dc2919d57b
This is accomplished through the addition of a GLAD GLX loader in the `thirdparty` directory. This is another step towards a nice Wayland/X11 interoperation.
395 lines
15 KiB
C
395 lines
15 KiB
C
/**
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* SPDX-License-Identifier: (WTFPL OR CC0-1.0) AND Apache-2.0
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glad/glx.h>
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#ifndef GLAD_IMPL_UTIL_C_
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#define GLAD_IMPL_UTIL_C_
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#ifdef _MSC_VER
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#define GLAD_IMPL_UTIL_SSCANF sscanf_s
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#else
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#define GLAD_IMPL_UTIL_SSCANF sscanf
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#endif
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#endif /* GLAD_IMPL_UTIL_C_ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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int GLAD_GLX_VERSION_1_0 = 0;
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int GLAD_GLX_VERSION_1_1 = 0;
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int GLAD_GLX_VERSION_1_2 = 0;
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int GLAD_GLX_VERSION_1_3 = 0;
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int GLAD_GLX_VERSION_1_4 = 0;
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int GLAD_GLX_ARB_create_context = 0;
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int GLAD_GLX_ARB_create_context_profile = 0;
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int GLAD_GLX_ARB_get_proc_address = 0;
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int GLAD_GLX_EXT_swap_control = 0;
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int GLAD_GLX_MESA_swap_control = 0;
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int GLAD_GLX_SGI_swap_control = 0;
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PFNGLXCHOOSEFBCONFIGPROC glad_glXChooseFBConfig = NULL;
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PFNGLXCHOOSEVISUALPROC glad_glXChooseVisual = NULL;
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PFNGLXCOPYCONTEXTPROC glad_glXCopyContext = NULL;
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PFNGLXCREATECONTEXTPROC glad_glXCreateContext = NULL;
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PFNGLXCREATECONTEXTATTRIBSARBPROC glad_glXCreateContextAttribsARB = NULL;
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PFNGLXCREATEGLXPIXMAPPROC glad_glXCreateGLXPixmap = NULL;
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PFNGLXCREATENEWCONTEXTPROC glad_glXCreateNewContext = NULL;
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PFNGLXCREATEPBUFFERPROC glad_glXCreatePbuffer = NULL;
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PFNGLXCREATEPIXMAPPROC glad_glXCreatePixmap = NULL;
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PFNGLXCREATEWINDOWPROC glad_glXCreateWindow = NULL;
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PFNGLXDESTROYCONTEXTPROC glad_glXDestroyContext = NULL;
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PFNGLXDESTROYGLXPIXMAPPROC glad_glXDestroyGLXPixmap = NULL;
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PFNGLXDESTROYPBUFFERPROC glad_glXDestroyPbuffer = NULL;
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PFNGLXDESTROYPIXMAPPROC glad_glXDestroyPixmap = NULL;
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PFNGLXDESTROYWINDOWPROC glad_glXDestroyWindow = NULL;
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PFNGLXGETCLIENTSTRINGPROC glad_glXGetClientString = NULL;
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PFNGLXGETCONFIGPROC glad_glXGetConfig = NULL;
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PFNGLXGETCURRENTCONTEXTPROC glad_glXGetCurrentContext = NULL;
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PFNGLXGETCURRENTDISPLAYPROC glad_glXGetCurrentDisplay = NULL;
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PFNGLXGETCURRENTDRAWABLEPROC glad_glXGetCurrentDrawable = NULL;
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PFNGLXGETCURRENTREADDRAWABLEPROC glad_glXGetCurrentReadDrawable = NULL;
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PFNGLXGETFBCONFIGATTRIBPROC glad_glXGetFBConfigAttrib = NULL;
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PFNGLXGETFBCONFIGSPROC glad_glXGetFBConfigs = NULL;
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PFNGLXGETPROCADDRESSPROC glad_glXGetProcAddress = NULL;
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PFNGLXGETPROCADDRESSARBPROC glad_glXGetProcAddressARB = NULL;
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PFNGLXGETSELECTEDEVENTPROC glad_glXGetSelectedEvent = NULL;
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PFNGLXGETSWAPINTERVALMESAPROC glad_glXGetSwapIntervalMESA = NULL;
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PFNGLXGETVISUALFROMFBCONFIGPROC glad_glXGetVisualFromFBConfig = NULL;
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PFNGLXISDIRECTPROC glad_glXIsDirect = NULL;
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PFNGLXMAKECONTEXTCURRENTPROC glad_glXMakeContextCurrent = NULL;
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PFNGLXMAKECURRENTPROC glad_glXMakeCurrent = NULL;
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PFNGLXQUERYCONTEXTPROC glad_glXQueryContext = NULL;
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PFNGLXQUERYDRAWABLEPROC glad_glXQueryDrawable = NULL;
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PFNGLXQUERYEXTENSIONPROC glad_glXQueryExtension = NULL;
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PFNGLXQUERYEXTENSIONSSTRINGPROC glad_glXQueryExtensionsString = NULL;
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PFNGLXQUERYSERVERSTRINGPROC glad_glXQueryServerString = NULL;
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PFNGLXQUERYVERSIONPROC glad_glXQueryVersion = NULL;
