46 строки
1.1 KiB
C++
46 строки
1.1 KiB
C++
#include <GLES3/gl3.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <emscripten.h>
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#include <html5.h>
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EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context;
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int main()
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{
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EmscriptenWebGLContextAttributes attrs;
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emscripten_webgl_init_context_attributes(&attrs);
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attrs.majorVersion = 2;
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attrs.minorVersion = 0;
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int result = 0;
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EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context = emscripten_webgl_create_context(0, &attrs);
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if (context)
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{
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EMSCRIPTEN_RESULT res = emscripten_webgl_make_context_current(context);
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assert(res == EMSCRIPTEN_RESULT_SUCCESS);
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assert(emscripten_webgl_get_current_context() == context);
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int numExtensions = 0;
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glGetIntegerv(GL_NUM_EXTENSIONS, &numExtensions);
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bool hasGLExtension = false;
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for(int i = 0; i < numExtensions; ++i)
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{
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const char *ext = (const char *)glGetStringi(GL_EXTENSIONS, i);
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printf("extension %d: %s\n", i, ext);
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if (strstr(ext, "GL_") == 0)
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hasGLExtension = true;
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}
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if (!hasGLExtension)
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result = 1;
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}
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#ifdef REPORT_RESULT
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REPORT_RESULT();
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#endif
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return 0;
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}
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