGLF->glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
OGLF->glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
OGLF->glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
OGLF->glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA,
m_data_width, m_data_height, m_data_depth,
0, GL_RGBA, GL_FLOAT, nullptr);
OGLF->glBindTexture(GL_TEXTURE_3D, 0);
return true;
}
int elf_check_supported(Elf_Env *env, Elf64_Ehdr *hdr) {
if (hdr->e_ident[0] != 0x7f ||
hdr->e_ident[1] != 'E' ||
hdr->e_ident[2] != 'L' ||
hdr->e_ident[3] != 'F') {
ERROR("Bad magic number");
return 0;
}
if(hdr->e_ident[EI_CLASS] != 2) {
ERROR("Bad EI_CLASS");
return 0;
}
if(hdr->e_ident[EI_DATA] != 2) {
ERROR("Bad EI_DATA");
return 0;
}
if(hdr->e_ident[EI_VERSION] != 1) {
ERROR("Bad EI_VERSION");
return 0;
}
if(hdr->e_ident[EI_OSABI] != 9) {
ERRORM("Bad EI_OSABI: %X", hdr->e_ident[EI_OSABI]);
return 0;
}
if(hdr->e_ident[EI_ABIVERSION] != 0) {
ERRORM("Bad EI_ABIVERSION: %X", hdr->e_ident[EI_ABIVERSION]);
return 0;
}
if(hdr->e_type != 2) {
ERRORM("Bad e_type: %X", hdr->e_type);
return 0;
}
if(hdr->e_machine != 8) {
ERRORM("Bad e_machine: %X", hdr->e_machine);
return 0;
}
if(hdr->e_version != 1) {
ERROR("Bad e_version");
return 0;
}
if((hdr->e_flags != 0x30000007) && (hdr->e_flags != 0x30C2C005)) {
ERRORM("Bad e_flags: %X", hdr->e_flags);
return 0;
}
return 1;
}
bool MeshWarpWidget::setImage(const QString & filename)
{
QImage img(filename);
if (img.isNull())
{
ERRORM("Failed to open image: " << filename.toStdString());
return false;
}
return setImage(img);
}
bool OilifyFilter::init(void)
{
// skip OpenCL initialization in case context is not given
if (m_ctx == nullptr) return (m_good = true);
// compile program
m_program = m_ctx->buildProgramFromSourceFile(CLSRCFILE("oilify.cl"));
if (m_program.isNull())
{
ERRORM("Failed to create Oilify filter program: " << m_program.log().toStdString());
return false;
}
// create kernel
#ifndef OPTIMIZED_VER
m_kernel = m_program.createKernel("oilify");
if (m_kernel.isNull())
{
ERRORM("Failed to create Oilify filter kernel: " << m_program.log().toStdString());
return false;
}
#else
m_kernel_oilify = m_program.createKernel("oilify");
if (m_kernel_oilify.isNull())
{
ERRORM("Failed to create Oilify filter kernel: " << m_program.log().toStdString());
return false;
}
m_kernel_oilify_prepare = m_program.createKernel("oilify_prepare");
if (m_kernel_oilify_prepare.isNull())
{
ERRORM("Failed to create oilify_prepare filter kernel: " << m_program.log().toStdString());
return false;
}
#endif
setRadius(DEFAULT_RADIUS);
setLevels(DEFAULT_LEVELS);
return (m_good = true);
}
bool DebugParticleSystem::reset_impl(const io::VoxelMesh * /* mesh */)
{
INFOM("DebugParticleSystem: Initializing Test Simulation data");
unsigned int part_num = m_sim_params->particleCount();
/* allocate the buffers to hold particle positions and colors */
if (!m_particle_pos_buf.bufferData(nullptr, part_num * sizeof(cl_float4), utils::ocl::GLBuffer::WRITE_ONLY))
{
ERRORM("DebugParticleSystem: Failed to initialize position GLBuffer");
