62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
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#include "externals.hh"
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#include "fxaa.hh"
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#include "profiling.hh"
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#include "globals.hh"
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namespace {
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static const std::string Name_( "FXAA" );
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}
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#define PSTART() Globals::Profiler( ).start( Name_ )
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#define PEND() do { glFinish( ); Globals::Profiler( ).end( Name_ ); } while ( 0 )
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T_FXAAPass::T_FXAAPass(
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__rw__ T_Texture& input )
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: txInput_( input ) ,
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parameters_{ .5 , .166 , .0833 }
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{
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program_ = Globals::Shaders( ).pipeline({
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"fullscreen.v.glsl" , "fxaa.f.glsl" });
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}
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void T_FXAAPass::render( )
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{
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PSTART( );
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T_Rendertarget::MainOutput( );
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glClearColor( 1 , 0 , 1 , 1 );
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glClear( GL_COLOR_BUFFER_BIT );
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if ( program_.valid( ) ) {
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enum {
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U_INPUT ,
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U_RESOLUTION ,
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U_PARAMETERS ,
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};
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auto& tm( Globals::Textures( ) );
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tm.bind( 0 , txInput_ );
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const auto id( program_.program( E_ShaderType::FRAGMENT ) );
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program_.enable( );
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glProgramUniform1i( id , U_INPUT , 0 );
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glProgramUniform2f( id , U_RESOLUTION ,
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txInput_.width( ) , txInput_.height( ) );
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glProgramUniform3fv( id , U_PARAMETERS , 1 , parameters_ );
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glDrawArrays( GL_TRIANGLE_STRIP , 0 , 4 );
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}
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PEND( );
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}
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void T_FXAAPass::makeUI( )
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{
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using namespace ImGui;
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if ( !CollapsingHeader( "FXAA" ) ) {
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return;
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}
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DragFloat( "Sub-pixel q." , ¶meters_[ 0 ] , .001f , 0 , 1 );
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DragFloat( "Edge threshold" , ¶meters_[ 1 ] , .0001f , .063 , .333 );
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DragFloat( "Edge threshold min" , ¶meters_[ 2 ] , .0001f , .0312 , .0833 );
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}
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