| 1 | // Copyright (C) 2016-2016 ChaosForge Ltd
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| 2 | // http://chaosforge.org/
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| 3 | //
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| 4 | // This file is part of Nova libraries.
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| 5 | // For conditions of distribution and use, see copying.txt file in root folder.
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| 6 |
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| 7 | #include "nv/engine/renderer.hh"
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| 8 |
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| 9 | #include "nv/core/profiler.hh"
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| 10 |
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| 11 | using namespace nv;
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| 12 |
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| 13 | renderer::renderer( context* ctx )
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| 14 | : m_context( ctx )
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| 15 | {
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| 16 | for ( auto& i : m_statistics ) i = 0;
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| 17 |
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| 18 | struct qvtx
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| 19 | {
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| 20 | nv::vec2 position;
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| 21 | nv::vec2 texcoord;
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| 22 | };
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| 23 |
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| 24 | qvtx quad[] = {
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| 25 | qvtx{ vec2( -1.0f,-1.0f ), vec2( 0.0f, 0.0f ) },
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| 26 | qvtx{ vec2( 1.0f,-1.0f ), vec2( 1.0f, 0.0f ) },
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| 27 | qvtx{ vec2( 1.0f,1.0f ), vec2( 1.0f, 1.0f ) },
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| 28 | qvtx{ vec2( 1.0f,1.0f ), vec2( 1.0f, 1.0f ) },
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| 29 | qvtx{ vec2( -1.0f,1.0f ), vec2( 0.0f, 1.0f ) },
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| 30 | qvtx{ vec2( -1.0f,-1.0f ), vec2( 0.0f, 0.0f ) },
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| 31 | };
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| 32 | m_quad = m_context->create_vertex_array( quad, 6, STATIC_DRAW );
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| 33 | }
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| 34 |
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| 35 | void renderer::sort()
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| 36 | {
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| 37 | stable_sort( m_elements.begin(), m_elements.end(), renderer_element_compare() );
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| 38 | }
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| 39 |
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| 40 |
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| 41 | void renderer::render( const scene_state& s, const render_pass& pass )
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| 42 | {
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| 43 | scene_state ss( s );
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| 44 | m_context->bind( pass.fbuffer, FRAMEBUFFER );
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| 45 | m_context->set_draw_buffers( pass.output_count, pass.output );
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| 46 | m_context->set_viewport( ss.get_viewport() );
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| 47 |
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| 48 | if ( pass.cstate.buffers != buffer_mask::NO_BUFFER )
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| 49 | m_context->clear( pass.cstate );
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| 50 |
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| 51 | for ( uint32 i = 0; i < size( pass.binds ); ++i )
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| 52 | if ( pass.binds[i] )
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| 53 | m_context->bind( pass.binds[i], texture_slot( i ) );
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| 54 |
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| 55 | resource_id current_mat;
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| 56 | mat4 model = ss.get_model();
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| 57 | for ( const renderer_element& element : m_elements )
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| 58 | if ( match( element.flags, pass ) )
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| 59 | {
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| 60 | ss.set_model( model * element.model.extract() );
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| 61 | if ( auto mesh = element.mesh.lock() )
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| 62 | if ( mesh->count > 0 )
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| 63 | if ( auto program = pass.programs[mesh->shader].lock() )
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| 64 | {
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| 65 | if ( element.mat.id() != current_mat )
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| 66 | {
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| 67 | if ( auto mat = element.mat.lock() )
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| 68 | {
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| 69 | for ( uint32 i = 0; i < 8; ++i )
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| 70 | if ( mat->textures[i] && !pass.binds[i] )
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| 71 | m_context->bind( mat->textures[i], nv::texture_slot( i ) );
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| 72 | current_mat = element.mat.id();
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| 73 | }
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| 74 | }
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| 75 |
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| 76 | m_context->get_device()->set_opt_uniform( *program, "nv_bone_offset", element.bone_offset );
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| 77 | m_context->get_device()->set_opt_uniform( *program, "nv_flags", unsigned( *element.flags.data() ) );
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| 78 |
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| 79 | m_context->apply_engine_uniforms( *program, ss );
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| 80 | m_context->draw( TRIANGLES, pass.rstate, *program, mesh->va, mesh->count );
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| 81 |
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| 82 | m_statistics[TRIANGLE_COUNT] += mesh->count / 3;
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| 83 | m_statistics[DRAW_CALL]++;
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| 84 | }
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| 85 | }
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| 86 |
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| 87 | m_context->bind( pass.fbuffer, FRAMEBUFFER );
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| 88 | }
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| 89 |
