static int
GL_UpdateViewport(SDL_Renderer * renderer)
{
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
if (SDL_CurrentContext != data->context) {
/* We'll update the viewport after we rebind the context */
return 0;
}
data->glViewport(renderer->viewport.x, renderer->viewport.y,
renderer->viewport.w, renderer->viewport.h);
data->glMatrixMode(GL_PROJECTION);
data->glLoadIdentity();
data->glOrtho((GLdouble) 0,
(GLdouble) renderer->viewport.w,
(GLdouble) renderer->viewport.h,
(GLdouble) 0, 0.0, 1.0);
return 0;
}
/* This is called if we need to invalidate all of the SDL OpenGL state */
static void
GL_ResetState(SDL_Renderer *renderer)
{
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
if (SDL_CurrentContext == data->context) {
GL_UpdateViewport(renderer);
} else {
GL_ActivateRenderer(renderer);
}
data->current.shader = SHADER_NONE;
data->current.color = 0;
data->current.blendMode = -1;
data->glDisable(GL_DEPTH_TEST);
data->glDisable(GL_CULL_FACE);
/* This ended up causing video discrepancies between OpenGL and Direct3D */
/*data->glEnable(GL_LINE_SMOOTH);*/
data->glMatrixMode(GL_MODELVIEW);
data->glLoadIdentity();
}