return false;
}
if (!m_particle_col_buf.bufferData(nullptr, part_num * sizeof(cl_float4), utils::ocl::GLBuffer::WRITE_ONLY))
{
ERRORM("DebugParticleSystem: Failed to initialize color GLBuffer");
return false;
}
/* initialize kernel arguments */
if (!utils::ocl::KernelArgs(m_gen_rand_particles_kernel, "m_gen_rand_particles_kernel")
.arg(m_particle_pos_buf.getCLID())
.arg(m_particle_col_buf.getCLID()))
//.arg((cl_ulong) (time(nullptr))))
{
return false;
}
cl_float3 position = { 0.0f, 0.0f, 0.0f };
if (!utils::ocl::KernelArgs(m_polar_spiral_kernel, "m_polar_spiral_kernel")
.arg(m_particle_pos_buf.getCLID())
.arg(m_particle_col_buf.getCLID())
.arg(position))
{
return false;
}
m_sim_params->setTime(0.0f);
return true;
}
bool RayCastRenderer::reset_impl(int w, int h)
{
F();
if ((m_data_width <= 0) || (m_data_height <= 0) || (m_data_depth <= 0))
{
ERRORM("RayCastRenderer: grid size is not set");
return false;
}
if ((m_cell_starts_buf.get() == nullptr) || (m_cell_ends_buf.get() == nullptr))
{
ERRORM("RayCastRenderer: cell_starts or cell_ends buffer is not set");
return false;
}
return resetDataTexture() &&
resetBuffers() &&
resetFramebuffer(w, h) &&
resetTransferFunctionTexture();
}
bool PointSpriteRenderer::init(void)
{
// compile shaders
if (!utils::ogl::buildShaderProgram(m_prog,
":/src/opengl/point_sprite_renderer.vert",
":/src/opengl/point_sprite_renderer.frag"))
{
ERRORM("Failed to compile shaders for point sprite program");
return false;
}
// set default light parameters
m_light_pos.setX(-10.0f);
m_light_pos.setY( 10.0f);
m_light_pos.setZ( 15.0f);
m_light_ambient_col.setX(0.8f);
m_light_ambient_col.setY(0.8f);
m_light_ambient_col.setZ(0.8f);
m_light_diffuse_col.setX(1.0f);
m_light_diffuse_col.setY(1.0f);
m_light_diffuse_col.setZ(1.0f);
// uniform color program
GLuint uc_prog = m_prog.programId();
OGLF->glUseProgram(uc_prog);
//OGLF->glUniform3f(OGLF->glGetUniformLocation(uc_prog, "light_pos"), -10.0f, 10.0f, 15.0f);
//OGLF->glUniform3f(OGLF->glGetUniformLocation(uc_prog, "light_col_a"), 0.8f, 0.8f, 0.8f);
//OGLF->glUniform3f(OGLF->glGetUniformLocation(uc_prog, "light_col_d"), 1.0f, 1.0f, 1.0f);
OGLF->glUniform3f(OGLF->glGetUniformLocation(uc_prog, "light_col_s"), 1.0f, 1.0f, 1.0f);
OGLF->glUseProgram(0);
// Create vertex array object
return m_vao.create();
}
float *ConvFilterBase::mapFilterKernel(int size, int filter_w,
QCLBuffer & filter_ocl,
QCLKernel & kernel_ocl,
int & filter_ocl_size)
{
if (size != filter_ocl_size)
{
filter_ocl = m_ctx->createBufferDevice(size * sizeof(float), QCLBuffer::ReadOnly);
if (filter_ocl.isNull())
{
ERRORM("Failed to create convolution kernel buffer: " << m_ctx->lastError());
return nullptr;
}
filter_ocl_size = size;
kernel_ocl.setArg(FILTER_IDX, filter_ocl);
kernel_ocl.setArg(FILTER_SIZE_IDX, filter_w);
kernel_ocl.setArg(FILTER_SIZE_HALF_IDX, (filter_w - 1) / 2);
}
return (float *) filter_ocl.map(QCLBuffer::WriteOnly);
}
bool OilifyFilter::runCL(const QCLImage2D & src, int w, int h, QCLImage2D & dst)
{
