142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file wglGraphicsStateGuardian.h
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* @author drose
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* @date 2003-01-27
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*/
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#ifndef WGLGRAPHICSSTATEGUARDIAN_H
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#define WGLGRAPHICSSTATEGUARDIAN_H
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#include "pandabase.h"
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#include "glgsg.h"
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// This must be included after we have included glgsg.h (which includes gl.h).
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#include "wglext.h"
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/**
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* A tiny specialization on GLGraphicsStateGuardian to add some wgl-specific
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* information.
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*/
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class wglGraphicsStateGuardian : public GLGraphicsStateGuardian {
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public:
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wglGraphicsStateGuardian(GraphicsEngine *engine, GraphicsPipe *pipe,
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wglGraphicsStateGuardian *share_with);
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virtual ~wglGraphicsStateGuardian();
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INLINE int get_pfnum() const;
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INLINE bool pfnum_supports_pbuffer() const;
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INLINE const FrameBufferProperties &get_fb_properties() const;
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bool fail_pfnum();
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INLINE bool made_context() const;
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INLINE HGLRC get_context(HDC hdc);
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void get_properties(FrameBufferProperties &properties, HDC hdc, int pfnum);
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bool get_properties_advanced(FrameBufferProperties &properties, HDC hdc, int pfnum);
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void choose_pixel_format(const FrameBufferProperties &properties, bool need_pbuffer);
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virtual void reset();
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INLINE HDC get_twindow_dc();
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INLINE bool get_supports_wgl_render_texture() const;
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static bool get_gamma_table(void);
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static bool static_set_gamma(bool restore, PN_stdfloat gamma);
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bool set_gamma(PN_stdfloat gamma);
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void restore_gamma();
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static void atexit_function(void);
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protected:
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virtual void get_extra_extensions();
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virtual void *do_get_extension_func(const char *name);
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private:
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void make_context(HDC hdc);
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HGLRC get_share_context() const;
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void redirect_share_pool(wglGraphicsStateGuardian *share_with);
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bool make_twindow();
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void release_twindow();
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static void register_twindow_class();
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// We have to save a pointer to the GSG we intend to share texture context
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// with, since we don't create our own context in the constructor.
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PT(wglGraphicsStateGuardian) _share_with;
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// These properties are for all wglGraphicsWindow that use this gsg.
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FrameBufferProperties _pfnum_properties;
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bool _pfnum_supports_pbuffer;
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int _pfnum;
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// This pfnum is the pfnum chosen via DescribePixelFormat. It is used in
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// case the one returned by wglChoosePixelFormatARB() fails.
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FrameBufferProperties _pre_pfnum_properties;
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int _pre_pfnum;
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bool _made_context;
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HGLRC _context;
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HWND _twindow;
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HDC _twindow_dc;
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static const char * const _twindow_class_name;
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static bool _twindow_class_registered;
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public:
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bool _supports_swap_control;
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PFNWGLSWAPINTERVALEXTPROC _wglSwapIntervalEXT;
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bool _supports_pbuffer;
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PFNWGLCREATEPBUFFERARBPROC _wglCreatePbufferARB;
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PFNWGLGETPBUFFERDCARBPROC _wglGetPbufferDCARB;
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PFNWGLRELEASEPBUFFERDCARBPROC _wglReleasePbufferDCARB;
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PFNWGLDESTROYPBUFFERARBPROC _wglDestroyPbufferARB;
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PFNWGLQUERYPBUFFERARBPROC _wglQueryPbufferARB;
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bool _supports_pixel_format;
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PFNWGLGETPIXELFORMATATTRIBIVARBPROC _wglGetPixelFormatAttribivARB;
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PFNWGLGETPIXELFORMATATTRIBFVARBPROC _wglGetPixelFormatAttribfvARB;
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PFNWGLCHOOSEPIXELFORMATARBPROC _wglChoosePixelFormatARB;
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bool _supports_wgl_multisample;
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bool _supports_wgl_render_texture;
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PFNWGLBINDTEXIMAGEARBPROC _wglBindTexImageARB;
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PFNWGLRELEASETEXIMAGEARBPROC _wglReleaseTexImageARB;
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PFNWGLSETPBUFFERATTRIBARBPROC _wglSetPbufferAttribARB;
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PFNWGLCREATECONTEXTATTRIBSARBPROC _wglCreateContextAttribsARB;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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GLGraphicsStateGuardian::init_type();
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register_type(_type_handle, "wglGraphicsStateGuardian",
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GLGraphicsStateGuardian::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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friend class wglGraphicsBuffer;
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};
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#include "wglGraphicsStateGuardian.I"
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#endif
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