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dynamically switch between OpenGL 2 and OpenGL 3 (test gwen)

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This commit is contained in:
Erwin Coumans
2014-06-30 14:42:11 -07:00
parent 473c2d43bf
commit 8e2a4f8171
2 changed files with 54 additions and 65 deletions
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98
btgui/GwenOpenGLTest/OpenGLSample.cpp
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@@ -305,68 +305,60 @@ extern int avoidUpdate;
int main()
{
//#define TEST_OPENGL2_GWEN
#ifdef TEST_OPENGL2_GWEN
b3gDefaultOpenGLWindow* window = new b3gDefaultOpenGLWindow();
window->setKeyboardCallback(keyCallback);
b3gWindowConstructionInfo wci;
wci.m_openglVersion = 2;
wci.m_width = sWidth;
wci.m_height = sHeight;
// wci.m_resizeCallback = MyResizeCallback;
window->createWindow(wci);
window->setResizeCallback(MyResizeCallback);
window->setWindowTitle("render test");
// Gwen::Renderer::OpenGL_DebugFont* pRenderer = new Gwen::Renderer::OpenGL_DebugFont();
gwenRenderer = new Gwen::Renderer::OpenGL_DebugFont();
skin.SetRender( gwenRenderer );
pCanvas = new Gwen::Controls::Canvas( &skin );
pCanvas->SetSize( sWidth, sHeight);
pCanvas->SetDrawBackground( true );
pCanvas->SetBackgroundColor( Gwen::Color( 150, 170, 170, 255 ) );
glClearColor(1,0,0,1);
/* while( !window->requestedExit() )
{
window->startRendering();
// Main OpenGL Render Loop
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
window->endRendering();
}
*/
//exit(0);
#else
float retinaScale = 1.f;
b3gDefaultOpenGLWindow* window = new b3gDefaultOpenGLWindow();
window->setKeyboardCallback(keyCallback);
b3gWindowConstructionInfo wci;
wci.m_width = sWidth;
wci.m_height = sHeight;
// wci.m_resizeCallback = MyResizeCallback;
window->createWindow(wci);
int majorGlVersion, minorGlVersion;
window->setResizeCallback(MyResizeCallback);
window->setWindowTitle("render test");
if (!sscanf((const char*)glGetString(GL_VERSION), "%d.%d", &majorGlVersion, &minorGlVersion)==2)
{
printf("Exit: Error cannot extract OpenGL version from GL_VERSION string\n");
exit(0);
}
if (majorGlVersion>=3)
{
float retinaScale = 1.f;
#ifndef __APPLE__
glewInit();
glewInit();
#endif
retinaScale = window->getRetinaScale();
primRenderer = new GLPrimitiveRenderer(sWidth,sHeight);
sth_stash* font = initFont(primRenderer );
gwenRenderer = new GwenOpenGL3CoreRenderer(primRenderer,font,sWidth,sHeight,retinaScale);
retinaScale = window->getRetinaScale();
primRenderer = new GLPrimitiveRenderer(sWidth,sHeight);
sth_stash* font = initFont(primRenderer );
gwenRenderer = new GwenOpenGL3CoreRenderer(primRenderer,font,sWidth,sHeight,retinaScale);
#endif
} else
{
//OpenGL 2.x
gwenRenderer = new Gwen::Renderer::OpenGL_DebugFont();
skin.SetRender( gwenRenderer );
pCanvas = new Gwen::Controls::Canvas( &skin );
pCanvas->SetSize( sWidth, sHeight);
pCanvas->SetDrawBackground( true );
pCanvas->SetBackgroundColor( Gwen::Color( 150, 170, 170, 255 ) );
glClearColor(1,0,0,1);
}
//
// Create a GWEN OpenGL Renderer
@@ -418,8 +410,10 @@ glClearColor(1,0,0,1);
// MSG msg;
while( !window->requestedExit() )
{
saveOpenGLState(sWidth,sHeight);
if (majorGlVersion<3)
{
saveOpenGLState(sWidth,sHeight);
}
// Skip out if the window is closed
//if ( !IsWindowVisible( g_pHWND ) )
@@ -508,7 +502,11 @@ glClearColor(1,0,0,1);
// SwapBuffers( GetDC( g_pHWND ) );
}
window->endRendering();
restoreOpenGLState();
if (majorGlVersion<3)
{
restoreOpenGLState();
}
}
window->closeWindow();