if (!isGood()) return false;
#ifndef OPTIMIZED_VER
m_kernel.setArg(SRC_IDX, src);
m_kernel.setArg(DST_IDX, dst);
m_kernel.setGlobalWorkSize(w, h);
m_kernel.run();
#else
if ((m_tmp_buf_w != w) || (m_tmp_buf_h != h))
{
QCLImageFormat fmt(QCLImageFormat::Order_BGRA, QCLImageFormat::Type_Unnormalized_UInt8);
m_tmp_buf = m_ctx->createImage2DDevice(fmt, QSize(w, h), QCLImage2D::ReadWrite);
if (m_tmp_buf.isNull())
{
ERRORM("Failed to create temporary buffer for Oilify Filter: " << m_ctx->lastError());
return false;
}
m_tmp_buf_w = w;
m_tmp_buf_h = h;
m_kernel_oilify_prepare.setGlobalWorkSize(w, h);
m_kernel_oilify.setGlobalWorkSize(w, h);
}
m_kernel_oilify_prepare.setArg(SRC_IDX, src);
m_kernel_oilify_prepare.setArg(DST_IDX, m_tmp_buf);
m_kernel_oilify_prepare.run();
m_kernel_oilify.setArg(SRC_IDX, m_tmp_buf);
m_kernel_oilify.setArg(DST_IDX, dst);
m_kernel_oilify.run();
#endif
return true;
}
Movie *MainWindow::morphMovie(const QImage & src_img, const Mesh & src_mesh,
const QImage & dst_img, const Mesh & dst_mesh,
int nframes)
{
if (!src_mesh.hasSameDimensions(dst_mesh))
{
ERRORM("source mesh has different dimensions than destination mesh");
return nullptr;
}
Mesh tmp_mesh(src_mesh.sizeX(), src_mesh.sizeY(), src_mesh.width(), src_mesh.heigth());
Movie *movie = new Movie;
ui->progressBar->setMaximum(nframes);
ui->progressBar->show();
for (int i = 0; i < nframes; ++i)
{
float t = float(i) / (float(nframes - 1));
QImage frame(morphFrame(src_img, src_mesh, dst_img, dst_mesh, tmp_mesh, t));
if (frame.isNull())
{
WARNM("Failed to morph frame n. " << i);
}
movie->addFrame(frame);
ui->progressBar->setValue(i);
}
ui->progressBar->hide();
return movie;
}
bool load2DTexture(QOpenGLTexture & tex,
const char *name,
GLint internal_format,
GLint filter_mode, GLint clamp_mode)
{
if (!tex.create())
{
ERRORM("Failed to create 2D texture's OpenGL object name");
return false;
}
tex.bind();
utils::misc::ScopedGuard guard([&tex] { tex.release(); });
(void) guard;
if (!loadTextureHelper(name, GL_TEXTURE_2D, internal_format)) return false;
OGLF->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter_mode);
OGLF->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter_mode);
OGLF->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, clamp_mode);
OGLF->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, clamp_mode);
return true;
}
bool selectGLDeviceAndPlatform(cl_device_id *device, cl_platform_id *platform)
{
assert(device != nullptr);
assert(platform != nullptr);
/* first try to get the necessary extension */
clGetGLContextInfoKHR_fn clGetGLContextInfoKHR = (clGetGLContextInfoKHR_fn) clGetExtensionFunctionAddress("clGetGLContextInfoKHR");
if (clGetGLContextInfoKHR == nullptr)
{
ERRORM("clGetGLContextInfoKHR extension function not supproted.");
return false;
}
#if defined(FLUIDSIM_OS_MAC)
cl_context_properties props[] = {
CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE,
(cl_context_properties) CGLGetShareGroup(CGLGetCurrentContext()),
0
};
cl_int err = clGetGLContextInfoKHR(props, // the OpenGL context
