Merge pull request #2054 from jpark37/opengl-version

libobs-opengl: Require OpenGL 3.3 instead of 3.2

libobs-opengl/gl-shaderparser.c

@@ -692,7 +692,7 @@ static bool gl_shader_buildstring(struct gl_shader_parser *glsp)
 		return false;
 	}
 
-	dstr_copy(&glsp->gl_string, "#version 150\n\n");
+	dstr_copy(&glsp->gl_string, "#version 330\n\n");
 	dstr_cat(&glsp->gl_string, "const bool obs_glsl_compile = true;\n\n");
 	gl_write_params(glsp);
 	gl_write_inputs(glsp, main_func);

libobs-opengl/gl-subsystem.c

@@ -130,23 +130,15 @@ static void gl_enable_debug() {}
 
 static bool gl_init_extensions(struct gs_device *device)
 {
-	if (!GLAD_GL_VERSION_2_1) {
-		blog(LOG_ERROR, "obs-studio requires OpenGL version 2.1 or "
-				"higher.");
+	if (!GLAD_GL_VERSION_3_3) {
+		blog(LOG_ERROR,
+		     "obs-studio requires OpenGL version 3.3 or higher.");
 		return false;
 	}
 
 	gl_enable_debug();
 
-	if (!GLAD_GL_VERSION_3_0 && !GLAD_GL_ARB_framebuffer_object) {
-		blog(LOG_ERROR, "OpenGL extension ARB_framebuffer_object "
-				"is required.");
-		return false;
-	}
-
-	if (GLAD_GL_VERSION_3_2 || GLAD_GL_ARB_seamless_cube_map) {
-		gl_enable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
-	}
+	gl_enable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
 
 	if (GLAD_GL_VERSION_4_3 || GLAD_GL_ARB_copy_image)
 		device->copy_type = COPY_TYPE_ARB;
@@ -182,8 +174,11 @@ void convert_sampler_info(struct gs_sampler_state *sampler,
 	sampler->max_anisotropy = info->max_anisotropy;
 
 	max_anisotropy_max = 1;
-	glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &max_anisotropy_max);
-	gl_success("glGetIntegerv(GL_MAX_TEXTURE_ANISOTROPY_MAX)");
+	if (GLAD_GL_EXT_texture_filter_anisotropic) {
+		glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT,
+			      &max_anisotropy_max);
+		gl_success("glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT)");
+	}
 
 	if (1 <= sampler->max_anisotropy &&
 	    sampler->max_anisotropy <= max_anisotropy_max)
@@ -475,9 +470,12 @@ static bool load_texture_sampler(gs_texture_t *tex, gs_samplerstate_t *ss)
 		success = false;
 	if (!gl_tex_param_i(tex->gl_target, GL_TEXTURE_WRAP_R, ss->address_w))
 		success = false;
-	if (!gl_tex_param_i(tex->gl_target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
-			    ss->max_anisotropy))
-		success = false;
+	if (GLAD_GL_EXT_texture_filter_anisotropic) {
+		if (!gl_tex_param_i(tex->gl_target,
+				    GL_TEXTURE_MAX_ANISOTROPY_EXT,
+				    ss->max_anisotropy))
+			success = false;
+	}
 
 	apply_swizzle(tex);
 

libobs-opengl/gl-windows.c

@@ -154,35 +154,37 @@ static inline HGLRC gl_init_basic_context(HDC hdc)
 	return hglrc;
 }
 
-static const int attribs[] = {
-#ifdef _DEBUG
-	WGL_CONTEXT_FLAGS_ARB,        WGL_CONTEXT_DEBUG_BIT_ARB,
-#endif
-	WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, 0, 0};
-
 static inline HGLRC gl_init_context(HDC hdc)
 {
+	static const int attribs[] = {
 #ifdef _DEBUG
-	if (GLAD_WGL_ARB_create_context) {
-		HGLRC hglrc = wglCreateContextAttribsARB(hdc, 0, attribs);
-		if (!hglrc) {
-			blog(LOG_ERROR,
-			     "wglCreateContextAttribsARB failed, "
-			     "%lu",
-			     GetLastError());
-			return NULL;
-		}
-
-		if (!wgl_make_current(hdc, hglrc)) {
-			wglDeleteContext(hglrc);
-			return NULL;
-		}
+		WGL_CONTEXT_FLAGS_ARB,
+		WGL_CONTEXT_DEBUG_BIT_ARB,
+#endif
+		WGL_CONTEXT_PROFILE_MASK_ARB,
+		WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
+		WGL_CONTEXT_MAJOR_VERSION_ARB,
+		3,
+		WGL_CONTEXT_MINOR_VERSION_ARB,
+		3,
+		0,
+		0};
+
+	HGLRC hglrc = wglCreateContextAttribsARB(hdc, 0, attribs);
+	if (!hglrc) {
+		blog(LOG_ERROR,
+		     "wglCreateContextAttribsARB failed, "
+		     "%lu",
+		     GetLastError());
+		return NULL;
+	}
 
-		return hglrc;
+	if (!wgl_make_current(hdc, hglrc)) {
+		wglDeleteContext(hglrc);
+		return NULL;
 	}
-#endif
 
-	return gl_init_basic_context(hdc);
+	return hglrc;
 }
 
 static bool gl_dummy_context_init(struct dummy_context *dummy)

libobs-opengl/gl-x11.c

@@ -50,7 +50,7 @@ static const int ctx_attribs[] = {
 	GLX_CONTEXT_MAJOR_VERSION_ARB,
 	3,
 	GLX_CONTEXT_MINOR_VERSION_ARB,
-	2,
+	3,
 	None,
 };