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Added reporting of extension string retrieval failure.
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e4a87b8a1c
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@ -566,7 +566,7 @@ GLFWAPI int glfwExtensionSupported(const char* extension)
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return GL_FALSE;
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}
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if (extension == NULL || *extension == '\0')
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if (!extension || *extension == '\0')
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{
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_glfwInputError(GLFW_INVALID_VALUE, NULL);
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return GL_FALSE;
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@ -577,11 +577,15 @@ GLFWAPI int glfwExtensionSupported(const char* extension)
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// Check if extension is in the old style OpenGL extensions string
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extensions = glGetString(GL_EXTENSIONS);
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if (extensions != NULL)
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if (!extensions)
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{
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if (_glfwStringInExtensionString(extension, extensions))
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return GL_TRUE;
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"Failed to retrieve extension string");
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return GL_FALSE;
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}
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if (_glfwStringInExtensionString(extension, extensions))
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return GL_TRUE;
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}
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#if defined(_GLFW_USE_OPENGL)
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else
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@ -596,11 +600,15 @@ GLFWAPI int glfwExtensionSupported(const char* extension)
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for (i = 0; i < count; i++)
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{
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const char* en = (const char*) window->GetStringi(GL_EXTENSIONS, i);
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if (en != NULL)
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if (!en)
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{
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if (strcmp(en, extension) == 0)
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return GL_TRUE;
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"Failed to retrieve extension string %i", i);
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return GL_FALSE;
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}
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if (strcmp(en, extension) == 0)
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return GL_TRUE;
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}
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}
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#endif // _GLFW_USE_OPENGL
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