c381fdb85c
Copy and adapt OpenGL GAL to WebGL: - Copy all OpenGL GAL source files to tests/gal-regression/wasm/webgl/ - Rename classes from OPENGL_* to WEBGL_* - Add kiglew.h with WebGL2/GLES3 headers and GLEW stubs - Add webgl_antialiasing.h/cpp adapted for WEBGL_COMPOSITOR - Add shader generator (generate_shaders.py) for WASM build - Update Makefile with all KiCad dependencies (C++20, GLM, clipper2, etc.) Build produces 544KB JS + 4.9MB WASM. Tests run but render blank (expected - GL context initialization needs WebGL adaptation). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
143 lines
3.4 KiB
C++
143 lines
3.4 KiB
C++
/*
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* This program source code file is part of KICAD, a free EDA CAD application.
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*
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* Copyright The KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef OPENGL_ANTIALIASING_H__
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#define OPENGL_ANTIALIASING_H__
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#include <memory>
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#include "shader.h"
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#include <math/vector2d.h>
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namespace KIGFX {
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class WEBGL_COMPOSITOR;
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class OPENGL_PRESENTOR
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{
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public:
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virtual ~OPENGL_PRESENTOR()
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{
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}
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virtual bool Init() = 0;
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virtual unsigned int CreateBuffer() = 0;
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virtual VECTOR2I GetInternalBufferSize() = 0;
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virtual void OnLostBuffers() = 0;
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virtual void Begin() = 0;
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virtual void DrawBuffer( GLuint aBuffer ) = 0;
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virtual void Present() = 0;
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};
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class ANTIALIASING_NONE : public OPENGL_PRESENTOR
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{
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public:
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ANTIALIASING_NONE( WEBGL_COMPOSITOR* aCompositor );
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bool Init() override;
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unsigned int CreateBuffer() override;
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VECTOR2I GetInternalBufferSize() override;
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void OnLostBuffers() override;
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void Begin() override;
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void DrawBuffer( GLuint aBuffer ) override;
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void Present() override;
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private:
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WEBGL_COMPOSITOR* compositor;
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};
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class ANTIALIASING_SUPERSAMPLING : public OPENGL_PRESENTOR
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{
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public:
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ANTIALIASING_SUPERSAMPLING( WEBGL_COMPOSITOR* aCompositor );
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bool Init() override;
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unsigned int CreateBuffer() override;
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VECTOR2I GetInternalBufferSize() override;
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void OnLostBuffers() override;
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void Begin() override;
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void DrawBuffer( GLuint ) override;
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void Present() override;
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private:
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WEBGL_COMPOSITOR* compositor;
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unsigned int ssaaMainBuffer;
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bool areBuffersCreated;
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bool areShadersCreated;
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};
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class ANTIALIASING_SMAA : public OPENGL_PRESENTOR
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{
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public:
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ANTIALIASING_SMAA( WEBGL_COMPOSITOR* aCompositor );
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bool Init() override;
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unsigned int CreateBuffer () override;
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VECTOR2I GetInternalBufferSize() override;
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void OnLostBuffers() override;
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void Begin() override;
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void DrawBuffer( GLuint buffer ) override;
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void Present() override;
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private:
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void loadShaders();
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void updateUniforms();
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bool areBuffersInitialized;
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unsigned int smaaBaseBuffer; // base + overlay temporary
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unsigned int smaaEdgesBuffer;
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unsigned int smaaBlendBuffer;
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// smaa shader lookup textures
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unsigned int smaaAreaTex;
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unsigned int smaaSearchTex;
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bool shadersLoaded;
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std::unique_ptr<SHADER> pass_1_shader;
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GLint pass_1_metrics;
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std::unique_ptr<SHADER> pass_2_shader;
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GLint pass_2_metrics;
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std::unique_ptr<SHADER> pass_3_shader;
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GLint pass_3_metrics;
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WEBGL_COMPOSITOR* compositor;
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};
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}
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#endif
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