127 lines
3.4 KiB
C++
127 lines
3.4 KiB
C++
#include "externals.hh"
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#include "utilities.hh"
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#include "texture.hh"
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#include "rendertarget.hh"
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#include "bloom.hh"
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T_BloomPass::T_BloomPass(
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__rd__ const uint32_t width ,
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__rd__ const uint32_t height ,
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__rw__ T_FilesWatcher& watcher ,
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__rw__ T_Texture& input )
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: input_( input ) ,
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spHighpass_( GL_FRAGMENT_SHADER , watcher ) ,
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spBlur_( GL_FRAGMENT_SHADER , watcher ) ,
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spCombine_( GL_FRAGMENT_SHADER , watcher ) ,
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//
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txInput_( width , height , E_TexType::RGB16F ) ,
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rtInput_( T_RendertargetSetup( ).add( txInput_ , 0 ).create( ) ) ,
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//
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txBlur0_( width , height , E_TexType::RGB16F , BloomLevels ) ,
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txBlur1_( width , height , E_TexType::RGB16F , BloomLevels )
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{
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txInput_.wrap( E_TexWrap::CLAMP_BORDER ).samplingMode( E_TexSampling::LINEAR );
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txBlur0_.wrap( E_TexWrap::CLAMP_EDGE ).samplingMode( E_TexSampling::LINEAR );
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txBlur1_.wrap( E_TexWrap::CLAMP_EDGE ).samplingMode( E_TexSampling::LINEAR );
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for ( int i = 0 ; i < 5 ; i ++ ) {
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rtBlur0_.push_back( T_RendertargetSetup( ).add( txBlur0_ , i ).create( ) );
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rtBlur1_.push_back( T_RendertargetSetup( ).add( txBlur1_ , i ).create( ) );
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}
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spHighpass_.addFile( "bloom-highpass.glsl" );
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spBlur_.addFile( "blur-pass.glsl" );
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spCombine_.addFile( "bloom-combine.glsl" );
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spHighpass_.load( );
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spBlur_.load( );
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spCombine_.load( );
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}
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void T_BloomPass::render( )
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{
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if ( spHighpass_.activate( ) ) {
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enum {
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U_TEXTURE = 0 ,
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U_LOD = 1 ,
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U_INPUT_SIZE = 2 ,
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U_PARAMS = 3 ,
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};
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rtInput_.activate( );
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T_TextureBinding tb( 0 );
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tb.set( U_TEXTURE , input_ );
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tb.bind( );
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glUniform1i( U_LOD , 0 );
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glUniform2f( U_INPUT_SIZE ,
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input_.width( ) ,
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input_.height( ) );
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glUniform3f( U_PARAMS , 1.6 , 1.2 , .95 );
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glRectf( -1, -1 , 1 , 1 );
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}
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if ( spBlur_.activate( ) ) {
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enum {
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U_TEXTURE = 0 ,
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U_OUTPUT_SIZE = 1 ,
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U_INPUT_SIZE = 2 ,
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U_SOURCE_LOD = 3 ,
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U_DIRECTION = 4 ,
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U_WEIGHTS = 5 ,
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};
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glUniform4f( U_WEIGHTS , 0.324 , 0.232 , 0.0855 , 0.0205 );
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for ( int i = 0 ; i < 5 ; i ++ ) {
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// IB RMO B0 B1 B0 B1 B0
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// OB B0/0 B1/0 B0/1 B1/1 B0/2 B1/2
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// SLOD: 0 0 0 1 1 2
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// IW: W W W W/2 W/2 W/4
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// OW: W W W/2 W/2 W/4 W/4
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T_TextureBinding tb( 0 );
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uint32_t w , h;
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if ( i == 0 ) {
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tb.set( U_TEXTURE , input_ );
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w = input_.width( );
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h = input_.height( );
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} else {
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tb.set( U_TEXTURE , txBlur1_ );
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w = txBlur1_.width( ) >> ( i - 1 );
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h = txBlur1_.height( ) >> ( i - 1 );
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}
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const uint32_t slod = i > 0 ? ( i - 1 ) : 0;
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rtBlur0_[ i ].activate( );
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glUniform2f( U_OUTPUT_SIZE , rtBlur0_[ i ].width( ) ,
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rtBlur0_[ i ].height( ) );
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glUniform1i( U_SOURCE_LOD , slod );
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glUniform2f( U_INPUT_SIZE , w , h );
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glUniform2f( U_DIRECTION , 1 , 0 );
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tb.bind( );
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glRectf( -1 , -1 , 1 , 1 );
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rtBlur1_[ i ].activate( );
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tb.set( U_TEXTURE , txBlur0_ );
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tb.bind( );
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glUniform2f( U_DIRECTION , 0 , 1 );
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glUniform1i( U_SOURCE_LOD , i );
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glUniform2f( U_INPUT_SIZE ,
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rtBlur0_[ i ].width( ) ,
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rtBlur0_[ i ].height( ) );
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glRectf( -1 , -1 , 1 , 1 );
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}
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}
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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 ( spCombine_.activate( ) ) {
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T_TextureBinding main( 0 ) , blur( 1 );
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main.set( 0 , input_ );
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main.bind( );
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blur.set( 1 , txBlur1_ );
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blur.bind( );
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glUniform2f( 2 , input_.width( ) , input_.height( ) );
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glRectf( -1, -1 , 1 , 1 );
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glBindTexture( GL_TEXTURE_2D , 0 );
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}
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}
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