[image_producer] refuse too large images nicely instead of letting OpenGL tell us...

[casparcg] / accelerator / ogl / image / image_mixer.cpp

diff --git a/accelerator/ogl/image/image_mixer.cpp b/accelerator/ogl/image/image_mixer.cpp
index 1c983cee20e4f8db8e5a0d7904fabc57c5bc387f..19d0191e5fef9a23f5a70e542d24a02806f2d776 100644 (file)
--- a/accelerator/ogl/image/image_mixer.cpp
+++ b/accelerator/ogl/image/image_mixer.cpp
@@ -369,6 +369,16 @@ public:
 
                return core::mutable_frame(std::move(buffers), core::mutable_audio_buffer(), tag, desc, channel_layout);
        }
+
+       int get_max_frame_size() override
+       {
+               return ogl_->invoke([]
+               {
+                       GLint64 params[1];
+                       glGetInteger64v(GL_MAX_TEXTURE_SIZE, params);
+                       return static_cast<int>(params[0]);
+               });
+       }
 };
 
 image_mixer::image_mixer(const spl::shared_ptr<device>& ogl, bool blend_modes_wanted, bool straight_alpha_wanted, int channel_id) : impl_(new impl(ogl, blend_modes_wanted, straight_alpha_wanted, channel_id)){}
@@ -376,6 +386,7 @@ image_mixer::~image_mixer(){}
 void image_mixer::push(const core::frame_transform& transform){impl_->push(transform);}
 void image_mixer::visit(const core::const_frame& frame){impl_->visit(frame);}
 void image_mixer::pop(){impl_->pop();}
+int image_mixer::get_max_frame_size() { return impl_->get_max_frame_size(); }
 std::future<array<const std::uint8_t>> image_mixer::operator()(const core::video_format_desc& format_desc, bool straighten_alpha){return impl_->render(format_desc, straighten_alpha);}
 core::mutable_frame image_mixer::create_frame(const void* tag, const core::pixel_format_desc& desc, const core::audio_channel_layout& channel_layout) {return impl_->create_frame(tag, desc, channel_layout);}