| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_GL_GL_SURFACE_OSMESA_H_ |
| #define UI_GL_GL_SURFACE_OSMESA_H_ |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "ui/gfx/geometry/size.h" |
| #include "ui/gl/gl_export.h" |
| #include "ui/gl/gl_surface.h" |
| |
| namespace gl { |
| |
| // A surface that the Mesa software renderer draws to. This is actually just a |
| // buffer in system memory. GetHandle returns a pointer to the buffer. These |
| // surfaces can be resized and resizing preserves the contents. |
| class GL_EXPORT GLSurfaceOSMesa : public GLSurface { |
| public: |
| GLSurfaceOSMesa(GLSurfaceFormat format, const gfx::Size& size); |
| |
| // Implement GLSurface. |
| bool Initialize(GLSurfaceFormat format) override; |
| void Destroy() override; |
| bool Resize(const gfx::Size& new_size, |
| float scale_factor, |
| ColorSpace color_space, |
| bool has_alpha) override; |
| bool IsOffscreen() override; |
| gfx::SwapResult SwapBuffers(const PresentationCallback& callback) override; |
| gfx::Size GetSize() override; |
| void* GetHandle() override; |
| GLSurfaceFormat GetFormat() override; |
| |
| protected: |
| ~GLSurfaceOSMesa() override; |
| |
| private: |
| gfx::Size size_; |
| GLSurfaceFormat format_; |
| std::unique_ptr<int32_t[]> buffer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(GLSurfaceOSMesa); |
| }; |
| |
| // A thin subclass of |GLSurfaceOSMesa| that can be used in place |
| // of a native hardware-provided surface when a native surface |
| // provider is not available. |
| class GL_EXPORT GLSurfaceOSMesaHeadless : public GLSurfaceOSMesa { |
| public: |
| GLSurfaceOSMesaHeadless(); |
| |
| // GLSurfaceOSMesa overrides: |
| bool IsOffscreen() override; |
| gfx::SwapResult SwapBuffers(const PresentationCallback& callback) override; |
| bool SupportsPresentationCallback() override; |
| |
| protected: |
| ~GLSurfaceOSMesaHeadless() override; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(GLSurfaceOSMesaHeadless); |
| }; |
| |
| } // namespace gl |
| |
| #endif // UI_GL_GL_SURFACE_OSMESA_H_ |