osmesa_context.h 3.89 KB
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//========================================================================
// GLFW 3.3 OSMesa - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2016 Google Inc.
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// Copyright (c) 2016-2017 Camilla Löwy <elmindreda@glfw.org>
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//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would
//    be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
//    be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
//    distribution.
//
//========================================================================
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#define OSMESA_RGBA 0x1908
#define OSMESA_FORMAT 0x22
#define OSMESA_DEPTH_BITS 0x30
#define OSMESA_STENCIL_BITS 0x31
#define OSMESA_ACCUM_BITS 0x32
#define OSMESA_PROFILE 0x33
#define OSMESA_CORE_PROFILE 0x34
#define OSMESA_COMPAT_PROFILE 0x35
#define OSMESA_CONTEXT_MAJOR_VERSION 0x36
#define OSMESA_CONTEXT_MINOR_VERSION 0x37
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typedef void* OSMesaContext;
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typedef void (*OSMESAproc)(void);
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typedef OSMesaContext (GLAPIENTRY * PFN_OSMesaCreateContextExt)(GLenum,GLint,GLint,GLint,OSMesaContext);
typedef OSMesaContext (GLAPIENTRY * PFN_OSMesaCreateContextAttribs)(const int*,OSMesaContext);
typedef void (GLAPIENTRY * PFN_OSMesaDestroyContext)(OSMesaContext);
typedef int (GLAPIENTRY * PFN_OSMesaMakeCurrent)(OSMesaContext,void*,int,int,int);
typedef int (GLAPIENTRY * PFN_OSMesaGetColorBuffer)(OSMesaContext,int*,int*,int*,void**);
typedef int (GLAPIENTRY * PFN_OSMesaGetDepthBuffer)(OSMesaContext,int*,int*,int*,void**);
typedef GLFWglproc (GLAPIENTRY * PFN_OSMesaGetProcAddress)(const char*);
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#define OSMesaCreateContextExt _glfw.osmesa.CreateContextExt
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#define OSMesaCreateContextAttribs _glfw.osmesa.CreateContextAttribs
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#define OSMesaDestroyContext _glfw.osmesa.DestroyContext
#define OSMesaMakeCurrent _glfw.osmesa.MakeCurrent
#define OSMesaGetColorBuffer _glfw.osmesa.GetColorBuffer
#define OSMesaGetDepthBuffer _glfw.osmesa.GetDepthBuffer
#define OSMesaGetProcAddress _glfw.osmesa.GetProcAddress

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#define _GLFW_OSMESA_CONTEXT_STATE              _GLFWcontextOSMesa osmesa
#define _GLFW_OSMESA_LIBRARY_CONTEXT_STATE      _GLFWlibraryOSMesa osmesa
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// OSMesa-specific per-context data
//
typedef struct _GLFWcontextOSMesa
{
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    OSMesaContext       handle;
    int                 width;
    int                 height;
    void*               buffer;
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} _GLFWcontextOSMesa;

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// OSMesa-specific  per user context data
//
typedef struct _GLFWusercontextOSMesa
{
    OSMesaContext       handle;
} _GLFWusercontextOSMesa;

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// OSMesa-specific global data
//
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typedef struct _GLFWlibraryOSMesa
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{
    void*           handle;

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    PFN_OSMesaCreateContextExt      CreateContextExt;
    PFN_OSMesaCreateContextAttribs  CreateContextAttribs;
    PFN_OSMesaDestroyContext        DestroyContext;
    PFN_OSMesaMakeCurrent           MakeCurrent;
    PFN_OSMesaGetColorBuffer        GetColorBuffer;
    PFN_OSMesaGetDepthBuffer        GetDepthBuffer;
    PFN_OSMesaGetProcAddress        GetProcAddress;
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} _GLFWlibraryOSMesa;
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GLFWbool _glfwInitOSMesa(void);
void _glfwTerminateOSMesa(void);
GLFWbool _glfwCreateContextOSMesa(_GLFWwindow* window,
                                  const _GLFWctxconfig* ctxconfig,
                                  const _GLFWfbconfig* fbconfig);
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_GLFWusercontext* _glfwCreateUserContextOSMesa(_GLFWwindow* window);