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PFNGLXSELECTEVENTPROC glad_glXSelectEvent = NULL;
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PFNGLXSWAPBUFFERSPROC glad_glXSwapBuffers = NULL;
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PFNGLXSWAPINTERVALEXTPROC glad_glXSwapIntervalEXT = NULL;
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PFNGLXSWAPINTERVALMESAPROC glad_glXSwapIntervalMESA = NULL;
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PFNGLXSWAPINTERVALSGIPROC glad_glXSwapIntervalSGI = NULL;
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PFNGLXUSEXFONTPROC glad_glXUseXFont = NULL;
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PFNGLXWAITGLPROC glad_glXWaitGL = NULL;
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PFNGLXWAITXPROC glad_glXWaitX = NULL;
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static void glad_glx_load_GLX_VERSION_1_0( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_VERSION_1_0) return;
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glad_glXChooseVisual = (PFNGLXCHOOSEVISUALPROC) load(userptr, "glXChooseVisual");
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glad_glXCopyContext = (PFNGLXCOPYCONTEXTPROC) load(userptr, "glXCopyContext");
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glad_glXCreateContext = (PFNGLXCREATECONTEXTPROC) load(userptr, "glXCreateContext");
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glad_glXCreateGLXPixmap = (PFNGLXCREATEGLXPIXMAPPROC) load(userptr, "glXCreateGLXPixmap");
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glad_glXDestroyContext = (PFNGLXDESTROYCONTEXTPROC) load(userptr, "glXDestroyContext");
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glad_glXDestroyGLXPixmap = (PFNGLXDESTROYGLXPIXMAPPROC) load(userptr, "glXDestroyGLXPixmap");
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glad_glXGetConfig = (PFNGLXGETCONFIGPROC) load(userptr, "glXGetConfig");
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glad_glXGetCurrentContext = (PFNGLXGETCURRENTCONTEXTPROC) load(userptr, "glXGetCurrentContext");
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glad_glXGetCurrentDrawable = (PFNGLXGETCURRENTDRAWABLEPROC) load(userptr, "glXGetCurrentDrawable");
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glad_glXIsDirect = (PFNGLXISDIRECTPROC) load(userptr, "glXIsDirect");
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glad_glXMakeCurrent = (PFNGLXMAKECURRENTPROC) load(userptr, "glXMakeCurrent");
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glad_glXQueryExtension = (PFNGLXQUERYEXTENSIONPROC) load(userptr, "glXQueryExtension");
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glad_glXQueryVersion = (PFNGLXQUERYVERSIONPROC) load(userptr, "glXQueryVersion");
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glad_glXSwapBuffers = (PFNGLXSWAPBUFFERSPROC) load(userptr, "glXSwapBuffers");
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glad_glXUseXFont = (PFNGLXUSEXFONTPROC) load(userptr, "glXUseXFont");
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glad_glXWaitGL = (PFNGLXWAITGLPROC) load(userptr, "glXWaitGL");
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glad_glXWaitX = (PFNGLXWAITXPROC) load(userptr, "glXWaitX");
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}
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static void glad_glx_load_GLX_VERSION_1_1( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_VERSION_1_1) return;
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glad_glXGetClientString = (PFNGLXGETCLIENTSTRINGPROC) load(userptr, "glXGetClientString");
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glad_glXQueryExtensionsString = (PFNGLXQUERYEXTENSIONSSTRINGPROC) load(userptr, "glXQueryExtensionsString");
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glad_glXQueryServerString = (PFNGLXQUERYSERVERSTRINGPROC) load(userptr, "glXQueryServerString");
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}
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static void glad_glx_load_GLX_VERSION_1_2( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_VERSION_1_2) return;
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glad_glXGetCurrentDisplay = (PFNGLXGETCURRENTDISPLAYPROC) load(userptr, "glXGetCurrentDisplay");
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}
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static void glad_glx_load_GLX_VERSION_1_3( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_VERSION_1_3) return;
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glad_glXChooseFBConfig = (PFNGLXCHOOSEFBCONFIGPROC) load(userptr, "glXChooseFBConfig");
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glad_glXCreateNewContext = (PFNGLXCREATENEWCONTEXTPROC) load(userptr, "glXCreateNewContext");
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glad_glXCreatePbuffer = (PFNGLXCREATEPBUFFERPROC) load(userptr, "glXCreatePbuffer");
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glad_glXCreatePixmap = (PFNGLXCREATEPIXMAPPROC) load(userptr, "glXCreatePixmap");
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glad_glXCreateWindow = (PFNGLXCREATEWINDOWPROC) load(userptr, "glXCreateWindow");
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glad_glXDestroyPbuffer = (PFNGLXDESTROYPBUFFERPROC) load(userptr, "glXDestroyPbuffer");
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glad_glXDestroyPixmap = (PFNGLXDESTROYPIXMAPPROC) load(userptr, "glXDestroyPixmap");
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glad_glXDestroyWindow = (PFNGLXDESTROYWINDOWPROC) load(userptr, "glXDestroyWindow");
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glad_glXGetCurrentReadDrawable = (PFNGLXGETCURRENTREADDRAWABLEPROC) load(userptr, "glXGetCurrentReadDrawable");
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glad_glXGetFBConfigAttrib = (PFNGLXGETFBCONFIGATTRIBPROC) load(userptr, "glXGetFBConfigAttrib");
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glad_glXGetFBConfigs = (PFNGLXGETFBCONFIGSPROC) load(userptr, "glXGetFBConfigs");
