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gl_draw: fix drawing of text outside of viewport

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Cyprinus Carpio 2024-07-12 11:09:09 +02:00 committed by ManoloFLTK
parent 6ed7b56c79
commit dac5f0ab39
1 changed files with 5 additions and 0 deletions
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5
src/gl_draw.cxx
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@ -510,6 +510,11 @@ void Fl_Gl_Window_Driver::draw_string_legacy(const char* str, int n)
/** draws a utf8 string using an OpenGL texture */
void Fl_Gl_Window_Driver::draw_string_with_texture(const char* str, int n)
{
// Check if the raster pos is valid.
// If it's not, then drawing it results in undefined behaviour (#1006, #1007).
GLint valid;
glGetIntegerv(GL_CURRENT_RASTER_POSITION_VALID, &valid);
if (!valid) return;
Fl_Gl_Window *gwin = Fl_Window::current()->as_gl_window();
gl_scale = (gwin ? gwin->pixels_per_unit() : 1);
if (!gl_fifo) gl_fifo = new gl_texture_fifo();