void StochasticRenderer::create_texture(
kvs::Texture2D& texture,
kvs::glew::FrameBufferObject& framebuffer,
GLint internal_format,
GLenum external_format,
GLenum external_type,
GLenum attachment )
{
texture.release();
texture.setWrapS( GL_CLAMP_TO_EDGE );
texture.setWrapT( GL_CLAMP_TO_EDGE );
texture.setMagFilter( GL_LINEAR );
texture.setMinFilter( GL_LINEAR );
texture.setPixelFormat( internal_format, external_format, external_type );
texture.create( m_width, m_height );
{
GLenum error = glGetError();
if ( error != GL_NO_ERROR )
{
kvsMessageError( "color buffer allocation failed: %s.", gluErrorString(error));
exit( EXIT_FAILURE );
}
}
glFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_2D, texture.id(), 0 );
texture.unbind();
}
void FrameBufferObject::attachDepthTexture( const kvs::Texture2D& texture, const int mip_level ) const
{
GuardedBinder binder( *this );
const GLuint id = texture.id();
const GLenum attachment = GL_DEPTH_ATTACHMENT;
const GLenum type = GL_TEXTURE_2D;
KVS_GL_CALL( glFramebufferTexture2D( GL_FRAMEBUFFER, attachment, type, id, mip_level ) );
}
/*===========================================================================*/
void FrameBufferObject::attachColorTexture( const kvs::Texture2D& texture, const size_t color_buffer, const int mip_level ) const
{
KVS_ASSERT( static_cast<GLint>( color_buffer ) < kvs::OpenGL::MaxColorAttachments() );
GuardedBinder binder( *this );
const GLuint id = texture.id();
const GLenum attachment = GL_COLOR_ATTACHMENT0 + color_buffer;
const GLenum type = GL_TEXTURE_2D;
KVS_GL_CALL( glFramebufferTexture2D( GL_FRAMEBUFFER, attachment, type, id, mip_level ) );
}
void BufferObject::create(
const kvs::cl::Context& context,
const kvs::Texture2D& texture )
{
if ( m_is_created )
{
kvsMessageError( "Buffer is already created." );
return;
}
cl_int result = CL_SUCCESS;
const cl_mem_flags flags = static_cast<cl_mem_flags>( m_access_type );
m_memory = clCreateFromGLTexture2D(
context.context(), flags, GL_TEXTURE_2D, 0, texture.id(), &result );
if ( result != CL_SUCCESS )
{
kvsMessageError( "OpenCL; %s.", kvs::cl::ErrorString( result ) );
return;
}
m_is_created = true;
m_size = 0;
}