shithub: cstory

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Explicitly disable vsync in OpenGL

It seems to be enabled by default (it was on my Raspberry Pi, anyway)

--- a/src/Backends/Rendering/Window/OpenGL3/GLFW3.cpp

+++ b/src/Backends/Rendering/Window/OpenGL3/GLFW3.cpp

@@ -59,6 +59,8 @@

 			if (GLAD_GL_VERSION_3_2)

 			{

 	#endif

+				glfwSwapInterval(0);	// Disable vsync

+

 				Backend_PostWindowCreation();

 				return true;

--- a/src/Backends/Rendering/Window/OpenGL3/SDL1.cpp

+++ b/src/Backends/Rendering/Window/OpenGL3/SDL1.cpp

@@ -13,6 +13,11 @@

 bool WindowBackend_OpenGL_CreateWindow(const char *window_title, size_t *screen_width, size_t *screen_height, bool fullscreen)

 {

+#ifdef SDL_GL_SWAP_CONTROL

+	if (SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 0) < 0)	// Disable vsync

+		Backend_PrintError("Couldn't set OpenGL swap interval: %s", SDL_GetError());

+#endif

+

 	if (SDL_SetVideoMode(*screen_width, *screen_height, 0, SDL_RESIZABLE | SDL_OPENGL | (fullscreen ? SDL_FULLSCREEN : 0)) != NULL)

 	{

 		SDL_WM_SetCaption(window_title, NULL);

--- a/src/Backends/Rendering/Window/OpenGL3/SDL2.cpp

+++ b/src/Backends/Rendering/Window/OpenGL3/SDL2.cpp

@@ -63,6 +63,8 @@

 					if (GLAD_GL_VERSION_3_2)

 					{

 			#endif

+						SDL_GL_SetSwapInterval(0);	// Disable vsync

+

 						Backend_PostWindowCreation();

 						return true;

--- a/src/Backends/Rendering/Window/Software/GLFW3.cpp

+++ b/src/Backends/Rendering/Window/Software/GLFW3.cpp

@@ -52,6 +52,8 @@

 	{

 		glfwMakeContextCurrent(window);

+		glfwSwapInterval(0);	// Disable vsync

+

 		glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

 		glEnable(GL_TEXTURE_2D);