CL_CURRENT_DEVICE_FOR_GL_CONTEXT_KHR, // get the id of the device currently executing OpenGL
sizeof(*device),
device,
nullptr);
if (err != CL_SUCCESS)
{
ERRORM("Failed to retrieve the OpenCL id of the device executing OpenGL: " << errorToStr(err));
return false;
}
/* get the platform associated with the device */
err = clGetDeviceInfo(*device, CL_DEVICE_PLATFORM, sizeof(*platform), platform, nullptr);
if (err != CL_SUCCESS)
{
ERRORM("Failed to retirieve platform id for the device executing OpenGL: " << errorToStr(err));
return false;
}
#else
cl_context_properties props[] = {
#if defined(FLUIDSIM_OS_UNIX)
CL_GL_CONTEXT_KHR, (cl_context_properties) glXGetCurrentContext(),
CL_GLX_DISPLAY_KHR, (cl_context_properties) glXGetCurrentDisplay(),
CL_CONTEXT_PLATFORM, (cl_context_properties) nullptr,
#elif defined(FLUIDSIM_OS_WIN)
CL_GL_CONTEXT_KHR, (cl_context_properties) wglGetCurrentContext(),
CL_WGL_HDC_KHR, (cl_context_properties) wglGetCurrentDC(),
CL_CONTEXT_PLATFORM, (cl_context_properties) nullptr,
#else
# error "Unsupported OS platform"
#endif
0
};
std::vector<boost::compute::platform> platform_list = boost::compute::system::platforms();
for (const boost::compute::platform & p : platform_list)
{
WARNM("platform: " << p.name());
props[5] = (cl_context_properties) p.id();
cl_int err = clGetGLContextInfoKHR(props, // the OpenGL context
CL_CURRENT_DEVICE_FOR_GL_CONTEXT_KHR, // get the id of the device currently executing OpenGL
sizeof(*device),
device,
nullptr);
if ((err == CL_SUCCESS) && (boost::compute::device(*device).type() == CL_DEVICE_TYPE_GPU))
{
*platform = (cl_platform_id) props[5];
return true;
}
else
{
WARNM("clGetGLContextInfoKHR: " << errorToStr(err));
}
}
#endif
return false;
}
bool initCLGLContext(boost::compute::context & ctx)
{
INFOM("Initializing OpenCL/OpenGL shared context");
#if 1
/* select appropriate device and platform */
cl_platform_id platform = nullptr;
cl_device_id device = nullptr;
if ((!utils::ocl::selectGLDeviceAndPlatform(&device, &platform)) &&
(!utils::ocl::selectPlatformAndDevice(&device, &platform)))
{
ERRORM("Failed to select an appropriate device or platform");
return false;
}
/* setup context */
cl_context_properties props[] = {
#if defined(FLUIDSIM_OS_MAC)
CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE,
(cl_context_properties) CGLGetShareGroup(CGLGetCurrentContext()),
#elif defined(FLUIDSIM_OS_UNIX)
CL_GL_CONTEXT_KHR, (cl_context_properties) glXGetCurrentContext(),
CL_GLX_DISPLAY_KHR, (cl_context_properties) glXGetCurrentDisplay(),
CL_CONTEXT_PLATFORM, (cl_context_properties) platform,
#elif defined(FLUIDSIM_OS_WIN)
CL_GL_CONTEXT_KHR, (cl_context_properties) wglGetCurrentContext(),
CL_WGL_HDC_KHR, (cl_context_properties) wglGetCurrentDC(),
CL_CONTEXT_PLATFORM, (cl_context_properties) platform,
#else
# error "Unsupported OS platform"
#endif
0
};
/* create opencl context */
cl_int err = CL_SUCCESS;
cl_context ctx_ = clCreateContext(props, 1, &device, nullptr, nullptr, &err);
if (err != CL_SUCCESS)
{