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glad_glXGetSelectedEvent = (PFNGLXGETSELECTEDEVENTPROC) load(userptr, "glXGetSelectedEvent");
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glad_glXGetVisualFromFBConfig = (PFNGLXGETVISUALFROMFBCONFIGPROC) load(userptr, "glXGetVisualFromFBConfig");
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glad_glXMakeContextCurrent = (PFNGLXMAKECONTEXTCURRENTPROC) load(userptr, "glXMakeContextCurrent");
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glad_glXQueryContext = (PFNGLXQUERYCONTEXTPROC) load(userptr, "glXQueryContext");
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glad_glXQueryDrawable = (PFNGLXQUERYDRAWABLEPROC) load(userptr, "glXQueryDrawable");
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glad_glXSelectEvent = (PFNGLXSELECTEVENTPROC) load(userptr, "glXSelectEvent");
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}
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static void glad_glx_load_GLX_VERSION_1_4( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_VERSION_1_4) return;
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glad_glXGetProcAddress = (PFNGLXGETPROCADDRESSPROC) load(userptr, "glXGetProcAddress");
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}
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static void glad_glx_load_GLX_ARB_create_context( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_ARB_create_context) return;
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glad_glXCreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC) load(userptr, "glXCreateContextAttribsARB");
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}
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static void glad_glx_load_GLX_ARB_get_proc_address( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_ARB_get_proc_address) return;
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glad_glXGetProcAddressARB = (PFNGLXGETPROCADDRESSARBPROC) load(userptr, "glXGetProcAddressARB");
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}
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static void glad_glx_load_GLX_EXT_swap_control( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_EXT_swap_control) return;
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glad_glXSwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC) load(userptr, "glXSwapIntervalEXT");
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}
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static void glad_glx_load_GLX_MESA_swap_control( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_MESA_swap_control) return;
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glad_glXGetSwapIntervalMESA = (PFNGLXGETSWAPINTERVALMESAPROC) load(userptr, "glXGetSwapIntervalMESA");
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glad_glXSwapIntervalMESA = (PFNGLXSWAPINTERVALMESAPROC) load(userptr, "glXSwapIntervalMESA");
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}
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static void glad_glx_load_GLX_SGI_swap_control( GLADuserptrloadfunc load, void* userptr) {
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if(!GLAD_GLX_SGI_swap_control) return;
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glad_glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC) load(userptr, "glXSwapIntervalSGI");
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}
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static int glad_glx_has_extension(Display *display, int screen, const char *ext) {
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#ifndef GLX_VERSION_1_1
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GLAD_UNUSED(display);
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GLAD_UNUSED(screen);
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GLAD_UNUSED(ext);
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#else
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const char *terminator;
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const char *loc;
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const char *extensions;
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if (glXQueryExtensionsString == NULL) {
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return 0;
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}
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extensions = glXQueryExtensionsString(display, screen);
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if(extensions == NULL || ext == NULL) {
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return 0;
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}
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while(1) {
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loc = strstr(extensions, ext);
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if(loc == NULL)
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break;
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terminator = loc + strlen(ext);
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if((loc == extensions || *(loc - 1) == ' ') &&
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(*terminator == ' ' || *terminator == '\0')) {
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return 1;
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}
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extensions = terminator;
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}
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#endif
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return 0;
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}
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static GLADapiproc glad_glx_get_proc_from_userptr(void *userptr, const char* name) {
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return (GLAD_GNUC_EXTENSION (GLADapiproc (*)(const char *name)) userptr)(name);
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}
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static int glad_glx_find_extensions(Display *display, int screen) {
