demotool/dof.cc

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#include "externals.hh"
#include "dof.hh"
#include "profiling.hh"
#include "globals.hh"
#include "odbg.hh"
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#include "sync.hh"
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namespace {
static const std::string Name_( "DoF" );
}
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#define PSTART() Globals::Profiler( ).start( Name_ )
#define PEND() do { glFinish( ); Globals::Profiler( ).end( Name_ ); } while ( 0 )
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T_DoFPass::T_DoFPass(
__rw__ T_Texture& imageInput ,
__rw__ T_Texture& depthInput )
: imageInput_( imageInput ) , depthInput_( depthInput ) ,
txPass1_( imageInput.width( ) , imageInput.height( ) ,
E_TexType::RGB16F ) ,
txOutput_( imageInput.width( ) , imageInput.height( ) ,
E_TexType::RGB16F ) ,
rtPass1_( T_RendertargetSetup( ).add( txPass1_ ).create( ) ) ,
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rtPass2_( T_RendertargetSetup( ).add( txOutput_ ).create( ) )
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{
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txPass1_.wrap( E_TexWrap::CLAMP_EDGE );
Globals::ODbg( ).registerTexture( txPass1_ , E_ODbgMode::HDR , "DoF 1st pass" );
Globals::ODbg( ).registerTexture( txOutput_ , E_ODbgMode::HDR , "DoF output" );
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spPass1_ = Globals::Shaders( ).pipeline({
"fullscreen.v.glsl" , "dof-pass1.f.glsl" });
spPass2_ = Globals::Shaders( ).pipeline({
"fullscreen.v.glsl" , "dof-pass2.f.glsl" });
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}
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void T_DoFPass::render( )
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{
PSTART( );
enum {
U_INPUT = 0 ,
U_DEPTH = 1 ,
U_PARAMS = 2 ,
U_SAMPLES = 3 ,
U_RES_TIME = 4
};
using namespace cops;
auto& tm( Globals::Textures( ) );
const auto idPass1( spPass1_.program( E_ShaderType::FRAGMENT ) );
const auto idPass2( spPass2_.program( E_ShaderType::FRAGMENT ) );
const auto idSampler( tm.sampler( "linear-edge" )->id( ) );
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T_Program program;
program.function( "SetDofUniforms" , 1 )
<< OPLoadVariable( "height" )
<< OPLoadVariable( "width" )
<< OPLoadConstant( 0 )
<< OPLoadConstant( 0 )
<< OPLoadVariable( "time" )
<< OPLoadVariable( "height" )
<< OPLoadVariable( "width" )
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<< OPLoadConstant( U_RES_TIME )
<< OPDup( 8 )
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<< OPLoadInput( "dof:samples" )
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<< OPLoadConstant( U_SAMPLES )
<< OPDup( 11 )
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<< OPLoadInput( "dof:max-blur" )
<< OPLoadInput( "dof:falloff" )
<< OPLoadInput( "dof:sharp-range" )
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<< OPLoadInput( "dof:sharp-distance" )
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<< OPLoadConstant( U_PARAMS )
<< OPDup( 17 )
<< OPLoadConstant( 1 )
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<< OPLoadConstant( U_DEPTH )
<< OPDup( 20 )
<< OPLoadConstant( 0 )
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<< OPLoadConstant( U_INPUT )
<< OPDup( 23 )
<< OPSetUniform( 1 , true )
<< OPSetUniform( 1 , true )
<< OPSetUniform( 4 , false )
<< OPSetUniform( 1 , false )
<< OPSetUniform( 3 , false )
<< OPSetViewport( )
;
program.main
// First pass
<< OPLoadConstant( idPass1 )
<< OPCall( "SetDofUniforms" )
<< OPUseTexture( 0 , imageInput_.id( ) , idSampler )
<< OPUseTexture( 1 , depthInput_.id( ) , idSampler )
<< OPUsePipeline( spPass1_.id( ) )
<< OPUseFramebuffer( rtPass1_.id( ) )
<< OPFullscreen( )
// Second pass
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<< OPLoadConstant( idPass2 )
<< OPCall( "SetDofUniforms" )
<< OPUseTexture( 0 , txPass1_.id( ) , idSampler )
<< OPUsePipeline( spPass2_.id( ) )
<< OPUseFramebuffer( rtPass2_.id( ) )
<< OPFullscreen( )
;
GL_CHECK( {
printf( "GL fail in DoF" );
} );
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T_Context ctx;
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ctx.store( "time" , Globals::Sync( ).time( ) );
ctx.store( "width" , imageInput_.width( ) );
ctx.store( "height" , imageInput_.height( ) );
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program.execute( ctx );
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PEND( );
}
void T_DoFPass::makeUI( )
{
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#if 0
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if ( !ImGui::CollapsingHeader( "Depth of field" ) ) {
return;
}
ImGui::DragFloat( "Sharp distance" , filterParams_ , .25 , 0.25 , 1000 );
ImGui::DragFloat( "Sharp range" , &filterParams_[ 1 ] , .1 , 0.1 , 100 );
ImGui::DragFloat( "Blur falloff" , &filterParams_[ 2 ] , .5 , 0.5 , 1000 );
ImGui::DragFloat( "Max blur" , &filterParams_[ 3 ] , .1 , .1 , 100 );
ImGui::DragInt( "Samples" , &nSamples_ , .2 , 1 , 32 );
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#endif
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}