Avoid glGetStringi() on OpenGL 2.1
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@ -1564,7 +1564,7 @@ void rlglInit(int width, int height)
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// Get supported extensions list
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GLint numExt = 0;
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#if defined(GRAPHICS_API_OPENGL_33)
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#if defined(GRAPHICS_API_OPENGL_33) && !defined(GRAPHICS_API_OPENGL_21)
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// NOTE: On OpenGL 3.3 VAO and NPOT are supported by default
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RLGL.ExtSupported.vao = true;
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@ -1583,7 +1583,8 @@ void rlglInit(int width, int height)
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// Get extensions strings
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for (int i = 0; i < numExt; i++) extList[i] = (char *)glGetStringi(GL_EXTENSIONS, i);
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#elif defined(GRAPHICS_API_OPENGL_ES2)
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#endif
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#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21)
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// Allocate 512 strings pointers (2 KB)
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const char **extList = RL_MALLOC(sizeof(const char *)*512);
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@ -1682,9 +1683,11 @@ void rlglInit(int width, int height)
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// Free extensions pointers
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RL_FREE(extList);
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#if defined(GRAPHICS_API_OPENGL_ES2)
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#if defined(GRAPHICS_API_OPENGL_ES2) || defined(GRAPHICS_API_OPENGL_21)
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RL_FREE(extensionsDup); // Duplicated string must be deallocated
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#endif
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#if defined(GRAPHICS_API_OPENGL_ES2)
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if (RLGL.ExtSupported.vao) TRACELOG(LOG_INFO, "GL: VAO extension detected, VAO functions initialized successfully");
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else TRACELOG(LOG_WARNING, "GL: VAO extension not found, VAO usage not supported");
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