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GLAD_GLX_ARB_create_context = glad_glx_has_extension(display, screen, "GLX_ARB_create_context");
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GLAD_GLX_ARB_create_context_profile = glad_glx_has_extension(display, screen, "GLX_ARB_create_context_profile");
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GLAD_GLX_ARB_get_proc_address = glad_glx_has_extension(display, screen, "GLX_ARB_get_proc_address");
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GLAD_GLX_EXT_swap_control = glad_glx_has_extension(display, screen, "GLX_EXT_swap_control");
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GLAD_GLX_MESA_swap_control = glad_glx_has_extension(display, screen, "GLX_MESA_swap_control");
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GLAD_GLX_SGI_swap_control = glad_glx_has_extension(display, screen, "GLX_SGI_swap_control");
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return 1;
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}
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static int glad_glx_find_core_glx(Display **display, int *screen) {
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int major = 0, minor = 0;
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if(*display == NULL) {
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#ifdef GLAD_GLX_NO_X11
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GLAD_UNUSED(screen);
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return 0;
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#else
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*display = XOpenDisplay(0);
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if (*display == NULL) {
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return 0;
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}
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*screen = XScreenNumberOfScreen(XDefaultScreenOfDisplay(*display));
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#endif
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}
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glXQueryVersion(*display, &major, &minor);
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GLAD_GLX_VERSION_1_0 = (major == 1 && minor >= 0) || major > 1;
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GLAD_GLX_VERSION_1_1 = (major == 1 && minor >= 1) || major > 1;
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GLAD_GLX_VERSION_1_2 = (major == 1 && minor >= 2) || major > 1;
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GLAD_GLX_VERSION_1_3 = (major == 1 && minor >= 3) || major > 1;
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GLAD_GLX_VERSION_1_4 = (major == 1 && minor >= 4) || major > 1;
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return GLAD_MAKE_VERSION(major, minor);
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}
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int gladLoadGLXUserPtr(Display *display, int screen, GLADuserptrloadfunc load, void *userptr) {
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int version;
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glXQueryVersion = (PFNGLXQUERYVERSIONPROC) load(userptr, "glXQueryVersion");
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if(glXQueryVersion == NULL) return 0;
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version = glad_glx_find_core_glx(&display, &screen);
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glad_glx_load_GLX_VERSION_1_0(load, userptr);
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glad_glx_load_GLX_VERSION_1_1(load, userptr);
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glad_glx_load_GLX_VERSION_1_2(load, userptr);
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glad_glx_load_GLX_VERSION_1_3(load, userptr);
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glad_glx_load_GLX_VERSION_1_4(load, userptr);
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if (!glad_glx_find_extensions(display, screen)) return 0;
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glad_glx_load_GLX_ARB_create_context(load, userptr);
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glad_glx_load_GLX_ARB_get_proc_address(load, userptr);
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glad_glx_load_GLX_EXT_swap_control(load, userptr);
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glad_glx_load_GLX_MESA_swap_control(load, userptr);
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glad_glx_load_GLX_SGI_swap_control(load, userptr);
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return version;
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}
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int gladLoadGLX(Display *display, int screen, GLADloadfunc load) {
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return gladLoadGLXUserPtr(display, screen, glad_glx_get_proc_from_userptr, GLAD_GNUC_EXTENSION (void*) load);
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}
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#ifdef GLAD_GLX
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#ifndef GLAD_LOADER_LIBRARY_C_
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#define GLAD_LOADER_LIBRARY_C_
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#include <stddef.h>
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#include <stdlib.h>
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#if GLAD_PLATFORM_WIN32
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#include <windows.h>
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#else
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#include <dlfcn.h>
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#endif
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static void* glad_get_dlopen_handle(const char *lib_names[], int length) {
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void *handle = NULL;
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int i;
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for (i = 0; i < length; ++i) {
