| 1 | // Copyright (C) 2012-2015 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 | /**
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| 8 | * @file gl_context.hh
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| 9 | * @author Kornel Kisielewicz epyon@chaosforge.org
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| 10 | * @brief Context class
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| 11 | */
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| 12 |
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| 13 | #ifndef NV_GL_CONTEXT_HH
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| 14 | #define NV_GL_CONTEXT_HH
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| 15 |
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| 16 | #include <nv/interface/context.hh>
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| 17 |
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| 18 | namespace nv
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| 19 | {
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| 20 | struct gl_framebuffer_info : public framebuffer_info
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| 21 | {
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| 22 | unsigned glid;
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| 23 | unsigned depth_rb_glid;
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| 24 | };
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| 25 |
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| 26 | struct gl_vertex_array_info : public vertex_array_info
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| 27 | {
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| 28 | unsigned glid;
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| 29 | };
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| 30 |
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| 31 |
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| 32 | class gl_context : public context
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| 33 | {
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| 34 | public:
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| 35 | gl_context( device* a_device, void* a_handle );
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| 36 | virtual ~gl_context();
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| 37 |
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| 38 | virtual vertex_array create_vertex_array( const vertex_array_desc& desc );
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| 39 | virtual framebuffer create_framebuffer( uint32 temp_samples = 1 );
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| 40 | virtual void release( vertex_array va );
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| 41 | virtual void release( framebuffer f );
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| 42 | virtual const framebuffer_info* get_framebuffer_info( framebuffer f ) const;
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| 43 |
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| 44 | virtual void set_draw_buffers( uint32 count, const output_slot* slots );
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| 45 | virtual void set_draw_buffer( output_slot slot );
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| 46 | virtual void set_read_buffer( output_slot slot );
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| 47 | virtual void blit( framebuffer f, clear_state::buffers_type mask, ivec2 src1, ivec2 src2, ivec2 dst1, ivec2 dst2 );
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| 48 | virtual void blit( framebuffer from, framebuffer to, clear_state::buffers_type mask, ivec2 src1, ivec2 src2, ivec2 dst1, ivec2 dst2 );
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| 49 |
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| 50 | virtual void attach( framebuffer f, output_slot slot, texture t );
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| 51 | virtual void attach( framebuffer f, texture depth, int layer = -1 );
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| 52 | virtual void attach( framebuffer f, ivec2 size );
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| 53 | virtual bool check( framebuffer_slot ft );
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| 54 | virtual void bind( framebuffer f, framebuffer_slot ft = FRAMEBUFFER );
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| 55 | virtual void bind( texture t, texture_slot slot );
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| 56 | virtual void bind( buffer b, uint32 index, size_t offset = 0, size_t size = 0 );
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| 57 | virtual void bind( buffer b, texture t );
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| 58 |
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| 59 |
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| 60 | virtual void update( texture t, const void* data );
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| 61 | virtual void update( buffer b, const void* data, size_t offset, size_t size );
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| 62 | virtual void* map_buffer( buffer, buffer_access, size_t /*offset*/, size_t /*length*/ );
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| 63 | virtual void unmap_buffer( buffer );
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| 64 |
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| 65 | // virtual void update( buffer b, uint32 index, const void* data, size_t offset, size_t size );
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| 66 |
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| 67 | virtual void clear( const clear_state& cs );
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| 68 | // temporary
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| 69 | virtual void draw( primitive prim, const render_state& rs, program p, vertex_array va, size_t count, size_t first = 0 );
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| 70 | virtual const ivec4& get_viewport();
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| 71 | virtual void set_viewport( const ivec4& viewport );
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| 72 | virtual void apply_render_state( const render_state& state );
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| 73 | virtual void apply_engine_uniforms( program p, const scene_state& s );
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| 74 | // TODO: remove
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| 75 | void* get_native_handle() { return m_handle; }
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| 76 |
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| 77 | protected:
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| 78 | void bind( program p );
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| 79 | // void bind( buffer b );
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| 80 | void bind( vertex_array va );
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| 81 | void unbind( program p );
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| 82 | // void unbind( buffer b );
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| 83 | void unbind( vertex_array va );
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| 84 | void unbind( framebuffer va );
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| 85 |
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| 86 | void force_apply_render_state( const render_state& state );
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| 87 | void force_apply_stencil_face( unsigned face, const stencil_test_face& stencil );
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| 88 | private:
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| 89 | void apply_stencil_test( const stencil_test& stencil );
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| 90 | void apply_stencil_face( unsigned face, stencil_test_face& stencil, const stencil_test_face& new_stencil );
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| 91 | void apply_scissor_test( const scissor_test& scissor );
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| 92 | void apply_depth_test( const depth_test& depth );
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| 93 | void apply_depth_mask( bool mask );
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| 94 | void apply_multisample( bool multisample );
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| 95 | void apply_depth_range( const depth_range& range );
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| 96 | void apply_color_mask( const color_mask& mask );
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| 97 | void apply_blending( const blending& blend );
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| 98 | void apply_culling( const culling& cull );
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| 99 | void apply_polygon_mode( const polygon_mode& mode );
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| 100 | void enable( unsigned int what, bool value );
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| 101 | void set_active_texture( texture_slot slot );
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| 102 |
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| 103 | bool validate_program( program p );
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| 104 | private:
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| 105 | texture_slot m_active_slot;
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| 106 | texture m_bound_textures[ texture_slot::MAX_TEXTURES ];
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| 107 | vec4 m_clear_color;
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| 108 | float m_clear_depth;
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| 109 | int m_clear_stencil;
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| 110 | void* m_handle;
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| 111 |
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| 112 | handle_store< gl_vertex_array_info, vertex_array > m_vertex_arrays;
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| 113 | handle_store< gl_framebuffer_info, framebuffer > m_framebuffers;
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| 114 | };
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| 115 |
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| 116 |
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| 117 | } // namespace nv
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| 118 |
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| 119 | #endif // NV_CONTEXT_HH
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