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| 90 | void renderer::render( const scene_state& ss, const render_pass& pass, vertex_array va, uint32 va_count, uint32 program_idx )
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| 91 | {
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| 92 | m_context->bind( pass.fbuffer, FRAMEBUFFER );
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| 93 | m_context->set_draw_buffers( pass.output_count, pass.output );
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| 94 | m_context->set_viewport( ss.get_viewport() );
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| 95 |
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| 96 | if ( pass.cstate.buffers != buffer_mask::NO_BUFFER )
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| 97 | m_context->clear( pass.cstate );
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| 98 |
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| 99 | for ( uint32 i = 0; i < size( pass.binds ); ++i )
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| 100 | if ( pass.binds[i] )
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| 101 | m_context->bind( pass.binds[i], texture_slot(i) );
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| 102 |
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| 103 | if ( auto program = pass.programs[program_idx].lock() )
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| 104 | {
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| 105 | m_context->apply_engine_uniforms( *program, ss );
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| 106 | m_context->draw( TRIANGLES, pass.rstate, *program, va, va_count );
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| 107 | m_statistics[ TRIANGLE_COUNT ] += 2;
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| 108 | m_statistics[ DRAW_CALL ]++;
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| 109 | }
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| 110 |
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| 111 | m_context->bind( pass.fbuffer, FRAMEBUFFER );
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| 112 | }
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| 113 |
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| 114 | void nv::renderer::render_direct( const scene_state& s, const render_pass& pass, const nv::array_view< renderer_direct_element >& elements, uint32 program_idx )
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| 115 | {
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| 116 | if ( m_elements.size() == 0 ) return;
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| 117 |
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| 118 | scene_state ss( s );
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| 119 | m_context->bind( pass.fbuffer, FRAMEBUFFER );
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| 120 | m_context->set_draw_buffers( pass.output_count, pass.output );
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| 121 | m_context->set_viewport( ss.get_viewport() );
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| 122 |
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| 123 |
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| 124 | if ( pass.cstate.buffers != buffer_mask::NO_BUFFER )
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| 125 | m_context->clear( pass.cstate );
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| 126 |
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| 127 | for ( uint32 i = 0; i < size( pass.binds ); ++i )
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| 128 | if ( pass.binds[i] )
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| 129 | m_context->bind( pass.binds[i], texture_slot( i ) );
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| 130 |
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| 131 | resource_id current_mat;
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| 132 | resource_id current_prog;
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| 133 |
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| 134 | mat4 model = ss.get_model();
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| 135 | for ( uint32 index = 0; index < elements.size(); ++index )
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| 136 | {
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| 137 | const renderer_direct_element& element = elements[index];
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| 138 | if ( match( element.flags, pass ) )
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| 139 | {
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| 140 | ss.set_model( model * element.model.extract() );
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| 141 | if ( element.count > 0 )
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| 142 | {
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| 143 | if ( auto program = element.programs[program_idx].lock() )
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| 144 | {
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| 145 | if ( element.material.id() != current_mat )
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| 146 | {
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| 147 | if ( auto mat = element.material.lock() )
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| 148 | {
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| 149 | for ( uint32 i = 0; i < 8; ++i )
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| 150 | if ( mat->textures[i] && !pass.binds[i] )
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| 151 | m_context->bind( mat->textures[i], nv::texture_slot( i ) );
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| 152 | current_mat = element.material.id();
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| 153 | }
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| 154 | }
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| 155 |
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| 156 | m_context->get_device()->set_opt_uniform( *program, "nv_flags", unsigned( *element.flags.data() ) );
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| 157 | m_context->get_device()->set_opt_uniform( *program, "nv_index", unsigned( index ) );
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| 158 | m_context->apply_engine_uniforms( *program, ss );
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| 159 |
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| 160 | if ( element.instances > 0 )
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| 161 | m_context->draw_instanced( TRIANGLES, pass.rstate, *program, element.instances, element.va, element.count, element.first );
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| 162 | else
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| 163 | m_context->draw( TRIANGLES, pass.rstate, *program, element.va, element.count, element.first );
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| 164 |
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| 165 | m_statistics[TRIANGLE_COUNT] += ( element.count / 3 ) * max< uint32 >( element.instances, 1 );
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| 166 | m_statistics[DRAW_CALL]++;
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| 167 | }
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| 168 | }
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| 169 | }
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| 170 | }
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| 171 | m_context->bind( pass.fbuffer, FRAMEBUFFER );
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| 172 | }
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