49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
#pragma once
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#include <mbgl/gfx/headless_backend.hpp>
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#include <mbgl/gl/renderer_backend.hpp>
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#include <memory>
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#include <functional>
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namespace mbgl {
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namespace gl {
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class HeadlessBackend final : public gl::RendererBackend, public gfx::HeadlessBackend {
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public:
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HeadlessBackend(Size = {256, 256},
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SwapBehaviour = SwapBehaviour::NoFlush,
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gfx::ContextMode = gfx::ContextMode::Unique);
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~HeadlessBackend() override;
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void updateAssumedState() override;
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gfx::Renderable& getDefaultRenderable() override;
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PremultipliedImage readStillImage() override;
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RendererBackend* getRendererBackend() override;
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void swap();
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class Impl {
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public:
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virtual ~Impl() = default;
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virtual gl::ProcAddress getExtensionFunctionPointer(const char*) = 0;
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virtual void activateContext() = 0;
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virtual void deactivateContext() {}
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};
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private:
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// Implementation specific functions
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gl::ProcAddress getExtensionFunctionPointer(const char*) override;
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void activate() override;
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void deactivate() override;
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void createImpl();
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private:
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std::unique_ptr<Impl> impl;
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bool active = false;
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SwapBehaviour swapBehaviour = SwapBehaviour::NoFlush;
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};
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} // namespace gl
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} // namespace mbgl
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