demotool/combine.cc

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2017-10-01 18:51:02 +02:00
#include "externals.hh"
#include "combine.hh"
#include "bloom.hh"
#include "profiling.hh"
namespace {
static const std::string Name_( "Combine" );
}
#define PSTART() T_Profiler::Profiler.start( Name_ )
#define PEND() do { glFinish( ); T_Profiler::Profiler.end( Name_ ); } while ( 0 )
T_CombinePass::T_CombinePass(
__rw__ T_FilesWatcher& watcher ,
__rw__ T_Texture& image ,
__rw__ T_Texture& bloom )
: txImage_( image ) , txBloom_( bloom ) ,
program_( GL_FRAGMENT_SHADER , watcher ) ,
bloomStrength_( 0.45 ) ,
bloomAttenuation_( 0.3 )
{
program_.addFile( "combine.glsl" );
program_.load( );
}
void T_CombinePass::render( )
{
PSTART( );
T_Rendertarget::MainOutput( );
glClearColor( 1 , 0 , 1 , 1 );
glClear( GL_COLOR_BUFFER_BIT );
if ( program_.activate( ) ) {
auto& tm( T_TextureManagement::TM( ) );
tm.bind( 0 , txImage_ );
tm.bind( 1 , txBloom_ );
glUniform1i( 0 , 0 );
glUniform1i( 1 , 1 );
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glUniform2f( 2 , txImage_.width( ) , txImage_.height( ) );
glUniform2f( 3 , bloomStrength_ , bloomAttenuation_ );
glRectf( -1, -1 , 1 , 1 );
glBindTexture( GL_TEXTURE_2D , 0 );
}
PEND( );
}
void T_CombinePass::makeUI( )
{
if ( !ImGui::CollapsingHeader( "Combine" ) ) {
return;
}
ImGui::DragFloat( "Bloom strength" , &bloomStrength_ , .001f , 0. , 10 );
ImGui::DragFloat( "Bloom attenuation" , &bloomAttenuation_ , .001f , 0. , 1 );
}