123 lines
4.4 KiB
C
123 lines
4.4 KiB
C
/*
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* Copyright (c) 2019, NVIDIA CORPORATION.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and/or associated documentation files (the
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* "Materials"), to deal in the Materials without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Materials, and to
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* permit persons to whom the Materials are furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* unaltered in all copies or substantial portions of the Materials.
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* Any additions, deletions, or changes to the original source files
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* must be clearly indicated in accompanying documentation.
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*
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* THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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*/
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#if defined(USE_DISPATCH_ASM)
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#include <GL/glx.h>
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#include <GL/gl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "dummy/GLX_dummy.h"
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int main(int argc, char **argv)
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{
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PFNGLXEXAMPLEEXTENSIONFUNCTION ptr_glXExampleExtensionFunction;
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PFNGLXEXAMPLEEXTENSIONFUNCTION ptr_glXExampleExtensionFunction2;
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__GLXextFuncPtr proc;
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Display *dpy = NULL;
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int result = 0;
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int i;
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// Load the function pointer first, before libGLX can load the dummy vendor
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// library. That'll force libGLX to generate an entrypoint stub.
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ptr_glXExampleExtensionFunction = (PFNGLXEXAMPLEEXTENSIONFUNCTION)
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glXGetProcAddress((const GLubyte *) "glXExampleExtensionFunction");
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if (ptr_glXExampleExtensionFunction == NULL) {
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printf("Can't look up glXExampleExtensionFunction\n");
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return 1;
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}
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printf("Got glXExampleExtensionFunction at address %p\n", ptr_glXExampleExtensionFunction);
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// Call glXGetProcAddress to generate more dummy dispatch stubs, and then a
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// second extension function. This tests that the generated dispatch stubs
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// can correctly handle a large index.
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for (i=0; i<4094; i++) {
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char buf[50];
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snprintf(buf, sizeof(buf), "glXUndefined%dDUMMY", i);
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proc = glXGetProcAddress((const GLubyte *) buf);
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if (proc == NULL) {
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printf("Failed to generate stub for dummy function %d %s\n", i, buf);
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return 1;
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}
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}
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ptr_glXExampleExtensionFunction2 = (PFNGLXEXAMPLEEXTENSIONFUNCTION)
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glXGetProcAddress((const GLubyte *) "glXExampleExtensionFunction2");
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if (ptr_glXExampleExtensionFunction2 == NULL) {
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printf("Can't look up glXExampleExtensionFunction\n");
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return 1;
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}
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printf("Got glXExampleExtensionFunction2 at address %p\n", ptr_glXExampleExtensionFunction2);
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// Make one more call to glXGetProcAddress. This should return NULL.
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proc = glXGetProcAddress((const GLubyte *) "glXLastUndefinedDummy");
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if (proc != NULL) {
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printf("Last glXGetProcAddress returned non-NULL: %p\n", proc);
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return 1;
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}
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dpy = XOpenDisplay(NULL);
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if (dpy == NULL) {
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printf("Can't open display\n");
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return 1;
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}
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// Call glXGetClientString to force libGLX to load the vendor library.
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glXGetClientString(dpy, GLX_EXTENSIONS);
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ptr_glXExampleExtensionFunction(dpy, 0, &result);
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if (result != 1) {
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printf("Unexpected glXExampleExtensionFunction() return value: %d\n", result);
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XCloseDisplay(dpy);
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return 1;
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}
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ptr_glXExampleExtensionFunction2(dpy, 0, &result);
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if (result != 2) {
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printf("Unexpected glXExampleExtensionFunction2() return value: %d\n", result);
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XCloseDisplay(dpy);
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return 1;
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}
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printf("%p - %p = %d\n", ptr_glXExampleExtensionFunction2,
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ptr_glXExampleExtensionFunction,
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(int) (((intptr_t) ptr_glXExampleExtensionFunction2) - ((intptr_t) ptr_glXExampleExtensionFunction)));
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XCloseDisplay(dpy);
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return 0;
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}
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#else // defined(USE_DISPATCH_ASM)
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int main(int argc, char **argv)
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{
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// If libGLX can't generate new dispatch stubs, then just skip this test.
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return 77;
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}
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#endif // defined(USE_DISPATCH_ASM)
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