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Create an OpenGL core profile context on Windows 

I didn't actually test this, but shamelessly stole the code from Isilkor's
opengl-3.2 branch.
objectmenu
Armin Burgmeier 2016-01-15 18:29:13 -08:00
parent e856720e21
commit ab6152e48c
1 changed files with 17 additions and 5 deletions
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22
src/graphics/C4DrawGLCtx.cpp
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@ -24,6 +24,9 @@
#ifndef USE_CONSOLE
static const int REQUESTED_GL_CTX_MAJOR = 3;
static const int REQUESTED_GL_CTX_MINOR = 2;
std::list<CStdGLCtx*> CStdGLCtx::contexts;
void CStdGLCtx::SelectCommon()
@ -232,6 +235,7 @@ bool CStdGLCtx::InitGlew(HINSTANCE hInst)
else
{
// init extensions
glewExperimental = GL_TRUE;
GLenum err = glewInit();
if(err != GLEW_OK)
{
@ -329,17 +333,23 @@ bool CStdGLCtx::Init(C4Window * pWindow, C4AbstractApp *pApp, HWND hWindow)
else
{
// create context
if (Config.Graphics.DebugOpenGL && wglCreateContextAttribsARB)
if (wglCreateContextAttribsARB)
{
const int attribs[] = {
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_DEBUG_BIT_ARB,
WGL_CONTEXT_FLAGS_ARB, Config.Graphics.DebugOpenGL ? WGL_CONTEXT_DEBUG_BIT_ARB : 0,
WGL_CONTEXT_MAJOR_VERSION_ARB, REQUESTED_GL_CTX_MAJOR,
WGL_CONTEXT_MINOR_VERSION_ARB, REQUESTED_GL_CTX_MINOR,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
DebugLog(" gl: Creating debug context.");
if (Config.Graphics.DebugOpenGL)
DebugLog(" gl: Creating debug context.");
hrc = wglCreateContextAttribsARB(hDC, 0, attribs);
}
else
{
DebugLog(" gl: wglCreateContextAttribsARB not available; creating default context.");
hrc = wglCreateContext(hDC);
}
@ -359,6 +369,7 @@ bool CStdGLCtx::Init(C4Window * pWindow, C4AbstractApp *pApp, HWND hWindow)
// After selecting the new context, we have to reinitialize GLEW to
// update its function pointers - the driver may elect to expose
// different extensions depending on the context attributes
glewExperimental = GL_TRUE;
GLenum err = glewInit();
if (err != GLEW_OK)
{
@ -489,8 +500,8 @@ bool CStdGLCtx::Init(C4Window * pWindow, C4AbstractApp *)
// Create Context with sharing (if this is the main context, our ctx will be 0, so no sharing)
const int attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 1,
GLX_CONTEXT_MAJOR_VERSION_ARB, REQUESTED_GL_CTX_MAJOR,
GLX_CONTEXT_MINOR_VERSION_ARB, REQUESTED_GL_CTX_MINOR,
GLX_CONTEXT_FLAGS_ARB, (Config.Graphics.DebugOpenGL ? GLX_CONTEXT_DEBUG_BIT_ARB : 0),
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
None
@ -599,6 +610,7 @@ bool CStdGLCtx::Init(C4Window * pWindow, C4AbstractApp *)
// No luck at all?
if (!Select(true)) return pGL->Error(" gl: Unable to select context");
// init extensions
glewExperimental = GL_TRUE;
GLenum err = glewInit();
if (GLEW_OK != err)
{