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Fix crash when GL_LoadFunctions()/GLES2_LoadFunctions() fails

Browse Source 
https://bugzilla.libsdl.org/show_bug.cgi?id=4350

We can't safely call GL_DestroyRenderer() until GL_LoadFunctions()
succeeds because we will be missing functions that we try to use
when activating the renderer for destruction if we have an GL context.
This commit is contained in:
Cameron Gutman 2018-10-31 20:17:53 -07:00
parent aeee424f65
commit 329f2eb99e
2 changed files with 18 additions and 8 deletions
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13
src/render/opengl/SDL_render_gl.c
View File

@ -420,7 +420,7 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
data = (GL_RenderData *) SDL_calloc(1, sizeof(*data));
if (!data) {
GL_DestroyRenderer(renderer);
SDL_free(renderer);
SDL_OutOfMemory();
goto error;
}
@ -455,16 +455,21 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
data->context = SDL_GL_CreateContext(window);
if (!data->context) {
GL_DestroyRenderer(renderer);
SDL_free(renderer);
SDL_free(data);
goto error;
}
if (SDL_GL_MakeCurrent(window, data->context) < 0) {
GL_DestroyRenderer(renderer);
SDL_GL_DeleteContext(data->context);
SDL_free(renderer);
SDL_free(data);
goto error;
}
if (GL_LoadFunctions(data) < 0) {
GL_DestroyRenderer(renderer);
SDL_GL_DeleteContext(data->context);
SDL_free(renderer);
SDL_free(data);
goto error;
}

13
src/render/opengles2/SDL_render_gles2.c
View File

@ -2122,7 +2122,7 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
data = (GLES2_DriverContext *)SDL_calloc(1, sizeof(GLES2_DriverContext));
if (!data) {
GLES2_DestroyRenderer(renderer);
SDL_free(renderer);
SDL_OutOfMemory();
goto error;
}
@ -2134,16 +2134,21 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
/* Create an OpenGL ES 2.0 context */
data->context = SDL_GL_CreateContext(window);
if (!data->context) {
GLES2_DestroyRenderer(renderer);
SDL_free(renderer);
SDL_free(data);
goto error;
}
if (SDL_GL_MakeCurrent(window, data->context) < 0) {
GLES2_DestroyRenderer(renderer);
SDL_GL_DeleteContext(data->context);
SDL_free(renderer);
SDL_free(data);
goto error;
}
if (GLES2_LoadFunctions(data) < 0) {
GLES2_DestroyRenderer(renderer);
SDL_GL_DeleteContext(data->context);
SDL_free(renderer);
SDL_free(data);
goto error;
}