demotool/combine.cc
2017-10-04 18:06:39 +02:00

58 lines
1.4 KiB
C++

#include "externals.hh"
#include "combine.hh"
#include "bloom.hh"
#include "profiling.hh"
#include "globals.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_Texture& image ,
__rw__ T_Texture& bloom )
: txImage_( image ) , txBloom_( bloom ) ,
bloomStrength_( 0.45 ) ,
bloomAttenuation_( 0.3 )
{
program_ = Globals::Shaders( ).pipeline({
"fullscreen.v.glsl" , "combine.f.glsl" });
}
void T_CombinePass::render( )
{
PSTART( );
T_Rendertarget::MainOutput( );
glClearColor( 1 , 0 , 1 , 1 );
glClear( GL_COLOR_BUFFER_BIT );
if ( program_.valid( ) ) {
auto& tm( Globals::Textures( ) );
tm.bind( 0 , txImage_ );
tm.bind( 1 , txBloom_ );
const auto id( program_.program( E_ShaderType::FRAGMENT ) );
program_.enable( );
glProgramUniform1i( id , 0 , 0 );
glProgramUniform1i( id , 1 , 1 );
glProgramUniform2f( id , 2 , txImage_.width( ) , txImage_.height( ) );
glProgramUniform2f( id , 3 , bloomStrength_ , bloomAttenuation_ );
glDrawArrays( GL_TRIANGLE_STRIP , 0 , 4 );
}
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 );
}