ERRORM("Failed to create OpenCL context: " << utils::ocl::errorToStr(err));
return false;
}
ctx = boost::compute::context(ctx_, false);
utils::ocl::printDeviceInfo(ctx.get_devices());
#else
try
{
/* create opencl context */
ctx = boost::compute::opengl_create_shared_context();
utils::ocl::printDeviceInfo(ctx.get_devices());
}
catch (const boost::compute::opencl_error & e)
{
ERRORM(e.what());
return false;
}
catch (const boost::compute::unsupported_extension_error & e)
{
ERRORM(e.what());
return false;
}
catch (const std::exception & e)
{
ERRORM("An unexpected error occured during opencl context initialization: " << e.what());
return false;
}
#endif
INFOM("Successfully initialized OpenCL context");
INFOM("Using device : " << ctx.get_device().name());
INFOM("Using platform : " << ctx.get_device().platform().name());
return true;
}
bool RayCastRenderer::resetTransferFunctionTexture(void)
{
F();
// nahratie dat do textury
if (!m_transfer_func.create())
{
ERRORM("Failed to create OpenGL 1D texture for transfer function");
return false;
}
static constexpr int n = 1024;
static constexpr float factor = 255.0f / float(n);
unsigned char *pixels = new unsigned char[n * 4];
#define BLUE_FOAM_CLEAR_WATER
for (int i = 0; i < n; ++i)
{
#ifdef BLUE_FOAM_CLEAR_WATER
//if (i < 5)
//if (i < -1)
if (i > 256)
{
pixels[i * 4 + 0] = 0; // red
pixels[i * 4 + 1] = 0; // green
pixels[i * 4 + 2] = i * factor; // blue
pixels[i * 4 + 3] = 0;
}
else
{
pixels[i * 4 + 0] = 0; // red
pixels[i * 4 + 1] = 0; // green
pixels[i * 4 + 2] = i * factor; // blue
//pixels[i * 4 + 3] = i * factor; //255;
pixels[i * 4 + 3] = i * factor; //255;
}
#elif YELLOW_GREEN_WATER
if (i > 256)
{
pixels[i * 4 + 0] = 0; // red
pixels[i * 4 + 1] = 0; // green
pixels[i * 4 + 2] = i * factor; // blue
pixels[i * 4 + 3] = 0;
}
else
{
pixels[i * 4 + 0] = i * i * factor; // red
pixels[i * 4 + 1] = i * i * factor; // green
pixels[i * 4 + 2] = i * factor; // blue
pixels[i * 4 + 3] = i * factor; //255;
}
#elif GRAY_WATER
if (i > 256)
{
pixels[i * 4 + 0] = 0; // red
pixels[i * 4 + 1] = 0; // green
pixels[i * 4 + 2] = i * factor; // blue
pixels[i * 4 + 3] = 0;
}
else
{
pixels[i * 4 + 0] = i * i * factor; // red
pixels[i * 4 + 1] = i * i * factor; // green
pixels[i * 4 + 2] = i * i * factor; // blue
pixels[i * 4 + 3] = i * factor; //255;
}
#else
if (i > 256)
{
pixels[i * 4 + 0] = 0; // red
pixels[i * 4 + 1] = 0; // green
pixels[i * 4 + 2] = i * factor; // blue
pixels[i * 4 + 3] = 10 / i;
}
else
{
pixels[i * 4 + 0] = i * factor; // red
pixels[i * 4 + 1] = i * factor; // green
pixels[i * 4 + 2] = (256 / i) * factor; // blue
pixels[i * 4 + 3] = i * factor; //255;
}
#endif
}
m_transfer_func.bind();
OGLF->glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
OGLF->glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
OGLF->glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
OGLF->glTexImage1D(GL_TEXTURE_1D, 0, GL_RGBA, n, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
OGLF->glBindTexture(GL_TEXTURE_1D, 0);
delete [] pixels;
return true;
}