X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgraphics%2Fwgl%2Fglcontext.cpp;h=35ec8e9b1983471f5dd12e476f4a662d2deaa7c4;hb=c703f5b01bf5d7eeb13091e64109b58f5d12f53c;hp=844f7a712c990a1442a7f442c4d50e5034e5b602;hpb=171f2b47008522ad7e950dc67447a08406f4888d;p=libs%2Fgui.git

diff --git a/source/graphics/wgl/glcontext.cpp b/source/graphics/wgl/glcontext.cpp
index 844f7a7..35ec8e9 100644
--- a/source/graphics/wgl/glcontext.cpp
+++ b/source/graphics/wgl/glcontext.cpp
@@ -1,8 +1,12 @@
+#include <vector>
 #include <windows.h>
 #include <GL/gl.h>
+#include <GL/wglext.h>
 #include "glcontext.h"
 #include "window_private.h"
 
+using namespace std;
+
 namespace Msp {
 namespace Graphics {
 
@@ -39,7 +43,42 @@ void GLContext::platform_init(const GLOptions &opts)
 	SetPixelFormat(dc, pf_index, &pfd);
 
 	priv = new Private;
-	priv->context = wglCreateContext(dc);
+	if(opts.forward_compatible || opts.gl_version_major)
+	{
+		ContextHandle fake_context = wglCreateContext(dc);
+		wglMakeCurrent(dc, fake_context);
+
+		PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribs = reinterpret_cast<PFNWGLCREATECONTEXTATTRIBSARBPROC>(wglGetProcAddress("wglCreateContextAttribsARB"));
+		if(!wglCreateContextAttribs)
+			throw unsupported_gl_mode(opts);
+
+		vector<int> ctx_attribs;
+
+		if(opts.forward_compatible)
+		{
+			ctx_attribs.push_back(WGL_CONTEXT_FLAGS_ARB);
+			ctx_attribs.push_back(WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB);
+		}
+
+		if(opts.gl_version_major)
+		{
+			ctx_attribs.push_back(WGL_CONTEXT_MAJOR_VERSION_ARB);
+			ctx_attribs.push_back(opts.gl_version_major);
+			ctx_attribs.push_back(WGL_CONTEXT_MINOR_VERSION_ARB);
+			ctx_attribs.push_back(opts.gl_version_minor);
+		}
+
+		ctx_attribs.push_back(0);
+
+		priv->context = wglCreateContextAttribs(dc, 0, &ctx_attribs[0]);
+		if(!priv->context)
+			throw unsupported_gl_mode(opts);
+
+		wglMakeCurrent(0, 0);
+		wglDeleteContext(fake_context);
+	}
+	else
+		priv->context = wglCreateContext(dc);
 	wglMakeCurrent(dc, priv->context);
 
 	ReleaseDC(window.get_private().window, dc);
@@ -53,6 +92,14 @@ GLContext::~GLContext()
 	delete priv;
 }
 
+void GLContext::set_swap_interval(unsigned i)
+{
+	PFNWGLSWAPINTERVALEXTPROC wglSwapInterval = reinterpret_cast<PFNWGLSWAPINTERVALEXTPROC>(wglGetProcAddress("wglSwapIntervalEXT"));
+	if(!wglSwapInterval)
+		throw runtime_error("wglSwapIntervalEXT not found");
+	wglSwapInterval(i);
+}
+
 void GLContext::swap_buffers()
 {
 	HDC dc = GetDC(window.get_private().window);