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@@ -11,12 +11,13 @@
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#ifndef VIDEO_OPENGL_H
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#define VIDEO_OPENGL_H
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#include "../core/alloc_type.hpp"
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#include "../core/geometry_type.hpp"
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#include "../gfx_type.h"
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typedef void (*OGLProc)();
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typedef OGLProc (*GetOGLProcAddressProc)(const char *proc);
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bool IsOpenGLVersionAtLeast(byte major, byte minor);
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const char *FindStringInExtensionList(const char *string, const char *substring);
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@@ -25,15 +26,17 @@ const char *FindStringInExtensionList(co
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class OpenGLBackend : public ZeroedMemoryAllocator {
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private:
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static OpenGLBackend *instance; ///< Singleton instance pointer.
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GLuint vid_pbo; ///< Pixel buffer object storing the memory used for the video driver to draw to.
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GLuint vid_texture; ///< Texture handle for the video buffer texture.
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GLuint vid_program; ///< Shader program for rendering the video buffer.
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GLuint vid_program; ///< Shader program for rendering a RGBA video buffer.
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GLuint pal_program; ///< Shader program for rendering a paletted video buffer.
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GLuint vao_quad; ///< Vertex array object storing the rendering state for the fullscreen quad.
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GLuint vbo_quad; ///< Vertex buffer with a fullscreen quad.
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GLuint pal_texture; ///< Palette lookup texture.
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OpenGLBackend();
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~OpenGLBackend();
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const char *Init();
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bool InitShaders();
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@@ -44,12 +47,13 @@ public:
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{
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return OpenGLBackend::instance;
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}
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static const char *Create(GetOGLProcAddressProc get_proc);
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static void Destroy();
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void UpdatePalette(const Colour *pal, uint first, uint length);
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bool Resize(int w, int h, bool force = false);
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void Paint();
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void *GetVideoBuffer();
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void ReleaseVideoBuffer(const Rect &update_rect);
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};
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