From 9fd0d6191c3adf1398b819933c36b40d8bc1898b Mon Sep 17 00:00:00 2001 From: Sam Lantinga Date: Wed, 18 Oct 2017 08:52:04 -0700 Subject: [PATCH] Fixed bug 3821 - Allow SDL_CreateWindow and SDL_CreateRenderer with OpenGL ES 3.0 (GLES3) for Angle (Windows) Carlos Angle supports GLES3 but when using these functions (SDL_CreateWindow and SDL_CreateRenderer), defaults again to GLES2.0. A current workaround (hack) to retrieve a GLES3.0 context with Angle is: 1) set SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0); after InitSDL AND after calling SDL_CreateWindow (before SDL_CreateRenderer) 2) Comment lines 2032-2044 in SDL_render_gles2.c, funtion GLES2_CreateRenderer window_flags = SDL_GetWindowFlags(window); if (!(window_flags & SDL_WINDOW_OPENGL) || profile_mask != SDL_GL_CONTEXT_PROFILE_ES || major != RENDERER_CONTEXT_MAJOR || minor != RENDERER_CONTEXT_MINOR) { changed_window = SDL_TRUE; SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, RENDERER_CONTEXT_MAJOR); SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, RENDERER_CONTEXT_MINOR); if (SDL_RecreateWindow(window, window_flags | SDL_WINDOW_OPENGL) < 0) { goto error; } } This retrives a GLES3 context as confirmed using glGetString(GL_VERSION). This should be fixed by modifying a few if's. --- src/render/opengles2/SDL_render_gles2.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/render/opengles2/SDL_render_gles2.c b/src/render/opengles2/SDL_render_gles2.c index d5d42c343..bd343cf4f 100644 --- a/src/render/opengles2/SDL_render_gles2.c +++ b/src/render/opengles2/SDL_render_gles2.c @@ -2031,8 +2031,9 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags) } window_flags = SDL_GetWindowFlags(window); + /* OpenGL ES 3.0 is a superset of OpenGL ES 2.0 */ if (!(window_flags & SDL_WINDOW_OPENGL) || - profile_mask != SDL_GL_CONTEXT_PROFILE_ES || major != RENDERER_CONTEXT_MAJOR || minor != RENDERER_CONTEXT_MINOR) { + profile_mask != SDL_GL_CONTEXT_PROFILE_ES || major < RENDERER_CONTEXT_MAJOR) { changed_window = SDL_TRUE; SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);