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@ -3,7 +3,7 @@ |
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* |
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* Copyright (C) 2012 Torsten Hueter, torstenhtr <at> gmx.de |
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* Copyright (C) 2012 Kicad Developers, see change_log.txt for contributors. |
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* Copyright (C) 2013 CERN |
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* Copyright (C) 2013-2015 CERN |
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* @author Maciej Suminski <maciej.suminski@cern.ch> |
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* |
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* Graphics Abstraction Layer (GAL) for OpenGL |
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@ -31,7 +31,6 @@ |
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#include <wx/log.h>
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#include <macros.h>
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#include <confirm.h>
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#ifdef __WXDEBUG__
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#include <profile.h>
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#endif /* __WXDEBUG__ */
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@ -51,6 +50,9 @@ OPENGL_GAL::OPENGL_GAL( wxWindow* aParent, wxEvtHandler* aMouseListener, |
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wxEvtHandler* aPaintListener, const wxString& aName ) : |
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wxGLCanvas( aParent, wxID_ANY, (int*) glAttributes, wxDefaultPosition, wxDefaultSize, |
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wxEXPAND, aName ), |
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parentWindow( aParent ), |
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mouseListener( aMouseListener ), |
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paintListener( aPaintListener ), |
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cachedManager( true ), |
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nonCachedManager( false ), |
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overlayManager( false ) |
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@ -59,14 +61,29 @@ OPENGL_GAL::OPENGL_GAL( wxWindow* aParent, wxEvtHandler* aMouseListener, |
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if( glContext == NULL ) |
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glContext = new wxGLContext( this ); |
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parentWindow = aParent; |
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mouseListener = aMouseListener; |
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paintListener = aPaintListener; |
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aParent->Show(); // wxWidgets require the window to be visible to set its GL context
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// Initialize GLEW, FBOs & VBOs
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SetCurrent( *glContext ); |
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initGlew(); |
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// Prepare shaders
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if( !shader.LoadBuiltinShader( 0, SHADER_TYPE_VERTEX ) ) |
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throw std::runtime_error( "Cannot compile vertex shader!" ); |
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if( !shader.LoadBuiltinShader( 1, SHADER_TYPE_FRAGMENT ) ) |
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throw std::runtime_error( "Cannot compile fragment shader!" ); |
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if( !shader.Link() ) |
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throw std::runtime_error( "Cannot link the shaders!" ); |
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// Make VBOs use shaders
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cachedManager.SetShader( shader ); |
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nonCachedManager.SetShader( shader ); |
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overlayManager.SetShader( shader ); |
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// Initialize the flags
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isGlewInitialized = false; |
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isFramebufferInitialized = false; |
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isShaderInitialized = false; |
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isGrouping = false; |
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groupCounter = 0; |
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@ -100,10 +117,7 @@ OPENGL_GAL::OPENGL_GAL( wxWindow* aParent, wxEvtHandler* aMouseListener, |
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InitTesselatorCallbacks( tesselator ); |
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if( tesselator == NULL ) |
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{ |
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DisplayError( parentWindow, wxT( "Could not create the tesselator" ) ); |
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exit( 1 ); |
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} |
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throw std::runtime_error( "Could not create the tesselator" ); |
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gluTessProperty( tesselator, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_POSITIVE ); |
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@ -123,13 +137,8 @@ OPENGL_GAL::~OPENGL_GAL() |
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void OPENGL_GAL::BeginDrawing() |
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{ |
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SetCurrent( *glContext ); |
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clientDC = new wxClientDC( this ); |
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// Initialize GLEW, FBOs & VBOs
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if( !isGlewInitialized ) |
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initGlew(); |
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// Set up the view port
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glMatrixMode( GL_PROJECTION ); |
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glLoadIdentity(); |
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@ -148,35 +157,6 @@ void OPENGL_GAL::BeginDrawing() |
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isFramebufferInitialized = true; |
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} |
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// Compile the shaders
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if( !isShaderInitialized ) |
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{ |
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if( !shader.LoadBuiltinShader( 0, SHADER_TYPE_VERTEX ) ) |
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{ |
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DisplayError( parentWindow, wxT( "Cannot compile vertex shader!" ) ); |
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exit( 1 ); |
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} |
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if( !shader.LoadBuiltinShader( 1, SHADER_TYPE_FRAGMENT ) ) |
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{ |
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DisplayError( parentWindow, wxT( "Cannot compile fragment shader!" ) ); |
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exit( 1 ); |
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} |
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if( !shader.Link() ) |
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{ |
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DisplayError( parentWindow, wxT( "Cannot link the shaders!" ) ); |
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exit( 1 ); |
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} |
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// Make VBOs use shaders
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cachedManager.SetShader( shader ); |
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nonCachedManager.SetShader( shader ); |
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overlayManager.SetShader( shader ); |
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isShaderInitialized = true; |
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} |
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// Disable 2D Textures
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glDisable( GL_TEXTURE_2D ); |
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@ -815,7 +795,7 @@ void OPENGL_GAL::drawLineQuad( const VECTOR2D& aStartPoint, const VECTOR2D& aEnd |
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if( lineLength <= 0.0 ) |
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return; |
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double scale = 0.5 * lineWidth / lineLength; |
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// The perpendicular vector also needs transformations
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@ -941,8 +921,7 @@ void OPENGL_GAL::initGlew() |
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if( GLEW_OK != err ) |
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{ |
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DisplayError( parentWindow, wxString::FromUTF8( (char*) glewGetErrorString( err ) ) ); |
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exit( 1 ); |
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throw std::runtime_error( (const char*) glewGetErrorString( err ) ); |
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} |
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else |
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{ |
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@ -952,30 +931,17 @@ void OPENGL_GAL::initGlew() |
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// Check the OpenGL version (minimum 2.1 is required)
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if( GLEW_VERSION_2_1 ) |
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{ |
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wxLogInfo( wxT( "OpenGL 2.1 supported." ) ); |
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} |
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else |
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{ |
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DisplayError( parentWindow, wxT( "OpenGL 2.1 or higher is required!" ) ); |
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exit( 1 ); |
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} |
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throw std::runtime_error( "OpenGL 2.1 or higher is required!" ); |
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// Framebuffers have to be supported
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if( !GLEW_EXT_framebuffer_object ) |
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{ |
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DisplayError( parentWindow, wxT( "Framebuffer objects are not supported!" ) ); |
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exit( 1 ); |
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} |
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throw std::runtime_error( "Framebuffer objects are not supported!" ); |
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// Vertex buffer has to be supported
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if( !GLEW_ARB_vertex_buffer_object ) |
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{ |
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DisplayError( parentWindow, wxT( "Vertex buffer objects are not supported!" ) ); |
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exit( 1 ); |
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} |
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isGlewInitialized = true; |
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throw std::runtime_error( "Vertex buffer objects are not supported!" ); |
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} |
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@ -1058,12 +1024,8 @@ void CALLBACK EdgeCallback( GLboolean aEdgeFlag ) |
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void CALLBACK ErrorCallback( GLenum aErrorCode ) |
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{ |
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const GLubyte* eString = gluErrorString( aErrorCode ); |
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DisplayError( NULL, wxT( "Tessellation error: " ) + |
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wxString( (const char*)( eString ), wxConvUTF8 ) ); |
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exit( 1 ); |
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//throw std::runtime_error( std::string( "Tessellation error: " ) +
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//std::string( (const char*) gluErrorString( aErrorCode ) );
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} |
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Maciej Suminski
11 years ago