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#if GLAD_PLATFORM_WIN32
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#if GLAD_PLATFORM_UWP
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size_t buffer_size = (strlen(lib_names[i]) + 1) * sizeof(WCHAR);
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LPWSTR buffer = (LPWSTR) malloc(buffer_size);
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if (buffer != NULL) {
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int ret = MultiByteToWideChar(CP_ACP, 0, lib_names[i], -1, buffer, buffer_size);
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if (ret != 0) {
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handle = (void*) LoadPackagedLibrary(buffer, 0);
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}
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free((void*) buffer);
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}
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#else
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handle = (void*) LoadLibraryA(lib_names[i]);
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#endif
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#else
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handle = dlopen(lib_names[i], RTLD_LAZY | RTLD_LOCAL);
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#endif
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if (handle != NULL) {
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return handle;
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}
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}
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return NULL;
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}
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static void glad_close_dlopen_handle(void* handle) {
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if (handle != NULL) {
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#if GLAD_PLATFORM_WIN32
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FreeLibrary((HMODULE) handle);
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#else
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dlclose(handle);
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#endif
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}
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}
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static GLADapiproc glad_dlsym_handle(void* handle, const char *name) {
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if (handle == NULL) {
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return NULL;
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}
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#if GLAD_PLATFORM_WIN32
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return (GLADapiproc) GetProcAddress((HMODULE) handle, name);
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#else
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return GLAD_GNUC_EXTENSION (GLADapiproc) dlsym(handle, name);
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#endif
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}
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#endif /* GLAD_LOADER_LIBRARY_C_ */
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typedef void* (GLAD_API_PTR *GLADglxprocaddrfunc)(const char*);
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static GLADapiproc glad_glx_get_proc(void *userptr, const char *name) {
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return GLAD_GNUC_EXTENSION ((GLADapiproc (*)(const char *name)) userptr)(name);
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}
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static void* _glx_handle;
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static void* glad_glx_dlopen_handle(void) {
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static const char *NAMES[] = {
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#if defined __CYGWIN__
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"libGL-1.so",
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#endif
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"libGL.so.1",
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"libGL.so"
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};
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if (_glx_handle == NULL) {
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_glx_handle = glad_get_dlopen_handle(NAMES, sizeof(NAMES) / sizeof(NAMES[0]));
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}
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return _glx_handle;
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}
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int gladLoaderLoadGLX(Display *display, int screen) {
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int version = 0;
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void *handle = NULL;
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int did_load = 0;
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GLADglxprocaddrfunc loader;
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did_load = _glx_handle == NULL;
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handle = glad_glx_dlopen_handle();
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if (handle != NULL) {
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loader = (GLADglxprocaddrfunc) glad_dlsym_handle(handle, "glXGetProcAddressARB");
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if (loader != NULL) {
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version = gladLoadGLXUserPtr(display, screen, glad_glx_get_proc, GLAD_GNUC_EXTENSION (void*) loader);
|
|
}
|
|
|
|
if (!version && did_load) {
|
|
gladLoaderUnloadGLX();
|
|
}
|
|
}
|
|
|
|
return version;
|
|
}
|
|
|
|
|
|
void gladLoaderUnloadGLX() {
|
|
if (_glx_handle != NULL) {
|
|
glad_close_dlopen_handle(_glx_handle);
|
|
_glx_handle = NULL;
|
|
}
|
|
}
|
|
|
|
#endif /* GLAD_GLX */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|