cpp/openttd-patchpack/source Changeset - r24890:b3530a2e5759

Changeset - r24890:b3530a2e5759

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Michael Lutz - 3 years ago 2021-01-16 15:43:18
michi@icosahedron.de

Change: [Win32] Disable VSync for OpenGL by default.

2 files changed with 13 insertions and 0 deletions:

src/video/win32_v.cpp

src/video/win32_v.h

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src/video/win32_v.cpp

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@@ @@ -1328,6 +1328,7 @@ void VideoDriver_Win32GDI::PaintThread() @@
 #endif
 static PFNWGLCREATECONTEXTATTRIBSARBPROC _wglCreateContextAttribsARB = nullptr;
 static PFNWGLSWAPINTERVALEXTPROC _wglSwapIntervalEXT = nullptr;
 static bool _hasWGLARBCreateContextProfile = false; ///< Is WGL_ARB_create_context_profile supported?
 /** Platform-specific callback to get an OpenGL funtion pointer. */
@@ @@ -1398,6 +1399,9 @@ static void LoadWGLExtensions() @@
 					_wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
+				}
 				_hasWGLARBCreateContextProfile = FindStringInExtensionList(wgl_exts, "WGL_ARB_create_context_profile") != nullptr;
 				if (FindStringInExtensionList(wgl_exts, "WGL_EXT_swap_control") != nullptr) {
 					_wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
+				}
+			}
 			wglMakeCurrent(nullptr, nullptr);
@@ @@ -1416,6 +1420,7 @@ const char *VideoDriver_Win32OpenGL::Sta @@
 	if (BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 32) return "Only 32bpp blitters supported";
 	Dimension old_res = _cur_resolution; // Save current screen resolution in case of errors, as MakeWindow invalidates it.
 	this->vsync = GetDriverParamBool(param, "vsync");
 	LoadWGLExtensions();
@@ @@ -1487,6 +1492,13 @@ const char *VideoDriver_Win32OpenGL::All @@
+	}
 	if (!wglMakeCurrent(this->dc, rc)) return "Can't active GL context";
 	/* Enable/disable Vsync if supported. */
 	if (_wglSwapIntervalEXT != nullptr) {
 		_wglSwapIntervalEXT(this->vsync ? 1 : 0);
 	} else if (vsync) {
 		DEBUG(driver, 0, "OpenGL: Vsync requested, but not supported by driver");
+	}
 	this->gl_rc = rc;
 	return OpenGLBackend::Create(&GetOGLProcAddressCallback);
+}

src/video/win32_v.h

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@@ @@ -143,6 +143,7 @@ public: @@
 protected:
 	HDC   dc;          ///< Window device context.
 	HGLRC gl_rc;       ///< OpenGL context.
 	bool  vsync;       ///< Enable VSync?
 	uint8 GetFullscreenBpp() override { return 32; } // OpenGL is always 32 bpp.

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